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TRUSTED BY MARATHON, FL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon17
    Verified pool and spa services reviews

Top-Rated Pool and spa technicians in Marathon - Updated Nov 2026

Core Mechanical
4.4(
28
)
Above Ground Swimming Pool or Accessories - Repair or ServiceHot Tub or Spa - Repair or ServiceIn Ground Swimming Pool or Accessories - Repair or Service+6 more

Serving Marathon, FL and surrounding areas

In business since 2004

Emergency services offered

Credit card accepted

"A year ago they responded to an SOS related to a full A/C failure. They were prompt and professional. It took several days, in the heat of the summer, till they were able to fix it, but they had to get a part from the west coast so we sweated through the ordeal. While they were working on replacing the main board, I also engaged them to clean the system. I thought the charge was high ($1000), but needed it done. A year later, one of the A/C mini-split heads stopped working. They came the next day. I paid $200 for them to trouble shoot it, which took approximately 20 minutes. (Subsequently another A/C service charged me only $95 to trouble shoot!) They said they would order the part and get back to me. After I week, I had not heard from them. When I called they said they could get the part but it would take 4-6 weeks. I said okay. What could I say. I left it in their trustworthy hands. After 6 weeks I heard nothing from them. I called. I left 4 messages, which were all unreturned. On the 5th try, someone answered. He said he couldn't get the part. Would have been nice to know that 5 weeks ago. Still puzzled why they didn't communicate with me and thus the low review. I have to say that I thought they were really nice people, but obviously my business wasn't that important to them. So be it. But a little courtesy and honesty would go a long way when servicing a small community like Key West. Because of the later incident, I wanted to give them an F, but that wouldn't be fair. If you're lucky, have deep pockets, and the problem isn't complicated, they are okay. Just be aware. I thought I had actually found a reliable service, but that wasn't the case."
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Recommended by87%of homeowners
Avatar for O.P. Pool Leak Detections llc
O.P. Pool Leak Detections llc
4.7(
15
)
Above Ground Swimming Pool or Accessories - Repair or ServiceHot Tub or Spa - Repair or ServiceIn Ground Swimming Pool or Accessories - Repair or Service+6 more

Serving Marathon, FL and surrounding areas

Free estimates

Emergency services offered

Warranties offered

"OP gets the job done! I spent almost 2 weeks looking for a company to fix leaks in spa and skimmer. Everyone would fix skimmer but not spa and estimates were given without looking at damage. Op came out the same day I called and started the next day. We ended up resurfacing after leaks were fixed and i had brand new looking pool within a week. I am very pleased with the end results and the professionalism of this company. Highly recommend."
Pool & Spa Service and Repair Project
Pool & Spa Service and Repair Project
Pool & Spa Service and Repair Project
Pool & Spa Service and Repair Project
Pool & Spa Service and Repair Project

+33

Response time10 hrs
Response rate95%
Recommended by86%of homeowners
Avatar for KEYS JL POOL SERVICE LLC
KEYS JL POOL SERVICE LLC
5.0(
6
)
Swimming Pool - Clean and Maintain

Serving Marathon, FL and surrounding areas

In business since 2023

Free estimates

Credit card accepted

"Wonderful job Mr. Nodarse do, once a week they come out and do maintenance to my pool, leaving the pool nice and spotless, very knowledgeable about the pool cleaning business, leaned a lot over the few weeks keys JL pool service LLC has been cleaning my pool, great job, best prices in the keys and I would recommend them to anyone from the keys!"
Response time10 mins
Response rate93%
Recommended by100%of homeowners
Avatar for AAA Construction & Restoration Services
AAA Construction & Restoration Services
3.8(
201
)
Above Ground Swimming Pool or Accessories - Repair or ServiceHot Tub or Spa - Repair or ServiceIn Ground Swimming Pool or Accessories - Repair or Service+6 more

Serving Marathon, FL and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"             We called the company  (AAA Construction  Restoration Services) to repair a leak in our roof. John Walters responded immediately and made an appointment to come to our home the next day. He was on time , looked over the situation and gave us an estimate by text.!  We agreed and the very next morning , on time as promised, several men showed up and began working right away.  They were very hard working, no goofing around, and repaired the problem . They even painted an area where there was damage (which was not even in the estimate) They also cleaned up everything and hauled away any debris.
           Having previously dealt unhappily  with Miami construction companies, I was very happily surprised and pleased with all aspects of the way AAA dealt with me.  They were ON TIME,  EFFICIENT, REASONABLE and DID  A GREAT JOB.  I would recommend them  to anyone with a similar need
Mike Maguire



"
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+21

Recommended by84%of homeowners
Poseidon Pools & Spa LLC
5.0(
1
)
In Ground Swimming Pool or Accessories - Repair or ServiceSwimming Pool - Clean and Maintain

Serving Marathon, FL and surrounding areas

In business since 2022

Free estimates

Credit card accepted

Poseidon Pools Spa is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Recommended by100%of homeowners
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Pool and Spa Servicing FAQs, answered by experts

Yes. If you test the water and the alkalinity is too low, you can raise it by adding an alkalinity increaser, which likely came with your hot tub’s chemical kit. In a pinch, you can use baking soda to raise the hot tub’s alkalinity. Raising the alkalinity will prevent the hot tub water from becoming too acidic.

Generally, it is more cost-effective and energy-efficient to leave your hot tub on all the time rather than turning it on and off. Reheating a hot tub from a cold temperature consumes a significant amount of energy, so maintaining a constant temperature is usually more economical, especially with frequent use.

For daily or weekly use, it's recommended to keep the water at a constant, reduced temperature, such as between 80 and 95 degrees Fahrenheit, and then increase it to your desired temperature before getting in. If you know you won't be using the hot tub for an extended period, you can lower the temperature to save on energy costs. However, if you use it very infrequently, you can turn it off completely, as long as there is no risk of the water freezing.

How often you change the water in your swim spa depends on how often you use it. Most manufacturers recommend changing the water every three to six months. If you use your swim spa throughout the seasons, it’s a good idea to set up a quarterly deep cleaning schedule. The ideal instructions should be in the owner’s manual.

Biofilm growth can cause a hot tub to feel slimy. Hot tub biofilm is a slimy substance that’s typically due to natural contaminants like makeup, soaps, skin oils, deodorants, or lotions. A hot tub can also have a slimy interior or slimy water if the tub’s filters are old or damaged, or if the hot tub isn’t properly cleaned. You should drain your hot tub, wipe away any slimy residue, then refill the water and use a spa purge product that prevents the buildup of biofilm.

It’s possible to move a hot tub on its side or base as long as it fits snugly in the moving truck, with plenty of padding around it. This moving method requires specialized equipment and careful planning, like moving straps, dollies, and moving blankets.

The Marathon, FL homeowners’ guide to pool and spa services

From average costs to expert advice, get all the answers you need to get your job done.