Ducted Air Conditioning Cost NSW 2026 - Get Free Quotes

Ducted Air Conditioning Costs in NSW for 2026

Ducted air conditioning is the premium whole home climate option for NSW properties, distributing conditioned air throughout the house from a central unit concealed in the roof space or beneath the floor. Unlike visible wall-mounted split systems, ducted keeps the interior clean of wall units while giving you consistent temperatures across multiple rooms simultaneously. This guide explores current pricing, system options and factors affecting your investment in ducted comfort.

Ducted installation cost varies widely with home size, system capacity, zone control sophistication and installation complexity. A small home on three or four zones costs $8,500 to $12,000 fully installed during 2026. Medium homes with five to six zones runs $12,000 to $18,000, while larger properties needing seven or more zones push costs to $18,000 to $25,000. Luxury homes with unusual requirements or premium equipment can run above these ranges.

The total investment comprises equipment costs, ductwork materials, electrical requirements and labour for installation. Equipment alone is roughly 40 to 50 per cent of a typical project, with ductwork materials contributing 15 to 25 percent and labour accounting for the balance. Understanding these proportions helps evaluate quotes and identify where different installers make trade-offs between equipment quality, ductwork specification and labour efficiency.

Regional pricing follows patterns similar to other air conditioning installation work across NSW. Sydney carries premium rates because overheads are higher and strong demand, while Newcastle, Wollongong and regional centres come in 5 to 15 per cent below on equivalent projects. Travel charges apply for properties distant from installer bases, which can cancel out the lower regional base rate for remote locations.

System Sizing and Capacity Requirements

Getting the sizing right decides comfort, efficiency and how long the system lasts. Undersized systems struggle to achieve comfortable temperatures during extreme weather, running continuously and still not cooling the house properly. Oversized systems cycle inefficiently, reducing dehumidification effectiveness during cooling while accelerating wear from frequent starting and stopping. A proper sizing calculation is what matches capacity to your particular house.

Residential ducted systems run from 10kW to 24kW cooling capacity, with heating outputs varying based on reverse cycle efficiency at different outdoor temperatures. Small homes suit 10kW to 14kW systems, medium homes need 14kW to 18kW, and larger properties need 18kW to 24kW or multiple smaller systems. Two-storey homes often benefit from separate systems for each level rather than single oversized units attempting to condition vertically separated spaces.

Heat load calculations consider floor area, ceiling heights, insulation levels, window sizes and orientations, and typical occupancy patterns. North and west facing windows bring in far more heat than south-facing equivalents, so a room getting long sun exposure needs more capacity. Well-insulated homes require less capacity than poorly insulated equivalents of similar size, which means better comfort at a lower running cost.

Equipment pricing scales with capacity, though not linearly. A 14kW system costs 20 to 30 per cent more than a 10kW equivalent rather than 40 percent, as many components remain similar regardless of output. Installers can recommend a capacity based on a detailed assessment of your property, though a second opinion is what keeps the recommendation matched to the house rather than generously specified.

What Actually Drives the Price

Two quotes on the same house can differ by five thousand dollars, and the difference is almost never margin. It is scope, and the components that vary are predictable enough that you can find them by asking every installer the same handful of questions. Knowing what moves the number lets you read a quote instead of guessing at one. Ask every installer the same list and the differences become obvious.

Capacity is the base figure and it should come from a calculation rather than a rule of thumb. A proper heat load calculation accounts for floor area, ceiling height, orientation, glazing area and type, insulation levels and how the house is occupied, and it produces a kilowatt figure the equipment is then selected to meet. An installer who quotes off floor area alone is guessing, and the guess is usually upward because oversizing is the safer error for them and the more expensive one for you. A room by room breakdown is what you should be handed.

Zone count drives both the equipment and the labour. Every zone adds a motorised damper, control wiring, a temperature sensor and setup time at commissioning, so the difference between a four zone and a seven zone system is several thousand dollars before any extra ductwork. More zones are generally better for running cost, but the payback depends on whether you actually use them independently. Think about how the household actually lives before settling on a zone count. Bedrooms overnight and living areas by day is the pattern most homes fall into.

Roof space access is the factor nobody mentions at quote stage and the one that separates a smooth install from a difficult one. A generous roof cavity with a walkable structure and a manhole near the middle of the house is straightforward. A low pitch roof, a truss roof with limited clearance, or a two storey house needing a bulkhead to run duct between levels all add labour that shows up as a higher figure without any change in equipment. Have a look in the roof space yourself before you start collecting quotes.

Electrical work is a separate trade and a common gap between quotes. A ducted system needs a dedicated circuit, and on an older home the switchboard may need upgrading before that circuit can be added compliantly, which runs $800 to $2,500 on its own. Ask whether the quote includes electrical work or assumes the existing board is suitable, since that assumption is worth thousands. Switchboard pricing sits at switchboard upgrades.

Outdoor unit position affects both cost and how you live with the system. A condenser at ground level near the switchboard is the cheapest arrangement, while one on a roof, a difficult side passage or a position needing long pipe runs adds material and labour. It also determines what you hear from the bedroom on a February night, which is worth as much thought as the price. Published sound power figures let you compare before anything is mounted.

Why Oversizing Costs You Twice

The single most common fault in domestic ducted systems is not undersizing, it is oversizing, and it is expensive in a way that does not show up until the system is running. Understanding why lets you push back on a quote that specifies more capacity than the house needs. Get that confirmed in writing before the deposit.

An oversized system cools the air quickly and then shuts down, which sounds efficient and is not. Removing humidity takes running time, so a system that satisfies the thermostat in ten minutes leaves the air cold and clammy rather than comfortable, and in a Sydney summer that humidity is a large part of what makes a house unpleasant. The fix is correct sizing rather than a lower set temperature. Turning the thermostat down to compensate makes the problem worse, not better.

Short cycling also shortens equipment life. Every start draws far more current than steady running, and a compressor starting and stopping repeatedly through a hot afternoon wears faster than one running longer cycles at part load. On an inverter system the effect is smaller because the compressor modulates, but the principle holds. Longer, gentler cycles are easier on every component in the system.

You also pay for the capacity twice, once at purchase and again on every power bill. A larger outdoor unit costs more to buy, and it draws more when it runs, so a system specified two kilowatts above what the house needs is a permanent overhead. Across fifteen years that is a meaningful number. It also means a larger outdoor unit sitting somewhere you have to look at.

The defence is asking for the load calculation. A competent installer will produce a room by room breakdown showing the calculated load and the selected capacity, and they will be happy to explain the assumptions. An installer who cannot produce one, or who quotes a capacity within minutes of walking through the door, has not done the work you are paying for. Ask for it in writing before signing anything.

Ductwork Design and Installation

Ductwork quality has a large effect on system performance, efficiency and longevity. Properly designed and installed duct networks deliver conditioned air effectively to each zone while minimising losses through leakage and poor insulation. Shortcuts in ductwork specification or installation create ongoing efficiency penalties that accumulate over the system's operational lifetime, and they can exceed the initial saving within a few years.

Supply ducts distribute conditioned air from the central unit to outlets throughout your home. Rigid metal ductwork provides the most durable and efficient option, though flexible insulated ducting offers faster installation at lower cost for runs where rigid duct is impractical. Quality installations use rigid sections for main trunks with flexible connections to individual outlets, balancing cost against performance.

Return air provisions allow air circulation back to the central unit for reconditioning. Adequate return air capacity is what lets the system work properly, yet frequently receives less attention than supply ductwork in budget installations. Undersized or poorly positioned return air grilles restrict airflow, reducing efficiency while increasing noise levels. Proper return air design distributes extraction points across conditioned spaces rather than relying on single central returns.

New construction installation costs far less than retrofit projects in existing homes. Building during construction allows efficient duct routing before ceilings close, which cuts labour and lets the runs go where they should. Retrofitting existing homes requires working within available ceiling cavities, which can mean bulkheads or compromised routing that increases costs and may limit system effectiveness. Ask how the runs are planned before the ceiling closes.

Zone Control Options and Costs

Zone control systems give you independent temperature management across different areas of your home, improving both comfort and efficiency. Rather than conditioning your entire home uniformly, zones allow targeting occupied areas while reducing output to unoccupied spaces. That capability recovers its extra cost through lower energy use over subsequent years of operation.

Basic zone control divides a home into two or three broad areas, usually separating living spaces from bedrooms with a third zone covering remaining areas. This straightforward approach adds $1,500 to $2,500 to system costs and it improves efficiency noticeably for households with predictable occupancy patterns. Motorised dampers within the ductwork respond to zone thermostat settings, directing airflow as required. Every damper is a moving part with a service life.

Advanced zone control provides room-by-room temperature management through individual thermostats and sophisticated damper systems. Full zone control with eight or more independent zones adds $3,000 to $5,000 beyond basic systems, though the efficiency gains prove most valuable for larger homes with varied occupancy across many rooms. Smart home integration adds app based control and automated scheduling aligned with household routines.

Inverter-driven variable refrigerant volume systems are the premium end of ducted technology, adjusting output continuously to match actual demand rather than cycling between full power and off states. These systems achieve superior efficiency and comfort compared to conventional on-off operation, though the equipment costs more. Households that run the system heavily get the most from inverter technology. Light users see less of that benefit.

Ductwork Is Where Corners Get Cut

The equipment on a ducted quote is easy to compare because brands and models are named. The ductwork usually is not, and it is where the largest quality difference between two otherwise similar quotes hides. Duct is invisible once the ceiling is closed up, which is exactly why it is worth asking about before it goes in.

Insulation rating is the specification to ask for. Flexible duct is rated by its insulation value, and a higher rating means less of the cooling you paid for is lost into a roof space that reaches well above fifty degrees on a Sydney summer afternoon. Cheaper duct at a lower rating saves the installer money and costs you every hour the system runs. Ask for the rating on the quote rather than a description.

Duct sizing matters as much as insulation and is easier to get wrong. Undersized duct restricts airflow, which makes the system work harder for less output and produces noise at the outlets, and it is a common shortcut on a tight quote. The duct size should follow from the calculated airflow for each room, not from what was on the van.

Run length and layout affect performance more than most owners realise. Long runs with multiple bends lose air pressure, so a room at the end of a poorly planned run never quite matches the rest of the house no matter what the thermostat says. Ask how the layout has been planned and whether any room is at the end of a long branch. The room furthest from the unit is the one to ask about.

Joints and support are the workmanship element. Duct that is properly joined, sealed and supported at regular intervals stays where it was installed and does not sag into a position that restricts airflow, while duct laid loosely across ceiling joists gradually deforms. This is the part you can actually inspect if you are willing to put your head through the manhole before the job is signed off.

Return air sizing is the element most often undersized. The system needs to draw as much air back as it pushes out, and an undersized return grille produces noise, restricts airflow and reduces capacity across the whole system. If the quote does not specify the return air arrangement, ask. It should be on the drawing alongside the supply outlets.

Brand Selection for Ducted Systems

Australian manufacturer Actron Air dominates the domestic ducted market, offering systems specifically designed for local conditions, and most installers know them well. Their range spans entry-level through premium specifications, with most residential installations using mid-range series providing good balance between features and cost. Service and parts availability throughout NSW benefits from their market position. Availability matters most when something fails in January.

Daikin ducted systems cost more and give you excellent efficiency and sophisticated control options. Their inverter-driven systems achieve superior performance though at 20 to 35 per cent above Actron equivalents. Households that value efficiency and run the system heavily often justify the Daikin premium through reduced running costs over system lifetimes.

Mitsubishi Electric and Fujitsu offer quality ducted options popular in the mid to upper market segments. Both brands deliver reliable performance with good efficiency ratings, though installer familiarity varies compared to Actron's dominant position. Premium features including advanced zone control and smart home integration feature across their ducted ranges. Confirm which controller is included rather than assuming.

Carrier, Temperzone and Brivis provide additional quality options across various price points. Temperzone particularly suits larger residential and light commercial applications, while Brivis evaporative systems offer alternatives for properties where evaporative cooling suits the climate. Brand selection depends on specific requirements, budget constraints and installer recommendations based on your property characteristics. Ask what the installer fits most often, since familiarity affects the result.

Installation Complexity Factors

Roof space access has a large effect on ducted installation cost. Generous ceiling cavities with clear access allow efficient work at standard pricing. Restricted spaces, multiple rooflines, low clearances or cathedral ceilings complicate installation, extending time requirements and pushing costs toward upper ranges. Some older homes prove essentially unsuitable for ducted installation due to insufficient roof space for equipment and ductwork.

Single-storey homes achieve lower installation costs than two-storey equivalents for similar conditioned floor areas. Upper-level installations face additional challenges positioning equipment and routing ductwork, while conditioning both levels from single systems requires careful design to manage stratification effects where warm air naturally rises. Separate systems for each level often are more practical and effective than single oversized units. Two smaller systems also give you redundancy in a heatwave.

Building construction affects installation difficulty, particularly for penetrations and equipment mounting. Concrete slab construction limits floor outlet options while brick veneer and double brick walls require more effort for wall penetrations than lightweight alternatives. Heritage properties may face restrictions affecting visible external components or requiring special consideration during installation. Flag anything unusual about the roof space at quote stage.

Electrical infrastructure requirements follow similar patterns to split system installations but at larger scale. Ducted systems need dedicated circuits with higher current ratings, which can mean a switchboard upgrade in properties with limited electrical capacity. Three-phase power requirements apply to larger systems, adding real cost where three phase supply is not already there. Check what supply the property has before shortlisting equipment.

Ducted Costs Across Sydney

Equipment costs the same across the metropolitan area, so the variation in ducted pricing comes from the housing stock rather than the suburb. Roof space, house age, storey count and how far the outdoor unit sits from the switchboard do most of the work. The pattern below reflects what is typical in each area rather than a rate card.

Older inner suburbs carry the switchboard question more often than newer areas. A home with an original fuse board, no spare ways or no safety switch protection needs an upgrade before a dedicated ducted circuit can be added compliantly, and that is a cost of getting the system rather than an air conditioning cost. Establish it before accepting a quote rather than discovering it on installation day. An electrician can confirm the board in a single visit.

Terraces and semis are the hardest metropolitan installs and price accordingly. Limited roof space, shared walls, no side access for the outdoor unit and often a heritage overlay all constrain what is possible, and in some cases a ducted system is not the right answer at all. A multi-head system may suit better, and pricing sits at multi split systems.

Western Sydney systems face the heaviest summer load in the metropolitan area. Temperatures out through Penrith, Blacktown and the south west run several degrees above the coastal suburbs, so a capacity that would be comfortable in Bondi will struggle in a February heatwave further inland. That is an argument for sizing on a calculation rather than on what the neighbours installed. Orientation and glazing differ more between houses than people assume.

Coastal properties should specify for corrosion at the outdoor unit. Salt laden air attacks the aluminium fins and copper joints on a condenser continuously, and a unit within a few kilometres of the water degrades years faster than an identical one inland. Ask what the coastal specification is and factor a fresh water rinse into the maintenance routine. A hose and five minutes each season is all it takes.

Timing the Installation

When you book a ducted installation affects both what you pay and how long you wait, and the swing across the year is larger than in most trades. The whole state discovers its cooling problem in the same fortnight, which is exactly when capacity is shortest. The answer tells you how much thought has gone into the design.

Autumn and early spring are the value windows. Installers have availability, there is no urgency premium, and you can compare three quotes properly rather than accepting whoever can attend. A house that was uncomfortable last February should be quoted in March, not in the middle of the next heatwave. March quotes are both cheaper and more considered.

Peak season means waiting as well as paying. From late November through January, lead times on ducted installation stretch to weeks in most of Sydney, and equipment availability narrows to whatever is in the warehouse rather than what suits the house. Choosing from stock rather than from a specification is how people end up with the wrong capacity. Choose from a specification, not from a warehouse.

Renovation timing changes the arithmetic entirely. Installing ducted during a renovation, while ceilings are open and before plastering, is substantially cheaper and produces a better result than retrofitting into a finished house, because the duct runs are unobstructed and no ceiling has to be cut. If a renovation is on the horizon at all, that is when the ducted conversation should happen. Retrofitting later costs considerably more for a worse result.

New construction is cheaper again for the same reason. Ductwork installed at frame stage costs a fraction of the same work in a completed house, and the design can accommodate the system rather than the system working around the design. Full installation scope is set out at ducted air conditioning installation.

New Construction versus Retrofit Costs

Installing ducted air conditioning during new home construction costs far less than retrofitting an existing house. Builder arranged installation during construction costs 20 to 35 per cent less than equivalent retrofit work, because scheduling is efficient, access is clear and the runs can be planned duct routing before walls and ceilings close. Discussing air conditioning requirements early in the build process maximises installation efficiency. Bring the installer in at frame stage rather than at lock up.

Retrofit installations in existing homes face constraints including working within available ceiling cavities, routing around existing building elements and minimising disruption to finished surfaces. These challenges extend installation time while sometimes requiring compromises in system design that affect performance. Budget 20 to 40 percent above equivalent new construction costs for retrofit projects. That gap is the strongest argument for planning ahead. Even a rough renovation timeline is worth mentioning at quote stage.

Major renovations provide opportunities for efficient ducted installation similar to new construction. Opening ceilings during a renovation lets duct run where it should with no extra disruption, while electrical upgrades accompanying renovation scope may address ducted system requirements without standalone cost impact. Coordinating air conditioning installation with renovation timing maximises value from both investments. One trade access instead of two saves more than the labour.

Replacing existing ducted systems offers potential cost savings through reusing functional ductwork where condition permits. If existing ductwork meets current requirements and remains in good condition, replacement projects may cost 30 to 50 percent less than complete new installations. Assessment of existing ductwork condition forms essential part of replacement project planning. Have the existing duct assessed rather than assumed. A camera in the roof space settles it in minutes.

Regional Pricing Variations

Sydney ducted installation costs more because labour is dearer, traffic-affected scheduling and intense market demand. Metropolitan installation costs 10 to 25 per cent more than regional equivalents for comparable projects. Inner-city work faces additional challenges including access restrictions and coordination requirements that push prices higher still in dense urban areas. Parking and access alone add hours on an inner city job.

Newcastle offers competitive ducted installation pricing generally 5 to 15 percent below Sydney benchmarks. Established local operators hold their standards and carry lower operating costs than Sydney-based competitors. Regional travel charges remain moderate within the greater Newcastle area because there are enough qualified installers. Competition holds prices closer to Sydney than distance would suggest. Newcastle and Wollongong both have depth in the trade.

Wollongong and Central Coast markets follow similar patterns to Newcastle, with pricing 5 to 12 per cent below Sydney. Enough installers compete to hold quality up, and lower regional overheads mean savings against metropolitan rates. Properties in these regions enjoy access to qualified installers without the travel premiums affecting more remote locations. Ask what the travel component is if you are outside a main centre. On a remote job it can be a material part of the total.

Smaller regional centres present variable pricing depending on local competition and distance from major towns. Areas with established ducted specialists hold competitive pricing, while remote properties face travel charges that change the economics of the job. Some regional operators service wider areas with reduced travel charges through efficient scheduling across multiple jobs.

What It Costs to Run

Purchase price gets all the attention and running cost is the larger number over the life of the system. Understanding what drives it lets you make a sensible decision between a cheaper system now and a lower bill every summer. Worth settling before equipment is ordered.

Star ratings are the simplest comparison and the difference is real money. A system two or three stars above another doing identical work costs less every hour it operates, and across a Sydney summer in a household that runs air conditioning heavily, the gap frequently exceeds the price difference at purchase within a few years. Ask for the rating on each quoted option rather than accepting a general claim about efficiency. The rating appears on the compliance label.

Zoning is the biggest lever you control after the equipment is chosen. Conditioning three bedrooms overnight instead of the whole house cuts consumption substantially, and that is the entire argument for spending on zone control at installation. A system with zones nobody uses independently is money spent for nothing, so think about how the household actually lives before deciding on zone count. Zones you never use separately are money spent for nothing.

Set temperature does more than people expect. Every degree lower on the thermostat increases consumption noticeably, and the difference between 24 and 21 degrees across a summer shows clearly on a quarterly bill. A correctly sized system holding 24 comfortably beats an oversized one set to 21 to compensate for humidity it never removes.

Insulation and sealing sit outside the air conditioning quote and affect it more than any equipment choice. Ceiling insulation, sealed gaps around downlights and window coverings all reduce the load the system has to meet, and improving them is usually cheaper per dollar of comfort than buying more capacity. An installer who raises this is worth listening to. Ceiling insulation is the cheapest comfort you can buy.

Maintenance affects running cost gradually and invisibly. Filters clogging and coils fouling both make the system work harder for the same output, and the decline is slow enough that nobody notices until the bill arrives. Servicing costs are set out at air conditioning servicing. Book it in autumn rather than waiting for a problem.

Maintenance and Ongoing Costs

Regular servicing holds performance up and extends equipment lifespan. Annual servicing visits cost $180 to $300 for typical residential ducted systems, covering filter cleaning, coil inspection, refrigerant checks, electrical testing and general operational assessment. Regular servicing identifies developing problems before expensive failures occur.

Duct cleaning addresses accumulated dust and debris within the ductwork network, recommended every three to five years for typical homes or more frequently after a renovation that has produced a lot of dust. Professional duct cleaning costs $300 to $600 depending on system size and accessibility, improving air quality while reducing strain on system components. That single detail often explains the gap between two quotes.

Cleaning filters between services is what holds efficiency and air quality up. Washable filters suit regular cleaning by homeowners, while disposable filters require periodic replacement at $20 to $80 depending on type and quality. Neglected filters restrict airflow, reducing efficiency while forcing components to work harder and accelerating wear. Filters are a homeowner job and the highest value one.

Expected ducted system lifespan ranges from 15 to 25 years depending on equipment quality, installation standard and maintenance attention. A well maintained premium system commonly reaches 20 years or more of reliable operation, while neglected budget installations may require major repairs or replacement within 10 to 12 years. Quality equipment and regular maintenance justify their costs through extended service life. The alternative is paying for the same lesson later.

Licensing and Compliance

Ducted air conditioning installation in NSW must be done by a licensed technician. NSW Fair Trading governs contractor licensing while Australian Refrigeration Council authorisation covers refrigerant handling. SafeWork NSW oversees workplace safety including requirements for working at heights during roof space installations. Summer roof cavities limit how long anyone can safely work up there.

Electrical work associated with ducted installations requires separate electrical licensing. Higher capacity systems often require three-phase electrical supply, with NSW energy regulations governing connection requirements. Check your installer is licensed for every part of the work or uses licensed subcontractors for specialised components. Ask who is doing the electrical work and under whose licence.

Installation standards under Standards Australia publications govern proper practice for ducted system installation. Compliant work keeps the system safe, protects the manufacturer warranties and meets insurance requirements. Non-compliant installations may void warranties, create safety hazards and cause difficulties when selling or insuring the property. Certificates of compliance should be provided upon completion.

What to Look Out For

Ask for the heat load calculation before you accept any quote. A capacity figure produced within minutes of a walk through is a guess, and the guess is usually upward. A room by room breakdown showing calculated load against selected capacity is what you are paying a professional for.

Get the duct specification in writing, including the insulation rating and the sizing. Ductwork is invisible once the ceiling closes and it is where the largest quality gap between two similar looking quotes sits. An installer who will not put the specification on the quote is telling you something about what they intend to install.

Confirm whether electrical work is included or excluded. A dedicated circuit is required, and on an older home a switchboard upgrade at $800 to $2,500 may be needed first, which is a cost of getting ducted air conditioning rather than an air conditioning cost. Two quotes that differ on this assumption are not comparable.

Ask where the outdoor unit is going and what it is rated at for noise. The position affects cost, but more importantly it affects what you hear at eleven at night in February, and a condenser under a bedroom window is a decision you live with for fifteen years. Rated sound power figures are published for every unit.

Check the return air arrangement is specified rather than assumed. An undersized return grille produces noise, restricts airflow and reduces capacity across the whole system, and it is one of the most common shortcuts on a tight quote. It should appear on the drawing as clearly as the supply outlets.

Establish both warranties, since there are two. The equipment warranty comes from the manufacturer, commonly five years with longer on the compressor, while the installation workmanship warranty comes from the installer and should run at least twelve months. A quote naming only one of them is incomplete.

What to Look Out for in Ducted AC Quotes

Evaluating ducted air conditioning quotes requires careful attention to specifications, inclusions and warranty terms. The size of the spend justifies comparing competing quotes carefully to get the best value for your specific requirements.

Equipment specifications should identify exact brands and models being supplied, including central unit capacity, zone controller type and outlet specifications. Generic descriptions like "14kW ducted system" without brand and model identification make comparison impossible and may signal an intention to substitute cheaper equipment. Request specific details for complete evaluation.

Ductwork specifications deserve careful attention because quality varies widely between installers. Quality quotes specify duct materials, insulation ratings and outlet types being supplied. Lower quotes may reflect cheaper ductwork specifications that compromise long-term performance and efficiency compared to premium materials.

Zone control details should appear clearly where zoning forms part of the installation. Basic against advanced zoning differs widely in both cost and capability, making clear specification essential for comparison. Number of zones, thermostat types and control system capabilities all affect both cost and functionality.

Warranty terms should distinguish manufacturer equipment warranties from installer workmanship warranties. Equipment warranties run five to seven years for quality brands, while installer warranties should cover at least 12 months of workmanship. Extended warranty options may be available at additional cost for added protection.

Payment on a ducted installation of any size is commonly staged aligned with project milestones. Deposits of 20 to 40 percent upon acceptance, progress payments on equipment delivery and when installation starts, with final payment upon completion are typical arrangements. Payment terms should appear clearly in the quote before you accept it.