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Top-Rated Swimming pool heaters installers and replacers in San Antonio - Updated Nov 2026

Avatar for Affordable Solar & Pool Heating, LLC
Affordable Solar & Pool Heating, LLC
5.0(
497
)
Swimming Pool Heaters - Install or Replace

Serving San Antonio, FL and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"He contacted me within one hour.He was on time even early which is great for Sarasota. He replaced my pool pump and then came back to repair some pipes that were letting air into my pump. He was very pleasant and specializes in repairs not just a pool guy. I have had some issues for a while and he fixed everything where others have failed. So I would highly recommend him. He also installs heat pumps."
Hayward Heat Pump
Hayward Heat Pump
Hayward Heat Pump
Hayward Heat Pump
Hayward Heat Pump

+18

18 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for SolarX
SolarX
4.9(
576
)
Swimming Pool Heaters - Install or Replace

Serving San Antonio, FL and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"My pool heater broke on Friday and I searched for pros quickly. I realized that most pool companies don’t work on the weekends but I tried. I sent a request for an estimate to replace my pool heater but needed it to be completed on Monday. The owner of Affordable Solar and Pool Heating replied on Saturday and provided me with an estimate and scheduled the replacement on Monday. The tech, Henry came on Monday. He was one hour earlier and replaced the heater. He was very knowledgeable, Courteous , neat and took the time to explain everything he had done upon completing the replacement. It was a great experience and I was extremely happy with the results. Their work ethics or great and they are very focus on customer satisfaction. I strongly recommend this company."
Hayward 100K BTU
34 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Stoner Family Spa and Pool LLC
Stoner Family Spa and Pool LLC
4.9(
68
)
Swimming Pool Heaters - Install or Replace

Serving San Antonio, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"The technicians were very professional in every way, I highly recommend them for any pool and spa maintenance and repairs. We will gladly refer them to anyone needing pool repairs or upgrades for their pool or spa. Thanks guys."
Response time2 days
121 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for GPS Pools, Inc.
GPS Pools, Inc.
4.4(
86
)
Swimming Pool Heaters - Install or Replace

Serving San Antonio, FL and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"OMG...I can't say enough great things about GPS Pools. They took care of every aspect of my Swimming pool project. It now looks amazing. Not only that, they care about their customers. They have called me a few times since the project was completed just to make sure everything was going okay with the pool start up. It you choose somebody else to do your repairs you will be throwing your money away."
blue
green
purple
white
yellow

+45

Response time2 days
74 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Ten Plus Service, Inc.
Ten Plus Service, Inc.
4.9(
14
)
Swimming Pool Heaters - Install or Replace

Serving San Antonio, FL and surrounding areas

In business since 2002

Emergency services offered

Credit card accepted

"LCD readout on the heater did not work and hence I never knew what temp the heater was trying to reach.  Paul offered me the option of a used part at half price or a brand new one at regular price.  I now can set the temp of the water without guessing, and don't have to turn the heater off when the water becomes too warm.  Visiting family is happy.  
I asked Paul about the pool pump as well.  He gave me advice on when to replace it, but did not try to find more work himself, or expense for me.
"
Recommended by84%of homeowners
Avatar for Solar Solutions, Inc.
Solar Solutions, Inc.
4.6(
17
)
Swimming Pool Heaters - Install or Replace

Serving San Antonio, FL and surrounding areas

In business since 1997

Free estimates

Warranties offered

"Tim came by and inspected our pool and gave us a recommendation for which system would best fit our needs. He fully explained all our options with no pressure. After we decided on a system, Tim scheduled it for the next week. The installation crew were professional and did a great job. Tim also did a follow up to answer any questions and make sure we were satisfied. We love our warm pool. Great job Solar Solutions."
Response time1 day
Recommended by93%of homeowners
Showing 1-10 of 44
FAQs for swimming pool heaters installation and replacement projects in San Antonio, FL

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 San Antonio, FL 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.