The WGRGH series is Westinghouse\'s condensing gas tankless line — and the sleeper value play in the residential gas tankless market. 96% thermal efficiency at typically 30-40% lower price than equivalent Rinnai or Navien at the same flow rate.
The lineup
- WGRGH075 — 7.5 GPM, 140,000 BTU. 2-3 bathroom warm-climate
- WGRGH096 — 9.6 GPM, 180,000 BTU. Volume pick
- WGRGH011 — 11 GPM, 199,000 BTU. Largest; cold-climate or 3+ bathroom
Key features
- 96% thermal efficiency — condensing operation, latent heat recovery
- Stainless steel heat exchanger with 15-year warranty
- PVC venting — sidewall or concentric direct vent
- Modulating output — 10:1 turndown
- Optional Wi-Fi connectivity via add-on module
- Service shutoff valves for descaling included
Why WGRGH is a value play
| WGRGH096 | Rinnai RU199e | Navien NPE-210A2 | |
|---|---|---|---|
| Flow rate | 9.6 GPM | 9.0 GPM | 10.1 GPM |
| BTU input | 180,000 | 199,000 | 199,000 |
| Thermal efficiency | 96% | 95% | 95-97% |
| Heat exchanger warranty | 15 yr | 15 yr | 15 yr |
| Typical price | $1,249-1,549 | $1,599-1,899 | $1,499-1,799 |
Install requirements
- Wall-mount
- 2" or 3" PVC venting — sidewall or concentric direct vent
- ¾" gas line minimum on WGRGH075; ¾"-1" on larger models
- Condensate drain
- 120V outlet for blower and controls
- Inlet water filter (recommended)
- Water softener required at >7 gpg hardness (per warranty)
Sizing
| Climate | 1 bathroom | 2 bathroom | 3+ bathroom |
|---|---|---|---|
| Sun Belt | WGRGH075 | WGRGH075/096 | WGRGH096 |
| Mid-Atlantic | WGRGH075 | WGRGH096 | WGRGH011 |
| Upper Midwest | WGRGH096 | WGRGH011 | WGRGH011 / dual |
Warranty
- 15 years heat exchanger
- 5 years parts
- 1 year labor
- Annual descaling required for warranty (in any hard water)
Bottom line
WGRGH096 is the volume gas tankless pick. Competitive 15-year warranty at $300-400 less than equivalent Rinnai or Navien. Annual descaling is required for warranty. Water softener required at >7 gpg hardness.