Furnace clicking but not lighting, blowing cold air, short-cycling, CO alarm going off at −30? HVAC Services Ottawa provides furnace repair, maintenance, installation and replacement in Ottawa, ON for gas, propane and electric furnaces — Carrier, Lennox, Goodman, Trane, Rheem, Bryant, Daikin — in Orléans, Kanata, Nepean, Barrhaven, Gloucester and Stittsville. Igniters, flame sensors and blower motors on the truck, flat-rate price in writing, most furnace service completed on the first visit.
When to call
What you notice upstairs, and what it usually means in the basement. Switch the furnace off at the thermostat before calling, unless you smell gas (see the red box below).
Blower runs, air comes out cold: burner not lighting, high-limit tripped, or on an electric furnace, burnt elements or a dead sequencer.
Click, click, nothing. Cracked hot-surface igniter, dirty flame sensor, pilot that won't stay lit, or a pressure switch that won't prove the vent. The number-one gas and propane furnace call in Ottawa.
On for two minutes, off, on again. Clogged filter, overheating, an oversized furnace or a badly placed thermostat. Wears parts out and pushes the Enbridge bill up.
A boom on ignition is gas pooling before it lights. A squeal is the blower or inducer motor. A rattle is a loose panel or a cracked heat exchanger flexing. None of them get better on their own.
Count the flashes behind the sight glass before you cut power. Pressure switch, limit, flame loss, ignition lockout: every brand has its table and our techs know them.
Get everyone outside, call 911, then us. Cracked heat exchanger, vent blocked by snow or a nest, backdrafting. We don't restart a furnace until the source is found.
Don't flip switches, don't light anything. Get everyone out of the house, then call Enbridge's gas emergency line (or your propane supplier) and 911. Once the gas company has made it safe, we come and fix the furnace.
A furnace that quits at −30 means a house losing a degree an hour and pipes freezing by morning. We don't give you a slot on Thursday: the nearest technician is dispatched now, to Orléans, Kanata, Nepean, Barrhaven, Gloucester or Stittsville, day or night.
Which one do you have?
All three heat the same ducts; they fail differently and need different parts. The rating plate or your utility bill tells you which one you've got.
Natural gas · Enbridge
What most of Ottawa runs on: Kanata, Barrhaven, Orléans, Nepean and nearly every subdivision built since 1980. Cheapest to run per degree, fast recovery. Parts that fail: igniter, flame sensor, pressure switch, gas valve, inducer, heat exchanger after 15 years.
Propane · off the gas grid
Manotick, Greely, Carp, Richmond, Cumberland and acreages beyond the Enbridge lines. Same furnace as gas but with different orifices, regulator and pressure: a sloppy conversion gives yellow flames and soot. Watch the tank level below 20% in a cold snap.
Electric · Hydro Ottawa
Condos, townhomes without gas service, rural homes paired with a heat pump. No combustion, no chimney, no CO. Costly to run alone, so most are backup for a heat pump. Parts that fail: elements, sequencer, relays, limit, blower motor.
Still on oil? We repair oil furnaces too (nozzle, pump, cad cell, filter) and replace them when the tank or heat exchanger is done.
New and replacement
Sized to the house, not to the biggest unit in stock. Old furnace out, new one set, venting, gas or electrical, thermostat and ducts connected, then a combustion test before we leave.
New build, addition, finished basement, secondary suite.
Cracked heat exchanger, 15–20 years old, or a third breakdown in two winters. Usually one day, on the existing ducts.
Where Enbridge runs down your street, converting cuts the heating bill and removes the oil tank. Rebate programs exist in Ontario; rules change, we tell you what applies.
95–98% AFUE condensing units, PVC vent out the wall instead of the chimney, variable-speed ECM blower. Manufacturer warranty on the unit and heat exchanger, registered in your name.
Once a year, before the first cold snap
Most January furnace emergencies were visible in October. A furnace service takes about an hour, keeps the efficiency, keeps the manufacturer warranty valid (most require documented annual maintenance), and finds the cracked heat exchanger before the CO alarm does.
01
Burners, igniter, flame sensor, pressure switch, limit, motors, belt, wiring, thermostat. Amp draw and temperature rise measured.
02
Burners, flame sensor, blower wheel, condensate trap and drain on condensing units. A clean furnace lights first try and burns less gas.
03
Filter replaced, ducts, dampers and return checked. A clogged filter is the number-one cause of overheating and short cycling.
04
Exchanger inspected for cracks, combustion analyzed, CO measured at the vent and in the house, venting checked. Written report handed over.
Honest call
A gas furnace serviced every year runs 18 to 20 years in Ottawa; an electric furnace often longer. The technician tells you where yours is and what a repair is worth against a new unit, with both numbers on paper.
Every part and every new furnace is covered by the manufacturer warranty; we hand you the paperwork and register it.
Commercial
Offices on Bank Street, retail in Orléans and Kanata, restaurants, garages and multi-unit buildings in Vanier and Centretown with a furnace per suite: a commercial furnace down means tenants calling and staff sent home. We repair and maintain high-capacity gas and propane furnaces, rooftop units and multi-zone systems, with annual maintenance contracts and priority dispatch for buildings.
Every brand sold in Ontario, OEM parts whenever the manufacturer warranty requires them.
FAQ
An igniter, flame sensor or capacitor is the low end; a board, blower motor or gas valve the middle; a heat exchanger the top, where we compare against a new furnace. The technician diagnoses on site and gives you a flat-rate price in writing before starting. No guessing over the phone.
Thermostat on heat and set above room temperature; filter not black; the switch on the side of the furnace and the breaker both on; the outdoor vent not buried in snow. If all four are fine and the air is still cold, it's the igniter, limit or elements. Call us. If you smell gas, leave the house and call Enbridge first.
Yes, 24/7, across Ottawa: Orléans, Kanata, Nepean, Barrhaven, Gloucester, Stittsville, Riverside South, plus Manotick, Greely, Carp and Rockland. Call (613) 701-6014; the nearest technician is dispatched and most repairs are done on the first visit.
Once a year, ideally September or October before the first cold snap. That's when we find the cracked exchanger, the dirty flame sensor or the blocked vent, not at 2 a.m. in January. Change the filter every three months in between.
If Enbridge gas is on your street, usually yes: lower running cost, no oil tank, no delivery. If it isn't, a propane furnace or a cold-climate heat pump with electric backup is often the better move. Ontario and federal rebate programs may apply; we tell you which ones at the time, without promising a number.
Often, but not always: a gas water heater, a fireplace or a car in an attached garage can also be the source. Either way, get out, call 911, then us. We don't restart any appliance until the source is found and fixed.
Same-day furnace repair, gas, propane or electric, flat-rate price in writing. 24/7.
Book a service
Furnace, heat pump, boiler or water heater: leave your details and we'll call back to set a time and give you a flat-rate price.
No heat, no hot water, AC down: our emergency line answers 24/7, anywhere in Ottawa.
(613) 701-6014We call back within the hour. For emergencies call (613) 701-6014.
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Reviews
Gas, propane and electric furnaces in Orléans, Kanata, Nepean, Barrhaven, Gloucester, Stittsville and Manotick.
Gas furnace clicking and not lighting, Friday night, −28. I typed "furnace repair near me" and HVAC Services Ottawa picked up on the second ring. Tech was in Orléans in under an hour: cracked igniter, replaced from the truck in 40 minutes. The price he quoted on the phone was the price on the invoice.
Lisa G.
Orléans
Jan 16, 2026
Annual furnace maintenance in Ottawa, booked every October since we bought in Kanata. Burners and flame sensor cleaned, combustion tested, CO checked, heat exchanger scoped with a camera, written report with the numbers. This year they found the vent half blocked by a wasp nest. One hour, flat rate, same tech each time.
Rob T.
Kanata
Oct 7, 2026
Propane furnace out in Manotick locking out every night. Two other heating companies had been and gone. Their tech found a failed pressure switch and a frozen condensate line, then corrected the regulator pressure the last guy had set wrong. A month later, zero lockouts. Proper propane furnace repair, done once.
Mark D.
Manotick
Feb 4, 2026
Electric furnace blowing cold air with a baby in the house, 14 degrees inside. Googled "emergency furnace repair near me" on a Sunday; they were the only ones who could come that afternoon to Riverside South. Two burnt elements and a dead sequencer, swapped the same visit. He showed me the blackened elements before he left.
Amanda P.
Riverside South
Jan 25, 2026
24-year-old oil furnace in Nepean with a cracked heat exchanger. They showed me the crack on the camera screen and said straight that repairing it wasn't worth it. Furnace replacement in Ottawa done in one day: 96% gas furnace, PVC vent out the wall, oil tank hauled away, manufacturer warranty registered for us. Enbridge bill is about half what we paid for oil.
Daniel R.
Nepean
Mar 12, 2026
I run a shop on Bank Street in the Glebe. Commercial gas furnace died Saturday morning, customers in coats, staff cold. HVAC Services Ottawa was here before noon: flame sensor and a control board, both on the truck. They put our two units on a yearly furnace service contract after that. Fast and straight with us.
Nadia H.
The Glebe · retail
Nov 29, 2026
Service area
Orléans to Kanata, Barrhaven to Rockland, 24/7. We dispatch the technician closest to your address, not whoever is free first.
Don't see your area? (613) 701-6014, we likely cover it.
East
Orléans, Cumberland, Rockland
West
Kanata, Stittsville, Carp
South
Barrhaven, Riverside South, Manotick
Central
Glebe, Westboro, Centretown, Old Ottawa South
Nepean & Gloucester
Nepean, Gloucester, Vanier, Sandy Hill
Rural
Greely, Richmond, Embrun, Russell, Kemptville
