Lennox GWB8-IH-125
The Lennox GWB8-IH-125 is a 95% AFUE condensing boiler with a 12,500 – 125,000 BTU output, part of the Lennox GWB8-IH Series line. GasBoilers.ca installs, repairs, and maintains the GWB8-IH-125 across Greater Vancouver — Red Seal–certified, TSBC-licensed, same-day repair available. Call 604-359-1081.
Lennox GWB8-IH-125 overview
The Lennox GWB8-IH delivers up to 95% AFUE in a compact, wall-mounted condensing package.
95% AFUE
Efficiency
12,500 – 125,000
BTU Output
Up to 10 years
Warranty
GWB8-IH-125 specifications
| Model | Lennox GWB8-IH-125 |
| Series | GWB8-IH Series |
| Type | condensing |
| BTU Output | 12,500 – 125,000 |
| Efficiency | 95% AFUE |
| Warranty | Up to 10 years |
| Origin | USA |
| Best for | Medium homes |
GWB8-IH Series features
Lennox GWB8-IH-125 services we provide
All work by licensed BC gas-fitters — TSBC-certified.
GWB8-IH-125 Installation
Permit, sizing, venting, gas, commissioning.
From $5,200
GWB8-IH-125 Repair
Error code diagnosis, parts, full repair.
From $189
GWB8-IH-125 Maintenance
Annual tune-up — required for warranty.
From $169
GWB8-IH-125 Replacement
Upgrade an older unit. Rebate-eligible.
From $5,200
Emergency Service
Same-day no-heat, leak, CO, gas-smell response.
Call 604-359-1081
Warranty Service
Authorized warranty repairs for Lennox.
Warranty-covered
Lennox GWB8-IH-125 — frequently asked questions
How much does Lennox GWB8-IH-125 installation cost in Vancouver?
Lennox GWB8-IH-125 installation starts from $5,200 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 Lennox GWB8-IH-125?
The Lennox GWB8-IH-125 has a heating output of 12,500 – 125,000 BTU, with 95% AFUE efficiency. It is best suited to medium homes.
Do you repair the Lennox GWB8-IH-125?
Yes. We diagnose and repair the Lennox GWB8-IH-125 — error codes, ignition faults, no-heat, leaks, low pressure, and sensor issues — from $189. Our technicians are factory-trained on Lennox GWB8-IH Series units and carry common parts on the truck.
How often should the Lennox GWB8-IH-125 be serviced?
Lennox recommends annual maintenance to keep the GWB8-IH-125 efficient, safe, and within warranty (up to up to 10 years). Our maintenance service starts from $169.
Lennox GWB8-IH-125 service across Greater Vancouver
We service the GWB8-IH-125 in every major Greater Vancouver city.
Other Lennox GWB8-IH Series Models
Book Lennox GWB8-IH-125 service today
Same-day repair available · Free installation quotes · Licensed gas-fitters