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

Avatar for Sweeney's Pool Service, Inc
Sweeney's Pool Service, Inc
4.6(
277
)
Swimming Pool Heaters - Install or Replace

Serving Selden, NY and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"As a new swimming pool owner that has no knowledge of swimming pool at all, I was looking for a contractor to adjust the depth of the existing swimming pool and replace the pool liner. I compared quotes from different companies and decided to choose Sweeney's after I spoke the owner Kenny, even though his quote is higher than other companies, his team has helped me understand the basics of swimming pool and take care of the entire life cycle of pool maintenace. Sweeney's Pool company has provided excellent service from adjusting depth of pool, new liner installation, pool opening, cleaning, closing and winter watch service at reasonable price. Sweenye's Pool company is honest, reliable and customer friendly. They have totally transformed the old swimming pool to a 5-star swimming pool every age can enjoy."
Luxury Pool Build
Backyard Oasis
Safety Cover Installations
Grotto Escape: Pool and Spa Oasis
Gunite Pool Builds

+94

Response time3 days
Response rate100%
1 neighbors recently requested a quote
Avatar for Advantage L I, Inc.
Advantage L I, Inc.
4.7(
183
)
Swimming Pool Heaters - Install or Replace

Serving Selden, NY and surrounding areas

Approved

In business since 2016

Emergency services offered

Warranties offered

"Advantage LI was great. Replaced pool heater. Price was right. Responded quickly to calls. Definitely be using them again. Opening the pool in a couple of hours...I'll be using Advantage LI"
changing liners
changing liners
liner
liner
pools liner

+39

Response time1 day
2 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for AAA POOLS SERVICES CORP
AAA POOLS SERVICES CORP
4.1(
27
)
Swimming Pool Heaters - Install or Replace

Serving Selden, NY and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Alex installed a new pool liner in a pool that was basically falling apart. It is now a brand new pool ready for the summer. Alex was very professional and easy to work with. Also very honest in helping us decide on switching to salt water which we will have him install next season. Couldn’t be happier"
Pool Renovation
Pool Renovation
Pool Renovation
Pool Renovation
Response time1 day
Response rate100%
Recommended by44%of homeowners
Avatar for Bradley Backyards, Inc
Bradley Backyards, Inc
4.1(
25
)
Swimming Pool Heaters - Install or Replace

Serving Selden, NY and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Bradley Backyard did a magnificent job installing my Inground pool cover. Very professional and neat. Will definitely be referring them to friends and family."
Response time4 days
4 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Rio Recreational Concepts
Rio Recreational Concepts
4.6(
100
)
Swimming Pool Heaters - Install or Replace

Serving Selden, NY and surrounding areas

In business since 2008

Free estimates

Credit card accepted

"Not only are they extremely professional and prompt but they are knowledgeable and reasonable in price I highly recommend this company and I will be using them for all my services that include my pool"
Response time1 day
Response rate88%
Recommended by95%of homeowners
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FAQs for swimming pool heaters installation and replacement projects in Selden, NY

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 Selden, NY 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.