Costa Mechanical technician installing equipment

Pool Heaters in Cape Coral & Southwest Florida

Swim year-round. Costa Mechanical installs, sizes and repairs pool and spa heaters across Lee, Collier and Charlotte counties — with honest advice on heat pump, gas and electric.

A pool is one of the best parts of living in Southwest Florida — but even here, the water cools off enough in the winter months to chase you out. A properly sized pool heater turns a seasonal pool into a year-round one, and a chilly spa into a warm soak any night you want it. Costa Mechanical & Refrigeration installs, services and repairs pool and spa heaters across Lee, Collier and Charlotte counties.

We're a family-owned, veteran-operated company, and the same diagnostic discipline that makes us good at HVAC and refrigeration makes us good at pool heat. We size the system to your actual pool and habits, install it cleanly, and give you up-front pricing — no upselling you into more heater than you need.

Heat pump vs. gas vs. electric — the honest breakdown

There's no single "best" heater; there's the right one for how you use your pool. Here's the straight version:

  • Heat pump: lowest cost to run in our mild climate, ideal for season-long swimming
  • Gas: heats fast, perfect for spas and on-demand warm-ups, higher per-hour cost
  • Electric resistance: simple and affordable up front, best for small spas
  • A pool cover dramatically cuts run-time and cost with any heater type

The heat pump is the workhorse for most SWFL pools because it pulls warmth straight from our warm air very efficiently. If you mainly want a hot spa or quick warm-ups before guests arrive, gas earns its keep. We'll listen to how you actually use the water and recommend accordingly.

Proper sizing matters more than the brand

An undersized heater never quite reaches temperature and runs constantly; an oversized one wastes money and cycles hard. We size based on your pool's surface area and volume, your target temperature, sun and wind exposure, and whether you use a cover. Get the sizing right and the heater is quieter, cheaper to run, and lasts longer.

Spa heaters & repairs on existing units

We also handle dedicated spa heaters and combination pool-and-spa setups, where fast heat-up is the priority. Already have a heater that's struggling? We diagnose and repair existing units — heat pumps and gas alike — fixing failed sensors, ignition and flow faults, refrigerant problems and control-board issues, then give you an honest repair-or-replace call. New installs can be financed through Okinus with $0 down.

Many of our pool-heater customers first met us through their home comfort systems. If you're planning a new build or a system swap, see our AC replacement & installation page, and keep everything running smoothly with an AC maintenance plan.

Pool heater FAQs

Which pool heater type is best in Florida?

For most Southwest Florida pools, an electric heat pump is the sweet spot — it pulls warmth from our mild air very efficiently and keeps a pool comfortable through the long swim season. Gas heaters heat fastest and shine for spas or quick on-demand warm-ups, while electric resistance heaters suit small spas. We'll match the type to how you actually use the pool.

How much does it cost to run a pool heater?

Running cost depends on the heater type, your target temperature, and whether you use a pool cover. Heat pumps are by far the cheapest to operate in our climate, gas heaters cost more per hour but heat fast, and electric resistance units are best for small volumes. We'll walk you through realistic operating costs before you buy so there are no surprises.

Can you repair my existing pool heater?

Yes. We diagnose and repair existing pool and spa heaters — heat pumps and gas units alike — addressing issues like failed sensors, ignition and flow problems, refrigerant faults and control-board failures. We'll give you up-front pricing and an honest repair-or-replace recommendation.

How long does it take to heat a pool?

It varies with pool size, starting temperature and heater type. A properly sized heat pump typically raises a pool gradually over a day or so and then maintains it efficiently, while a gas heater can warm a spa or small pool much faster. Proper sizing and a pool cover make a big difference, and we factor both into our recommendation.

Related Services

Comfort, inside and out

Warm water, all year

Pool & spa heater installation, sizing and repair across Lee, Collier & Charlotte counties. Free service calls for veterans & first responders.