Rheem is the broad-line US specialist. Noritz is pure tankless. For tankless specifically:
Residential comparison
| Noritz NRC1111 | Rheem RTGH-95 | |
|---|---|---|
| BTU | 199.9k | 199.9k |
| GPM | 11.1 | 9.5 |
| Heat exchanger warranty | 12 years | 12 years |
| App | Less developed | EcoNet (functional) |
| Built-in recirc | EZTR series | No (external only) |
| Heat exchanger material | ecoTOUGH 316L stainless | Stainless |
| Typical price (199 kBTU) | $1,599-1,899 | $1,400-1,800 |
Roughly comparable on warranty. Noritz slightly better on heat exchanger material; Rheem slightly cheaper on price.
Software / smart-home
- Rheem EcoNet — broader scope (covers Rheem HVAC too). Functional
- Noritz — less developed; aftermarket Wi-Fi available
Rheem wins on app story.
Installer network
- Rheem: wider plumber network overall (broad-line brand)
- Noritz: specialized tankless installer network, plus strong commercial installer presence
Commercial
Noritz wins decisively. Rheem commercial exists but Noritz NCC cascade is the segment leader.
When to buy Noritz
- You want the ecoTOUGH 316L heat exchanger quality
- You want integrated recirculation (EZTR)
- Commercial install
- You value the longer commercial heat exchanger warranty
When to buy Rheem
- Price-sensitive — RTGH typically $200-400 cheaper
- You already use Rheem HVAC and want EcoNet integration
- Wider retailer availability (Home Depot stocks RTGH)
- Your installer is Rheem-experienced
Bottom line
Noritz is the better tankless on heat exchanger material. Rheem is the better deal and has better US retail presence. For commercial, Noritz wins decisively.