Rheem RTG-95DV
#4 in GasFull review
A whole home indoor heater for buyers who want maximum burner size without the condensate drain of a condensing unit.
Amazon $1,201.29$1,201.29
The Rheem RTG-95DV is the better tankless water heater overall, rated 4.1 to 3.4. The Rheem RTG-95DV leads on heating power and value. The ThermoMate RTC68iN wins on efficiency. The ThermoMate RTC68iN costs $101.30 less ($1,099.99 vs $1,201.29).
ThermoMate RTC68iN
#15 in GasFull review
A budget condensing heater for natural gas homes that want PVC venting and lower gas bills, if you can live with an unclear warranty.
ThermoMate $1,099.99$1,099.99
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Rheem RTG-95DV for heating power (199,900 BTU/h vs 163,000 BTU/h) and value ($6.01 per 1,000 BTU/h ($1,201.29, 199,900 BTU/h) vs $6.75 per 1,000 BTU/h ($1,099.99, 163,000 BTU/h)).
- Choose the ThermoMate RTC68iN for efficiency (0.91 UEF vs 0.82 UEF).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gas tankless water heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Rheem RTG-95DV | ThermoMate RTC68iN |
|---|---|---|
| Overall rating | 4.1/5 | 3.4/5 |
| Value 35% | 63 $6.01 per 1,000 BTU/h ($1,201.29, 199,900 BTU/h) | 52 $6.75 per 1,000 BTU/h ($1,099.99, 163,000 BTU/h) |
| Heating power 25% | 100 199,900 BTU/h | 54 163,000 BTU/h |
| Efficiency 15% | 12 0.82 UEF | 69 0.91 UEF |
| Warranty 25% | 100 15-year heat exchanger warranty | 50 heat exchanger warranty not published (neutral score used) |
Specifications
| Rheem RTG-95DV | ThermoMate RTC68iN | |
|---|---|---|
| Heating | ||
| Fuel | Gas | Gas |
| Gas type | Natural gas or propane | Natural gas |
| Gas input | 11,000 to 199,900 BTU/h | 163,000 BTU/h |
| Max flow | 9.5 GPM | 9.4 GPM |
| UEF | 0.82 | 0.91 |
| Condensing | No | Yes |
| Installation | ||
| Venting | Indoor | Indoor |
| Vent type | 3 in x 5 in concentric Category III stainless | PVC |
| Weight | 46.5 lb | 50 lb |
| Features | ||
| Built-in recirculation | No | No |
| Wi-Fi | No | No |
| Heat exchanger warranty | 15 years | - |
| Parts warranty | 5 years | - |