Air conditioners and heat pumps come up at almost every home inspection I do in Whitby, Brampton and Richmond Hill, and they come with a lot of half-truths. Buyers hear that “the AC was checked” or that “heat pumps don’t work in Ontario winters,” and they make decisions on that. This post sorts out the most common myths from what a home inspection actually covers, so you know what you’re getting and what to ask. Your inspector is Yama Nehan, a Certified and Registered Home Inspector with about 15 years of home inspection experience and a construction engineering degree from George Brown (Building Renovations). He is also a licensed contractor with about 20 years of construction experience and the owner of Nehan Construction, and that practical construction experience is one of the main reasons clients pick him. Yama Nehan is the only one trusted to do the inspections himself. Home inspections start from $499; the final price depends on the property. Call 647-704-7100 or book an inspection online.
Key takeaways
- A home inspection checks whether the cooling or heat pump system runs and looks for visible defects. It is not a refrigerant service call, and it doesn’t open sealed components.
- Central air conditioners generally shouldn’t be run when it’s cold outside, because it can damage the compressor. In late fall and winter I report the AC as not tested and explain why.
- A heat pump can usually be checked in heating mode in winter, which is one way it differs from a straight air conditioner.
- The data plate on the outdoor unit usually shows the manufacture date and refrigerant type. That tells you more about remaining life than how clean the unit looks.
- Older units charged with R-22 refrigerant are harder and costlier to service because that refrigerant has been phased out.
- Inspection-first: Golden Home Inspections reports on condition and does not use the inspection to sell repairs.
Why cooling systems differ in Whitby, Brampton and Richmond Hill
The age of the neighbourhood drives what I find on the side of the house. In Whitby, a lot of 1990s and 2000s subdivisions still have the original builder-installed condensers, which are now well past middle age. In Brampton, I see everything from older units on 1970s and 1980s homes to newer systems added when a basement was finished or a second unit was created. In Richmond Hill, larger two-storey homes often have bigger systems, and some newer or renovated homes have switched to a heat pump, sometimes paired with a gas furnace as a backup. Each of these setups needs a slightly different look.
Myth vs fact: AC and heat pumps at a home inspection
Myth 1: “The inspector checked the AC, so it’s fine.”
Fact: A home inspection is visual and non-invasive. When it’s warm enough to operate safely, I run the system from the thermostat, confirm the outdoor unit starts, listen for unusual noise, and check that the air coming out of the registers is noticeably cooler than the air going back to the return. I also look at the condenser’s condition, its clearances, the refrigerant lines and their insulation, the electrical disconnect, and the condensate drain at the indoor coil. I don’t measure the refrigerant charge, open sealed components or take the unit apart. That is HVAC technician work, and the report will say when a technician should take a closer look.
Myth 2: “You can test an air conditioner any time of year.”
Fact: Running a central AC compressor when it’s cold outside can damage it, and most manufacturers advise against it. So during a late-fall, winter or early-spring inspection, I don’t force the AC on. I still inspect what I can see, note the age from the data plate, and report the cooling as not tested because of outdoor temperature. If that matters to you, ask the seller about the service history or arrange a technician’s check when the weather allows. Our post on winter home inspections in Ontario covers the other things that change in cold weather.
Myth 3: “Heat pumps don’t work in Ontario winters.”
Fact: Older heat pumps lost a lot of their output in deep cold, which is where this idea comes from. Many newer cold-climate models are designed to keep heating at much lower temperatures, and many GTA installs also keep a furnace or electric backup for the coldest days. What I check is practical: does the system run in heating mode, does warm air reach the rooms, is the outdoor unit raised and clear of snow and ice, does it defrost normally, and is there a working backup. I won’t tell you a heat pump’s rated output from looking at it; the model number and the installer’s paperwork answer that.
Myth 4: “A clean outdoor unit means a young system.”
Fact: Sellers sometimes hose down the condenser before listing. Age comes from the data plate, not the paint. Central AC units commonly last somewhere in the 10 to 20 year range depending on the equipment, how it was installed and how it was maintained, so a 17-year-old unit in Whitby that cools well today is still one to budget for. I note the manufacture date in the report whenever the plate is readable.
Myth 5: “Refrigerant type doesn’t matter to a buyer.”
Fact: It does. Older systems that use R-22 refrigerant are harder to service because R-22 has been phased out, so topping one up can be expensive and a leak often turns into a replacement conversation. Newer systems use other refrigerants. The data plate usually lists the type, and I note it when I can read it.
Myth 6: “The AC and the furnace are separate, so the AC doesn’t affect the rest of the house.”
Fact: In most GTA houses the cooling coil sits on top of the furnace and shares its blower and ductwork. A blocked condensate drain at that coil can leak water into the furnace or onto a finished basement floor, and a dirty filter hurts both heating and cooling. That’s why I look at the furnace, coil, drain line and filter together. For the heating side, see 7 furnace mistakes buyers make at a home inspection.
Myth 7: “A ductless mini-split is too simple to need inspecting.”
Fact: Ductless heads are common in Brampton basement units, Richmond Hill additions and condo-townhouse conversions. I check that each head runs (weather permitting for cooling), that condensate lines drain properly and don’t stain the wall below, that the outdoor unit is securely mounted, and that line-set penetrations through the wall are sealed. Water staining under a wall-mounted head is one of the more common things I flag.
AC vs heat pump: what an inspection can and can’t confirm
| Item | Central air conditioner | Heat pump |
|---|---|---|
| Can it be run in cold weather? | Cooling is usually not tested when it’s cold outside | Heating mode can usually be checked in winter |
| Age and refrigerant | From the data plate when readable | From the data plate when readable |
| Backup heat | Not applicable (the furnace heats) | I check for a furnace or electric backup and whether it runs |
| Outdoor unit | Level, clear, disconnect present, lines insulated | Same, plus raised above snow line and drains defrost water away from walkways |
| Refrigerant charge and efficiency | Not measured; refer to an HVAC technician | Not measured; refer to an HVAC technician |
What to bring up at the inspection
- Ask the seller for the installation date, any service records and whether the system is owned or rented. Rental agreements on HVAC equipment are common in the GTA and can transfer to the buyer.
- If it’s a heat pump, ask for the model number and what the backup heat source is.
- If the inspection happens in cold weather, plan for a technician’s check of the AC in spring, or ask for the most recent service invoice.
- Check the filter size and location so you know how to change it after you move in.
A situation we often see
A buyer in a 2000s Whitby or Brampton subdivision is told by the listing that the house has “central air.” At the inspection in November, the condenser looks clean, but the data plate shows it’s around the age where replacement becomes a budgeting question, and it’s an R-22 unit. It can’t be test-run in the cold, so the report notes it as not tested and recommends a technician’s assessment. Nothing is “wrong” yet, but the buyer goes into closing knowing the real picture instead of assuming the AC is new.
Where AC and heat pump checks fit in a full inspection
Cooling is one part of a full home inspection, along with the roof, structure, electrical, plumbing, heating, insulation and ventilation. If you’re buying in Whitby, Brampton or Richmond Hill, the same visit covers the whole house. If the home is older or you’re worried about things like mould near a leaking condensate line, you can also ask about home hazard testing. Reports reach clients within 24 hours.
FAQ
Does a home inspection test the air conditioner?
Yes, when the weather allows. I run it from the thermostat, check that it cools and look for visible defects. In cold weather the AC is usually reported as not tested, because running the compressor in the cold can damage it.
Can a heat pump be inspected in winter?
Usually, yes. A heat pump can be checked in heating mode, and I also look at the outdoor unit’s clearance from snow, defrost drainage and the backup heat source.
Does the inspector check refrigerant levels?
No. Measuring the refrigerant charge needs an HVAC technician with gauges. I note the refrigerant type from the data plate when it’s readable and recommend a technician when I see signs of a problem.
How do I know how old the AC is?
The data plate on the outdoor unit usually shows a manufacture date or a serial number that encodes it. I record it in the report when I can read it.
Which cities do you cover?
Golden Home Inspections serves Whitby, Brampton, Richmond Hill, Toronto, Mississauga, Oakville, Vaughan, Markham, Pickering, Ajax, Oshawa and nearby GTA cities.
Book your inspection: call 647-704-7100, email contact@goldenhomeinspections.ca, or book online. Golden Home Inspections is based in Toronto, Ontario, and is open 9 AM to 8 PM, seven days a week.
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