(Good) Bradford White RE340S6
This model is a short-profile, standard 40-gallon electric water heater.
Features:
- Vitraglas enamel lining helps to extend tank life
- Non-CFC foam covers the sides and top of the tank, reducing heat loss
- Hydrojet sediment reducing device increases 1st hour delivery and minimizes temperature build-up in tank
- Fully automatic fast acting surface-mount thermostat with high limit energy cut-off for safety
- Direct heat transfer with dual, 1-phase copper screw type immersion elements
- Factory-installed heat traps reduce stand-by heat loss
- Protective magnesium anode rod.
Warranty:
6-year limited tank warranties / 6-year limited warranty on components parts
(Better) Bradford White RG240S6N
This model is a 40-gallon natural gas (NG), short-profile atmospheric vent residential water heater with 6-year warranty. T&P valve included.
Features:
- Defender FVIR system w/ ScreenLok flame arrestor prevents ignition of flammable vapors outside the water heater
- Vitraglas enamel lining helps to extend tank life
- Hydrojet sediment reducing device increases 1st hour delivery and minimizes temperature build-up in tank
- 3" x 4" Snap-Lock draft diverter allows for 3" or 4" vent connections
- Non-CFC foam covers the sides and top of the tank, reducing heat loss
- Factory-installed heat traps reduce stand-by heat loss
- Sight window allows to observe the operation of pilot and burner
- Protective magnesium anode rod
- Pedestal base
Warranty:
6-year limited tank warranties / 6-year limited warranty on components parts
(Best) Navien NPE-240S
These High Efficiency Condensing Tankless Water Heaters for residential and light commercial applications use innovative high efficiency technology to provide a comfortable environment.
Features:
- ½ gas pipe capable up to 24′
- Field convertible gas system
- Ultra condensing efficiency
- Dual stainless steel heat exchangers
- Low NOx emissions (20ppm)
- SCH 40, 2″ venting up to 60′
- Cascading capable