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Home Buying Advice Best Electric Swimming Pool Water Heaters For In-Ground and Above-Ground Pools

Best Electric Swimming Pool Water Heaters For In-Ground and Above-Ground Pools

Best Electric Swimming Pool Water Heaters For In-Ground and Above-Ground Pools

Nobody enjoys swimming in a cold pool. Instead of just waiting for the sun to come out, electric swimming pool water heaters can be used to keep your pool warm and inviting. Having a heater for your pool is actually a lot easier and more accessible than many people may realize – adding that extra element of luxury to your home.

If you want to heat up your tub, or extend the swimming season beyond the warmer summer months, you will need water that is always set at the perfect temperature. Now is the time to get yourself a water heater for it. Here is our guide to the best in-ground swimming pool water heaters out there.

When Are They Used

Choosing the right swimming pool water heater can be tricky, as each situation requires something different. The unit that you get will depend on the climate, the size of your pool, its style (in-ground or above-ground), and available power supply.

Electric swimming pool water heaters can be used to warm in-ground or above-ground pools or hot tubs. These are excellent for all-round use and can be easily utilized in any situation.

You’ll need to choose the best model based on the volume of water that needs to be heated on a continuous basis.

How Do They Work

There are a number of different types and models of pool heaters out there. Electrical swimming pool water heaters are possibly the easiest to use and are very affordable to run.

These heaters work off an electrical circuit and a pump. Basically, you plug the unit in, they create heat through compressing a liquid refrigerant, and they transfer this heat to the tub or pool water. This transfer is done through the pool pump.

Setting up a heater will require installation from a professional electrician. While these systems are not too complex, there is a variety of elements that you will need to understand when installing them. These include the pipe fittings, electrical inputs, and outputs, as well as the best places to install the unit.

The units require an outside temperature that is greater than 45 – 50°F to work. This is because the outside temperature plays a fairly significant role in how well the pool remains heated. While your heater is there to keep your pool warm during the colder months, it should not be extremely cold outside – this will just cool down your pool too much and cause unnecessary loading on the machine.

Before installing the unit, you will need to know if it is suitable for your pool size. You find this out by matching the BTU output to the pool size in gallons. For a 30,000 gallon pool, 120K BTU would be good, while 140K BTU is good for one with a 40,000 gallon capacity.

Benefits of Using A Electric Swimming Pool Water Heater

One of the benefits of using swimming pool water heaters is that they operate at a very low cost. Depending on whether you have your pool covered, and how cold the outside air temperature is, these heaters generally cost between $60 – $200 a month on electrical bills. The selected products that we have reviewed below are highly energy-efficient – falling in the lower end of this.

Electrical heaters are also more environmentally friendly than gas pool heaters. This is because they do not directly burn any fossil fuels, or emit any carbon monoxide. As these machines use a fairly simple design, they are also a lot easier to maintain, requiring far less repair than other heater types found around the home. The average lifespan of these units should be between 10 – 20 years.

These units are safe to use at home, can be used year-round, and are quiet while in use.

Swimming Pool Water Heater Reviews – 2 Top Products On The Market

While there are so many different products out there, we have chosen our two best pool heater picks.

Fibropool FH 220 Swimming Pool Heater Heat Pump

Fibropool FH 220 Swimming Pool Heater Heat Pump
  • 4.85 COP. Best in its class
  • 20,000 Btu/Hr heating capacity
  • Suitable for pools up to 7,500 gallons in coastal climates
  • Suitable for ALL Hot Tubs
  • 240 Volts- 60 HZ American Voltage

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

This sleek and simple unit is ideal for all smaller pools or hot tubs. The Fibropool FH 220 is suitable for pools up to 7500 gallons, and it can also be used for any hot tub.

The heater has a 20,000 BTU/hour heating capacity. This means that it works really efficiently when heating appropriately sized pools. However, it is important to remember that these kinds of heaters do take quite a while to heat up the water – so do not expect instant or fast results from the start.

This is one of the most energy-efficient swimming pool water heaters out there, with a 4.85 COP. Essentially, it the best in its class, barely pulling any electricity. In fact, it should consume less than your actual pool pump.

This Fibropool heater runs off 220 volts-60HZ USA voltage heat and cool modes. Included with the unit are union connectors and hose adapters for 1 ½” PVC plumbing, or 1 ½” or 1 ¼” hoses. This heater has a footprint size of 36” x 16”, weighing in at 100 lbs.


A great benefit of this water heater is how simple it is to install. As long as you have the right pipe fittings (unfortunately the pipe adapters are not a common US size, but you can easily find the right connectors at any hardware store), the unit is quick and easy to put into place. This heater also looks good, and it hardly makes any noise when running – meaning that you can put it just about anywhere around your yard.

There’s a really handy digital panel for temperature control monitoring and settings. This gives you quick access to all of the unit controls – making it a very easy unit to operate.

Overall this is one of the best swimming pool water heaters for any smaller pool or hot tub. You get great results at significantly low energy usage. It is also easy to install, and easy to use. Your swimming or hot tub season can now be extended to more than simply the summer months with the Fibropool FH 220 swimming pool heater heat pump.

What We Like

  • This unit is highly energy efficient
  • Very easy to install
  • Has a useful digital control panel
  • Operates at a very low cost
  • Keeps your pool perfectly heated through the day and night

Minor Drawbacks

  • The pipe adaptors are not a common US size
  • It takes quite a long time to heat up your pool
Fibropool FH 220 Swimming Pool Heater Heat Pump

Fibropool FH055 In Ground Swimming Pool Heater

FibroPool FH055 Swimming Pool Heat Pump


If you are looking to keep your pool warm throughout the year with the ultimate pool heater, then look no further than the Fibropool Fh055. This unit combines simple features with high quality, impressive functionality – making it the ideal choice to keep your water invitingly warm as soon as temperatures start cooling down outside.

The Fibropool FH055 can be used for larger pools. This large-capacity heater has an impressive output of 55,000 BTUs. This means that it is rated to heat above ground pools that are up to a 21’ round or a 15’ X 30’ oval size. Furthermore, it will also work on in-ground pools up to 10 000 gallons.

In terms of energy efficiency, this heater really scores high. This unit uses a Copeland high-pressure differential compressor, as well as a titanium heat exchanger. Through these quality features, the heater has a maximized energy efficiency of 5.92 COP. This means that it will produce a 5.92x equivalent of heat for every dollar of electricity used.

This heater runs off a 12 gauge 220-volt circuit and has 1 ½” compression fittings. The unit is really easy to install and will take no time to get up and running.


One of the major highlights of this pool heater is how durable it is. The unit is housed in an all-metal, enamel-coated case. This means that you can place it outside in the sun or rain, and it will give you a really long life withstanding the elements. This unit also looks great with its simple design, making it easy to incorporate into your yard aesthetics.

The Fibropool FH055 comes with an easy set digital display pad. This makes adjusting the different settings and temperatures simple! You can even extend this feature to a different place, allowing you to access the heaters controls wherever you want them to be.

This unit is also more eco-friendly. Being designed with the most energy-efficient pump available, the Fibropool FH055 offers a clean and efficient heating solution.

What We Like

  • This is an energy-efficient product
  • Sleek and durable design
  • Quick and easy to install
  • Easy to control through the digital pad
  • Keeps larger pools warm

Minor Drawbacks

  • Takes pretty long to heat up


Final Thoughts

Electric Swimming pool water heaters are a simple solution to keeping the water perfectly warm throughout the year! These products are actually so easy to use and install, with minimal operating costs. Owning a unit like this will allow you to extend the swimming season, having your pool ready and inviting whenever you feel like taking a swim!

These electric heaters come with many advantages, and they will definitely take your pool to the next level of luxury. As long as you choose the right sized heater for your needs, your pool will become your new favorite place to be!

Prices pulled from the Amazon Product Advertising API on:

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