What it delivers
The Westinghouse HW180A0G-NG 180,000 BTU Tankless Water Heater is a non-condensing gas tankless with a 180,000 BTU/h burner and a stated maximum flow of 7.9 GPM.
Worked out from its input, it delivers roughly 6.2 GPM when the water only has to rise 45°F, and 4.0 GPM at a 70°F winter rise: 3 showers at 2 GPM in summer, 1 shower at 2 GPM in winter. Check it against your own fixtures.
The line must deliver about 174 cubic feet of natural gas an hour when it fires flat out. The requirement calculator adds it up; a licensed fitter confirms the pipe.
Non-condensing indoor units run hot exhaust and vent in the maker's listed vent system (often stainless Category III), which costs more than plastic.
Other listed details: connections: 3/4" npt; connectivity: WiFi; material: Cold Rolled Steel; model: HW180A0G-NG.
The listing gives dimensions of 17.1 in (W) x 26.2 in (H) and a weight of 39.3 lb.
Right unit for this house?
Install it when
- One shower at a time in cold climates
- Replacing a gas tank heater
Look at another unit when
- More than 1 winter shower at once
- Homes without a gas line
Strengths and trade-offs
Strengths
- 180,000 BTU/h input
- Up to 7.9 GPM
Trade-offs
- Gas pipe sizing to confirm
- Stainless venting costs more
- Needs periodic descaling
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | HW180A0G-NG | Retailer |
|---|---|---|
| Dimensions (seller) | 17.1"W x 26.2"H | Retailer |
| Features (seller) | Easy to Install, LED Display, Overheat Protection, WiFi&APP Control, ±1℉ Temp Control | Retailer |
| Voltage | 120 V AC | Retailer |
| Max flow (maker) | 7.9 GPM | Retailer |
| Input (maker) | 180,000 BTU/h | Retailer |
| Product weight | 39.3 lb | Retailer |
| Material | Cold Rolled Steel | Retailer |
| Fuel | natural gas | Retailer |
| Connections | 3/4" npt | Retailer |
| Connectivity | WiFi | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- MIZUDO WCIU-HW199A1G-NG-M0 199,000 BTU Natural Gas Tankless Water Heater
- A. O. Smith ATI-540P-N 199,000 BTU Natural Gas Tankless Water Heater
- Noritz NR98SVNG Natural Gas Tankless Water Heater
- Eccotemp 6.8GB-NG Natural Gas Outdoor Tankless Water Heater
Full gas tankless water heaters spec grid · Every Westinghouse unit in the catalog
Final verdict
A sensible non-condensing gas tankless for one shower at a time in cold climates.
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