Best Pool Heaters For Inground Pools (2024 Updated)

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As the summer season arrives, homeowners with inground pools are gearing up to enjoy a refreshing dip in the pool. However, with the changing weather, the water temperature in the pool may not be suitable for swimming. This is where pool heaters come in handy. They help to maintain a comfortable water temperature, extending the swimming season for a few more months. If you are in the market for the best pool heaters for inground pools, here are some key points to consider.

1. Type of Pool Heater: There are three main types of pool heaters – electric, gas and solar. Each has its own advantages and disadvantages. Electric heaters are easy to install and operate, gas heaters are powerful and can heat the pool quickly, while solar heaters are eco-friendly and cost-effective.

2. Size of the Pool: The size of the pool is an important factor to consider when choosing a pool heater. A larger pool will require a more powerful heater to heat the water quickly and efficiently.

3. Energy Efficiency: Look for a pool heater that is energy-efficient and has a high energy factor (EF) rating. This will help to save on utility bills in the long run.

4. Durability and Warranty: Choose a pool heater that is made of durable materials and comes with a good warranty. This will ensure that the heater lasts for many years and you can get it repaired or replaced if needed.

5. Price: Pool heaters come at different price points. Consider your budget and choose a heater that offers the best value for money.

By keeping these key points in mind, you can choose the best pool heater for your inground pool and enjoy a comfortable swimming experience throughout the year.

10 Best Pool Heaters For Inground Pools

1. Hayward W3hp21404t Heatpro 140,000 Btu Pool Heat Pump For In-Ground Pools

The Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump is an ideal choice for in-ground pools that are used regularly and benefit from maintaining an ideal consistent temperature. This product offers economical heating by using the surrounding air to heat the pool, making it more economical than propane, natural gas, and electric heaters for maintaining the ideal water temperature.

One of the standout features of this pool heat pump is its unparalleled durability. The HeatPro boasts Ultra Gold corrosion-resistant technology, providing unparalleled durability, even in harsh coastal environments. The heat exchanger is constructed from titanium, ensuring maximum heat transfer and providing excellent saltwater and chemical corrosion resistance. UV-resistant body panels are impervious to corrosion and deterioration, ensuring longevity and a sleek appearance.

Hayward, a trusted brand with over 80 years of experience, is an industry leader in manufacturing advanced pool equipment. The Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump is no exception, offering superior quality and performance. This product is designed with the latest technology, ensuring that it will provide reliable and efficient heating for your pool for years to come.

In addition to its durability and performance, the Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump is also easy to install and operate. The product comes with clear instructions and is designed for easy installation by a licensed professional. The digital LED control panel makes it simple to adjust the temperature and settings, ensuring that you can easily maintain your desired pool temperature.

Overall, the Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump is an excellent choice for anyone looking for an efficient, durable, and easy-to-use pool heating solution. With its advanced technology, unparalleled durability, and trusted brand name, this product is sure to provide reliable and efficient heating for your in-ground pool, keeping it at the ideal temperature all season long.

2. Raypak 266,000 Btu Digital Electronic Ignition Natural Gas Pool Heater

The Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater is a reliable and efficient solution for those seeking a versatile heating option for their pool. This heater is built to withstand various weather conditions, making it a perfect choice for those living in areas with harsh winters or hot summers.

With its intermittent spark ignition pilot safety controls, the pilot only comes on when there is a call for heat, making it an energy-efficient choice for those looking to save on their energy bills. Moreover, the pilot safety controls ensure that the heater is safe to use, providing peace of mind to pool owners.

One of the standout features of this heater is its space-age material, which ensures that the heater won't retain residual heat after it is turned off. This means that the heater can be installed without the use of costly metal heat sinks, making it an affordable option for those on a budget.

The Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater has a part number of 009217 and a model number of P-R266A-EN-C, making it easy to identify and purchase. However, please note that this item is unable to be shipped to the state of California.

In conclusion, the Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater is an excellent choice for those looking for a reliable, efficient, and versatile heating option for their pool. Its safety controls, energy efficiency, and affordability make it an excellent investment for pool owners in a range of environments.

3. Hayward's W3h250fdp Is A Powerful 250,000 Btu Propane Pool And Spa Heater Designed For In-Ground Pools And Spas.

The Hayward W3H250FDP Universal H-Series 250,000 BTU Propane Pool and Spa Heater is an excellent choice for in-ground pools and spas with a surface area up to 750 ft. It is highly efficient and has a low environmental impact, making it ideal for use in areas where low-NOx emissions are required. The heater delivers exceptional heating performance that can be relied on for years of comfortable swimming and relaxation.

The Universal H-Series is built to last, with exceptional protection against corrosion and premature failure caused by unbalanced water chemistry. This ensures that you get the most out of your investment and can enjoy your pool or spa for years to come. The heater's efficient, industry-leading design reduces circulation pump run time, providing energy savings that can help reduce your pool or spa's operating costs.

The Hayward W3H250FDP is easy to use, with an intuitive front control panel that provides easy operation, service, and maintenance. This means that you can easily adjust the temperature and settings to suit your needs, and perform routine maintenance tasks with ease.

Overall, the Hayward W3H250FDP Universal H-Series 250,000 BTU Propane Pool and Spa Heater is an excellent choice for anyone looking for a reliable, efficient, and easy-to-use heating solution for their in-ground pool or spa. With its premium performance, corrosion protection, and energy savings features, this heater is sure to provide years of comfortable swimming and relaxation.

4. Swimming Pool Heater Thermostat For Pools And Spas Up To 20,000 Gallons, With 85,000 Btu/hr Capacity. Wired To Three-Phase 40a Gfci For Both In-Ground And Above-Ground Pools.

The AYCHLG 85000Btu/Hr Swimming Pool Heater Thermostat is a high-performance heating solution for swimming pools, spa pools, bathtubs, and in-ground pools and spas. With a powerful heating capacity of 85,000 BTU/hr, it is capable of maintaining optimal water temperature in coastal climates where temperatures range from 71.6°F to 122°F (22°C to 50°C).

The heater is suitable for pools up to 20,000 gallons and 200 sqft in-ground pools, as well as 27' round and 18 x 33 oval above-ground pools in areas such as Long Island NY and Corpus Christi TX. If you're unsure about the suitability or performance rating of the heater for your area, you can send your pool size and zip code and get a customized sizing recommendation.

The AYCHLG Swimming Pool Heater Thermostat is designed, engineered, manufactured, and serviced by Coasts, a leading brand in the industry. Coasts products are known for their high quality, durability, and reliability, and this heater is no exception.

The heater is suitable for all hot tubs and above-ground and in-ground swimming pools. It has a power output of 24KW and operates on 60 Hz American voltage. The heater is wired to a three-phase 40A GFCI and must be used with a water pump.

Overall, the AYCHLG Swimming Pool Heater Thermostat is an excellent choice for anyone looking for a high-performance, reliable, and easy-to-use heating solution for their swimming pool, spa pool, or hot tub. With its powerful heating capacity, customizable sizing, and high-quality construction, it is sure to meet and exceed your expectations.

5. Hayward W3h400fdn 400k Btu Natural Gas Pool/spa Heater For In-Ground Pools & Spas

The Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater is a top-of-the-line heating solution for in-ground pools and spas up to 1,200 square feet in size. It is an ideal choice for those looking for a low environmental impact heater, as it meets low-NOx emissions requirements.

With its premium performance, this heater delivers fast and efficient heating for years of comfortable and reliable use. The Universal H-Series features exceptional protection against corrosion and premature failure caused by unbalanced water chemistry, ensuring that it will last for years to come.

This heater also offers a significant energy savings benefit with its industry-leading design that reduces circulation pump run time. This energy-efficient design allows for cost savings on utility bills while providing reliable heating for your pool or spa.

The intuitive front control panel makes it easy to operate, service, and maintain. Users can easily adjust temperature settings and monitor the heater's performance, ensuring optimal comfort and energy efficiency.

In summary, the Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater is a premium heating solution that offers exceptional performance, protection against corrosion, energy savings, and ease of use. It is an ideal choice for those looking for a reliable and efficient heating solution for their in-ground pool or spa.

6. Fibropool Fh055 55k Btu Swimming Pool Heat Pump, High-Efficiency Electric Heater For Above & In-Ground Pools/spas, No Natural Gas/propane Needed.

The FibroPool Swimming Pool Heat Pump FH055 is a high-efficiency, all-electric heater, designed to provide a clean and green alternative to traditional pool heaters that use natural gas or propane. This product is ideal for both above and in-ground pools and spas and is compatible with in-ground pools up to 10,000 gallons and above ground pools up to 21-foot round or 15 by 30-foot oval.

This heat pump is powered by clean electricity, which reduces the harmful environmental effects and cost associated with traditional heaters. It works by moving heat from the air into the water, which not only saves you money but is also a breeze to maintain.

FibroPool heat pumps are meticulously designed to be the most energy-efficient in their class. They utilize high-pressure differential compressors and titanium heat exchangers, which increase efficiency and reduce energy consumption. This means that you can rest comfortably knowing that your family will enjoy years of late-season swimming without feeling a squeeze on your electric bill.

The FH055 features a rugged design, with an enamel-coated steel chassis that is designed to withstand outdoor elements season after season. Its slim profile measures just 16"x40"x24", offering a wide range of mounting options. Installation is also made easy with included 1 1/2 inch compression fittings.

The digital control panel with an easy-to-read display offers convenient temperature setting and monitoring. An optional extension cable also allows you to mount the control panel in a location that works best for you.

It is important to note that, as with all heat pumps, FibroPool recommends using the FH055 in a humid climate down to 50 degrees for best performance. Dry climates are better served by a traditional gas heater.

In summary, the FibroPool Swimming Pool Heat Pump FH055 is an excellent choice for anyone looking for a high-efficiency, all-electric pool heater that is clean, green, and easy to maintain. Its rugged design, energy efficiency, and easy operation make it an ideal choice for both above and in-ground pools and spas.

7. Fibropool Fh055 55,000 Btu Swimming Pool Heat Pump – Efficient Electric Heater For In/above Ground Pools & Spas, No Gas Required.

The FibroPool Swimming Pool Heat Pump – FH055 55,000 BTU – is an all-electric heater for above and in-ground pools and spas that provides high efficiency without the need for natural gas or propane. This clean and green solution is powered by electricity, which reduces harmful environmental effects and costs associated with traditional heaters.

The FH055 is compatible with in-ground pools up to 10,000 gallons and above-ground pools up to 21 feet round or 15 by 30 feet oval. It is recommended for use in humid climates down to 50 degrees for best performance, while dry climates are better served by traditional gas heaters.

Utilizing high-pressure differential compressors and titanium heat exchangers, FibroPool heat pumps are meticulously designed to be the most energy-efficient in their class. The FH055 is no exception, and it ensures that users can enjoy late-season swimming without feeling a squeeze on their electric bill.

The enamel-coated steel chassis of the FH055 is designed to withstand outdoor elements season after season. Its slim profile measures just 16"x40"x24", offering a wide range of mounting options. The heat pump conveniently installs with included 1 1/2 inch compression fittings.

The digital control panel of the FH055 has an easy-to-read display that offers convenient temperature setting and monitoring. An optional extension cable allows users to mount the control panel in a location that works best for them.

Overall, the FH055 is a reliable and energy-efficient solution for those looking to heat their pools and spas without relying on natural gas or propane. Its rugged design and easy operation make it a great choice for families who want to enjoy their pools and spas late into the season.

8. The Ecosmart Smart Pool 27 Is A 27kw Electric Tankless Pool Heater With Self-Modulating Technology, Operating At 240 Volts And 112.5 Amps.

The EcoSmart SMART POOL 27 Electric Tankless Pool Heater is an energy-efficient solution for heating your pool water. This heater is designed with a self-modulating technology that adjusts the power output to match the pool's needs, reducing energy consumption and saving you money.

The flow activation feature ensures that the heater only operates when water is flowing through it, preventing any unnecessary energy usage. This also means that the EcoSmart Pool Heater is compact and easy to install for both new and existing pools.

The digital temperature control allows you to set your desired temperature in increments of 1-degree, ensuring that your pool water is always at the perfect temperature. Once set, you can forget about it, as the heater will maintain the temperature automatically.

The EcoSmart Pool Heater is also compatible with the EcoSmart Remote Control, which allows you to adjust the temperature and monitor the heater's performance from the comfort of your home.

With a wattage of 27,000, this heater is powerful enough to heat pools up to 15,000 gallons. It can be used as an alternative to or booster to a heat pump, providing a reliable source of heat for your pool water.

The activation flow of 12 +/- 2 GPM ensures that the EcoSmart Pool Heater is efficient and effective in heating your pool water, without wasting any energy. This makes it an ideal choice for pool owners who want to save money on their energy bills while enjoying a warm and comfortable pool all year round.

In summary, the EcoSmart SMART POOL 27 Electric Tankless Pool Heater is an excellent investment for any pool owner who wants an energy-efficient and reliable source of heat for their pool water. With its compact design, digital temperature control, and self-modulating technology, this heater is easy to install and operate, providing you with a comfortable and enjoyable swimming experience.

9. Doel 19000 Btu Electric Pool Heater With Titanium Heat Exchanger For In-Ground/above-Ground Pools. 5.56 Kw Capacity And 220-240v 60hz Power Supply.

The DOEL 19000 BTU Swimming Pool Heat Pump is a high-performance electric pool heater suitable for small above-ground pools up to 6600 gallons and in-ground pools up to 4,226 gallons. This heat pump solution is designed to provide efficient and easy heating for your swimming pool, making it ideal for both above ground and inground swimming pools with a 2 inch/50mm water hose connection.

One of the key features of this heat pump is its innovative flat-tube titanium heat exchanger, which provides a 30% higher heat exchanging efficiency compared to spiral tubes. This results in faster and more efficient heating of your pool water, which means you can enjoy your pool for longer periods of time.

The DOEL heat pump also boasts a unique design that combines efficient rotary compressors with a low-noise fan, resulting in extremely quiet operation. The galvanized steel body panels have a cute and graceful design that is impervious to rust and deterioration.

To ensure optimal safety and protection, this heat pump comes with an advanced protection system that includes auto electrical-leakage and low-voltage switches, high and low-temperature protection, and compressor discharge over-high protection. Additionally, it features a child lock to ensure that your little ones are safe around the pool.

The DOEL 19000 BTU Swimming Pool Heat Pump requires 220-240 volts and 60 HZ for USA electricity. It also comes with an 11.5 foot long power cable with a standard USA plug. If you have any questions or concerns about the plug, the DOEL team is always available to help.

In conclusion, the DOEL 19000 BTU Swimming Pool Heat Pump is a premium quality product that provides efficient and easy heating for your swimming pool. Its unique design, high-performance features, and advanced safety and protection systems make it a must-have for any pool owner.

Best Pool Heaters For Inground Pools FAQs

How do I choose the right pool heater for my inground pool?

Choosing the right pool heater for your inground pool involves several factors, including the size of your pool, your budget, and your preferred heating method. The size of your pool will determine the heating capacity required for your heater, so ensure you choose a heater that can efficiently heat your pool size. Your budget will also determine the type of heater you can afford, as different heating methods have varying costs. For instance, gas heaters are more expensive to buy and install, but they have lower operating costs. On the other hand, electric heaters are cheaper to install but more expensive to run. Finally, consider your preferred heating method, whether it's gas, electric, or solar, and choose a heater that aligns with your preferences. By considering these factors, you can choose the right pool heater that meets your needs and budget.

What are the most efficient pool heaters for inground pools?

The most efficient pool heaters for inground pools are usually gas heaters, heat pumps, and solar heaters. Gas heaters are the most common type of pool heater and can quickly heat a pool to the desired temperature. They are powered by either natural gas or propane and have a high heating output. Heat pumps are also a popular option as they can heat a pool efficiently using electricity. They work by extracting heat from the surrounding air and transferring it to the pool water. Solar heaters are the most environmentally friendly option as they use energy from the sun to heat the pool water. They are also the most cost-effective in the long run, although their effectiveness can be limited by weather conditions. Ultimately, the most efficient pool heater for an inground pool will depend on factors such as the size of the pool, location, and personal preferences.

What are the pros and cons of different pool heater options for inground pools?

There are several options available for pool heaters for inground pools, each with their own set of pros and cons. Gas heaters are efficient and can quickly heat up the pool, but they require a gas line and can be expensive to operate. Electric heaters are easy to install and operate, but they are not as efficient as gas heaters and can also be costly to run. Heat pumps are energy-efficient and eco-friendly, but they can take longer to heat up the pool and may not work as well in colder climates. Solar heaters are the most eco-friendly option and can be cost-effective in the long run, but they rely on sunlight and may not work as well in cloudy or rainy weather. Ultimately, the best option will depend on factors such as budget, climate, and personal preferences.

What are the top-rated pool heaters for inground pools?

Top-rated pool heaters for inground pools include the Pentair 460736 MasterTemp, Hayward H400FDN Universal H-Series, and Raypak 406A Digital Natural Gas Pool Heater. These heaters are highly efficient, durable, and provide fast and consistent heating for inground pools. The Pentair 460736 MasterTemp is a high-performance heater that heats water quickly and efficiently, while the Hayward H400FDN Universal H-Series is designed to be energy-efficient and eco-friendly. The Raypak 406A Digital Natural Gas Pool Heater has a compact design and is easy to install and use. Additionally, these heaters come with advanced features such as digital controls, remote control, and self-diagnostic systems, making them convenient and easy to operate. Overall, these pool heaters are high-quality products that are well-suited for inground pools and are highly recommended by professionals in the industry.

What is the best type of pool heater for an inground pool?

The best type of pool heater for an inground pool depends on several factors, including the climate, the pool size, and the desired heating speed. Gas heaters are popular as they heat the water quickly and are efficient in colder climates. Electric heaters are also efficient but take longer to heat the water, making them ideal for warmer climates. Heat pumps are the most energy-efficient option, but they are expensive and require a lot of space. Solar heaters are eco-friendly and cost-effective, but they are not suitable for all climates and may require a backup heater. Ultimately, the best type of pool heater for an inground pool depends on your specific needs and preferences. It is recommended to consult with a professional pool contractor to determine the best option for your pool.

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