Whole-home cooling that works with your existing forced-air system — assessed, sized, and installed for your specific home in Metro Vancouver.
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How It Works
Central AC cools the entire home through the same duct network used for heating. An outdoor condensing unit, refrigerant lines, and an indoor coil (installed in the air handler) work together to remove heat and humidity from circulated air.
Refrigerant handling is licensed work. The refrigerant circuit is charged, tested, and commissioned by a certified technician. Homeowners should not attempt to add, move, or alter refrigerant — it's a regulated substance and handling requires equipment and certification.
The compressor and condenser coil sit outside the home. This is where heat extracted from inside is released to the outdoor air. Placement affects airflow, sound, serviceability, and refrigerant line length.
The coil installs inside or above the furnace air handler, in the duct plenum. As warm air passes over it, heat transfers into the refrigerant circuit. The coil must be matched to the outdoor unit and fit the existing air handler.
Insulated copper lines carry refrigerant between the outdoor and indoor units. Routing through the home needs to account for access, penetrations, line length limits, and condensation management.
The existing furnace blower circulates cooled air through the supply and return duct system. Duct capacity and balance affect how evenly cooling reaches each room and whether airflow modifications are needed.
Cooling removes humidity from indoor air, which must be collected and drained. The condensate drain connects to a floor drain, utility sink, or condensate pump depending on the installation location and available drainage.
A cooling-capable thermostat controls the system. Existing thermostats that only managed heat may need to be replaced or upgraded. Smart thermostat compatibility depends on the equipment and wiring.
Compatibility
Not every home is the same starting point. The installation scope — and overall project — depends on what's already in place. An assessment determines your actual situation.
If your home uses radiant heat, baseboards, or has no central air distribution, a ductless mini-split or heat pump system is typically the more practical path for cooling. See our Air Conditioning Services for the full range of options.
Furnace Integration
Adding central AC to a home that already has a forced-air furnace is a different project from one requiring new duct distribution. Here's what the integration actually involves.
The evaporator coil must physically fit the air handler cabinet and match the outdoor unit's refrigerant circuit. Not all furnaces accept a coil add-on without modification — this is verified during the assessment, not assumed.
The furnace blower must move sufficient airflow for cooling as well as heating. Undersized blower capacity reduces cooling performance and can increase system stress. Variable-speed blower motors handle dual-mode operation more efficiently.
Heating systems often have fewer return air paths than cooling systems need. Inadequate return airflow causes pressure imbalance, reduced comfort, and can strain equipment. Return additions may be part of the project scope.
Lines run from the indoor coil to the outdoor unit, typically through the mechanical room, wall cavities, or utility spaces. The routing path affects line length, penetrations, and insulation requirements.
Central AC equipment requires a dedicated circuit from the electrical panel. Breaker size and wire gauge are equipment-specific. Panel capacity is assessed before quoting electrical scope.
Pairing new AC equipment with a furnace nearing end of life may not be the best investment. We'll note the furnace condition during the assessment so you can weigh your options with full information.
If your furnace is aging or due for replacement, it may make sense to coordinate both projects. See our Furnace Services page for more on what's involved.
Equipment Sizing
AC capacity is measured in BTUs or tons. The right size for your home isn't determined by square footage alone — it requires a proper load calculation.
Floor area, ceiling height, wall and ceiling insulation values, window area, glazing type, solar orientation, shading, local design temperatures, occupancy, and internal heat loads all factor into the calculation.
An AC unit that's too large cools quickly and shuts off before completing a full humidity-removal cycle. Short-cycling leaves the home feeling clammy even when the air temperature is comfortable, and increases wear on compressor components.
A unit too small for the load runs continuously during peak summer days and still can't meet the thermostat setpoint. It doesn't save energy — it just falls short when it matters most.
Comparing Options
Both use refrigerant-cycle technology to cool a space. The key difference is what else the system does.
| Factor | Central AC | Heat Pump |
|---|---|---|
| Cooling | Yes | Yes |
| Heating | No — separate heating system required | Yes — provides both heating and cooling |
| Best fit | Homes keeping their existing furnace | Homes wanting to reduce or replace fossil fuel heating |
| Rebate eligibility | Typically not eligible for heat pump rebates | May qualify for BC Hydro and CleanBC rebates |
| Installation scope | Outdoor unit, coil, lines, electrical | Same plus reversing valve; no gas line retained |
Project Cost
Central AC installation cost varies based on equipment selection, ductwork scope, electrical work, routing conditions, and access. We don't publish guessed ranges — a proper quote requires an assessment of your specific home.
Outdoor condensing unit capacity and efficiency rating affect equipment cost. Higher SEER2 ratings typically cost more upfront but reduce operating costs. Equipment must be matched to the indoor coil.
Adding return air paths, sealing leaks, or resizing runs for proper airflow balance adds to project scope. Homes with adequate existing ductwork have lower duct-related costs.
A dedicated circuit, breaker, and conduit run from the panel to the outdoor unit is required. The scope depends on panel location, available capacity, and how far the equipment is from the panel.
Longer or more complex routing paths — through multiple floors, around obstacles, or requiring wall penetrations — take more materials and labour than straightforward runs.
Ground-level placement on a pad is straightforward. Roof mounts, elevated platforms, or confined locations (strata patios, tight side yards) add installation complexity.
Air handler location, basement or crawlspace access, attic clearances, and wall construction all affect labour time and what's involved in completing the installation cleanly.
For a complete look at what drives AC installation pricing in Vancouver — including the difference between straightforward and complex projects — see our AC Installation Cost Vancouver guide.
After Installation
A central AC system performs best with regular maintenance and prompt attention to any performance issues.
Before the cooling season, the system should be inspected: coil cleaning, airflow check, condensate drain test, refrigerant-system performance review within verified service scope, and electrical connections. Seasonal prep reduces the chance of a failure on the first hot day of the year.
The furnace filter protects both the heating and cooling equipment. A clogged filter restricts airflow, reduces cooling performance, and can cause the evaporator coil to ice over. Filter replacement frequency depends on filter type and household conditions.
Warm air from registers, weak airflow, unexpected cycling, unusual sounds, water around the indoor unit, or a system that won't start are all reasons to call. See our AC Repair Vancouver page for how we approach diagnosis.
Common Questions
We assess your existing system, ductwork, and electrical before recommending equipment — so the quote reflects your actual project.
Request a Central AC AssessmentCall us: (250) 201-2030