# Boiler Repair Toronto | TSSA-Certified, $150 Diagnostic > Need boiler repair in Toronto? TSSA-certified techs fix combi, condensing & cast iron boilers. $150 diagnostic, installs from $5,000. Call 647-254-4113. URL: https://besthvactoronto.ca/boiler-installation-repair/ ![Best HVAC Toronto technician servicing a wall-mounted condensing combi boiler in a Toronto basement utility room](/images/hero/technician-in-plain-navy-uniform-servicing-a-wall-.webp) # Boiler Repair in Toronto & Condensing Boiler Installation Last updated: October 26, 2026 Best HVAC Toronto [/ →](/) has over 20+ years of Greater Toronto Area experience specialising in boiler installation & repair across Toronto and the wider GTA. Boiler installation, boiler repair, and hydronic radiant in-floor heating system service across Toronto and the GTA. Our TSSA-certified crew installs condensing combi-boilers, system boilers, and cast iron sectional boiler retrofits from Navien, Bosch, and Viessmann, with proper hydronic loop commissioning covering circulator pump sizing, expansion tank pressure, low-water cutoff (LWCO) safety installation, and outdoor reset control programming to modulate boiler output against outdoor temperature. Repairs cover pump failures, diverter valve faults on combi units, pressure loss diagnostics, kettling from limescale buildup on the primary heat exchanger, and inconsistent radiator temperature balancing across the loop. Every combi boiler installation includes DHW flow rate sizing against household hot water demand and PVC or polypropylene venting to CSA B149.1. As of 2026, boiler installation runs $5,000-$15,000 depending on type and capacity: combi boilers typically $6,000-$11,000 installed, condensing system boilers with indirect tanks and multiple zones $7,000-$13,000, and larger multi-zone or commercial boilers up to $15,000. Hydronic zone additions and radiator retrofits are quoted per project. Boiler repair starts with a $150 diagnostic, and most service calls run $250-$500. Repairs start at a $150 diagnostic. Annual maintenance is quoted per system. Same-day weekday capacity. 24/7 dispatch for gas emergencies and Enbridge Red Tags. - check\_circle TSSA G1/G2 certified - check\_circle 20+ years experience - check\_circle Manufacturer-Authorized Dealer call Call 647-254-4113 [tel:+16472544113 →](tel:+16472544113) View pricing [#pricing →](#pricing) payments **From $5,000**. installed, depending on type and capacity - star star star star star 4.9 (150+ reviews) - verified TSSA G1/G2 Certified & $2M Insured - bolt 2-Hour Emergency Response - workspace\_premium Manufacturer-Authorized Dealer Common problems ## Sound familiar? water\_drop ### System pressure keeps dropping A slow leak somewhere in the loop, a faulty expansion vessel, or a failing relief valve. We pressure-test the system to find the actual source before repairing. mode\_fan\_off ### Some radiators stay cold Usually trapped air or sludge buildup blocking flow. We bleed and balance the system so heat reaches every room, not just the ones closest to the boiler. hearing ### Boiler making kettling or banging noises A sign of limescale or sludge on the heat exchanger. Left alone it shortens the boiler's life. We flush and inspect before it becomes a full breakdown. Best HVAC Toronto is a TSSA-certified HVAC contractor in Toronto, Ontario, handling boiler repair and troubleshooting, condensing boiler installation, and annual boiler maintenance across the GTA. Every job is done by licensed technicians holding TSSA G1 or G2 gas tickets, backed by more than 20 years of combined Ontario HVAC experience, WSIB coverage, and $2 million in general liability insurance. No-heat emergencies get a typical 2-hour response, 24/7. Uneven radiators, a boiler that keeps losing pressure, and heating bills that climb every winter are the calls we take most, from Victorian semis in Leslieville and The Annex to post-war bungalows in East York and low-rise apartment buildings in Etobicoke. ## Hydronic heating done properly, from combi to cast iron The crew installs, repairs, and maintains residential and commercial boilers [/commercial-hvac/ →](/commercial-hvac/) , from modern wall-mounted condensing combi-boilers to traditional cast iron sectional units still serving original radiator loops in detached homes, semis, and triplexes. We service Viessmann, Navien, IBC, Weil-McLain, and Bosch boilers, and Best HVAC Toronto is a manufacturer-authorized Bosch dealer. Hydronic heating is a separate discipline from forced air, and every boiler we touch is commissioned by a gas technician, not a general handyman. Water temperature, flow rate, and control strategies determine whether your property feels comfortable. Our technicians calculate heat load, flow rate, and supply temperature before choosing equipment. A condensing unit dropped into an old high-temperature loop without an outdoor reset control will rarely save you money. We design the whole system to ensure you get the performance you paid for. ![Technician setting the outdoor reset curve on a condensing boiler control panel in a Toronto mechanical room](/images/content/technician-setting-the-outdoor-reset-curve-on-a-co.webp) Older neighborhoods in North York, Old Oakville, and central Oshawa still feature cast iron boilers operating at roughly 60 to 70 percent efficiency. Meanwhile, newer condo conversions and custom builds rely on high-efficiency cascade systems. Annual boiler maintenance before the heating season, covering combustion analysis, condensate trap cleaning, expansion tank charge, and low-water cutoff testing, keeps these modern units running and catches most failures before the first cold snap. ### Old vs. New Boiler Efficiency | Boiler Type | Typical Efficiency | Best Application | | --- | --- | --- | | Cast Iron Sectional | 60% - 70% | Older radiator loops operating at high temperatures. | | Modern Condensing | Up to 95% | In-floor radiant heating and low-temp systems. | ### What is included in a boiler installation You need to know exactly what happens during a full replacement. Our standard installation process covers every technical detail to protect your investment. Every comprehensive upgrade includes: - Accurate heat load calculation and custom zoning design. - Safe removal and disposal of the old heating unit. - A new boiler equipped with correctly sized circulator pumps and an expansion tank. - Near-boiler piping completed to exact manufacturer specifications. - Low-water cutoffs, safety controls, and proper condensate management. - Full air purging, zone balancing, and configuration of the outdoor reset control. ## Boiler repair in Toronto: the faults we fix most Most boiler repair calls in Toronto come down to five faults. Diagnosis starts at $150, is credited to the repair, and most service calls run $250 to $500. ### System pressure keeps dropping Water is escaping somewhere in the piping, or the expansion tank has failed. The usual culprits include a weeping relief valve, a leaking circulator seal, or a waterlogged tank. Our technicians pressure-test the loop to find the exact source of the leak before repairing it. Repeatedly topping up the pressure introduces fresh oxygenated water, which quickly corrodes your pipes from the inside out. ### Some radiators stay cold Cold spots at the top of a radiator almost always indicate trapped air. A completely cold radiator while others heat up points to a broken zone valve or a flow restriction. We bleed the lines, replace faulty circulators, and balance the loop to restore even heating across your home. Sludge buildup also causes major blockages over time if left untreated. ### Boiler short-cycles Short-cycling means the unit fires up for a minute and shuts off repeatedly. This normally happens when an oversized boiler cannot match the current heat load. Our technicians fix it by tuning the control strategy, adding outdoor reset, or downsizing at replacement. Frequent cycling wears out ignition components prematurely and wastes expensive natural gas. ### Kettling noises Banging or rumbling sounds from the heat exchanger usually indicate local hot spots caused by mineral scale. Toronto’s Lake Ontario municipal water is moderately hard, at roughly 120 to 130 mg/L, so scale builds up steadily inside heat exchangers. We perform chemical flushes to remove this mineral buildup and quiet the system down. Installing a magnetic filter prevents this annoying problem from coming back. ### No hot water from a combi A lack of hot water usually points to a failing diverter valve or a heavily scaled plate heat exchanger. Both of these components are entirely repairable, and where a combi cannot keep up with demand a dedicated tankless water heater [/tankless-water-heater-installation/ →](/tankless-water-heater-installation/) is often the better answer. Our preventative maintenance plans include an annual descale to fight off Toronto’s hard water. Skipping this yearly service almost guarantees a clogged heat exchanger down the road. ## What does a new boiler cost in the GTA? When repairs keep stacking up, boiler replacement becomes the better spend. In 2026, boiler installation in the GTA runs $5,000 to $15,000 depending on type, capacity, and complexity. Our detailed quotes break down every single factor so you know exactly what you are paying for. The type and output of the equipment always dictate the baseline price. A compact wall-hung condensing combi for a semi-detached home is generally the most affordable route. These combi units usually run between $6,000 and $11,000 fully installed. Best HVAC Toronto also installs high-output system boilers with indirect tanks for larger properties, which sit at the higher end of the pricing scale. Near-boiler piping is the second major cost factor, as modern units require specific primary and secondary arrangements. Third, adding zone valves or individual thermostats improves comfort but increases material and labour costs. Venting requirements also play a huge role in the final bill. We must install sealed PVC or polypropylene venting for condensing units instead of using an old masonry chimney. This change sometimes strands an existing gas water heater [/tank-water-heater-installation/ →](/tank-water-heater-installation/) on an oversized flue, requiring a new custom liner. Left uncorrected, poor draft is one of the faults that most often triggers an Enbridge red tag [/enbridge-red-tag-compliance/ →](/enbridge-red-tag-compliance/) . ### 2026 Boiler Price Estimates | Installation Type | Estimated Cost (GTA) | Best For | | --- | --- | --- | | Conventional Swap | $5,500 - $9,500 | Direct replacements of standard older units. | | High-Efficiency Combi | $6,000 - $11,000 | Smaller homes needing heating and hot water. | | Condensing System Boiler | $7,000 - $13,000 | Larger homes with high hot water demand. | Finally, the condition of your existing distribution pipes affects the required prep work. Old cast iron systems benefit massively from a power flush before the new heat exchanger is connected. Our estimators assess all these details during a free on-site visit and provide one clear, written price, with financing available on approved credit. Rebate programs such as the Home Renovation Savings Program change by equipment type, so we confirm eligibility for your specific boiler in writing rather than assuming a rebate applies. Are you ready to upgrade your mechanical room and enjoy reliable heat all winter? Do not wait until a total breakdown leaves you in the freezing cold. Every installation carries a 2-year labour warranty plus 5 to 10 years of manufacturer coverage, registered on your behalf. Call 647-254-4113 to book boiler repair or a free, itemized installation quote. ## Warning signs your boiler needs same-day service Boilers fail in slower, more predictable ways than furnaces because there is less moving equipment. The most common issues we see: no heat or no hot water despite the boiler firing, usually a pump failure or a stuck diverter valve on a combi boiler; loss of system pressure below about 12 psi (roughly 1 bar), indicating a leak somewhere in the loop, often at a rad valve, a pump gasket, or the pressure relief valve itself; kettling noises during operation, meaning limescale has built up inside the heat exchanger and is restricting flow; and inconsistent radiator temperatures across the home, usually air in the system, a stuck TRV, or an imbalanced circulator loop. Three warning signs demand same-day service. A carbon monoxide alarm going off, a yellow or lazy burner flame, or soot around the boiler means you should leave the house and call 911 and Enbridge Gas, then book a combustion check before the boiler runs again. Any visible water on or under the boiler, or under a radiator or PEX joint, needs to be diagnosed before it stains through the ceiling. Any pressure relief valve that has actuated (spurted water out the discharge tube) means the expansion tank or the pressure regulator has failed and the system is at risk of overpressuring. Both are diagnosable inside 30 minutes and correctable the same visit for most homes. Older cast iron sectional boilers give more advance warning: rust streaks under the pump, weeping at flange gaskets, and rising fuel bills over consecutive winters all point to a boiler approaching end of life. ## Combi, system, or conventional: which fits your home? Combi (combination) boilers heat the home and provide domestic hot water on demand from a single unit, with no storage tank required. Cold water enters, flows through the primary heat exchanger, and comes out hot to the tap in seconds. Conventional (heat-only) boilers heat the home only and require a separate hot water tank, which is typically a storage cylinder heated by an indirect coil from the boiler. System boilers sit between the two, with the pump and expansion vessel integrated into the unit but still requiring an external hot water cylinder. Combi boilers make sense for smaller homes with one to two bathrooms and lower simultaneous hot water demand, since the flow rate at the tap is limited by the boiler’s DHW output (typically 12-16 litres per minute for high-end residential combis). They save space (no tank), lower standby heat loss (no tank losing heat 24/7), and typically cost less to install. Conventional and system boilers make sense for larger homes with three or more bathrooms where simultaneous hot water demand at multiple taps exceeds combi capacity, or where high-flow fixtures like rainfall showers require sustained flow rates a combi cannot maintain. For most Toronto detached homes under 2,500 square feet with two bathrooms, a modern condensing combi is the right choice. Above 2,500 square feet or three-plus bathrooms, a system boiler with a properly-sized hot water cylinder usually wins. ## Hydronic vs forced-air heating for older Toronto homes Boilers and furnaces solve the same problem (heating the home) with fundamentally different distribution: boilers move hot water through radiators or radiant tubing, furnaces move warm air through ducts. The choice usually depends on what your home already has. Converting from hydronic to forced-air (or vice versa) is a major renovation involving removing radiators or ducts, installing the opposite distribution, and refinishing walls or ceilings; it typically only makes sense during a substantial reno anyway. Comfort characteristics differ meaningfully. Hydronic heat delivers even radiant warmth from radiators or in-floor tubing with no air movement, quiet operation, and no drying effect. It works especially well for older Toronto homes with cast iron radiators that provide gentle background heat throughout the day. Forced-air furnaces deliver quick warm-up times, integrate with central air conditioning and humidification, allow zoning through dampers, and pair naturally with HRV/ERV ventilation systems. On operating cost, a properly-sized condensing boiler and a properly-sized condensing furnace are within a few percent of each other at Enbridge’s current gas rates. The bigger operating cost difference comes from distribution: a well-insulated hydronic system loses less heat in transit than an air system with leaky ducts, but the reverse is often true if the hydronic system is old and uninsulated. For a new Toronto build without existing distribution, forced-air with heat pump-ready ductwork is the more flexible choice; for a heritage Toronto home with functional radiators, keeping and modernising the hydronic system is often the smarter call. Transparent pricing ## How much does boilers cost in Toronto? Repairs start at a $150 diagnostic. Annual maintenance is quoted per system. receipt\_long Written quote before any work begins. No hidden fees. ### Boiler service & repair Diagnostic fee, applied to the repair Starting from $ 150 installed, depending on type and capacity - check Full system diagnosis - check Circulator, expansion tank, and control checks - check Combustion analysis and CO readings - check Annual maintenance available Get a quote [tel:+16472544113 →](tel:+16472544113) MOST COMMON ### Condensing combi-boiler Heating plus domestic hot water Starting from $ 6,500 installed, depending on type and capacity - check Heat and hot water from one unit - check Frees up the water heater space - check Outdoor reset control - check Manufacturer registration filed on your behalf Get a quote [tel:+16472544113 →](tel:+16472544113) ### Hydronic system install Radiators or in-floor loops Starting from $ 12,000 installed, depending on type and capacity - check Full hydronic system design - check Zone valves or zone pumps - check Low-water cutoff and safety controls - check Commercial capacity available Get a quote [tel:+16472544113 →](tel:+16472544113) Prices are guide ranges for Toronto and the GTA. Final pricing depends on your equipment, access, and site conditions, and we confirm it in writing before starting. Request a free estimate [/contact/ →](/contact/) or call 647-254-4113 [tel:+16472544113 →](tel:+16472544113) . savings Financing available on approved credit, plus lease-to-own with zero down on qualifying installs. Why us ## Why choose Best HVAC Toronto for boilers? history ### We work on old systems properly Cast iron sectional boilers and original radiator loops in Old Oakville, central Oshawa, and Don Mills need someone who understands hydronics, not just forced air. apartment ### Residential and commercial The same crew handles a semi-detached radiator system and a multi-unit commercial boiler room, so capacity sizing and staging are handled correctly at both scales. tune ### Controls done right Outdoor reset, proper zoning, and correctly sized circulators are where hydronic comfort and efficiency actually come from. We commission them rather than leaving defaults. verified\_user ### TSSA certified gas work Boiler work is gas work. Every technician holds a G1 or G2 licence, and venting, gas piping, and combustion are verified and documented. ## How Best HVAC Toronto compares | Feature | Typical provider | Best HVAC Toronto | | --- | --- | --- | | System design | Swap for the same size | Heat load calculation and zoning design | | Controls setup | Factory defaults left in place | Outdoor reset curve tuned to your building | | Commissioning | Fire it and leave | Air purged per loop, combustion verified, zones balanced | | Warranty handling | Homeowner registers the equipment | Manufacturer registration filed by us | | Commercial capability | Residential only | Residential and commercial boiler rooms | How it works ## How does our boilers service work? 1. 1search ### Assess the system We check the boiler, circulator, expansion tank, low-water cutoff, and the distribution side, whether that is cast iron radiators, baseboard, or in-floor loops. 2. 2draw ### Diagnose or design For repairs we identify the actual fault. For replacements we calculate the heat load and design the piping, zoning, and controls before quoting. 3. 3description ### Written quote You get a fixed written price covering equipment, piping, venting, controls, and permits. Nothing starts until you have agreed to it. 4. 4verified ### Install and balance We install, purge air from every loop, set outdoor reset curves, verify combustion, and balance the system so every zone actually reaches temperature. ## Not sure what your boilers situation needs? Get a straight answer and a written price, with the numbers to back it up. No pressure, no scare tactics. call 647-254-4113 [tel:+16472544113 →](tel:+16472544113) Book Online [/contact/ →](/contact/) Our work ## Recent boilers projects Click any image to enlarge. Reviews ## What customers say about our boilers work starstarstarstarstar4.9 out of 5 from 150+ customer reviews star star star star star > Our 1968 side-split still had the original boiler feeding the radiators. They talked us through repair versus replacement honestly and got the new condensing unit in before the cold snap. JJonathan K.Don Mills, North York star star star star star > Original hydronic system and they knew exactly what they were dealing with. Replaced the boiler without tearing the place apart. GGraham L.Old Oakville star star star star star > Old boiler, older house. They were realistic about the options and did not push the most expensive one. RRosanne B.O'Neill, Oshawa FAQ ## Boilers questions, answered ### How much does boiler repair cost in Toronto? expand\_more Boiler repair in Toronto starts with a $150 diagnostic, which is applied to the repair if you go ahead. Most service calls, such as replacing a circulator pump, an expansion tank, a pressure relief valve, or an ignition component, run $250 to $500. You get a written price before any work begins, with no hidden fees. ### Do you offer 24/7 emergency boiler repair? expand\_more Yes. No-heat calls and gas emergencies are covered 24/7, with a typical response of about 2 hours across Toronto, North York, Etobicoke, Scarborough, and the rest of the GTA. Regular repairs are booked same day for most calls Monday to Saturday, 7 AM to 8 PM. If you are searching for boiler repair near me after hours, call 647-254-4113. ### How much does boiler installation cost in Toronto? expand\_more In 2026, boiler installation in Toronto runs $5,000 to $15,000 depending on type and capacity. A wall-mounted condensing combi-boiler for a typical semi sits near the lower end. A larger hydronic system with multiple zones, or a commercial boiler with staging controls, sits at the upper end. Piping modifications, venting, and controls all affect the final figure and are itemised in the written quote. ### What is a combi-boiler and should I get one? expand\_more A combi-boiler provides both space heating and domestic hot water from a single wall-mounted unit, removing the need for a separate tank. It suits homes with moderate hot water demand and frees up floor space, which matters in tight Toronto mechanical rooms. Households running two showers simultaneously may be better served by a system boiler with an indirect tank, and we size on your actual demand. ### How long does a boiler last? expand\_more A modern condensing boiler typically lasts 15 to 20 years. Older cast iron sectional boilers frequently run 30 to 50 years, which is why so many are still operating in Toronto, but at efficiencies around 60 to 70 percent compared with over 90 percent for a condensing unit. Age alone is not a reason to replace; poor efficiency, repeated failures, and safety findings are. ### Can I keep my existing radiators if I replace the boiler? expand\_more In almost all cases, yes. Cast iron radiators are durable and work well with modern condensing boilers, although the system usually benefits from a lower water temperature and an outdoor reset control to maximise condensing operation. We assess radiator capacity against the heat load before confirming this, since a very low temperature strategy needs enough radiator surface. ### Why is my boiler losing pressure? expand\_more A residential hydronic system normally holds about 12 to 15 psi cold. Pressure that keeps falling almost always means water is escaping or the expansion tank has failed. Common sources are a weeping relief valve, a leaking circulator seal, a small leak on a buried loop, or a waterlogged expansion tank. Repeatedly topping up the system introduces fresh oxygenated water, which accelerates internal corrosion, so it is worth diagnosing rather than living with. ### What causes cold radiators when the boiler is running? expand\_more Usually trapped air, a stuck zone valve, a failed circulator, or sludge accumulation restricting flow. Cold at the top and warm at the bottom of a radiator points to air. Cold across the whole radiator while others are hot points to a zone or flow problem. A system flush and proper air purging resolves most cases. ### Do you service commercial boilers? expand\_more Yes. We install and maintain commercial boilers for property managers, low-rise apartment buildings, condo boiler rooms, restaurants, and light industrial sites, including staged and cascade systems. Planned maintenance agreements with priority dispatch are available, which most commercial clients prefer over reactive calls. ### How often should a boiler be serviced? expand\_more Annually, before the heating season. Service covers the burner and heat exchanger, condensate trap on condensing units, expansion tank charge, relief valve, low-water cutoff, circulator operation, system pressure, venting, and a combustion analysis with CO readings. Condensing boilers in particular suffer if the condensate trap and heat exchanger are not cleaned yearly. ### What is outdoor reset and why does it matter? expand\_more An outdoor reset control varies the boiler water temperature based on the outdoor temperature, running cooler water on mild days and hotter water in a cold snap. Lower return water temperatures let a condensing boiler actually condense, which is where its high efficiency comes from. A condensing boiler installed without reset control frequently never achieves its rated efficiency. ### Can you install in-floor radiant heating? expand\_more Yes. We design and install hydronic in-floor radiant systems with correctly sized manifolds, PEX loop layouts, flow meters, and mixing controls. In-floor works particularly well in basements, additions, and bathroom renovations, and it can share a boiler with existing radiators through a properly designed mixing arrangement. ### Can any plumber fix a boiler? expand\_more Not entirely. In Ontario, work on a gas-fired boiler, including the burner, gas valve, venting, and combustion setup, must be done by a TSSA-licensed gas technician holding a G2 or G1 certificate. A plumber without a gas ticket can repair water-side piping, radiators, and valves, but not the gas and combustion side of the boiler. ### Is it cheaper to repair or replace a boiler? expand\_more Repair is usually cheaper when the boiler is under about 15 years old and the fault is a single part, since most repairs run $250 to $500 against $5,000 to $15,000 for a new boiler. Replacement starts to make sense when an old cast iron unit running at 60 to 70 percent efficiency needs repeated repairs, has a cracked section or heat exchanger, or fails a combustion safety check. ## Related services local\_fire\_departmentFurnace Installation & RepairHigh-efficiency furnace installs and same-day diagnostic repair across Toronto and the GTA. [/furnace-installation-repair/ →](/furnace-installation-repair/) water\_dropTankless Water Heater InstallationCondensing tankless water heaters sized to your household flow rate, installed and serviced. [/tankless-water-heater-installation/ →](/tankless-water-heater-installation/) apartmentCommercial HVACRTUs, restaurant and retail systems, warehouse HVAC, and planned maintenance agreements. [/commercial-hvac/ →](/commercial-hvac/) ![](/images/hero/hvac-technician-in-plain-grey-uniform-kneeling-bes.webp) 24/7 for gas emergencies, red tags, no-heat and no-AC ## Ready to book boilers? Boiler installation, boiler repair, and hydronic radiant in-floor heating system service across Toronto and the GTA. Our TSSA-certified crew installs condensing combi-boilers, system boilers, and cast iron sectional boiler retrofits from Navien, Bosch, and Viessmann, with proper hydronic loop commissioning covering circulator pump sizing, expansion tank pressure, low-water cutoff (LWCO) safety installation, and outdoor reset control programming to modulate boiler output against outdoor temperature. Repairs cover pump failures, diverter valve faults on combi units, pressure loss diagnostics, kettling from limescale buildup on the primary heat exchanger, and inconsistent radiator temperature balancing across the loop. Every combi boiler installation includes DHW flow rate sizing against household hot water demand and PVC or polypropylene venting to CSA B149.1. As of 2026, boiler installation runs $5,000-$15,000 depending on type and capacity: combi boilers typically $6,000-$11,000 installed, condensing system boilers with indirect tanks and multiple zones $7,000-$13,000, and larger multi-zone or commercial boilers up to $15,000. Hydronic zone additions and radiator retrofits are quoted per project. Boiler repair starts with a $150 diagnostic, and most service calls run $250-$500. Written quotes before work begins, and manufacturer parts coverage registered on your behalf. call Call 647-254-4113 [tel:+16472544113 →](tel:+16472544113) Get a Free Estimate [/contact/ →](/contact/) - check\_circle Manufacturer registration filed on your behalf - check\_circle Written quotes before work starts - check\_circle TSSA G1/G2 certified, WSIB covered Cities we serve ## Boiler Installation & Repair Across the GTA High-efficiency condensing combi boiler installation and hydronic system repair, including cast iron retrofit, PVC/polypropylene venting, and low-water cutoff diagnostics. ### Boiler Installation & Repair in North York City of Toronto [Boiler Installation & Repair in North York →](/boiler-installation-repair/north-york/) ### Boiler Installation & Repair in Etobicoke City of Toronto [Boiler Installation & Repair in Etobicoke →](/boiler-installation-repair/etobicoke/) ### Boiler Installation & Repair in Scarborough City of Toronto [Boiler Installation & Repair in Scarborough →](/boiler-installation-repair/scarborough/) ### Boiler Installation & Repair in Vaughan City of Vaughan [Boiler Installation & Repair in Vaughan →](/boiler-installation-repair/vaughan/) ### Boiler Installation & Repair in Markham City of Markham [Boiler Installation & Repair in Markham →](/boiler-installation-repair/markham/) ### Boiler Installation & Repair in Mississauga Peel Region [Boiler Installation & Repair in Mississauga →](/boiler-installation-repair/mississauga/) ### Boiler Installation & Repair in Brampton Peel Region [Boiler Installation & Repair in Brampton →](/boiler-installation-repair/brampton/) ### Boiler Installation & Repair in Richmond Hill City of Richmond Hill [Boiler Installation & Repair in Richmond Hill →](/boiler-installation-repair/richmond-hill/) ### Boiler Installation & Repair in East York City of Toronto [Boiler Installation & Repair in East York →](/boiler-installation-repair/east-york/) ### Boiler Installation & Repair in Oakville Halton Region [Boiler Installation & Repair in Oakville →](/boiler-installation-repair/oakville/) ### Boiler Installation & Repair in Burlington Halton Region [Boiler Installation & Repair in Burlington →](/boiler-installation-repair/burlington/) ### Boiler Installation & Repair in Ajax Town of Ajax [Boiler Installation & Repair in Ajax →](/boiler-installation-repair/ajax/)