Williamson-Thermoflo GWA-233
Larger homes with high heat load · ~$5,500–$7,700 installed · 84% AFUE · 604-359-1081
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-233 quoteThe Williamson-Thermoflo GWA-233 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-233 Specifications
Heating output
233,000 BTU input BTU
Efficiency
84% AFUE
Warranty
Up to 12 years
Best suited to: Larger homes with high heat load.
What the Installed Price Includes
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-233 — installed in your city
More on the Williamson-Thermoflo GWA-233
Get an exact Williamson-Thermoflo GWA-233 installed quote
604-359-1081 · We supply & install — approximate price shown, call for your exact number.