ThermoMate CZ750NG
#6 in GasFull review
A low cost indoor whole home heater for natural gas homes, but check the warranty with ThermoMate before buying.
Amazon $739.99$739.99
4.0/5
A low priced whole home heater for buyers who accept a short warranty and thin documentation to save several hundred dollars.
- 199,000 BTU/hHeating power
- 7.6 GPMMax flow
- 0.80UEF
Check price at Amazon$629.99Check price at Amazon$629.99
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 199,000 BTU/h burner for far less than the big brands
- Same price for natural gas and propane
- Free replacement if it fails in the first year
Cons
- No published heat exchanger warranty beyond the first year
- No maker spec sheet, so venting and weight are unknown before you buy
- A 0.80 UEF uses more gas than most rivals
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its fuel. How we rank explains each one.
Specifications
| Model number | CE686NG |
|---|---|
| Heating | |
| Fuel | Gas |
| Gas type | Natural gas or propane |
| Gas input | 199,000 BTU/h |
| Max flow | 7.6 GPM |
| UEF | 0.80 |
| Condensing | No |
| Installation | |
| Venting | Indoor |
| Features | |
| Built-in recirculation | No |
| Wi-Fi | No |
Alternatives in this fuel
Rheem IKONIC S11i
#7 in GasFull review
A premium condensing heater for a large home that wants top efficiency and app control from one unit.
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Rinnai RE199e
#9 in GasFull review
A strong pick for homes in mild climates that want full whole home power without running a vent.
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