Combi Boiler Installation
One wall-mounted unit for home heating and on-demand hot water. No separate water tank.
- Best for: homes and condos with one or two bathrooms
- Brands: Navien, Viessmann, Rinnai, NTI, IBC
Radiators cold, boiler locked out or losing pressure? SolidPlumb Drain & Plumbing North York repairs, services and installs gas boilers and hydronic heating systems, from 1960s cast iron units to modern combi and condensing boilers.
Boiler repair and installation for all major brands
A boiler that quits at minus 20 is an emergency. Pipes can freeze within hours in an unheated house. Here's what happens when you call us at night:
Carbon monoxide is the biggest boiler risk. Ontario law requires a working CO alarm outside every sleeping area in homes with a fuel-burning appliance. If an alarm goes off, or you smell gas, get everyone outside, then call 911 or Enbridge Gas at 1-866-763-5427.
Our boiler repair technicians carry common parts for the main brands, so most repairs are done in one visit.
Ignition failure, bad flame sensor, faulty gas valve or a control board error.
Air trapped in the system, a stuck zone valve or an unbalanced system.
Leaks, a failed expansion tank or a relief valve that keeps dripping.
Scale and sludge on the heat exchanger or poor circulation make the boiler rumble.
Navien, Viessmann and other modern boilers lock out to protect themselves. We find the real cause.
Boiler fires but heat never reaches the radiators. We repair or replace the pump.
Leaks from fittings, valves or the heat exchanger. We find the source before water damage spreads.
An oversized boiler or bad controls turns on and off constantly, wasting gas.
Many homes in Armour Heights, Lawrence Park, York Mills and Don Mills still heat with hot-water radiators fed by a decades-old cast iron boiler. These systems are durable, but they waste a lot of gas and parts are getting hard to find. We keep them running, or upgrade the boiler while keeping your radiators.
We'll give you an honest answer, not a sales pitch. Here's how we decide:
Looking for boiler installation near me or boiler replacement near me in North York? Every boiler installation starts with a heat-loss calculation, so the new boiler is sized to your home, not guessed from the old one. We handle the gas connection, venting, controls and the start-up, all by TSSA-licensed technicians.
One wall-mounted unit for home heating and on-demand hot water. No separate water tank.
Heating-only boiler that recovers heat from exhaust gases. Often paired with an indirect hot water tank.
Replacing an old atmospheric boiler with a similar unit where venting or piping limits the options.
Warranty: new boilers are covered by the manufacturer's warranty, and terms depend on the brand and model. Most manufacturers require professional installation and yearly maintenance to keep it valid, so keep your service records.
Book boiler maintenance in early fall, before the first cold night. A yearly service keeps the boiler safe and efficient and keeps the manufacturer's warranty valid. Searching for boiler service near me or boiler maintenance near me? Every visit includes:
Our boiler technicians cover all of North York, with 24/7 no-heat calls in winter. Older homes with radiators are most common in these areas:
York Mills
Armour Heights
Bayview Village"Our combi boiler stopped heating late in the evening and kept showing an ignition error. Called SolidPlumb for emergency boiler repair in North York. The technician checked the system, replaced a faulty flame sensor and tested everything before leaving. Heat and hot water were back that night. Really appreciated the help."
Alaric P.
2026-01-23"We had an old cast iron boiler in our Armour Heights house that needed repairs almost every winter. SolidPlumb explained our options for boiler replacement in North York and installed a new condensing unit. They kept the existing radiators and adjusted the system so the upstairs rooms finally heat evenly. Very happy with how it turned out."
Zofia M.
2026-03-12"The pressure on our boiler kept dropping every few days and I was constantly topping it up. Booked boiler repair in North York with SolidPlumb. They found an issue with the expansion tank and a leaking relief valve. Both were replaced, and the pressure has stayed steady since. Nice to get it fixed without replacing the whole boiler."
Dorian K.
2026-05-18Common causes are a thermostat problem, low system pressure, an ignition or flame sensor fault, a failed circulator pump or a lockout after a safety trip. Check the thermostat, power and pressure gauge first. If the boiler still won't heat, call a licensed technician.
Yes. We answer no-heat calls 24/7 across North York, including nights, weekends and holidays. If a CO alarm is sounding or you smell gas, leave the house and call 911 first.
Yes. In Ontario, only TSSA-licensed gas technicians may repair or install gas boilers. Our boiler work is done by technicians holding G2 or G1 gas licences.
Repair cost depends on the part and the boiler model. Replacement depends on the boiler type, size, venting and piping changes. We diagnose first and give you a fixed, written quote before any work starts.
Most modern boilers last about 10 to 15 years with yearly service. Older cast iron boilers often run longer but are far less efficient, and parts can be hard to find.
A combi boiler heats your home and makes hot water on demand in one unit. A condensing boiler is a high-efficiency heating boiler, often paired with a separate indirect hot water tank. Most combi boilers are also condensing.
Usually, yes. Cast iron radiators work well with modern condensing and combi boilers. We check the piping, add a magnetic filter to protect the new boiler and balance the radiators after installation.
Once a year, ideally in early fall before the heating season. Annual service keeps the boiler safe and efficient, and most manufacturers require it to keep the warranty valid.
New boilers are covered by the manufacturer's warranty. Terms depend on the brand and model, and usually require professional installation and yearly maintenance.
Yes. We provide boiler repair, service and installation across North York, including Armour Heights, Lawrence Park, York Mills, Don Mills, Bayview Village, Willowdale, Bathurst Manor and Lawrence Manor.
Tell us your boiler brand and what's happening, and we'll call you back to schedule.
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We cover the entire North York region and expanded GTA.