Best Pool Heater – Most Efficient Top Rated Solar, Natural Gas and Electric Reviews

Everyone loves the swimming season when they can swim in a pool. It helps you to get relaxed as well as do some exercise. During the winter, the water temperature gets freezing. Hence, it is not possible to swim in the pool.

People spend hundreds of dollars on maintaining their pool for summers. They buy the best chemicals, shocks, and safety accessories like handrails. However, they forget that the pool will not be in use in the winter season. Therefore, during this season, most pools get damaged. You may face issues like cracks, corrosion, and many more. Thus, if you use the pool in the winter too, then its durability will eventually decrease.

Pool heaters like the Universal H-Series Low Nox Gas heater are the most efficient method that enables you to use the pool outside of the regular swimming season. Most of the best pool heaters are reliable, easy to use, and effective. As the name suggests, a pool heater increases the pool water temperature.

Best Pool Heater

There are hundreds of pool heater companies in the market. Each of these claims to be the best in the market. Hence, it can be challenging to select the best pool heater. To help you with this dilemma, here are the best pool heaters on the market.

#1. ECO smart electric water heater (Best energy efficiency) (Editor’s choice)

Some of the features of the product are

  • Energy efficient
  • Tankless electric heat
  • Fast heating

This pool heater is an excellent combination of technology and requirements. This is the reason why we chose it for our list. Most of the pool heaters on the market consist of a water tank. Due to this tank, it takes more than five minutes to heat your pool. However, this pool and spa heater has been designed to give warm water immediately. It can provide up to two gallons in just two minutes. Hence, this pool and spa heater is high-speed and reliable.

The most common problem that people face with electric pool heaters is their power consumption. Standard electric pool heaters usually consume a lot of electricity. This affects your budget in the long run. Do not worry. This pool and spa heater is one of the most power-efficient heaters on the market. Therefore, it will not affect your pocket in any way.


  • Heats quickly
  • Consumes less energy
  • Easy to install


  • Moderate durability

#2. ECO smart 18 water heater (Best durability) (Honorary mention)

Some features of the product are

  • Easy to use
  • Tankless water heater
  • High durability

If you are looking for a compact water heater, then this might be the one. This product does not have a tank. Thus, it provides warm water quickly. It can provide up to 2.5 gallons within a minute. Hence, you do not have to keep it on for minutes to get the desired results.

You can also change the temperature by using the digital meter installed in the product. You just have to turn the knob and adjust the temperature. When you buy a pool heater, it might work perfectly for the initial months. However, after some time, there are chances that it may require some servicing. During this time, the quality of customer care services matters a lot.

If a company offers good customer care, then your issue will be resolved quickly, and the servicing will be transparent. However, if the customer care service is of low-quality, then it may take weeks to get your issue solved. There are even instances where the issues are not solved. Hence, a company should provide high-quality customer care as with this product.


  • Compact design
  • Easy to use
  • Energy-efficient
  • Highly durable


  • Not suited for all types of water

#3. Pentair natural gas pool heater (Best gas heater)

Some features of the product are

  • Powered by gas
  • Competent design
  • Easy to use

Many people prefer using a natural gas pool heater rather than using electric heat to warm their pool. There are various reasons for it. A gas pool heater can usually heat faster than a normal electric heater. However, gas pool heaters are a bit costly compared to the electric pool and spa heaters. The Pentair natural gas pool heater is one of the best natural gas heaters on the market at present. It offers a compact design, due to which it can be used as a pool and spa heater.

The product also comes with a manual knob to control the gas and temperature. The product is good for pool heating, however, you may face some issues with the product. You may not find the quality of the product up to the mark. There are instances when the gas pool heater has broken down within six months. You may also not find customer care responsive. This can be annoying if you face a problem with your gas pool heater.


  • Compact design
  • Ideal pool and spa heater
  • Manual temperature control


  • Low durability

#4. Eco-Smart 27 electric water heater (Best remote control)

Some features of the product are

  • Remote controlled
  • Digital thermal control
  • Easy to use

If you are looking for a pool heater that has the most advanced technology, then this might be the one. You can control the heater using the remote provided with the kit. You can even change the temperature using this remote. You can even give a command to the pool heater through the digital meter in it.

The product heats within a few minutes. Hence, you do not have to wait for a long time for the pool to get warm. The customer care service for this product is extremely responsive. Therefore, you do not have to wait for weeks to get your issues fixed. Irrespective of the time you use the heater, the product is highly energy efficient. Therefore, it will not affect your budget in the long run.


  • It can be controlled by remote
  • Consumes less energy
  • Easy to use and install


  • Moderate durability

#5. TC Electric water heater with automatic control (Best safety)

Some features of the product are

  • It has automatic temperature control
  • Power cut-off for safety
  • Manual controls

Are you looking for a pool heater that offers the highest safety? This pool heater has outclassed every product on the market in terms of safety. The design of the product is moderately compact. Therefore, it is not the smallest design on the market.

The product comes with an in-built automatic power cut-off under two conditions: either when the pressure is low or the electricity is high. This protects you from the probability of getting shocked in the pool. The highest temperature you can set in this product is 55 degrees Celsius. The pool heater automatically shuts down when the temperature is too high. Do not worry; you do not have to restart it. It will restart automatically.

The system has been programmed to keep an eye on every part of the heater. If the software observes any flaw, then the machine turns off immediately.


  • Intelligent safety system
  • It can be controlled manually
  • Easy to use


  • It needs a cool-down period

#6. Pentair Master temp gas heater (Best affordability)

Some of the features of the product are

  • Manual control
  • Two outlets
  • Moderate heating

The budget is always an important factor to keep in mind while shopping. Everybody wants to select items that fit their budget. Similarly, you may be looking for an affordable pool heater. Well, your search is over. This product is one of the cheapest gas pool heater options with high-quality performance.

You can change the temperature through the control panel on the machine. It also has two outlets designed for better performance. Many gas pool heater products on the market face the issue of over-heating. This is usually observed when the pool heater is used continuously without a break. Many people have observed damage to the pool heater due to over-heating of the heat exchanger. Hence, it is necessary to select a pool heater that has some safety measures for this condition.

This pool heater comes with safety measures. The motor inside the machine keeps rotating the flow of water to keep the machine cool, although you may not be satisfied with the quality of the body of the machine. It has been made from moderate quality materials. Thus, it still has a scope for improvement. The maximum temperature limit of the heat exchanger is low compared to others on the market. This machine can be highly beneficial for those who want to swim in moderately warm water.


  • Water flow safety system
  • Manual control
  • Affordable


  • Moderate quality material
  • Maximum temperature limit is low

#7. Raypak Digital natural gas heater (Best digital heater)

Some features of the product are

  • Offers a combination of natural gas and electronics
  • No noise
  • High-quality material

Many people get confused between an electric heater and a low NOx gas heater like the Universal H-Series or similar. We understand that. Each has some merits as well as demerits. Therefore, choosing between them can be tricky. However, what if you could get the merits of both the heaters in one? Yes, you read that right. This product has been designed as a balanced combination of both electric and gas pool heater features.

It offers you a digital panel through which you can give commands to the heater, like changing the temperature. However, the primary fuel of the heater is natural gas. The overall construction of the body is sturdy. So, there are no chances that the body corrodes or leaks over time. Though the product offers fine durability, we would recommend you to maintain it frequently. This will prevent corrosion and will increase the durability of the product. The product creates negligible noise during use and is a low NOx device. It’s also inexpensive compared to the Universal H-Series units. Despite these advantages, some people might face issues regarding its size. It is almost double in size compared to a standard pool or spa heater.


  • Combination of science and nature
  • Sturdy body
  • Easy to use


  • Large size
  • Requires maintenance

#8. VEVOR Electric Pool heater (Best simplicity)

Some features of the product are:

  • Automatic cut-off when overheated
  • Simple and effective design
  • Digital thermoset
  • Easy to use

Sometimes it is good to keep things simple. It makes things clear and easy to understand. Similarly, if you are looking for a pool heater that offers all the basic features, then this might be the one. The product has a design similar to a cuboid. It has two water outlets, and a digital control panel to give a command to the machine.

The electric heat exchanger of the machine is slow but consistent. The product has been designed such that the outlets do not choke with ions. There are various instances when water-based ions have damaged a heat exchanger. However, you do not have to worry about ions with this product.

It even has a self-defense mechanism. Most pool heater owners face the problem of overheating. Though overheating can happen sometimes, frequent overheating can damage the heat pump. Thus, the product has been installed with software that keeps checking on every part of the heat pump. If any flaw is observed, the software forces the machine to shut-down. Therefore, you get an alert of overheating for your heat pump.


  • Fine quality material
  • Automatic shut down on overheating
  • Digital display and controls
  • Easy to use and install


  • Moderate durability of the product

#9. SOLARPRO Curve pool water heater (Best solar heater)

Some of the features of the product are

  • Eco friendly
  • Easy to install
  • Easy to use

If you are looking for an eco-friendly solar heater for pool heating, then you will not get better than this one. The main purpose of a solar pool heater is to convert solar energy into electrical energy. This electrical energy can be used to power a heater. Thus, a solar pool heater is a convenient way to heat your pool.

This solar pool heater has adjustable arms with it. Therefore, you can adjust their inclination as the climatic conditions change. This solar pool heater can heat up to 8000 gallons of water within a week. There might be chances that your pool is bigger than that. However, you can heat large pools easily by using multiple identical solar heaters.


  • Easy to maintain
  • It has simple instructions to use


  • It depends on uncertain climatic conditions

#10. Universal Solar pool heater (Best DIY solar kit)

Some features of this product are

  • Do it yourself solar kit
  • Durable solar panels
  • Easy to use

Usually, we need professionals to install solar panels. However, this solar kit has been designed such that even you can install it. You just have to follow the procedure mentioned in the manual. The solar panels have been made from pure extrinsic semiconductors. Therefore, the absorption of photons happens without any hindrance.

Therefore, you will get the highest amount of electricity from this product as compared to other heat pumps on the market.


  • Easy to install
  • Easy to use
  • Durable panels


  • Sensitive connections and nodes

Buying Guide for Pool Heaters

Have you wondered why many people fail to get a product meeting their expectations? Yes, because they are not aware of the crucial factors to look for in a good heat pump. However, we will not let that happen to you. Here are the most important tips for buying a pool heater.

Keep your electric pool heater requirements in mind

This is the first step to filter out the top pool heaters on the market. We recommend you choose a heater as per your requirements. Here are some examples that will make things clear for you.

Want a cost-efficient pool heater? 

In today’s era, most people try to select cost-effective products. They choose items that do not affect their budget in the long run. If you are looking for cost-effective products like a pool pump or heat pump, then we would recommend you try the solar pool heat kits. These pool heat kits require an initial investment, and they provide quality service for years.

Want a durable pool heater?

Maybe you are looking for a pool heater that you could use in a pool or spa. There are very few pool heat pumps in this category, as they need to be extremely sturdy. We would recommend you to try the low NOx natural gas heat pumps. They are the most basic version of gas pool heaters you can get, but they are incredibly sturdy and reliable. There is even no limit on the max temperature in these gas pool heaters.

Want a modern pool heater for a current pool?

Maybe you believe in advanced technology. You are looking for a pool heater that could add charm as well as quality to your pool during the swimming season. In this case, we would recommend you to try the electric pool heat pumps. Though they are not very sturdy, they are preferred by most due to their quality.

Keep the electric pool heater finances in check

There is a misconception in the market that costly items are of better quality. Most people select a heater or heat pump based on its cost. As they require a high-quality pool heat exchanger, they end up paying more for a product that is not worth it. Therefore, we would recommend you always have a cap on the price of the heat pump. When you do this, you will automatically find the best options that fit your budget. It is also recommended to keep the dimensions of the unit in mind. You need to know the size of the heat pump you want or can be installed at your place.

Best inground pool heaters – Frequently Asked Questions

How to heat a pool? How to heat an above ground pool?

Heating a pool can be challenging, especially in winters. However, you can follow these simple steps to heat the pool.

  • Solar heater – These are highly affordable in the long run. You do not have to pay for electricity, and they are easier to maintain.
  • Heaters – There are usually two types of heaters: electric and gas. Both of these require maintenance and can affect your budget a little.

What is the proper temperature for a heated pool?

There is no perfect temperature that you must obtain while heating the pool. The temperature entirely depends on your expectations. If you are heating water for a spa, then the temperature must be high. However, in the case of pool heat, the ideal temperature is between 26 to 30 degrees Celsius. You can always increase or decrease the temperature by controlling the heat pump. You just have to be comfortable with the pool temperature.

How long does a pool heater last?

It depends on the quality of the heat pump you have selected, and the frequency of maintenance. However, let us assume you have chosen one from our list. Usually, the best units last for more than a year without maintenance. Therefore, if you maintain your heater, it can even last up to 5 years—a critical tip for your heater. Do not start the heater without water. This will surely help you in the long run.

What size pool heater do I need?

There are various sizes of pool heaters available on the market. However, choosing one of them entirely depends on your requirements. If your pool is small, then you may need a small pool heat pump. Usually, 1 BTU of heat is required to heat 10 gallons of water. Hence, now you can easily calculate the ideal size of a heater for your pool.

What is the best pool heater on the market?

Most people find and buy the best pool heaters. However, you will be surprised to know that there is no such thing as a perfect heater on the market. In today’s modern era, there are hundreds of companies that compete with each other. Each company offers the best services it can and tries to improve its services.

Each person has a different expectation and requirement from a heater. Therefore, the perfect heater varies as per your expectations. Maybe you are looking for a heater that could cut your bills. You should try the solar heating kits; they will be the perfect match for you. You may be looking for a modern pool heater. In that case, the electric heaters will surely meet your expectations. There are even chances that you are expecting the heater to be durable. Therefore, natural gas heaters will be the perfect product for you.

What is the best pool heater – Conclusion

Let’s recap everything that we have discussed. Pool heaters like the Universal H-Series Low Nox Gas heater are the most efficient way to heat your pool in winter. These are of three types of pool heating devices, each with its merits and demerits. Now, we are also aware of the best pool heaters on the market. These heaters were selected based on various factors, such as quality, durability, affordability, and convenience. We researched hundreds of pool heaters and ranked them according to their performance. Hence, the list is the result of that hard work.

To make things simpler for you, we decided to rank the top 3 pool heaters on the market, with the same criteria. The first product on our list is the ‘eco-smart 11 water heater.’ This product has a highly compact design, and a digital control panel can control it. The hardware of the product makes it highly energy efficient as compared to others. The second product on our list is the ‘eco-smart 18 water heater.’

It is another product by this company on our list. It has a tankless design, so it heats within a few minutes. The result is also one of the most durable pool heaters on the market. The third product on our list is the ‘Pentair gas pool heater.’ The product offers an easy to use design, which most gas heaters fail to deliver. It has a manual control panel to give commands.

These were the top 3 pool heaters as per our research. However, you are free to consider other products on our list. You can always go through the buying guide and the most frequently asked questions.

They will surely help you select the perfect pool heater. All the best!