Eccotemp SmartHome SH22i
#18 in GasFull review
An affordable smart heater for a small home that wants app control without paying for a premium brand.
Amazon $499 Amazon $499$499
The Eccotemp SmartHome SH22i is the better tankless water heater overall, rated 3.2 to 2.5. The Eccotemp SmartHome SH22i leads on value and heating power. The Noritz NRC661-DV wins on warranty. The Eccotemp SmartHome SH22i costs $781.09 less ($499 vs $1,280.09).
Noritz NRC661-DV
#20 in GasFull review
A compact condensing heater for a smaller home that wants PVC venting, though bigger rivals cost little more.
Amazon $1,280.09 Amazon $1,470.40$1,280.09
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 Eccotemp SmartHome SH22i for value ($3.56 per 1,000 BTU/h ($499, 140,000 BTU/h) vs $10.67 per 1,000 BTU/h ($1,280.09, 120,000 BTU/h)) and heating power (140,000 BTU/h vs 120,000 BTU/h).
- Choose the Noritz NRC661-DV for warranty (12-year heat exchanger warranty vs 5-year heat exchanger warranty).
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 | Eccotemp SmartHome SH22i | Noritz NRC661-DV |
|---|---|---|
| Overall rating | 3.2/5 | 2.5/5 |
| Value 35% | 100 $3.56 per 1,000 BTU/h ($499, 140,000 BTU/h) | 11 $10.67 per 1,000 BTU/h ($1,280.09, 120,000 BTU/h) |
| Heating power 25% | 25 140,000 BTU/h | 0 120,000 BTU/h |
| Efficiency 15% | 50 UEF not published (neutral score used) | 56 0.89 UEF |
| Warranty 25% | 0 5-year heat exchanger warranty | 70 12-year heat exchanger warranty |
Specifications
| Eccotemp SmartHome SH22i | Noritz NRC661-DV | |
|---|---|---|
| Heating | ||
| Fuel | Gas | Gas |
| Gas type | Natural gas or propane | Natural gas or propane |
| Gas input | 140,000 BTU/h | 15,000 to 120,000 BTU/h |
| Max flow | 6.8 GPM | 6.6 GPM |
| UEF | - | 0.89 |
| Condensing | No | Yes |
| ENERGY STAR | - | Yes |
| Installation | ||
| Venting | Indoor | Indoor |
| Vent type | - | Schedule 40 PVC |
| Weight | - | 39 lb |
| Features | ||
| Built-in recirculation | No | No |
| Wi-Fi | Yes | No |
| Heat exchanger warranty | 5 years | 12 years |
| Parts warranty | 2 years | 5 years |