Boiler Replacement · Toronto & GTA

Boiler Replacement Toronto & GTA

Replacing an old, leaking, or inefficient boiler across Toronto and the GTA. We remove your old unit and install a modern high-efficiency combi or condensing boiler — TSSA-registered, with required approvals coordinated, with honest sizing.

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Boiler Replacement

What We Replace & Upgrade

Whether your boiler quit, sprang a leak, or just costs too much to run, we get reliable heat back fast — with the right unit for your home.

Old-to-High-Efficiency Conversions

We replace aging cast-iron and atmospheric boilers with modern condensing units that vent through PVC and recover heat older boilers waste — lower bills and steadier heat.

Combi Upgrades

Replace a separate boiler and hot-water tank with one wall-mounted combi. Frees up floor space and gives you on-demand hot water alongside your home heating.

Same-Week Replacement

We carry popular Navien and Rinnai units in stock and can usually replace a failed boiler within the week — sooner in a no-heat emergency.

Warning Signs

Signs It's Time to Replace Your Boiler

Catch these before a mid-winter failure and you can plan the job on your terms.

  • Boiler is 15–20+ years old and needs repairs every season
  • Water leaking from the boiler or pooling near the base
  • Banging or “kettling” sounds from scale in the heat exchanger
  • Constant pressure loss or frequent need to re-fill the system
  • Rust and corrosion on the casing or near-boiler piping
  • Rising gas bills and rooms that never quite warm up
Transparent Pricing

Boiler Replacement Costs

Fixed written quotes including old-unit removal, applicable permits and inspections.

SystemPrice Range (Installed)
High-efficiency combi boiler$6,000 – $11,000
Condensing system boiler$7,000 – $13,000
Conventional boiler like-for-like swap$5,500 – $9,500
Old unit removal & disposalIncluded
Written quote before any work begins. Old boiler removal and disposal included. All gas work TSSA-registered and with required approvals coordinated.

Free Replacement Quote

We assess your old system in person, size the new unit properly, and give you a fixed written price — no pressure.

416-316-1616
TSSA-Registered · with required approvals coordinated · All Major Brands
Our Process

How a Boiler Replacement Goes

A clean, code-compliant install — the kind of work you'll see in our before-and-after photos.

1. Assess & Size

We inspect your system, run the heat-loss and hot-water numbers, and recommend the right boiler type and size — never just the biggest sale.

2. Remove & Re-pipe

We safely disconnect and remove the old unit, then rebuild the near-boiler piping, venting, and controls to code on a clean board.

3. Commission & Inspect

We fill, purge, and commission the system, verify combustion, and arrange the required safety inspection — then walk you through the new controls.

FAQ

Boiler Replacement Questions

Boiler replacement in the GTA typically runs $5,500–$13,000 installed, depending on the type of boiler and the condition of your existing piping and venting. A like-for-like high-efficiency swap is at the lower end; converting from an old atmospheric system to a modern condensing combi, with new near-boiler piping and PVC venting, sits higher. Your quote includes removal and disposal of the old unit, the new boiler, applicable permits and inspections.
If your boiler is under 12 years old and the repair is minor, repair usually wins. Replace when it's 15+ years old, leaking, badly corroded, kettling from scale, or needs a repair worth more than about half a new unit. Old atmospheric boilers also waste a lot of gas, so replacing one with a 95%+ condensing model often pays back part of the cost in lower bills. We give you an honest repair-vs-replace assessment, not a default upsell.
Yes, and it's one of the most popular upgrades we do. A combi boiler replaces both your old boiler and your separate hot-water tank with a single wall-mounted unit, freeing up floor space and improving efficiency. We confirm your home's hot-water demand and heating layout are a good match before recommending it, and handle the gas, water, and venting changes the conversion needs.
Most boiler replacements take one day. A straightforward swap can be done in well under a day; conversions that need new near-boiler piping, venting, or electrical run one to two days. We schedule winter replacements carefully so you're not left without heat overnight, and we tell you the exact timeline when we quote.
Permit and inspection requirements depend on the project scope and municipality. Gas work must be performed by properly certified technicians through a TSSA-registered contractor. We confirm and arrange any approvals required for your job.
Yes — our office is in Thornhill and we replace boilers across the whole GTA, including Toronto, North York, Scarborough, Richmond Hill, Markham, Vaughan, Mississauga, Aurora, and Newmarket. The area's older housing stock runs a lot of hot-water boiler and radiator systems, so boiler replacement is core work for us.

Time to Replace Your Boiler?

One call gets you an honest assessment and a fixed written quote. Old unit removed, with required approvals coordinated, all major brands.

Call 416-316-1616 Request a Quote Online