Williamson-Thermoflo GWA-100

Smaller homes · ~$5,500–$7,700 installed · 84% AFUE · 604-359-1081

$5,500–$7,700approximate installed price

From the Williamson-Thermoflo GWA Series 3 range. We supply & install — we do not sell equipment on its own. Every GasBoilers.ca price includes professional installation by Red Seal–certified BC gas-fitters, permit, and commissioning.

604-359-1081 — exact GWA-100 quote

The Williamson-Thermoflo GWA-100 is part of the GWA Series 3 — durable atmospheric cast-iron hot-water boiler. The GWA Series 3 is an atmospheric cast-iron gas hot-water boiler rated at 84% AFUE with a built-in air separator. Its rugged sectional design and chimney venting make it a dependable, budget-friendly choice for traditional hydronic systems.

GWA-100 Specifications

Heating output

100,000 BTU input BTU

Efficiency

84% AFUE

Warranty

Up to 12 years

Best suited to: Smaller homes.

What the Installed Price Includes

Supply of the boiler

Professional installation

Removal of the old unit

Code-compliant venting & gas connection

Municipal permit

System commissioning & workmanship warranty

Approximate installed price — every home is different. Final cost depends on your existing system, venting, gas line, and a heat-loss calculation. Call 604-359-1081 for an exact quote.

Other GWA Series 3 models

Williamson-Thermoflo GWA-166 Williamson-Thermoflo GWA-233

Williamson-Thermoflo GWA-100 — installed in your city

GWA-100 in VancouverSame-day, often within 2 hours GWA-100 in West VancouverSame-day available GWA-100 in North VancouverSame-day available GWA-100 in BurnabySame-day, often within 90 minutes GWA-100 in New WestminsterSame-day, often within 90 minutes GWA-100 in CoquitlamSame-day available GWA-100 in RichmondSame-day available GWA-100 in SurreySame-day available GWA-100 in LangleySame-day available GWA-100 in AbbotsfordSame-day available GWA-100 in ChilliwackNext-day available

More on the Williamson-Thermoflo GWA-100

GWA-100 Full SpecsTechnical detail & FAQ for the GWA-100 GWA Series 3 RangeAll GWA Series 3 models & pricing Boiler InstallationHow our installation service works Williamson-Thermoflo RepairService & repair for Williamson-Thermoflo Sizing GuideFind the right BTU for your home Financing & RebatesLower your net installed cost

Get an exact Williamson-Thermoflo GWA-100 installed quote

604-359-1081 · We supply & install — approximate price shown, call for your exact number.

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