Boiler Repair
Diagnose and repair ageing boilers, leaks and heating faults.
Fast, honest boiler service in Toronto for the boilers other companies give up on — older models, out-of-warranty units and combi boilers that stopped making hot water.
Experienced with ageing systems
Professional boiler service
Price explained before work
Help when heating can't wait
Our boiler service in Toronto covers everything from diagnosing older systems and fixing unexpected breakdowns to regular maintenance and new installations. Find the right service for your home's heating and hot water needs.
Diagnose and repair ageing boilers, leaks and heating faults.
24/7
Urgent assistance for boiler shutdowns and loss of heat.
Annual tune-ups, cleaning and safety checks.
New boiler installation tailored to your home's needs.
Tankless combi boilers for heating and on-demand hot water.
Understand whether your older boiler is worth repairing.
Most boilers we see are 10–15 years old. These are the common warning signs and what usually fails first. Select a symptom to see possible causes, safe checks and when to arrange service.
Boiler stops heating the home.
Ignition failure, circulation pump trouble or a faulty control component.
Check thermostat settings and whether the boiler displays an error code. Do not open the casing.
Heating works, but hot water does not.
A diverter valve, flow sensor or heat exchanger issue in the combi boiler.
Check the displayed operating mode and write down any fault code. Avoid adjusting internal components.
Pressure repeatedly drops.
Expansion tank deterioration, a leaking fitting or pressure-related component failure.
Read the external pressure gauge and note the reading when the boiler is cool. Do not repeatedly refill without diagnosing the cause.
Gauge rises beyond its normal range.
A faulty expansion tank, filling valve or pressure control issue.
Record the gauge reading and any warning message. If the relief valve is discharging or pressure is rapidly rising, stop using the boiler and request urgent service.
Visible water around the boiler.
Corroded fittings, damaged seals, valve problems or internal component leakage.
Observe the leak from a safe distance. Do not touch electrical components or open the casing. Call promptly, especially if water is spreading.
Loud or unusual operating noises.
Scale buildup, circulation restrictions or component wear.
Note when the noise occurs and whether it changes during heating. If it is severe or accompanied by overheating, stop operating the boiler and call for urgent assistance.
Boiler cannot start normally.
Ignition electrode, flame sensor, gas valve or control fault.
Record any displayed error. Avoid repeated ignition attempts or touching gas controls. If you smell gas, leave the building immediately.
Warning or fault shown on screen.
Codes can indicate sensor problems, ignition failures or circulation issues, depending on the model.
Photograph the code and consult the user manual. Only a non-urgent informational warning may be suitable for routine booking; loss of heat or safety-related faults need prompt attention.
Boiler runs but heating stays weak.
Restricted circulation, heat exchanger deposits or a sensor or control problem.
Compare the thermostat setting with the displayed temperature. Note whether the issue affects the entire home.
Boiler starts and stops frequently.
Sensor faults, circulation restrictions, control settings or an incorrectly sized boiler.
Observe how frequently the boiler starts and stops, and note thermostat settings without opening the unit.
Winter shutdown or condensate fault.
A condensate discharge pipe may freeze during prolonged Toronto cold spells, causing the boiler to stop operating.
Note the fault code and look for visible ice around the accessible external condensate outlet. Do not use boiling water, a flame or electrical heating equipment on the pipe.
Potential immediate safety hazard.
Leave the building immediately and keep others out. Do not operate electrical switches, phones or equipment inside.
Call 911 and the gas emergency provider. Do not re-enter until emergency responders say it is safe. A routine boiler booking is not the first step.
Having a few details ready helps the technician understand your boiler and prepare for the visit.
Boiler repair in Toronto for heating-and-hot-water boilers that are past their manufacturer's warranty. 10, 15, 20 years old — we diagnose it, explain it, fix it.
We diagnose the fault first, then repair what can be repaired and replace worn parts with compatible components — including parts for older and discontinued models when available.
Boiler still under manufacturer warranty? Contact the manufacturer's authorized service first — outside repairs can affect your coverage. Once the warranty is over, we're here.
Check the details below to see whether your boiler matches the equipment we service.
Tell us what's happening with your boiler.
On-site assessment and price before work starts.
Work begins after approval, often on the first visit.
Searching for boiler repair near me?
Call — a technician can usually be there today.
An older boiler doesn't always need replacing. Its age, repair history and available parts can help determine whether another repair makes sense or whether it's time to consider a new installation.
Adjust the age and select any warning signs you've noticed.
A boiler in this age range may still be repairable. Its service history, condition and replacement parts will help determine whether repairing it remains practical.
Compare Boiler Installation OptionsBased on 12 years of age and 0 selected warning signs. This is general guidance, not a diagnosis.
If your boiler is still covered by the manufacturer's warranty, contact their authorized service first, regardless of the boiler's age.
Compare an ageing boiler with a newer installation. The right decision depends on the unit's condition and repair requirements.
Searching for boiler replacement near me? Compare repairing your existing boiler with a new installation after an on-site assessment.
We help Toronto homeowners select and install residential boilers suited to their home's heating requirements, existing radiators or in-floor heating connections and hot water demand. From removing an older unit to gas connections, venting, testing and start-up, every stage is planned around the property.
A new boiler needs to match your home, not simply replace the old model with a similar-looking unit. We assess heat demand, available space, gas supply, venting and how your household uses hot water.
Heat-loss assessment and boiler sizing.
Bathrooms, fixtures and household usage.
Radiator or in-floor heating connections.
Proper connections and exhaust routing.
Your new boiler comes with the manufacturer’s warranty — we register it for you.
From the first home assessment through final testing and system handover, each step prepares your new boiler for operation.
Review heating needs and complete a heat-loss check.
Discuss two or three suitable boiler options and pricing.
Disconnect and remove the existing boiler.
Mount the new boiler and complete gas and venting connections.
Pressure test, combustion analysis and start-up checks.
Explain controls and complete manufacturer warranty registration.
Planning a New Boiler Installation?
Looking for boiler installation near me? Arrange an assessment to discuss boiler sizing, installation requirements and available options.
Our Toronto boiler technicians work with gas, electric and combi boilers. Whether your older system needs a repair, routine maintenance or replacement, we assess the equipment and recommend the appropriate service.
Gas boilers operate under demanding conditions throughout Toronto winters. As internal parts age, homeowners may experience ignition failures, pressure fluctuations, circulation problems or interruptions in heating.
Our technicians diagnose gas boiler faults, inspect worn components and complete repairs or maintenance based on the condition of the equipment.
Ignition repairs · Low or high boiler pressure · Gas valve faults · Circulator pumps · Boiler maintenance · New installations
Electric boilers rely on electrical heating elements, controls and wiring to maintain the required temperature. Problems with these components can lead to poor heating performance, unexpected shutdowns or inconsistent operation.
Our team handles electric boiler diagnostics, component replacement and maintenance. Electrical connections and internal repairs are assessed by qualified technicians, so homeowners do not need to handle potentially hazardous equipment themselves.
Heating element faults · Temperature controls · Electrical connections · Boiler shutdowns · Component replacement · New installations
Combi boilers provide both home heating and on-demand hot water from one compact unit. When internal components begin to fail, the system may lose hot water, show error codes or struggle to maintain heating temperatures.
We diagnose and repair combi boiler faults, replace worn components and carry out cleaning and maintenance to restore reliable operation. We also install new wall-mounted combi boilers suited to the home's heating and hot water requirements.
No hot water · Diverter valve problems · Heat exchanger cleaning · Pressure faults · Error codes · Combi boiler installation
Our boiler repair Toronto technicians work with residential boilers from established manufacturers. Select a brand to explore common issues we can diagnose and repair.
Common Issues on Older Navien Boilers We Fix
Common Issues on Older NTI Boilers We Fix
Common Issues on Older Viessmann Boilers We Fix
Common Issues on Older IBC Boilers We Fix
Common Issues on Older Rinnai Boilers We Fix
Common Issues on Older Lochinvar Boilers We Fix
Common Issues on Older Bosch Boilers We Fix
Common Issues on Older Weil-McLain Boilers We Fix
Common Issues on Older Triangle Tube Boilers We Fix
Common Issues on Older Laars Boilers We Fix
Don't see your brand? We service most residential boilers in Toronto.
Brand names and logos belong to their respective owners. We are an independent boiler service company, not an authorized dealer of these manufacturers.
Book Boiler ServiceSearching for boiler maintenance near me? Annual boiler service near me keeps an older gas boiler running safely through Toronto winters. Regular inspections, cleaning and performance testing help identify worn components and developing problems before they lead to unexpected breakdowns.
Move the slider to compare
AFTER
BEFORE
Cleaning can remove accumulated deposits from accessible heat exchanger surfaces. The procedure depends on the boiler model and its condition.
Routine boiler cleaning addresses buildup on the burner and heat exchanger, along with condensate traps and drain lines where applicable. Cleaning procedures are selected according to the manufacturer's service requirements.
A detailed service visit includes inspection, cleaning and operating checks appropriate to your boiler.
Best Time: Before the Heating Season
Arrange annual maintenance before the colder months when your boiler will be working harder.
The exact checks and cleaning procedures depend on the boiler type, model, condition and manufacturer service instructions.
When your boiler stops working during a Toronto winter, waiting isn't always an option. Our emergency boiler repair Toronto service is available 24/7 for unexpected shutdowns, loss of heat and urgent boiler leaks.
24/7 Emergency Boiler Repair
Toronto residential service
Leave the house immediately and keep everyone outside. Do not operate electrical switches, appliances or phones while inside. Once safely outside, call 911 and the Enbridge Gas emergency line. Do not re-enter until emergency responders confirm it is safe.
For suspected gas or carbon monoxide emergencies, contact emergency services before arranging boiler repairs.
Older boilers deserve careful diagnosis, clear explanations and practical repair options. Here's what you can expect when our team visits your Toronto home.
Boiler inspections, gas connections and repairs are handled by qualified technicians familiar with residential gas equipment and applicable Ontario requirements.
We diagnose ageing systems and work with components from older or discontinued boiler models, checking parts availability before recommending repair or replacement.
The technician assesses your boiler on site, explains the required work and provides the price before proceeding. Repairs begin only after your approval.
Our service vehicles carry commonly used diagnostic tools and replacement parts, helping technicians complete many boiler repairs during the first visit.
Technicians use practical protective measures such as shoe covers and drop cloths, keeping the work area organized and treating your property with care.
We document relevant findings with photographs and explain what went wrong in plain English, so you understand your boiler's condition and the work performed.
Tell us what is happening and arrange a technician visit.
From ageing boiler repairs and component replacements to new installations and unexpected breakdowns, see the different types of service experiences shared by homeowners across Toronto.
Our older boiler kept losing pressure overnight. The technician checked the system and found the expansion tank was the problem. He explained what needed replacing before starting, and the pressure has been stable since.
Daniel Mitchell
Leslieville · September 18, 2026
We replaced the boiler in our older house after comparing a few options. The team removed the old unit, installed the new one and left the pipework looking tidy. They also walked us through the controls before leaving.
Sarah Kim
Leaside · August 27, 2026
The boiler stopped heating the house late on a cold evening. We called the emergency line and a technician came out to investigate. The ignition fault was identified and repaired, and the heating was working again that night.
Michael Robertson
North York · February 11, 2026
Our combi boiler was heating the radiators but barely producing hot water. The technician traced it to the diverter valve and replaced the faulty part. We appreciated that he tested both functions before finishing.
Amanda Patel
The Annex · July 9, 2026
We were hearing a grinding noise from the boiler every time the heat came on. It turned out the circulator pump was wearing out. The technician showed us the issue and replaced the pump without pushing us toward a whole new boiler.
Jonathan Clarke
Etobicoke · May 22, 2026
Our previous boiler was taking up too much room in the utility area. The replacement was carefully positioned on the wall, and the gas and vent connections were neatly arranged. The installer explained how to monitor the boiler's pressure.
Emily Lawson
High Park · April 16, 2026
We noticed water dripping underneath the boiler on a Sunday morning. After calling, we arranged an urgent visit. The technician located a leaking connection, replaced the damaged fitting and checked for further leaks.
Rebecca Bennett
Riverdale · March 8, 2026
An error code kept appearing on our combi boiler and the water temperature would fluctuate. The technician checked the controls and identified a faulty temperature sensor. The repair was explained clearly and the boiler was tested afterward.
Thomas Nguyen
Scarborough · June 30, 2026
Tell us about the problem and arrange a technician visit.
Answers to common questions about boiler repair, installation, maintenance and older residential boilers in Toronto.
Boiler repair costs depend on the fault, the boiler's age, the required replacement parts and the amount of work involved. Problems with sensors or controls may require different repairs than issues with a circulator pump, gas valve or heat exchanger.
Our technician diagnoses the problem on site, explains the necessary work and provides the price before starting. Repairs proceed only after you approve the cost.
Yes. Our 24/7 emergency boiler repair service handles urgent residential boiler problems in Toronto, including a complete loss of heating, unexpected shutdowns and serious leaks.
If you need emergency boiler repair near me, call (647) 956-9301 directly. Same-day visits may be available depending on your location and technician availability.
If your boiler is relatively new or still covered by the manufacturer's warranty, contact the manufacturer's authorized service provider first. Repairs performed outside its authorized service network can affect the remaining coverage.
Our primary focus is repairing older residential boilers after their manufacturer coverage has expired.
Rental boilers are generally serviced through the company that owns or provides the equipment. If your boiler is rented, contact that company to arrange the appropriate service.
We specialize in homeowner-owned residential boilers, particularly older systems that need diagnosis, repairs or maintenance.
Many older boilers can still be repaired, depending on their condition, the nature of the fault and whether compatible replacement parts are available. Age alone does not mean a boiler must be replaced.
Our boiler repair in Toronto focuses on ageing equipment, including units that are 15 or 20 years old. The technician assesses the components and explains whether repair remains practical.
Many residential boilers operate for approximately 15–20 years, although actual service life varies with the model, installation quality, water conditions, usage and maintenance history.
A regularly maintained boiler may remain serviceable beyond its expected lifespan, while another unit may develop significant problems sooner. Its actual condition is more useful than age alone.
Consider the boiler's age, recent repair history, efficiency, current fault and availability of replacement parts. A relatively minor repair may still make sense on an older unit, while recurring expensive faults can make replacement worth comparing.
For boilers around 10–15 years old, our technician can assess whether repairing the existing unit is reasonable or whether it is time to plan for a new installation. You can also explore our Repair or Replace comparison.
Installation time depends on the boiler type, the condition of existing connections, required venting changes and whether the old unit needs to be removed. A straightforward replacement generally requires less work than a major change to the heating arrangement.
Every boiler installation Toronto homeowners book with us starts with a site visit: the technician reviews the property and explains the expected scope of work and schedule.
New boilers come with a manufacturer's warranty on the equipment. The duration and covered components depend on the brand and model you choose.
During installation, we explain the manufacturer's documentation and help register the new boiler as required.
A combi boiler can be a practical option for a Toronto home: it's a tankless, wall-hung unit that combines space heating and on-demand hot water, with no separate storage tank.
Suitability depends on the size of the house, the number of bathrooms and simultaneous hot water demand. For larger households, the technician may recommend comparing different boiler capacities or system configurations. We handle combi boiler installation Toronto-wide and size each unit to the home — see Combi Boilers.
Annual maintenance is generally recommended for residential boilers, subject to the manufacturer's service instructions. Scheduling service before the heating season can help identify developing faults.
Boiler maintenance in Toronto may include combustion testing, pressure checks, inspection of safety components and cleaning the burner, heat exchanger or condensate components where appropriate. See our Boiler Maintenance & Cleaning section.
Common warning signs include no heat or no hot water, pressure that keeps dropping, water around the boiler, banging or kettling noises, frequent on-off cycling and error codes on the display. On older boilers these usually point to a worn part such as a pump, expansion tank, sensor or valve.
If you smell gas or a carbon monoxide alarm goes off, leave the house and call 911 first. For everything else, see Common Boiler Problems or call (647) 956-9301 to book boiler repair.
Repeated pressure loss can result from a leaking connection, an expansion tank problem, a pressure relief valve fault or another issue within the boiler and connected heating system.
Note the pressure displayed on the gauge when the unit is cool and whether it changes during operation. Avoid repeatedly adding water without identifying the cause. A technician can inspect the boiler and determine the appropriate repair.
We repair and install boilers that supply heated water to radiators or hydronic in-floor heating systems. Our work focuses on the boiler itself, including its operating components and controls.
Repairs to individual radiators, embedded floor piping or the distribution circuits are outside our boiler service scope.
Our residential boiler services cover Toronto neighbourhoods across Downtown and Central Toronto, Midtown, the East End, West End, East York, York, North York, Etobicoke and Scarborough.
Visit our Toronto Service Areas section to check the neighbourhoods we cover, or call (647) 956-9301 to confirm service availability for your address.
Tell us about your boiler and arrange a service visit for an on-site assessment.
TORONTO BOILER SERVICES
Need help with an older boiler, a loss of heat or hot water, or a new installation? Send us your contact details and we'll get in touch to discuss your boiler and arrange a service visit.
Residential Boiler Specialists
Repair · Maintenance · Installation
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Need urgent boiler assistance? (647) 956-9301
Boiler service Toronto-wide: residential boiler repair, maintenance and installation from Etobicoke to Scarborough. Explore the neighbourhoods we serve.
Select an area to see the neighbourhoods covered.
Not sure whether your address is within our service area? (647) 956-9301 to check availability in your neighbourhood.