Winter Haven is built around water. With the Chain of Lakes running through town and a backyard pool behind a huge share of the homes here, the swimming season is supposed to run most of the year. Then a January cold snap arrives, the heat pump starts tripping the breaker or the gas heater refuses to ignite, and the pool that cost real money to build sits at 62 degrees. Pool heaters are also the piece of equipment most local companies handle worst: pool service routes are built around chemicals and pumps, and most HVAC companies never touch them at all.
That is what this list sorts out. We looked at companies serving Winter Haven and Polk County that actually document pool heater work on their own website, and we favored the ones with a local address, a Florida license, and technicians who understand both sides of the equipment: the refrigeration circuit inside a heat pump and the combustion side of a gas heater. Integrity Refrigeration & AC takes the top spot because pool heaters are a named service line with its own repair, replacement, maintenance, inspection and emergency pages, and because the same NATE-certified technicians who diagnose refrigerant and combustion problems all day are the ones showing up at the equipment pad.
1. Integrity Refrigeration & AC
Location: 1226 6th St SW, Winter Haven, FL 33880
Services: Pool heater repair and service, pool heater installation and replacement with load-calculated sizing, pool heater maintenance and tune-ups, inspection and testing, emergency pool heater repair; plus residential air conditioning, heating, heat pumps, ductless mini-splits and indoor air quality.
Website: integrityrefrigerationandac.com
Why They Stand Out
Integrity Refrigeration & AC started in Winter Haven in 2015 and went full time in 2017 with one technician, one truck and one trailer. It is now a 13-person company with eight technicians and six service vans, licensed in Florida as CAC1821179, an ACCA member, BBB accredited, and holding a 4.9-star Google rating. The depth behind that growth is training: every technician is required to carry NATE certification, and the company runs continuous in-house and third-party training rather than treating education as an annual checkbox. That matters more on pool heaters than on almost anything else in the yard, because one failure is a sealed refrigeration circuit problem and the next is a flame sensor, a pressure switch or scale inside a heat exchanger.
Their pool heater repair and service approach is diagnosis first. The published failure list covers igniters and flame sensors, failing compressors and fan motors, low refrigerant charge and leaks, bad thermostats and pressure switches, clogged filters and heat exchanger scaling, cracked headers and plumbing leaks, and electrical faults. On replacements they size the unit to pool volume, surface area and how you actually swim, walking through the trade-off between a gas heater’s fast heat-up and a heat pump’s much lower operating cost, and they are blunt about the point where repair money stops making sense. Technicians are paid hourly or salary rather than on commission, so nobody in the truck earns more by talking you into a new heater.
Highlights:
- Real tune-ups, not a hose-down. The published pool heater maintenance scope includes cleaning coils, burners and cabinet, tightening electrical connections, verifying refrigerant charge, testing safety controls, and inspecting the heat exchanger for scale and corrosion. Central Florida humidity, dust and unbalanced water chemistry are what kill these units early.
- Answered until 8 PM, every day of the week. The office runs 8 AM to 5 PM, but the company answers its own phones until 8 PM seven days a week and dispatches a technician when equipment is down. Installations are usually scheduled the next day and rarely more than three or four days out, even at the peak of summer.
- Documented, warrantied work. Invoices are photo-documented, installations and replacements carry a one-year labor warranty, and select upgraded equipment carries five-year parts and labor coverage.
- Free second opinion. If another company has already quoted a heater replacement, Integrity will give a no-obligation second opinion with the findings written down.
2. Rankin Mechanical Service
Location: 320 3rd St SW, Winter Haven, FL 33880
Services: Pool heating pump repair, pool heat pump diagnostics and restoration on all makes and models, new pool heater installation estimates, plus residential and commercial HVAC.
Website: rmscooling.com
Overview: A small family-run Winter Haven company licensed as CAC1823102, serving Winter Haven, Jan Phyl Village, Auburndale, Eagle Lake, Lake Alfred, Dundee, Bartow and Lakeland. Their pool heating page is specifically about the heat pump side of the equipment rather than a generic pool page.
Highlights:
- Services all makes and models of pool heating pumps
- Free estimates on new installations when a unit is past economical repair
- Findings explained in plain language before work starts
3. Chain of Lakes Refrigeration & Air Conditioning
Location: 1825 E Lake Cannon Dr NW, Winter Haven, FL
Services: Pool heater repair and pool heater replacement, commercial refrigeration, residential and commercial AC installation and repair, heat pumps, mini-splits, maintenance plans, air ducts.
Website: chainoflakesrefrigeration.com
Overview: A family-owned, locally operated Winter Haven company in business since 2020, covering Polk County communities including Auburndale, Lake Alfred, Haines City, Dundee, Wahneta and Lakeland. Pool heaters get their own dedicated service pages alongside the HVAC and refrigeration lines.
Highlights:
- Separate pages for pool heater repair and pool heater replacement
- 24/7 emergency service availability
- No-obligation free estimates offered within 24 hours
4. Michael’s Pool Service Inc.
Location: 2618 Industrial Park Dr, Lakeland, FL
Services: Pool heater and heat pump repair, pool pumps and motors, filters and filtration, circulation and plumbing, leak and pressure diagnosis, automation equipment, residential and commercial pool repair.
Website: michaelspoolserviceinc.net
Overview: A Lakeland company serving Polk County since 1987, approaching the heater as one component in the whole pool system. Useful when the symptom is not clearly the heater and could be flow, filtration or automation.
Highlights:
- Diagnoses the problem before recommending equipment replacement
- Licensed and insured, residential and commercial work
- Publishes a troubleshooting learning center for pumps, timers, salt systems and filters
5. Richard’s Pool Service
Location: Lakeland, FL (Polk County)
Services: Pool heater installation for electric systems, pump and motor replacement, saltwater conversions, pool equipment repair and part installation.
Website: richardspoolservicefl.com
Overview: Serving Lakeland and Polk County since 1979, one of the longest-running pool equipment companies in the county. The focus is equipment replacement and installation across all major pool brands rather than HVAC-style diagnostics.
Highlights:
- Nearly five decades of local pool equipment experience
- Handles all major pool equipment brands
- Free quotes on repair and installation work
What to Look for in a Pool Heater Company in Winter Haven
- Ask which type of heater they actually service. A gas heater and an electric heat pump fail in completely different ways. A company comfortable with refrigerant circuits, combustion analysis and water chemistry effects can handle either one.
- Insist on sizing, not guessing, on a replacement. Proper sizing uses pool volume, surface area and the months you want to swim. A unit chosen off the shelf will either run constantly or never reach temperature.
- Get a second opinion before approving a replacement. A cracked header or a failed compressor is a real replacement trigger, a dirty flame sensor is not. Integrity offers a free second opinion in writing on quotes from other companies.
- Check the license and the address. A Florida HVAC or pool contractor license number and a Winter Haven or Polk County address mean accountability and a faster drive when the water is cold.
- Ask about maintenance, not just repair. Coils, burners and heat exchangers in Central Florida collect dust, debris and scale fast. An annual tune-up is what keeps a heater from failing during the one cold week you wanted to swim.
FAQ: Pool Heater Repair in Winter Haven, FL
Why is my pool heater running but not heating the water?
On a heat pump, that usually points to a low refrigerant charge, a failing compressor or restricted airflow through a dirty coil. On a gas heater, it is often an ignition problem or scale inside the heat exchanger choking off heat transfer. Both need a real diagnosis before anyone quotes parts.
How fast can someone come out in Winter Haven when the heater fails?
Local Polk County companies commonly offer same-day or next-day response, and several list 24/7 emergency availability. Integrity answers its own phones until 8 PM daily and handles emergency pool heater repair when a unit fails outright.
How long should a pool heater last in Florida?
Most gas pool heaters run 8 to 12 years in Florida, and heat pumps often last a bit longer. Frequent repair calls, rising electric or gas bills, or a major component failure like a compressor or leaking heat exchanger usually mean replacement is the cheaper path.
Is a heat pump or a gas pool heater better for a Winter Haven pool?
A gas heater heats water fast, which suits occasional weekend use, while a heat pump costs far less to run for a longer swimming season. The right answer depends on how often you swim and in which months. An inspection and performance test on your current setup is a good starting point before choosing.
Do I need a pool company or an HVAC company for a heater problem?
If the issue is clearly plumbing, flow or automation, a pool service company is a fine first call. If the heater itself is the failure, especially a heat pump, an HVAC and refrigeration company that works on sealed systems every day usually diagnoses it faster.
The Bottom Line
A cold pool in Winter Haven is a solvable problem, and the difference between a two-hour repair and a needless replacement quote comes down to who opens the panel. Integrity Refrigeration & AC earns the top spot here because pool heaters are a full service line, not an afterthought: a Winter Haven address, NATE-certified technicians on continuous training, load-calculated sizing on replacements, photo-documented invoices, a one-year labor warranty, a free second opinion, and phones answered until 8 PM every day of the week. For homeowners across Polk County who want the swimming season back, that is a strong place to start.