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Find Swimming pool heaters installers and replacers in Diamond Bar

Avatar for Better Buy Pool Supply
Better Buy Pool Supply
4.2(
118
)
Swimming Pool Heaters - Install or Replace

Serving Diamond Bar, CA and surrounding areas

In business since 1991

Free estimates

Warranties offered

"They gave a reasonable estimate, did not increased prize after seeing bigger problem then anticipated. Were on time, cleaned up after . Tom very knowledgeable and friendly. We did not fill up the pool yet but I am confident that the crack is closed. All around a pleasant experience"
Variable speed pump install
pool pump install
variable pump install
pump install
pump install

+94

Recommended by92%of homeowners
Avatar for Best Quality Movers
Best Quality Movers
5.0(
299
)
Swimming Pool Heaters - Install or Replace

Serving Diamond Bar, CA and surrounding areas

In business since 2009

Credit card accepted

"I cannot say enough good things about them.  Extremely responsive, courteous  and professional.  Took great care in wrapping the furniture and in moving it into the house (made sure it didn't scratch the walls or the floors).  Were extremely patient with us when we changed our minds with the the placement of some of the furniture (moved couches from one room to another and back again).  We also had some challenging reassembling issues that they handled no problem.
"
Movers getting armour
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Recommended by94%of homeowners
Crystal Pool & Spa
3.9(
11
)
Swimming Pool Heaters - Install or Replace

Serving Diamond Bar, CA and surrounding areas

In business since 1990

Free estimates

Credit card accepted

"They had to do a lot of things.  Most of the people I worked with were great.  It took three months to finish the work.  They were all ready to go ahead and do the work.  They were responsive and tried to figure out what to do.  It was not entirely a perfect process.  Most of the part it was not their fault.  There was some frustration at times.  The pool, however, looks great.  The person I contacted in the company was super responsive.  She was great.  They were definitely responsive.  They did what they needed to do.  When we filled the pool it did not fill up since the pool was leaking.  They had to completely redo it.  It turned out that the electrostatic value was left open.  I had to keep filling the pool until they figured out the problem and got an extra $300 water bill."
Recommended by88%of homeowners
Avatar for Flying Dutchman Electric
Flying Dutchman Electric
4.7(
18
)
Swimming Pool Heaters - Install or Replace

Serving Diamond Bar, CA and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"John was available to start the work on a Friday afternoon. He installed the new outlet competently and completely. However, John made three trips to Home Depot to pick up supplies. The store is only 2 miles from my house and the first trip took over an hour. He needed to come back the following morning to complete the work because he needed two longer screws. Finally, he had quoted $200-250; but charged me $300 because the "supplies cost nearly $100.""
Recommended by90%of homeowners
Avatar for California Arborist
California Arborist
4.4(
149
)
Swimming Pool Heaters - Install or Replace

Serving Diamond Bar, CA and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"First of all, this guy is a certificated ARBORIST! He knows trees!  This was very important to me.  I didn't want "some guy with a chainsaw" to tell me the trees had to come down.  
After looking over the trees and their location, he told me that the trees would continue their secondary growth and that growth would push up the pavers in the yard, and even if the pavers were reinstalled the secondary growth would push them up again over time.  He gave me some options to consider.
He is based out of central Orange County and because of distance, he declined to do work in Bellflower which was disappointing.
"
Pool and Lighting
Golf Course Maintenance
Outdoor Kitchens
Recommended by88%of homeowners
Avatar for Green NRG Inc.
Green NRG Inc.
4.1(
62
)
Swimming Pool Heaters - Install or Replace

Serving Diamond Bar, CA and surrounding areas

In business since 1999

Emergency services offered

Credit card accepted

"It went very well. Everyone was very informative. They kept me up to date with the process and whenever I had a question, they were really prompt with their answers whether by email or phone. They were on time when they say they will begin work and the guys that installed my solar panel and inverters were very clean. I mentioned that I'm very worried about leaks because my son is very sensitive to mold and they made sure to seal everything very well n show us the work they've done and ask if we see anything that needs to be addressed. I was very pleased with the whole process. And it was easy, they took care of everything."
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+12

Recommended by90%of homeowners
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FAQs for swimming pool heaters installation and replacement projects in Diamond Bar, CA

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 Diamond Bar, CA 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.