What it delivers
The APUS AP-ADSK140-H18 14 kW Electric Tankless Water Heater is a compact electric tankless rated at 14 kW on 240 volts. Its listing gives a maximum flow of 3.3 GPM.
Expect about 1.4 GPM with cold winter water (a 70°F rise) and 2.1 GPM when the inlet is milder (45°F rise); that is less than one 2 GPM shower in January. Check your house in the planner.
At 240 volts 14 kW is about 58 amps. The maker calls for one dedicated 60A double-pole breaker. Whether your panel can carry it alongside heating and cooking loads is an electrician's call.
No flue, no gas line and a compact box on the wall; the trade-off is that a cold winter inlet cuts its flow sharply.
Listed details: material: Sheet Metal with Insulating Paint; model: AP-ADSK140-H18; warranty: 2 Year Manufacturer Warranty.
The listing gives dimensions of 11.42 in (W) x 13.7 in (H) and a weight of 12.8 lb.
Warranty, per the listing: 2 Year Manufacturer Warranty.
Right unit for this house?
Install it when
- One shower at a time in mild climates
- Homes with no gas service
Look at another unit when
- Panels without spare capacity
- More than 1 shower at once in cold winters
Strengths and trade-offs
Strengths
- 14 kW
- Up to 3.3 GPM
- No venting or gas line
- Breakers stated by the maker
Trade-offs
- Flow drops with cold inlet water
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | AP-ADSK140-H18 | Retailer |
|---|---|---|
| Dimensions (seller) | 11.42"W x 13.7"H | Retailer |
| Power | 14 kW | Retailer |
| Voltage | 240 V | Retailer |
| Max flow (maker) | 3.3 GPM | Retailer |
| Product weight | 12.8 lb | Retailer |
| Warranty | 2 Year Manufacturer Warranty | Retailer |
| Material | Sheet Metal with Insulating Paint | Retailer |
| Breakers (maker) | one dedicated 60A double-pole breaker | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- ThermoMate ET110 11 kW Electric Tankless Water Heater
- ThermoMate ET140 14 kW Electric Tankless Water Heater
- Westinghouse WET011A0G 11 kW Electric Tankless Water Heater
- Titan N-100 10.8 kW Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every APUS unit in the catalog
Final verdict
A well-specified compact electric tankless for one shower at a time in mild climates.
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