Electric Tankless Water Heater Comparison


Compare our Whole House Electric Heaters that will power 1 - 2 showers


Model TEMPRA36 TEMPRA29 TEMPRA24 AE125
Showers 2 1 + 1 Sink 1 + 1 Sink (warmer climates) 1 + 1 Sink (warmer climates)
Energy Efficiency 0.94 0.94 0.94 0.95
GPM @ 80° F rise 3.25 gpm 2.4 gpm 2.10 gpm 2.2 Gpm
GPM @ 70° F rise 3.5 gpm 2.65 gpm 2.35 gpm 2.6 Gpm
GPM @ 60° F rise 4.2 gpm 3.25 gpm 2.75 gpm 3.0 Gpm
GPM @ 55° F rise 4.5 gpm 3.60 gpm 2.95 gpm 3.7 Gpm
GPM @ 40° F rise 6.5 gpm 4.75 gpm 4.10 gpm 4.0 Gpm
Voltage 208/240 208/240 208/240 220/240
Wattage: 36 kW 28.8 kW 24 kW 26.85kw
Min. Amperage Required 300 A 200 A 180 A 200 A
Min Breaker Size 3 x 60 A 3 x 50 A 2 x 60 A 3 x 40 A
Recommended Wire Size 3 x 6 GA 3 x 8 GA 2 x 6 GA 8 GA
Temperature Range 100F – 125F 100F – 125F 100F – 125F 100F – 125F
Water Connection 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT
Water Pressure 150 PSI 150 PSI 150 PSI 150 PSI
Dimensions 21-3/4" x 14-1/2" x 4-5/8" 21-3/4" x 14-1/2" x 4-5/8" 14-9/16" x 14-1/2" x 4-5/8" 15 1/4"h x 15 1/2"w x 4 1/2"d
Weight 24.25 lbs 24.25 lbs 18 lbs 22 lbs
Warranty 3 yrs/ 3 yrs parts 3 yrs/ 3 yrs parts 3 yrs/ 3 yrs parts 10 yrs/ 1 yr parts