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Find Swimming pool heaters installers and replacers in Middle Island

Avatar for Sweeney's Pool Service, Inc
Sweeney's Pool Service, Inc
4.6(
276
)

Serving Middle Island, 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 time4 days
1 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for One Love Pools and Spa
One Love Pools and Spa
4.9(
38
)

Serving Middle Island, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Did an amazing job! I will be hiring this company for all my pool repairs and cleaning."
Pool Cleaning
Pool Cleaning
Pool Cleaning
Pool Cleaning
Response time4 hrs
Response rate88%
22 neighbors recently requested a quote
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Avatar for Advantage L I, Inc.
Advantage L I, Inc.
4.7(
182
)

Serving Middle Island, 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
18 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Bradley Backyards, Inc
Bradley Backyards, Inc
4.1(
25
)

Serving Middle Island, 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 time6 days
6 neighbors recently requested a quote
Recommended by86%of homeowners
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Avatar for Water Works Group
Water Works Group
5.0(
8
)

Serving Middle Island, NY and surrounding areas

In business since 1960

Free estimates

Emergency services offered

"It was very good, they came on time, explained what was wrong. They replaced the sprinkler heads and I think they adjusted one. They worked wonderfully so I have no problem with it."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Recommended by100%of homeowners
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Avatar for Suffolk Dependable Pool Care
Suffolk Dependable Pool Care
4.5(
46
)

Serving Middle Island, NY and surrounding areas

In business since 2009

Credit card accepted

"They did a great job. Removed leaf net and cover,attached pump and hoses,and put in the chemicals. Returned after the pool was filled and water clear to power vac,treat and stabilize. Pool looks amazing. I couldn't be happier!
"
Recommended by92%of homeowners
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FAQs for swimming pool heaters installation and replacement projects in Middle Island, 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 Middle Island, 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.

See all articles
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