Williamson-Thermoflo Boiler Cost in Metro Vancouver (2026)
Real Williamson-Thermoflo install, repair, and maintenance pricing by series — plus the factors that move the price and the BC rebates that bring it down.
Williamson-Thermoflo (United States) — American-built cast-iron and condensing boilers. Below are the real starting prices for every Williamson-Thermofloseries we install and service in Greater Vancouver. Prices are transparent “from” figures; your fixed quote depends on the model and your home's existing system.
Installed from
$5,500
Residential range
$5,500–$6,500
Repair from
$189
Williamson-Thermoflo Pricing by Series
| Series | Type | Efficiency | Install from | Repair from | Maintenance from |
|---|---|---|---|---|---|
| FreeStyle Series 2 | combi | Up to 95% AFUE | $6,500 | $189 | $169 |
| GWC Series 2 | condensing | Up to 91% AFUE | $6,500 | $189 | $169 |
| GWA Series 3 | cast iron | Up to 84% AFUE | $5,500 | $189 | $169 |
“From” prices are starting points for a standard installation in Greater Vancouver and exclude rebates. Commercial series are quoted per project. Final pricing is confirmed in a free, fixed written quote.
What Affects Your Williamson-Thermoflo Price
Existing system & swap complexity
A straight like-for-like swap costs less than re-piping or converting from a tank or furnace system.
Venting changes
New condensing units need PVC/poly venting and a condensate drain — adding venting in a finished space raises labour.
Gas line & meter capacity
Higher-BTU models may need a larger gas line or meter upgrade from FortisBC.
Output & model tier
Larger-output and premium series cost more than entry models — sizing to your real heat loss avoids overpaying.
Removal & disposal
Removing and disposing of an old boiler (especially heavy cast-iron) adds labour.
Controls & zoning
Outdoor reset, smart thermostats, and added zones increase parts and commissioning time.
Permits
Gas and, where required, plumbing permits are included in a professional, code-compliant install.
Water treatment
In hard-water areas (Surrey, Langley) a system flush or treatment protects the heat exchanger and is cheap insurance.
Rebates in BC
High-efficiency condensing Williamson-Thermoflo models (95%+ AFUE) typically qualify for FortisBC and CleanBC rebates when installed by a licensed contractor. Programs and amounts change periodically — we identify the current rebates you qualify for and handle the paperwork.
Financing available
Flexible financing lets you spread the cost of a new Williamson-Thermofloboiler. Ask about current options when you call — we'll lay out the monthly figures alongside your fixed quote so there are no surprises.
About Williamson-Thermoflo
Williamson-Thermoflo manufactures gas-fired residential boilers in the United States, spanning traditional cast-iron water and steam units to modern wall-mounted stainless-steel condensing models. The lineup covers atmospheric cast-iron designs for chimney-vented homes as well as high-efficiency FreeStyle condensing boilers available in heat-only and combi configurations.
- Made in the USA with factory-tested assemblies
- Cast-iron sections backed by a limited 10-year section warranty
- FreeStyle condensing line reaches 95% AFUE
- Modulating combustion with up to 10-to-1 turndown on condensing models
- Both natural gas and propane firing available
- Heat-only and combi options for hot-water and combined DHW needs
Williamson-Thermoflo Cost FAQ
How much does a Williamson-Thermoflo boiler cost installed in Metro Vancouver?+
Williamson-Thermoflo boilers start around $5,500 installed and range up to roughly $6,500 for the higher-output residential series, before rebates. Commercial models are quoted individually. Your final price depends on the model, your existing system, venting, and gas-line work — we provide a fixed quote after a free site visit.
What does Williamson-Thermoflo boiler repair cost in BC?+
Most Williamson-Thermoflo repairs in Greater Vancouver start from the diagnostic fee plus parts and labour. A flat diagnostic fee applies to the service call and is credited toward the repair if you proceed. Common component repairs typically land between $200 and $600 depending on the part. We quote the repair before doing the work.
Are Williamson-Thermoflo boilers worth the price?+
Williamson-Thermoflo manufactures gas-fired residential boilers in the United States, spanning traditional cast-iron water and steam units to modern wall-mounted stainless-steel condensing models. The lineup covers atmospheric cast-iron designs for chimney-vented homes as well as high-efficiency FreeStyle condensing boilers available in heat-only and combi configurations.
Can I get a rebate on a Williamson-Thermoflo boiler in BC?+
High-efficiency condensing Williamson-Thermoflo models (95%+ AFUE) typically qualify for FortisBC / CleanBC rebates when installed by a licensed contractor. Rebate programs and amounts change periodically — we identify the current rebates you qualify for and help with the paperwork as part of your quote.
Do you offer financing on a new Williamson-Thermoflo boiler?+
Yes — flexible financing is available on new boiler installations so you can spread the cost. Ask about current financing options when you call 604-359-1081.
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Get a fixed Williamson-Thermoflo quote — free
Call 604-359-1081 for transparent pricing, current rebates, and financing options. No pressure, no surprises.