Normally included
- Heat loss and heat gain calculation for sizing
- Equipment supply and installation
- Venting and combustion air
- Duct modification and balancing
- Condensate management
- Thermostat and controls
- Permit and gas inspection where required

Yovan Gabric | REALTOR®Mechanical & electrical
Equipment gets replaced; ductwork almost never does. That is why a correctly sized system in a poorly designed duct layout still leaves the second floor hot in August — and why 'we'll just put in a bigger furnace' is usually the wrong answer.
Also called: Furnace · Heat pump · Air conditioning · Ductwork
Licensed work
Work on gas-fired equipment in Ontario requires a technician certified by the Technical Standards and Safety Authority — G1, G2 or G3 depending on scope — working for a registered contractor. Refrigerant handling requires separate certification. Ask which certification covers the specific work being done.
Scope
Most disputes begin with an exclusion nobody read. Confirm both columns against any quote you receive before comparing prices.
What moves the price
These are the decisions and conditions that actually drive cost on this trade. Understand them and a wide spread between quotes usually explains itself.
Whether a proper heat loss and heat gain calculation is done, or the new unit is simply matched to the old one's size.
Fuel and system type — furnace, air conditioner, cold-climate heat pump, or a hybrid of gas and heat pump.
Duct condition and capacity. Adding cooling to ducts designed only for heating often needs return air added.
Venting route for a high-efficiency unit, which vents through the wall rather than the chimney.
Electrical capacity, which frequently limits heat pump options in older homes.
Whether ventilation — an HRV or ERV — is included, which matters more in a tightly sealed house.
Cost ranges
Rather than repeat a national average that means nothing in Halton, this table stays empty until the figures are ones I have priced myself. The cost drivers above are the part that matters most anyway—they explain why the numbers vary.
If you want a real number for your property, that is what the walkthrough is for.
Book a free walkthrough →Before you sign
If any of these is missing, ask for it in writing before you compare prices. A quote that cannot answer these questions is not a quote—it is an estimate wearing a suit.
Walk away
None of these are matters of taste. Each one has a specific consequence, and each is visible before you commit any money.
If you are selling
Age and service records matter more than brand. A ten-year-old furnace with annual service records is an easier conversation than a five-year-old one with none.
Ready to hire
Contractors on the bench supply current WSIB, liability insurance and licence documentation, and I have walked their finished work. No referral fee is accepted from any of them.
A straightforward first conversation
Tell me where you are in the process. We’ll discuss the property, the market, and the questions that matter most to you.