Boiler Repair Ottawa, ON | Service & Installation

Boiler not heating, radiators cold or pressure dropping? Our TSSA-certified gas technicians provide boiler repair in Ottawa 24/7, plus annual boiler service and new combi and condensing installations for homes with radiators or in-floor hydronic heating.

(613) 801-5407 Book a Boiler Repair

24/7 no-heat service

TSSA-certified gas technicians

Gas boiler repair & service

Combi & condensing installs

Radiator & hydronic heating

Licensed & insured

Gas technician repairing a boiler in an Ottawa home

Boiler Not Heating? Check This First

Four quick checks before you call. Sometimes the fix takes a minute.

Thermostat

Make sure it's set to heat and a few degrees above room temperature. Blank screen? Replace the batteries.

Power Switch & Breaker

Boilers have a service switch near the unit that looks like a light switch. Check it's on, then check the breaker.

Pressure Gauge

Most home boilers sit at 12–15 psi when cold. Much lower or higher means it's time for a technician.

Reset Once

Press the reset button one time. If the boiler locks out again, stop and call instead of resetting over and over.

Smell gas?

Leave the house right away and call Enbridge Gas from outside. Don't use light switches or your phone indoors.

Carbon monoxide alarm going off?

Get everyone outside, including pets, and call 911 from outside.

Still no heat? We offer 24/7 emergency boiler repair across Ottawa. In a cold snap, an unheated house can freeze pipes overnight.

(613) 801-5407

Boiler Repair in Ottawa

Searching for boiler repair near me? Most no-heat calls come down to one failed part. Our gas technicians test the system, show you what's wrong and get the heat back on, usually on the first visit.

Ignition & Gas Valve

Gas boiler repair for worn igniters, dirty flame sensors and faulty gas valves when the boiler won't fire or keeps locking out.

Circulator Pump

If the boiler runs but the radiators stay cold, the pump that moves hot water through the house may have failed.

Pressure & Expansion Tank

Pressure that keeps dropping or climbing usually points to a leak, a failed expansion tank or a worn relief valve.

Leaks & Error Codes

We read the fault code on modern boilers and trace leaks from fittings, valves or the heat exchanger.

Radiators & Hydronic Heating

Hydronic heating repair: we bleed trapped air, balance the system and fix zone valves so every room heats evenly, including in-floor heating.

Older Cast Iron Boilers

Many homes in the Glebe, Old Ottawa South and Sandy Hill still heat with an old hot water boiler. We keep them running and tell you honestly when replacement makes more sense.

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Annual Boiler Service in Ottawa

Looking for boiler service near me? A yearly boiler tune-up, ideally in early fall, catches worn parts before the first cold snap and keeps the system running safely. Many manufacturers also require annual boiler maintenance to keep the warranty valid.

Ontario requires a working carbon monoxide alarm near sleeping areas in homes with a fuel-burning appliance, so every service includes a combustion and venting check.

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What's Included

✓ Burner and heat exchanger inspected and cleaned
✓ Igniter and flame sensor tested
✓ Combustion and carbon monoxide check
✓ Venting inspected for blockages, leaks and ice at the outside vent
✓ Pressure, expansion tank and relief valve checked
✓ Circulator pump and controls tested
✓ Condensate trap cleaned on high-efficiency models

Boiler Replacement in Ottawa & Boiler Installation in Ottawa

If your boiler is 15 to 20 years old, an old cast iron unit or breaking down every winter, a new boiler installation usually costs less over time than repeated repairs. Before any boiler replacement, we do a heat loss calculation so the new unit is sized to your home, not just matched to the old one.

Combi Boiler Installation

✓ One unit for heat and on-demand hot water
✓ No separate hot water tank, so it frees up basement space
✓ Wall-mounted and compact

Best for: smaller homes with one or two bathrooms

Condensing Boiler Installation

✓ Recovers heat from the exhaust that older boilers send up the chimney
✓ Vents through the wall with PVC pipe
✓ Pairs with a separate hot water tank

Best for: larger homes and in-floor heating

Every install includes proper venting, a condensate drain where needed, a gas line check and removal of the old boiler. Keeping a separate tank? See our water heater services.

New condensing boiler installed in an Ottawa basement

Propane & Oil Boilers on Rural Properties

Outside the gas line, around Manotick and other rural areas of Ottawa, many homes heat with propane or oil. We service both.

Propane Boiler Repair

Regulator, burner and igniter faults, plus lockouts after the tank runs low. Your supplier must leak-test the system before it's refilled and relit.

Oil Boiler Repair

Clogged nozzles and filters, sludge in the oil line and soot build-up. On an oil boiler, don't press the reset more than once.

Oil to Propane Conversion

An aging oil boiler can be replaced with a high-efficiency propane boiler, or natural gas if a line reaches your property.

Boiler Repair Reviews from Ottawa Homeowners

"Our gas boiler stopped heating the house during a cold weekend. Topline checked the ignition system and found a faulty component. The technician explained what had failed, replaced the part, and made sure the radiators were heating before leaving. Really appreciated the quick response."

Nathaniel P. 2025-01-11

"The pressure on our boiler kept dropping, and I was having to top it up far too often. The plumber inspected the system and found a small leak near one of the fittings. He repaired the connection, checked the pressure again, and showed us what to monitor. No more constant refilling."

Bridget S. 2025-03-26

"We had an annoying humming sound coming from the boiler room, and the upstairs radiators were barely getting warm. Topline traced the issue to the circulation pump. They replaced it and tested the heating zones afterward. The difference was noticeable right away, especially upstairs."

Dylan H. 2025-06-04

"Booked a boiler maintenance visit before winter because our system hadn't been serviced in a while. The technician inspected the burner, checked the venting and safety controls, and went through the heating system carefully. He also pointed out a couple of things to keep an eye on. Very thorough service."

Sabrina O. 2025-11-19

"Our condensing boiler kept displaying an error and shutting down. I thought we were looking at an expensive replacement, but the Topline technician found a blockage in the condensate drain. He cleared it, checked the other connections, and ran the boiler through several cycles. Glad they diagnosed it properly first."

Howard J. 2026-02-10

"Our old boiler needed another costly repair, so we asked Topline about replacing it. They went over the options without pressuring us and helped choose a suitable high-efficiency model. The installation was tidy, the old unit was removed, and the technician explained the new controls. Everything has been working well."

Katherine L. 2026-09-29

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Need boiler installation near me? Our TSSA-certified gas technicians are available 24/7 for no-heat calls across Ottawa.

Ottawa gas technician ready for a boiler service call

Boiler FAQ

Why is my boiler not heating?+

The most common causes are a thermostat setting, a tripped breaker, low system pressure or an ignition fault. If those checks are fine and one reset doesn't help, the boiler needs a gas technician.

Why does my boiler keep losing pressure?+

Usually a small leak in the system, a failing expansion tank or a relief valve that keeps letting water out. Topping it up only hides the problem, so have the cause found before the boiler starts locking out.

Is a combi boiler a good fit for my Ottawa home?+

It's a good fit for smaller homes with one or two bathrooms that want to drop the separate water heater. Larger homes running several showers at once usually do better with a condensing boiler and a separate tank. We'll check your hot water demand before recommending either.

How often should a boiler be serviced?+

Once a year, ideally in early fall before the heating season. Many manufacturers require yearly service to keep the warranty valid.

Should I repair or replace my boiler?+

Repair makes sense for a single failed part on a boiler that isn't too old. Replacement is usually the better choice if the heat exchanger is cracked, it breaks down every winter or it's 15 to 20 years old. We'll give you an honest recommendation after diagnosing it.

Do you offer 24/7 emergency boiler repair in Ottawa?+

Yes. If your boiler stops heating, is leaking or keeps locking out, call any time, day or night. If you smell gas, leave the house and call Enbridge Gas from outside. If a CO alarm goes off, get everyone out and call 911.

Where can I get boiler repair near me in Ottawa?+

Yes. Our TSSA-certified gas technicians cover all of Ottawa, from the Glebe and Westboro to Kanata, Barrhaven, Orléans and Manotick. Call (613) 801-5407 to book.