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

Avatar for Sweeney's Pool Service, Inc
Sweeney's Pool Service, Inc
4.6(
276
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"This review is authentic. As a new swimming pool owner since May of 2020, 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. Below picture shows the professional and beautiful work they have done for my swimming pool. 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 Water Works Group
Water Works Group
5.0(
8
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

In business since 1960

Free estimates

Emergency services offered

Water Works, a family-owned, fully licensed, and insured company since 1960, provides top-tier services for swimming pools, spas, hot tubs, landscape design, irrigation systems, and masonry to residential and commercial clients in Nassau and Suffolk counties. Holders of 15 licenses and recipients of numerous NESPA awards over the past years, as well as, most recently, several years in a row, as an NYS-certified provider, we expertly build, renovate, repair, and replace all related systems and features, including backflow inspections. Contact us to learn more!\n

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+16

Recommended by100%of homeowners
Avatar for Big Blue Pools & Spas
Big Blue Pools & Spas
4.4(
59
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"I have been using Big Blue Pool for over nine years now. Let me start off by saying Emma is one of the Frontline workers for Big Blue Pool, She is professional she is cheerful and a pleasure to talk to , She is so full of energy I just love to talk to her each year. Mike the owner of Big Blue is great he’s professional he is a great person to deal with very fair and stands behind everything Big Blue does, they always seem to amaze me by what they’ll do for their customers. They open and close my pool every year, come immediately whenever I need a service call. They have done many service calls on my pool, and have given me advice on how to do a lot of things myself which isn’t common for a business when you think about it. There workers have always done a good job and were always very pleasant and willing to answer questions.. It also seems that everyone they recommend for certain things they don’t do , (for example Bob the diver fixes leaks for them) Has the same Work ethics they do. If you need a pool company for anything this is the company that you want to use. If I could I would’ve given them 10 stars."
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Recommended by87%of homeowners
Avatar for E C Pool and Spa Service, LLC
E C Pool and Spa Service, LLC
3.5(
100
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

In business since 2009

"Erwin was a true gentleman, he called me back immediately. He knew what had to be done with my pool and installed a pool filter in a timelly matter. His worker was knowledable and knew exactly what had to be done to get the job done. I would definitely recommend EC Pools."
Response time8 hrs
Response rate90%
Recommended by84%of homeowners
Avatar for AF ELECTRIC CORP
AF ELECTRIC CORP
4.9(
59
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"I was trying to install a smart doorbell and chime by myself and I was feeling overwhelmed. After calling Aaron came the next day to fix and install both the chime and doorbell. He was extremely friendly and very professional. I had a really good interaction and would definitely recommend his services."
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+17

Recommended by98%of homeowners
Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,680
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"Choice was fast, efficient, and kept me posted on the progress of the claim. Although the water leak issue was discovered on a Friday, they had a plumber there to investigate by Saturday morning. When it was determined that the 20+ year old heater needed to be replaced, the replacement ordered, on-site, and installed by Wednesday morning. I am glad that we opted for the Choice Ultimate plan as other than the initial $65 service fee, all but one $50 ancillary expense was covered."
Recommended by81%of homeowners
JC Pools Remodeling
5.0(
3
)
Swimming Pool Heaters - Install or Replace

Serving Hewlett, NY and surrounding areas

In business since 2019

Free estimates

Credit card accepted

JC Pools Remodeling is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Pool Remodel
Response time12 hrs
Recommended by100%of homeowners
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FAQs for swimming pool heaters installation and replacement projects in Hewlett, 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 Hewlett, 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.