HVAC Contractors in Hamilton

Yes for the parts that matter. Gas work requires TSSA certification, and refrigerant work requires a 313A or 313D certificate plus environmental handling certification.

Typical costs

Annual maintenance / tune-up

$130 – $250

Service call diagnostic

$100 – $200

Gas furnace replacement, high-efficiency

$4,500 – $8,500

Central air conditioner replacement

$3,800 – $7,000

Full hiring guide

Working in this area

Conservation authority approvals

Properties near the escarpment or watercourses may require conservation authority permission before excavation or construction, independently of the municipal building permit.

Older lower-city housing stock

Knob-and-tube, undersized service, original plumbing and rubble foundations are common. Budget contingency accordingly.

More about hiring in Hamilton

What heating and cooling work costs in Ontario

Ontario and federal rebate programs for heat pumps change frequently and can move the effective cost by thousands. Ask the contractor which programs they are currently registered to submit for - registration matters, because some rebates require the installer to be enrolled.

Job	Typical range
Annual maintenance / tune-upWorth it mainly for the safety inspection on gas equipment.	$130 – $250
Service call diagnosticEmergency and after-hours rates run higher.	$100 – $200
Gas furnace replacement, high-efficiencyInstalled. Venting changes and ductwork modifications push toward the top.	$4,500 – $8,500
Central air conditioner replacementOften bundled with a furnace replacement at a lower combined price.	$3,800 – $7,000
Cold-climate ducted heat pumpBefore rebates, which can be substantial. Confirm current program status.	$9,000 – $18,000
Ductless mini-split, single zoneEach additional indoor head adds roughly $1,500 to $3,000.	$4,000 – $7,000
Duct cleaningLegitimate after renovation work. Be sceptical of unsolicited offers well under this range.	$300 – $700

Planning estimates for Ontario, not quotes. Always get written quotes against the same written specification.

Questions to ask before you hire

Will you perform a heat loss and heat gain calculation, and can I see it?

Who on the crew holds the TSSA gas certificate, and at what level?

Is the equipment warranty conditional on registration or on installer certification?

What exactly is covered by your labour warranty, and for how long?

Does this quote include removal and disposal of the old equipment?

Which rebate programs are you registered to submit for, and do you handle the paperwork?

Warning signs

A replacement quote produced without anyone measuring anything or looking at your ductwork.

Sizing justified purely by matching the old unit.

Unsolicited door-to-door or phone offers for furnace or duct inspections. Ontario has a long history of aggressive HVAC door-to-door sales, and rules restricting it exist for good reason.

A rental contract presented as a purchase. Read whether you are buying equipment or signing a long-term rental with an exit fee.