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Find Swimming pool heaters installers and replacers in Seattle

Neptune Pool & Spa, Inc.
3.9(
22
)
Swimming Pool Heaters - Install or Replace

Serving Seattle, WA and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"We are not done yet but determined that the hot tub is fixable and what is wrong. More parts are on the way to get the hot tub working. Neptune certainly knows their hot tubs, even my old system. Steve was not afraid to shimmy under my tight deck to look at the hot tub and even found a rat's net in the foam insulation that he started pulling out. It is pretty extensive as the rat or squirrel was putting in a hotel system. Neptune will be back and I am certain they will fix all the problems with my tub."
Response time1 day
15 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Puget Sound Pool Pros LLC
Puget Sound Pool Pros LLC
5.0(
5
)
Swimming Pool Heaters - Install or Replace

Serving Seattle, WA and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

Puget Sound Pool Pros LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Hot Tub Wash
Hot Tub Wash
Hot Tub Wash
Heater cleaning
Heater cleaning

+25

4 neighbors recently requested a quote
Avatar for Independently Dunn LLC
Independently Dunn LLC
4.4(
34
)
Swimming Pool Heaters - Install or Replace

Serving Seattle, WA and surrounding areas

In business since 2005

Small jobs welcome

Credit card accepted

"We have had a pool for 14 years. We have used several pool companies and always felt we were getting the run around. Matthew came out and gave us a fair price to replace our pool heater and change the gravel in the filter. Not only that he educated SO MUCH on our pool we were shocked and how little knowledge we had. His wife Jesse is also a delight to speak to on the phone. A++++++++ BEST pool company around!"
Clean and Maintain
Clean and Maintain
3 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Aegis Cleaning Services
Aegis Cleaning Services
4.1(
501
)
Swimming Pool Heaters - Install or Replace

Serving Seattle, WA and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"He did a very good job.  Be prepared for all of the extra's they will ask for beyond the initial deal.  I will say we have a lot more airflow going through our heater now and the dryer really needed it.  We had two cancellations before they came on the last time.
"
Air Duct Cleaning
Jeff & Kristin Waters
Housekeeping & Window Cleaning
Recommended by80%of homeowners
Avatar for ASA Pools & Hot tubs
ASA Pools & Hot tubs
5.0(
5
)
Swimming Pool Heaters - Install or Replace

Serving Seattle, WA and surrounding areas

In business since 2025

Free estimates

Emergency services offered

ASA Pools & Hot Tubs – Expert Pool & Hot Tub Care\n\nAt ASA Pools & Hot Tubs, we keep your pool and hot tub sparkling clean and perfectly balanced without draining your wallet. Our services include:\n1) Pool and hot tub cleaning\n2) Water testing and balancing\n3) Pool equipment repairs (pumps, filters, heaters – pools only)\n4) Routine maintenance for pools and hot tubs\n5) Emergency service for pools\n\nPlease note: We do not provide hot tub repairs only cleaning and maintenance.\n\nWe guarantee the lowest price in the Seattle area. If you find a better quote, we’ll beat it!\n\nServing Seattle and surrounding communities, we’re committed to affordable, reliable service you can trust.\n\n📞 Call us today for the best price and fastest response in town!\n\n

Hot Tub Service
Pool Maintenance
Pool Maintenance
Pool Maintenance
Hot tub deep cleaning

+5

Response time11 hrs
Castle Pools and Spa, LLC
3.2(
14
)
Swimming Pool Heaters - Install or Replace

Serving Seattle, WA and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"During covid we didnâ t have anyone maintaining our pool. I found Hugo last spring. He came out, assessed the situation, and was able to get our pool in working order pretty quickly. We also ended up needing a new pool cover which he was able to install himself. It looks great. Heâ s been quick to respond to phone calls or texts, and takes care of the maintenance quickly, and prices are fair."
Response time3 days
Recommended by80%of homeowners
Showing 1-10 of 22
FAQs for swimming pool heaters installation and replacement projects in Seattle, WA

Yes, you can add a heater to an existing pool. A pro can retrofit a heater to nearly any in-ground or above-ground pool. Adding a heater allows you to start the swim season earlier, finish it later, and maintain a steady water temperature in between. Many owners schedule the job during a larger pool upgrade, but it also works as a standalone project. Professional installation ties the new unit into the existing pump and plumbing for safe, efficient operation.

Most owners switch the heater on a day or two before they plan to swim, then shut it down afterward. Reaching the target temperature can take 24 to 72 hours, depending on pool size and outdoor conditions. Using a cover while the heater is off helps hold the heat and keeps energy costs in check.

Pool heaters can freeze if left exposed to extreme conditions. Freezing can damage internal heater components, potentially leading to costly pool repairs. Cycling water, covering the heater, and regular maintenance help prevent freezing. Sealing or winterizing your heater also protects it during the season—this involves draining water from the heater and its components.

Pool heaters operate with lifespans spanning from seven to 30 years. Gas and propane models last seven to 12 years, while electric and solar heaters perform efficiently for up to 30 years. Consistent professional maintenance and routine inspections extend the heater’s life and improve its performance, ensuring a safe and reliable heating system for your pool.

Before hiring a pool heater installation contractor, conduct thorough research by reviewing online feedback and gathering recommendations from trusted sources. Contact multiple professionals to discuss pricing, request references, and understand the complete installation process. This careful evaluation ensures you select a qualified contractor who delivers high-quality service and a successful installation.

The Seattle, WA homeowners’ guide to swimming pool heaters installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.