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Pool Heater Installation in Seattle, WA

Gas heaters and heat pumps installed and repaired, so your pool stays warm well past summer.

Pool heater installation by ASA Pools and Spas in Seattle
5.0Star rated on Google across the Seattle area
Pool Heating

Turn a three month pool into a six month pool.

In the Pacific Northwest a good heater is the difference between a pool you use three months a year and one you enjoy from May to October. We size, install and service gas pool heaters and energy efficient heat pumps for pools, spas and swim spas.

Our technicians handle the complete installation including plumbing and electrical, then dial in the settings so the heater runs efficiently instead of constantly. We also repair existing heaters of every major brand across the greater Seattle area.

  • Gas heaters and heat pumps installed
  • Correct sizing for your pool and our climate
  • Heater repair for all major brands
  • Clean installation done to code
Pick the right heat

Gas, heat pump or repair.

Heat Pumps

Efficient and inexpensive to run in our mild climate. The best choice for pools heated all season long.

Gas Heaters

Fast heat on demand. Ideal for spas and for pools you warm up on short notice instead of all the time.

Heater Repair

No heat, error codes, short cycling or pilot problems diagnosed and fixed, most within the week.

Questions, answered

Pool heater FAQs.

How much does pool heater installation cost in Seattle?

It depends on the heater type and size and on your existing plumbing and electrical. After a quick site visit we give a firm quote covering the unit and the installation. Call (206) 202 1454 for a free estimate.

Should I choose a gas heater or a heat pump?

Heat pumps cost less to run and suit Seattle's mild climate, holding a steady temperature efficiently. Gas heats faster and is great for spas or occasional quick warmups. We help you pick based on how you actually swim.

What size pool heater do I need?

Sizing depends on your pool's surface area, whether you use a cover and your target temperature. An undersized heater runs constantly and never catches up, so we calculate the right size before recommending a unit.

Can a heater really extend my swim season in Washington?

Yes. With the right heater and a cover, most of our customers swim comfortably from May through October, roughly doubling the Seattle season.

How long does it take to heat a pool?

A properly sized heater raises pool temperature roughly one to two degrees per hour, so most pools warm up within a day. Gas heaters heat faster, while heat pumps hold temperature more efficiently. Using a pool cover cuts both heating time and cost dramatically in the Seattle climate.

Warm water ahead

Tell us about your pool. We'll size the heater.

Free quotes, fast answers, and a real person on the other end.

Get a heater quote