Quick answerHeat pump water heater installation in Spokane replaces a standard electric tank with a hybrid unit that heats water using a small heat pump on top of the tank, backed by electric elements. It needs enough surrounding air, a condensate drain and usually a standard 240-volt circuit. Placement matters most here, because a cold garage in winter reduces its efficiency.
Updated September 2026
How a hybrid water heater works
A heat pump water heater looks like a tall electric tank with a compressor and fan on top. It moves heat from the room air into the water, and cools and dries the space around it as it runs. When demand is high or the air is too cold, electric elements take over, which is why these are called hybrid units.
They make the most sense when replacing an electric tank, since that is where the savings are largest. For homes already on gas, a gas tank or tankless unit usually costs less to run, and we say so.
What affects heat pump water heater cost
What every install includes
What getting it right involves
Garage and basement placement
These units need a good volume of air around them and work best in spaces that stay above roughly 40 to 50 degrees. A basement in a Spokane home is usually ideal: it stays mild through winter, and the unit's cooling and dehumidifying effect is welcome in summer. An unheated garage can drop low enough in January that the unit spends long stretches on its electric elements. We check the space, the ceiling height and the air volume before recommending a location, and duct the air intake or exhaust where a closet is too small.
Replacing an electric tank with a heat pump model
Most homes with an electric tank already have the 240-volt circuit a hybrid unit needs. We drain and remove the old tank, set the new unit, connect the water lines with a new relief valve and expansion tank where required, and run a condensate drain to a floor drain or pump. Because the unit is taller than most tanks, we measure the ceiling height before ordering. We set the operating mode, usually hybrid, and explain when to switch modes.
Rebates and incentives
Avista's Washington incentives for home HVAC and water heating have included hybrid heat pump water heaters on Avista service, paid through participating contractors rather than to the homeowner. Washington's state HEAR program also covers heat pump water heaters for households at or below 150 percent of area median income. The federal tax credit ended after 2025. Program terms change, so we confirm what currently applies to your address and your income tier before you commit, and give you the model and invoice details the programs ask for.
Water heater types for an electric home
| Standard electric tank | Heat pump water heater | |
|---|---|---|
| Electricity use | Highest | Much lower |
| Upfront cost | Lower | Higher |
| Space needs | Small closet is fine | Needs air volume or ducting |
| Side effect | None | Cools and dries the surrounding space |
| Best for | Tight spaces | Basements and larger utility rooms |
Incentives available to Spokane homeowners
Avista's Washington HVAC and water heating incentives have included hybrid heat pump water heaters, paid through participating contractors in its Midstream program, and Washington's HEAR program covers heat pump water heaters for households at or below 150 percent of area median income. With the federal credit gone after 2025, those programs are what lower the upfront cost here, so we check both before quoting.
How a heat pump water heater install runs
- 1
Check the space
Air volume, temperature and ceiling height.
- 2
Confirm incentives
Current Avista and state program terms.
- 3
Remove the old tank
Drained and hauled away.
- 4
Set the new unit
Level, clear of walls for airflow.
- 5
Connect
Water, relief valve, condensate and power.
- 6
Fill before power
Tank full before elements energize.
- 7
Set the mode
Hybrid mode set and explained.
Heat pump water heater questions
Will it work in my garage in winter?
It will, but in a cold garage it runs on its electric elements more often. A basement is usually better here.
Is it worth it if I have gas?
Usually not. The biggest savings come from replacing an electric tank.
Is it noisy?
It makes a low fan and compressor hum, similar to a dehumidifier.
Does it need a special circuit?
Most use the same 240-volt circuit as a standard electric tank.
Are there rebates?
Avista and the state HEAR program have covered these units. Terms change, so we confirm before you buy.
Other gas & water heating services we handle
Tankless Water Heater Installation
Sized, quoted and permitted.
Tankless Water Heater Installation detailsGas Fireplace Insert Installation
Sized, quoted and permitted.
Gas Fireplace Insert Installation in SpokaneGas Fireplace Repair and Service
Answered 24/7, parts on the truck.
How we handle gas fireplace repair and serviceCut the cost of hot water.
Call about a heat pump water heater in Spokane, WA.
