BC's mild winters and warm summers — combined with the CleanBC push toward electrification — have changed how most Metro Vancouver homeowners should think about cooling. Here is a clear look at what each system actually does, where each one makes sense, and how BC's rebate landscape factors into the decision.
Both systems can use your existing ductwork and both cool your home the same way — by moving heat from inside to outside. The critical difference is what happens when cooling season ends.
A central air conditioner runs a refrigerant cycle in one direction only — it extracts heat from inside your home and dumps it outdoors. When it gets cold, the system shuts down entirely.
For heating, a central AC home depends on a separate system: a gas furnace, boiler, or electric baseboards. You are buying and operating two distinct pieces of equipment to handle climate year-round.
A heat pump runs the same refrigerant cycle as central AC for cooling — they are mechanically similar. The difference is a reversing valve: in heating mode, the cycle runs backwards, extracting heat from outdoor air and moving it inside.
One system handles both seasons. In Metro Vancouver's climate, a cold-climate heat pump can serve as the primary heating and cooling system without a separate furnace as backup.
For most Metro Vancouver homes being updated today, a heat pump is the more practical choice. Here is why.
Instead of buying and maintaining a central AC unit and a separate furnace, a heat pump handles both. This simplifies equipment, reduces the number of service calls, and means you have one contractor managing your year-round comfort system.
BC's CleanBC program offers rebates for qualifying heat pump installations as part of the province's electrification goals. Central air conditioning installations do not qualify. Rebates can significantly change the net cost comparison — see our rebates page for current program details.
Metro Vancouver rarely sees sustained temperatures that challenge a modern heat pump. Cold-climate heat pumps — rated to operate efficiently at -15°C and below — maintain full heating output through virtually every winter day the Lower Mainland experiences. Unlike northern Alberta or interior BC, our winters do not demand gas backup by default.
BC Hydro's electricity is predominantly from hydroelectric sources, which makes electrifying heating a meaningful emissions reduction step. Provincial policy — CleanBC rebates, the forthcoming building code direction — is aligned with moving homes away from fossil-fuel heating. A heat pump positions your home correctly for where regulations and incentive programs are heading.
A heat pump in cooling mode is functionally the same as a central air conditioner. SEER2 ratings are comparable at equivalent equipment classes. Switching to a heat pump does not mean compromising on summer cooling.
There are real situations where adding central AC rather than a heat pump is a reasonable choice. These are not the majority, but they exist.
If you recently installed or have a relatively new high-efficiency gas furnace, replacing the entire heating system prematurely to install a heat pump may not pencil out. In this case, adding central AC for cooling and leaving the furnace in service until it reaches end-of-life can be reasonable — with the plan to transition to a heat pump at that point.
If your existing heating system is working well and you truly only want to add cooling to your home, central AC accomplishes that at lower equipment cost than a heat pump. This logic weakens considerably once CleanBC rebates are factored in — but it remains a valid scenario for some homeowners.
Heat pump equipment typically costs more upfront than a comparable central AC unit before rebates. If budget constraints are the deciding factor and you cannot wait for the rebate processing timeline, central AC may be the near-term option. Revisit the math with current rebate amounts before assuming central AC is cheaper — the gap is often smaller than expected.
Both systems are rated using standardized efficiency metrics. Understanding what these ratings mean helps you compare equipment fairly.
| Metric | Applies To | What It Measures |
|---|---|---|
| SEER2 | Central AC Heat Pump | Seasonal Energy Efficiency Ratio — cooling efficiency over a full season. Higher is better. Both central AC and heat pumps are rated by SEER2 for their cooling function, making them directly comparable on this metric. |
| HSPF2 | Heat Pump | Heating Seasonal Performance Factor — heating efficiency over a full season. Central AC has no heating function and therefore no HSPF2 rating. A heat pump's HSPF2 reflects how efficiently it heats, which is relevant to total annual energy use. |
| Annual energy use | Central AC Heat Pump | A heat pump replacing both a central AC unit and a gas furnace can reduce total annual household energy costs — particularly given BC Hydro's electricity rates relative to natural gas — but the result depends on home size, local rates, and the equipment being replaced. No single figure applies to all homes. |
Ductwork is often one of the bigger unknowns in an HVAC upgrade. Here is how it factors into the central AC vs heat pump decision.
If your home already has a forced-air system — typically paired with a gas furnace — that ductwork can serve both central AC and a heat pump. The indoor coil (air handler or evaporator coil) sits in the duct system either way. Duct condition matters for both options equally: leaky or undersized ducts reduce efficiency and comfort regardless of which system is installed.
Both systems require refrigerant lines connecting the indoor coil to the outdoor unit. If you are replacing an existing central AC system with a heat pump, the existing line set may be reusable depending on its condition, size, and the refrigerant type of the new equipment. A site assessment will determine whether the lines need to be replaced or can be kept.
Homes without existing ductwork — condos, older homes with baseboard heating, additions — are candidates for ductless mini-split heat pumps rather than central systems. Mini-splits deliver heating and cooling directly to each zone without ducts, and also qualify for CleanBC rebates. See our heat pumps page for more on ductless options.
Before installing either system, a proper assessment of existing ductwork is part of sizing the equipment correctly. An oversized or undersized system — or one paired with leaky ducts — will underperform regardless of the equipment's efficiency rating. Climax Energy includes a ductwork review as part of the installation process.
The questions Metro Vancouver homeowners ask most often when weighing these two options.
Talk to a Climax Energy expert — we install both central AC and heat pumps across Metro Vancouver. We'll assess your home's ductwork, existing equipment, and current rebate eligibility to give you a clear recommendation without a sales pitch.