Williamson-Thermoflo FS-80 (Heat-Only)
The Williamson-Thermoflo FS-80 (Heat-Only) is a 95% AFUE combi boiler with a 80,000 BTU input BTU output, part of the Williamson-Thermoflo FreeStyle Series 2 line. GasBoilers.ca installs, repairs, and maintains the FS-80 (Heat-Only) across Greater Vancouver — Red Seal–certified, TSBC-licensed, same-day repair available. Call 604-359-1081.
Williamson-Thermoflo FS-80 (Heat-Only) overview
The FreeStyle Series 2 is a wall-mounted gas-fired condensing boiler with a stainless-steel heat exchanger and modulating combustion rated at 95% AFUE. It is offered in heat-only and combination (combi) versions across three input sizes, with flexible PVC, CPVC, PP or stainless venting.
95% AFUE
Efficiency
80,000 BTU input
BTU Output
Up to 12 years
Warranty
FS-80 (Heat-Only) specifications
| Model | Williamson-Thermoflo FS-80 (Heat-Only) |
| Series | FreeStyle Series 2 |
| Type | combi |
| BTU Output | 80,000 BTU input |
| Efficiency | 95% AFUE |
| Warranty | Up to 12 years |
| Origin | United States |
| Best for | Smaller, well-insulated homes |
FreeStyle Series 2 features
Williamson-Thermoflo FS-80 (Heat-Only) services we provide
All work by licensed BC gas-fitters — TSBC-certified.
FS-80 (Heat-Only) Installation
Permit, sizing, venting, gas, commissioning.
From $6,500
FS-80 (Heat-Only) Repair
Error code diagnosis, parts, full repair.
From $189
FS-80 (Heat-Only) Maintenance
Annual tune-up — required for warranty.
From $169
FS-80 (Heat-Only) Replacement
Upgrade an older unit. Rebate-eligible.
From $6,500
Emergency Service
Same-day no-heat, leak, CO, gas-smell response.
Call 604-359-1081
Warranty Service
Authorized warranty repairs for Williamson-Thermoflo.
Warranty-covered
Williamson-Thermoflo FS-80 (Heat-Only) — frequently asked questions
How much does Williamson-Thermoflo FS-80 (Heat-Only) installation cost in Vancouver?
Williamson-Thermoflo FS-80 (Heat-Only) installation starts from $6,500 in Greater Vancouver, including permit, code-compliant venting and gas piping, removal of the old unit, and full commissioning. Final pricing depends on your existing system and a heat-loss calculation. Call 604-359-1081 for a free quote.
What size is the Williamson-Thermoflo FS-80 (Heat-Only)?
The Williamson-Thermoflo FS-80 (Heat-Only) has a heating output of 80,000 BTU input BTU, with 95% AFUE efficiency. It is best suited to smaller, well-insulated homes.
Do you repair the Williamson-Thermoflo FS-80 (Heat-Only)?
Yes. We diagnose and repair the Williamson-Thermoflo FS-80 (Heat-Only) — error codes, ignition faults, no-heat, leaks, low pressure, and sensor issues — from $189. Our technicians are factory-trained on Williamson-Thermoflo FreeStyle Series 2 units and carry common parts on the truck.
How often should the Williamson-Thermoflo FS-80 (Heat-Only) be serviced?
Williamson-Thermoflo recommends annual maintenance to keep the FS-80 (Heat-Only) efficient, safe, and within warranty (up to up to 12 years). Our maintenance service starts from $169.
Williamson-Thermoflo FS-80 (Heat-Only) service across Greater Vancouver
We service the FS-80 (Heat-Only) in every major Greater Vancouver city.
Other Williamson-Thermoflo FreeStyle Series 2 Models
Book Williamson-Thermoflo FS-80 (Heat-Only) service today
Same-day repair available · Free installation quotes · Licensed gas-fitters