A well priced condensing whole home heater for buyers who want PVC venting and lower gas bills.
Amazon $1,411.70 Amazon $1,411.99The Rheem RTGH-95DV is the better tankless water heater overall, rated 4.3 to 4.1. The Rheem RTGH-95DV leads on value. The Rheem IKONIC S11i wins on efficiency. The Rheem RTGH-95DV costs $435.73 less ($1,411.70 vs $1,847.43).
A premium condensing heater for a large home that wants top efficiency and app control from one unit.
Amazon $1,847.43 Amazon $1,859.99Prices 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 RTGH-95DV for value ($7.06 per 1,000 BTU/h ($1,411.70, 199,900 BTU/h) vs $9.24 per 1,000 BTU/h ($1,847.43, 199,900 BTU/h)).
- Choose the Rheem IKONIC S11i for efficiency (0.96 UEF vs 0.93 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 RTGH-95DV | Rheem IKONIC S11i |
|---|---|---|
| Overall rating | 4.3/5 | 4.1/5 |
| Value 35% | 48 $7.06 per 1,000 BTU/h ($1,411.70, 199,900 BTU/h) | 24 $9.24 per 1,000 BTU/h ($1,847.43, 199,900 BTU/h) |
| Heating power 25% | 100 199,900 BTU/h | 100 199,900 BTU/h |
| Efficiency 15% | 81 0.93 UEF | 100 0.96 UEF |
| Warranty 25% | 100 15-year heat exchanger warranty | 100 15-year heat exchanger warranty |
Specifications
| Rheem RTGH-95DV | Rheem IKONIC S11i | |
|---|---|---|
| Heating | ||
| Fuel | Gas | Gas |
| Gas type | Natural gas or propane | Natural gas or propane |
| Gas input | 11,000 to 199,900 BTU/h | 11,000 to 199,900 BTU/h |
| Max flow | 9.5 GPM | 11.2 GPM |
| UEF | 0.93 | 0.96 |
| Condensing | Yes | Yes |
| ENERGY STAR | - | Yes |
| Installation | ||
| Venting | Both | Both |
| Vent type | 2 in or 3 in PVC/CPVC/PP | 2 in or 3 in PVC/CPVC/PP |
| Weight | 52.9 lb | 77.6 lb |
| Features | ||
| Built-in recirculation | No | No |
| Wi-Fi | No | Yes |
| Heat exchanger warranty | 15 years | 15 years |
| Parts warranty | 5 years | 5 years |
