Williamson-Thermoflo GWC Series 2
High-efficiency cast-aluminum hot-water condensing boiler · ~$6,500–$9,100 installed · Up to 91% AFUE · 604-359-1081
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 installed quoteThe GWC Series 2 is a gas-fired hot-water condensing boiler reaching roughly 91% AFUE with direct venting. It pairs higher efficiency with a floor-standing design for homes upgrading from atmospheric chimney-vented units.
Efficiency
Up to 91% AFUE
Output
Approx. 130,000 BTU output (140 size)
Warranty
Up to 12 years
Type
Condensing
Features
- Gas-fired hot-water condensing design
- Direct-vent sealed combustion
- Roughly 91% AFUE efficiency
- Floor-standing installation
- Natural gas or propane operation
- Insulated heavy-gauge steel jacket
- Low water cut-off protection
- Factory tested before shipment
Best For
- Replacing chimney-vented atmospheric boilers
- Homes wanting condensing efficiency in a floor unit
- Hydronic baseboard and radiator systems
GWC Series 2 Models
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.
More on the Williamson-Thermoflo GWC Series 2
Get an exact Williamson-Thermoflo GWC Series 2 quote
604-359-1081 · We supply & install — approximate prices shown, call for your exact number.