How often should you have furnace maintenance?
Once a year, before the heating season. What a proper annual tune-up on a gas furnace covers, why it matters for your warranty and your gas bill, and what you can do yourself between visits.
Hamilton heating contractor
Furnace repair, installation and maintenance in Hamilton
365 Heat is a heating and HVAC contractor for homeowners in Hamilton, Dundas, Ancaster, Burlington and the surrounding communities. TSSA-certified gas technicians, a written price before any work starts, and a phone that is answered every day of the year.
Trusted by homeowners in Hamilton, Dundas and the surrounding area
24/7 emergency(365) 389-4320
TSSA-certifiedLicensed gas technicians
ServingHamilton, Burlington, Stoney Creek and 5 more communitiesWhat we do
Furnace installation, maintenance and repair in Hamilton
Three things done properly: putting the right furnace in, keeping it running at its best, and fixing it quickly when it fails. Plus the gas work and air-quality upgrades a heating contractor should handle.
Installation
Furnace Installation & Replacement
Whether your old furnace has given out in January or you are replacing it on your own schedule, we fit a high-efficiency unit that matches the home, the ductwork and the way you live in it. We install across Hamilton, Burlington and the surrounding communities.
Learn more
Maintenance
Furnace Maintenance & Tune-Ups
Furnaces fail on the coldest days because that is when they work hardest. An annual tune-up finds the worn igniter, the dirty flame sensor and the cracked heat exchanger before they find you. Tune-ups are booked across Hamilton, Ancaster and the surrounding communities.
Learn more
Repair
Furnace Repair
From a failed igniter to a seized inducer motor, we repair every make and model of gas and propane furnace. You get a straight diagnosis and a firm price before any part goes in. Same-day calls across Hamilton, Stoney Creek and the surrounding communities.
Learn more
Emergency
Emergency Furnace Repair
An Ontario house loses heat fast when the furnace stops in a cold snap, and frozen pipes follow. Our emergency line is answered around the clock and a technician is dispatched across Hamilton, Burlington and the surrounding communities.
Learn moreHow it works
From first call to warm house
- 1
Call or send a message
Tell us what the furnace is doing. No-heat calls get the first available slot, same day wherever the schedule allows; for quotes we arrange a visit at your convenience.
- 2
Diagnosis or assessment
A technician tests the system (or measures the house for a replacement) and explains what they found in plain language.
- 3
Written price, your decision
You get the repair price, or the installation options, in writing. Nothing happens until you say go.
- 4
Work done, tested, cleaned up
Repair or install completed, combustion-tested, inspected where required, and the warranty paperwork in your hand.
Beyond the furnace
Boilers, water heaters, gas lines and air quality
The boilers, water heaters, gas work and air-quality upgrades that live alongside a furnace in a Hamilton home.
Boilers
Boilers & Radiant Heating
Many of the older homes in Dundas and Hamilton heat with hot water, and newer builds are adding in-floor radiant. We install, service and repair the boilers behind both.
Learn more
Water heaters
Water Heaters
A water heater runs the same gas line and venting as your furnace, so it belongs with the same technician. We install and repair conventional tanks and on-demand tankless units across Hamilton, Burlington and the surrounding communities.
Learn more
Gas work
Gas Fireplaces & Gas Lines
Any new gas appliance needs a line run to it by a TSSA-certified technician. We handle fireplaces, ranges, dryers, pool heaters, outdoor barbecues and standby generators across Hamilton, Dundas and the surrounding communities.
Learn more
Air & ducts
Ductwork, Humidifiers & Air Filtration
The best furnace cannot overcome leaky ducts or a dry, dusty house. We seal and rebalance ductwork and fit the humidifiers and filters that make winter indoors comfortable, for homes across Hamilton, Waterdown and the surrounding communities.
Learn moreWhy homeowners call us
Honest heating work, done by the book
TSSA-certified gas technicians
Every gas furnace, boiler, water heater and gas line is worked on by technicians certified under Ontario's Technical Standards and Safety Authority, as the law requires.
Written price before work starts
You see the number and approve it before any part is fitted. No surprises on the invoice.
Repair-or-replace honesty
We give you both numbers and the reasoning. Plenty of furnaces we are asked to replace just need a part.
Stocked trucks
Igniters, flame sensors, capacitors, pressure switches and common control boards ride with us, so most repairs finish in one visit.
Clean work
Drop cloths down, boot covers on, old equipment taken away, workspace swept before we leave.
Warranty in writing
Manufacturer parts warranty registered for you, and our own labour warranty on every repair and installation.
Guides
Plain answers for Hamilton-area homeowners
What a furnace costs, when to repair and when to replace, why a furnace stops, and how to keep an Ontario house warm for less. Written for homeowners, not technicians.
What a new furnace costs in Ontario (2026)
Installed prices for single-stage, two-stage and modulating gas furnaces in the Hamilton area, what moves the number, and the questions that stop you overpaying.
Furnace rebates in Ontario: what is open in 2026
Where the rebate money sits in Ontario right now, why most of it is for heat pumps rather than gas furnaces, what still applies to a furnace replacement, and how the paperwork works.
How long does a furnace last?
Fifteen to twenty years for a well-kept gas furnace, less for a neglected one. What shortens the life, the signs the end is near, and how to decide between one more repair and a new unit.
Furnace not turning on? A ten-minute checklist
The thermostat, switch, breaker, filter, vents and reset that fix a surprising share of no-heat calls, in the order to try them, and the signs that mean stop and call.
Why is my furnace blowing cold air?
The blower is running but the air is cold: the six causes in the order they happen, which ones you can fix yourself, and which mean the burner is not lighting at all.
Where we work
Furnace service across Hamilton, Burlington and Grimsby
Technicians based locally, so a no-heat call does not wait on a long drive.
From the lower city and the Mountain to Dundas, Ancaster, Waterdown and Stoney Creek, plus Burlington from Aldershot to the lakeshore, the propane homes of rural Flamborough and Grimsby on the Niagara bench. If your community is not listed, call anyway; we often take jobs just outside these areas when the schedule allows.
Common questions
Furnace questions, answered
How much does furnace repair cost in Hamilton?
A diagnostic visit is typically $99 to $149 in the Hamilton area and is credited against the repair when you go ahead. Common fixes, parts and labour: a hot-surface igniter $200 to $350, a flame sensor $150 to $250, a capacitor $150 to $250, a pressure switch $200 to $350, an inducer motor $450 to $800, a blower motor $500 to $950, a control board $450 to $850. You get the exact price in writing before any part is fitted, and after-hours calls are quoted on the phone before anyone is dispatched. Details on the furnace repair page.
My furnace is running but blowing cold air. What is wrong?
Common causes are a dirty filter restricting airflow, a failed hot-surface igniter or flame sensor, a tripped limit switch from overheating, or a thermostat set to "fan on" rather than "auto". Check the filter and thermostat first; if the burner is not lighting, call for a repair. The causes in order, and what you can check yourself, are in why is my furnace blowing cold air?
How long does a furnace last?
A well-maintained gas furnace typically runs 15 to 20 years. A mid-efficiency unit from the 1990s is at the end of that range now, and a high-efficiency furnace installed around 2010 is approaching it. Three things shorten the life: skipped annual maintenance, an oversized unit that short-cycles, and a clogged filter that overheats the heat exchanger. Past 15 years, repairs become more frequent and parts harder to find, and a new 96 percent furnace usually pays back part of its cost in lower gas bills. The one fault that ends a furnace at any age is a cracked heat exchanger. We will tell you plainly whether a repair or a replacement makes more sense for your unit; the full reasoning is in how long does a furnace last?
Trusted by homeowners in Hamilton, Dundas and the surrounding area
Never left out in the cold.
Call for same-day service or send a message. We will get back to you quickly.