Reliance 6 75 NORT 75-Gallon Natural Gas Water Heater
Reliance 6 75 NORT 75-Gallon Natural Gas Water Heater Review
The Reliance 6 75 NORT is a 75-gallon natural gas atmospheric water heater built by A.O. Smith and sold under the Reliance brand. The "6 75 NORT" identifies 6-year warranty, 75-gallon capacity, natural gas atmospheric. Value-tier large-capacity gas tank.
Specs: 76,000 BTU input (higher than standard 40K BTU for adequate recovery at large capacity), UEF 0.62, 110-gallon FHR, 6-year tank and 1-year parts warranty. Atmospheric vent through B-vent.
The 75-gallon Reliance serves large households (5+ people) on a budget. The 76K BTU burner provides ~70 gph recovery at 90°F rise — enabling back-to-back showers for 5+ household members without depletion.
About $1,200 unit, $2,300 installed. For households with basement install supporting heat-pump or considering tankless conversion, those alternatives offer dramatically lower operating cost ($13/month heat-pump vs ~$45 for standard 75-gallon atmospheric gas).
- Natural gas combustion — faster recovery than electric resistance at comparable tank size
- 75-gallon capacity — right-sized for 3–4 person households with standard usage patterns
- 134-gallon first-hour rating — handles morning-rush simultaneous demand without shortfall
- Below-average UEF 0.6 — modern standard models reach 0.65+, condensing 0.95+
- 6-year warranty — below the 8–12 year average for premium models in this class
- Atmospheric venting requires vertical B-vent — less routing flexibility than power-vent or condensing alternatives