Appliances / Heat pump water heaters / Ruud
Ruud PROUH40 T2 RU375-15
36 gal · 240-volt integrated heat pump water heater
Check the price at the store, then add $1,521 of electricity to get the true cost. We may earn a commission if you buy through these links; as an Amazon Associate we earn from qualifying purchases.
- Price. Check what it costs at the store.
- Plus running cost. Add $1,521 of electricity over 13 years. That is the part the price tag hides.
- Compare. Pick your state below, then check the cheaper-to-run models of the same size.
About the Ruud PROUH40 T2 RU375-15
The Ruud PROUH40 T2 RU375-15 is a 36 gal 240-volt integrated heat pump water heater certified by ENERGY STAR. Its official test figure is 643 kWh of electricity a year, which at the U.S. average price of 18.19¢ per kWh comes to $117 a year, or $1,521 over a typical 13-year life.
For the same hot water, a standard electric tank water heater would use about 2,411 kWh a year, so this model uses 73% less electricity and saves about $322 a year.
Among 371 240-volt integrated models it ranks #6 for running cost, in the cheapest 10%.
Listed features: smart / app control.
Cost to run where you live
643 kWh a year (ENERGY STAR test figure) × 18.19¢ per kWh, the average residential price in the U.S. for Jan–Aug 2026 (EIA). Your bill depends on your utility and how you use it.
One of the cheapest to run
No ENERGY STAR model of the same type and size uses less electricity.
Specs
| Brand | Ruud |
| Model | PROUH40 T2 RU375-15 |
| Type | 240-volt integrated |
| Energy use | 643 kWh / year |
| Federal maximum for this type | 2411 kWh / year |
| Size | 36 gal |
| Width | 20.3 in |
| Features | Smart / app control |
| Tank size | 36 gal |
| First-hour rating | 46 gal |
| Efficiency (UEF) | 3.45 |
| Usage pattern | Low-Usage |
| Voltage | 240 |
| Tank height | 62.3 in |
| Tank diameter | 20.3 in |
Specs and energy use from the ENERGY STAR certified products list (U.S. EPA). An asterisk in a model number stands for colour or finish codes. HouseholdLeak is not affiliated with ENERGY STAR or the EPA.
Questions people ask
How much does the Ruud PROUH40 T2 RU375-15 cost to run?
About $117 a year at the U.S. average electricity price (18.19¢/kWh), based on its ENERGY STAR rating of 643 kWh a year. In a state with expensive power it can be much more; pick your state on this page to see your number.
How much will the Ruud PROUH40 T2 RU375-15 cost in electricity over its life?
About $1,521 over 13 years, a typical life for a heat pump water heater. Add that to the price you pay to get the true cost to own.
Is the Ruud PROUH40 T2 RU375-15 energy efficient?
Yes. It is ENERGY STAR certified and uses 73% less electricity than a standard electric tank water heater.
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