best above ground pools

10 Best Pool Heaters in 2023

There are many brands of pool heaters in the market and it can be hard to know which one is best for your needs. In this article, we will explore some of the different types you can buy, what to look for when buying it and how those factors might impact your decision-making process.

Pool heaters are a great investment, especially in areas with four seasons or colder weather. There are several things you need to consider before purchasing it so please read on for honest reviews and advice to help you make the right decision and give you tips on picking them in 2023 for your backyard swimming experience. There is no shortage of reliable and efficient items in the market today, but you will also find a lot of options that might not be as good as they seem at first glance (Don’t worry, I’ll tell you which ones!). To avoid spending lots of money on a product that will leave you disappointed, I have prepared this guide to help you in your search for the best pool heaters available in the market:

  1. Hayward 150,000 BTU Pool Heater – Winner
  2. W3H200FDN Hayward Pool Heater 200 000 BTU – Value for money
  3. Hayward W3H250FDN Universal H-Series 250,000 – Best technical
  4. H250FDN 250,000 BTU Pool Heater by Hayward – Cheap
  5. 400,000 BTU Natural Gas Pool Heater by Hayward
  6. Hayward HeatPro Pool Heat Pump
  7. Raypak 266 Pool Heater
  8. Inverter swimming pool heat pump by Raypak
  9. Fibropool Fh120 Above Ground Swimming Pool Heat pump
  10. Fibropool fh055 In-Ground Swimming Pool Heater

1. Hayward 150,000 BTU Pool Heater

This is one of the best natural gas heaters because it is a heavy-duty, stainless steel pool heater designed to heat your pool quickly. This model features an energy-efficient variable-speed blower motor with variable speed control and makes the perfect addition to any inground pool. Its thermal efficiency is 82.70% and it covers a 400ft surface area.


Hayward h150
  • Premium Performance
  • Covers 400 ft surface area
  • Best for In-ground pools 
  • Energy saving
  • Corrosion protection
  • Cupro Nickel Heat Exchanger

The Hayward h150 pool heater is one of the best gas inground pool heaters in the market. Its stainless steel design makes it strong and durable while still making it attractive in any backyard or pool.

  • Fast and efficient heating
  • Easy installation
  • Energy-saving features
  • User-friendly controls
  • Durable and long-lasting
  • Some models may be difficult to troubleshoot
  • Requires regular maintenance
  • Can be loud

Technical Specifications of Hayward h150 Pool Heater

Product Dimensions33.3 x 32.8 x 30.6 inches
Item Weight150 pounds
Item model numberW3H150FDN

2. Hayward Pool Heater 200 000 BTU

The Hayward W3H200FDN Universal H-Series 200000 BTU pool heater is a powerful natural gas heater that comes with a built-in digital control panel to provide you with extra convenience and ease in operating the unit. The digital display helps you to monitor the water temperature inside the pool, and also allows you to set the desired water temperature for heating up your pool water.


Hayward h150
  • Surface coverage area up to 600 ft
  • 200,000 BTU Natural Gas Heater
  • Energy Savings
  • User Friendly
  • Premium Performance

This Hayward 200 BTU heater comes with a durable stainless steel swimming pool heat exchanger that is capable of handling large capacities of water in short periods of time as well as transferring heat effectively from the outdoor environment into your swimming pool. The 200000 BTU pool heater heating element is made of copper material which ensures optimal heat transfer even at low water temperatures. This means that this unit can be used in any season and it will effectively warm up your pool regardless of the weather conditions.

  • Can heat a pool quickly
  • Easy to use
  • Durable
  • Compact
  • Affordable
  • Quite Expensive
  • Can be difficult to install

Technical Specifications

Product Dimensions33.3 x 32.8 x 30.6 inches
Item Weight161 pounds
Item model numberW3H200FDN

3. Hayward W3H250FDN Universal H-Series 250,000 

The Hayward 250 pool heater is one of the most reliable and economical heaters on the market. A powerful, energy-efficient unit, provides both domestic and commercial pool owners with a variety of options to meet their needs. Tough enough for commercial use yet affordable enough for residential applications, the H-Series is available in sizes ranging from 115,000 BTUs to 500,000 BTUs including 300 000 BTUs.


Hayward W3H250FDN Universal H-Series 250,000 
  • Easy to install and use
  • Low impact on the environment
  • 250,000 BTU
  • 750 ft Coverage Area
  • Corrosion prevention technology
  • 83% Thermal Efficient
  • Natural gas connection
  • Spa heater

It uses a combination of gas and electric elements to produce heat. This allows you to use the most economical heating method for your specific requirements. Built with an insulated stainless steel cabinet, this unit is designed for years of reliable operation in a wide range of applications.

  • Energy-saving by reducing pump circulation run time
  • It has low impact on environment
  • User friendly
  • Heavy duty
  • Quite exepnsive
  • Can be difficult to install

Technical Specifications

Product Dimensions33.3 x 32.8 x 30.6 inches
Item Weight171.3 pounds
Item model numberW3H250FDN

4. H250FDN 250,000 BTU Pool Heater by Hayward

The Hayward H250FDN universal h-series pool and spa heater is the perfect energy-efficient heat source for your swimming pool or hot tub. This 250 000 BTU natural gas pool heater offers the perfect combination of power and efficiency in a low Nox model. A special feature about it is that it is easy to read digital function panel that simplifies your operating controls. With its high flow rate of 24 GPM and its extremely efficient fuel consumption, you will be able to lower your heating costs by up to 40%! The Hayward 250k heater offers all these features to ensure you enjoy hours of relaxation.


H250FDN 250,000 BTU Pool Heater by Hayward
  • Hydraulic Efficient and Reliable
  • Polymer header
  • Easy and Professional
  • Environmental friendly
  • Low Noise
  • Spa Heater

The Hayward H250FDN Universal H-Series 250k BTU Pool and Spa Heater is the preferred choice of thousands of pool owners across America. Hayward engineers designed the Universal H-Series line with input from technical experts in the solar heating industry. Combine this experience with advanced manufacturing technology you have the most efficient pool and spa heaters in the world for residential and commercial use. The low NOx design lowers emissions, improves efficiency, and reduces replacement costs.

  • The H250FDN can be used to heat both above ground and inground pools of all sizes.
  • They are designed to be energy efficient and easy to operate.
  • This particular model can be easily installed by most pool owners with basic do-it-yourself skills.
  • With a corrosion-resistant exterior, this heater is built to last for years.
  • Some models may be too powerful for smaller pools- make sure to select the correct size heater for your pool.
  • Can be expensive to purchase

Technical Specifications

Product Dimensions29 x 28 x 24 inches
Item Weight165 pounds
Item model numberH250FDN

5. 400,000 BTU Natural Gas Pool Heater by Hayward

Hayward 400,000 pool heater offers a highly efficient and long-lasting water heating solution for swimming pools. It offers different selections that can be customized for your installation needs. Hayward’s line of heaters is designed with the consumer in mind with their benefits by using either solar power to heat your pool or natural gas power to heat your pool.


Hayward 400 000 BTU Pool Heater Pool Heater
  • 120v Pool Heater
  • 1,200 ft Area Coverage
  • 400,000 BTU
  • Superior Hydraulic Performance and Reliability
  • L.E.D. Digital Control Panel

Originally designed for commercial pools, Hayward’s high-performance 400,000 BTU natural gas pool heater is an ideal choice for most residential home swimming pools. It requires a 120v power source and can be set to automatically heat your pool water between 1,800 and 5,200 watts depending on the outside air temperature.

One of the 120v Heater’s most noticeable features is its compact design which allows it to fit in spaces as small as five feet by three feet. It also comes with simple push-button controls and has protective safety sensors that cut the system off should something be inserted into the pool casing. It is one of the best 400 000 BTU natural gas pool heaters. There is an option for 300 000 BTU also.

  • Reliable and well-made
  • Easy to install
  • Efficient and economical
  • Warms up pool quickly
  • Durable
  • Heavy duty
  • Expensive
  • Requires installation by professional

Technical Specification of Hayward h400fdn

Product Dimensions39.6 x 32.8 x 30.6 inches
Item Weight214 pounds
Item model numberW3H400FDN

6. Hayward HeatPro Pool Heat Pump

Hayward offers legendary performance for your swimming pool with the HeatPro 140,000 BTU heat pump. Designed to serve above and in-ground pools, the HeatPro is an Energy Star-rated unit, so it’s eco-friendly and helps keep heating costs down. The tri-stream nozzle provides optimum performance while the auto start and stop system ensure you only pay when your pool is being heated. The variable speed fan keeps energy costs down while providing consistent circulation, while the variable speed pump helps prevent cavitation damage by adjusting flow according to your pool’s temperature changes


Hayward W3HP21404T HeatPro 140,000 BTU Pool
  • Unparallel durability
  • Ultra Gold corrosion-resistant
  • Heavy duty
  • Stainless steel hardware
  • Titanium Heat Exchanger

The Hayward HeatPro 140,000 BTU pool heat pump for in-ground pools has a variable-speed compressor, which means that it can maintain precise temperature control of your pool, even if the weather is changing. The variable-speed compressor also uses less energy than a single-speed model and includes a high-efficiency rating. Its compact size allows for easy installation (it weighs only 320lbs.) and can be used for both residential and commercial pools

  • Efficient and powerful heating
  • Easy to install
  • Compact design
  • Durable and long lasting
  • Can be used with saltwater pools
  • Some models are difficult to repair
  • Can be noisy
  • Can be expensive to operate

Technical Specifications

Product Dimensions40 x 31.5 x 50 inches
Item Weight150 Kilograms
Item model numberW3HP21404T

7. Raypak 266 Pool Heater

Raypak Heaters are a reliable brand for heaters and have a variety of different heaters. In this blog, I will be writing about the Raypak 266 pool heater and its other variants. I will go into detail about the features, pros, and cons of this heater. The following blog has an informative review on the Raypak 266.


Raypak 266,000 BTU Gas Pool Heater
  • Harsh weatherproof
  • Durable high quality material
  • Heavy duty
  • Easy to install
  • Last for longer years
  • Value for money

Raypak Pool Heaters are products that are used to heat the swimming pool water. Raypak was launched in 1983 by Raypak Heater in response to the growing demand for high-quality, dependable, and efficient pool and spa heaters. This brand is universally recognized as the best value for your money. Nearly every RAYPAK product is designed and manufactured in the United States of America, resulting in superior reliability and quality.

  • Value for money
  • Easy to install
  • Very efficient
  • Fast heating time
  • Low operating cost
  • Durable
  • Shipping in California only
  • Can be little noisy

Technical Specifications

BTU266,000 BTU
ModelRaypak 266,000 BTU Digital Electronic Ignition Propane Heater
Dimensions43 x 31 x 26.3 in
Weight210 lbs
Item model number009217

8. Raypak Crosswind 61,000 BTU Pool Heater

The Raypak Crosswind Electric Pool Heater is a great way to heat your pool. It can be installed in any location, and it will heat the water in your pool quickly and efficiently. The heater uses a special technology that allows it to heat water more effectively than other types. This means you will save money on energy bills while keeping your pool warm year-round.


Raypak Crosswind Swimming Pool Heater
  • LCD Display Panel
  • User Friendly
  • 61,000 BTU
  • Less sound
  • Spiral titanium heat exchanger

The heater also comes with an automatic timer that allows you to set it up for specific times during the day or night. You can choose whether you want the water to be heated for a few hours in the morning, or all day long, or any other time period that works for you. This feature is especially useful if you have children who use the pool during school hours but don’t swim after school because they are busy doing homework or studying for tests. You can make sure they always have access to warm water when they need it most!

  • Efficient and easy to use
  • Well-made and durable
  • Can heat a pool quickly
  • Relatively low cost of ownership
  • Attractive and compact design
  • Some models are noisy
  • Can be difficult to install
  • May require additional pool equipment

Technical Specs

Product Dimensions39 x 26 x 12 inches
Item Weight71 pounds
Item model number017741

9. Fibropool Fh120 Above Ground Swimming Pool Heat Pump

Fibropool fh120 above-ground swimming pool heat pump is a great option for your swimming pool. This device can be used to heat water and circulate it throughout the pool. You can use this device to keep your pool warm in the winter months and cool in the summer months. It is an environmentally friendly product that requires little energy while providing a lot of warmth. It is also applicable for Intex pools.

Fibropool Fh120 Pool Heater

fibropool fh120 above ground swimming pool heat pump


  • Sleek Design
  • Weather Protection
  • Gas-powered
  • Energy Efficient
  • 120 volt plug, 10 Ampere and 60 Hertz Frequency
  • 7500 gallons capacity
  • Titanium Pool Heat Exchanger

One of the best things about the Fibropool fh120 heater is that it allows you to enjoy the water regardless of the season. The unit is designed to heat up water quickly, so you will be able to enjoy a warm and cozy swim in no time at all. This 120v electrical pool heater is especially good for people who live in colder areas and want to swim year-round. You will find it easy to maintain your pool temperature with this device. This product comes with a built-in timer that makes it easy for you to set the temperature you want and not worry about constantly adjusting it as time goes on. All you have to do is set it up, and let your device do the work for you.

  • Cheaper the most pool heaters
  • Installation Instructions and Manual are included
  • It is easy and fast to install
  • It has sleek design
  • It saves energy
  • Can be noisy
  • Requires a dedicated electrical circuit

Technical Specs

Model NameFh120
Package Dimensions25 x 20 x 10 in
Item Weight33 Kilograms

10. Fibropool FH055 in ground swimming pool heater

Fibropool fh055 in ground swimming pool heater is an energy-saving device that can heat your pool water quickly and efficiently during the cold months of the year. Just like any other energy-saving device, it comes with a few benefits and drawbacks that you should know about before making your decision. To help you make an informed choice, this short review will cover everything you need to know about the Fibropool fh055 in ground pool heater.


FibroPool FH055 Swimming Pool Heat Pump
  • 13’500 gallons Capacity
  • Reliable, efficient, and affordable
  • Can heat swimming pool up to 25 degrees
  • 100% Titanium Pool Heat Exchanger
  • 220 Voltage, 17 Ampere
  • Digital Display and Controller

Fibropool fh055 pool heater is designed for indoor/outdoor use only. The fh055 heater comes with a built-in pump that circulates the pool water through the heater and returns it to your pool. This system provides a constant flow of warm water to your swimming pool, maintaining a constant temperature so you can enjoy your pool at any time of day or night. It also includes an optional timer that allows you to set the unit to turn on and off automatically. This versatility helps you save money on your energy bills by letting you enjoy your swimming pool while reducing your energy consumption. There is no doubt that it is a saltwater pool heater.

  • A fibropool fh055 in ground swimming pool heater is easy to maintain
  • Can be as above ground, inground and saltwater pools
  • Easy to install
  • Can be used as above ground, inground and saltwater pools
  • Can be noisy
  • May use more electricity to run

Technical Specs

Model NameFibropool fh055

What to consider when buying a new pool heater

When shopping for a pool heater, there are many factors to consider in order to find the best model for your needs. Here are a few things to keep in mind:

  • The type of fuel the heater uses: Natural gas, propane, and electricity are the most common options.
  • The size of the pool: Heaters are rated by BTU (British Thermal Units), so you’ll need to know the size of your pool in order to calculate the appropriate BTU rating for your heater.
  • The climate: If you live in an area with a colder climate, you’ll need a heater with a higher BTU rating in order to maintain a comfortable temperature in your pool.
  • Your budget: Pool heaters can range in price from a few hundred dollars to several thousand, so it’s important to know how much you’re willing to spend before you start shopping.

Conclusion: Our Verdict

Pool heaters are a necessity to use when you have an inground pool. It is important to know what features should be present in a good quality model so that you can buy one that is not just efficient but also safe for your pool. The size of the heater, the material it covers, and heating capacity are some of the things you need to look into when choosing one. So, after reviewing all the pool heaters we believe Hayward 150,000 BTU is the best pool heater in 2023 because of its performance, quality and robustness.

Modern-day homeowners in Canada require a good, efficient pool heater for all-year-round use of their swimming pools. The market is flooded with a number of different heaters that vary greatly in terms of stability and price. If you are looking to buy a pool heater, there are a few things you should consider.

Frequently Asked Questions:

How long does it take to heat a swimming pool?

Heating a swimming pool is typically done either with heat pumps or a solar heating system. There are different options for the type of equipment and a number of decisions to be made when deciding how to heat it. The duration depends upon the size of the pool.

What is a swimming pool heat exchanger?

A swimming pool heat exchanger is a metal pipe that transfers the heat from the water to its surrounding using wood, natural gas, or propane for heating. The metal used for the construction of these pipes is usually stainless steel or aluminum that resists the corrosion caused by salt or chemicals. It is so named because it acts as an exchange of heat from one medium to another. This how a swimming pool heat pump work.

Why use a heat exchanger in a swimming pool?

One of the most vital elements in a swimming pool is the heat exchanger. If it didn’t have a heat exchanger, it would be empty even on the hottest summer days. This heat exchanger is also called a heat pump and without it wouldn’t be able to warm up during cold and freezing temperatures. It is the best way to heat an indoor swimming pool

How many BTUs are required for the pool heater?

If you are wondering how many BTU you need to heat your pool, the most accurate thing you can do is measure your pool’s total surface area and its depth. Both of these things affect how much energy it takes to heat the water. The larger the pool, the more BTU you will need to make it comfortable.

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