Best Swimming Pool Heaters of 2026

Bryan Hicks Avatar
Bryan Hicks
Last Updated: Jan 10, 2026

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Swimming pool heaters are a great way to extend the swimming season and enjoy your pool even during cooler weather. These heaters come in a variety of types, including gas, electric, and solar-powered options. Gas heaters are typically the most powerful and can heat up a pool quickly, while electric heaters are more energy-efficient and cost-effective in the long run. Solar-powered heaters are the most eco-friendly option, harnessing the power of the sun to heat the water. No matter which type you choose, a swimming pool heater is a worthwhile investment for any pool owner looking to maximize their swimming enjoyment.

At a Glance: Our Top Picks

Intex Solar Pool Water Heater Mat 28685E Cover #TOP 1
Intex Solar Pool Water Heater Mat 28685E
ftb score rating icon 9.8
E-cowlboy 58083 M7 Heater Assembly Cover #TOP 2
E-cowlboy 58083 M7 Heater Assembly
ftb score rating icon 9.7
SolarPoolRepair Universal Repair Kit for Solar Pool Heaters Cover #TOP 3
SolarPoolRepair Universal Repair Kit for Solar Pool Heaters
ftb score rating icon 9.5

Top 10 Swimming Pool Heaters

Intex Solar Pool Water Heater Mat 28685E

ACE - 28685E
white
One Size
Intex Solar Pool Water Heater Mat 28685E Cover
Intex 28685E 47 Inch x 47 Inch Solar Pool Water Heater Mat for 8,000 Gallon Above Ground Swimming Pool with Hose Attachment and Adaptors, Black

Intex Solar Heater Mat 28685E is a great addition to your above-ground pool. Using solar technology, it can raise your pool water temperature by 5 to 9 degrees, depending on the weather. With an 11-square-foot surface area, it efficiently absorbs the sun's rays to heat your pool. This mat is simple to use and cost-effective, compatible with various filter pumps. It comes with hose attachments and adaptors, making installation a breeze. Constructed from durable PVC, it is suitable for pools up to 8000 gallons and can be easily folded for winter storage.

What We Like
Solar Technology
Cost-effective
Easy Installation
#TOP 2

E-cowlboy 58083 M7 Heater Assembly

58083
silver
58083
E-cowlboy 58083 M7 Heater Assembly Cover
E-cowlboy Premium 58083 M7 Heater Assembly Replacement Heater fits for Balboa BP, VS, and EL2001 Control Systems 5.5KW 220 Volt W/Sensors 25-175-1010

The E-cowlboy M7 Heater is designed to fit a wide range of Balboa control systems, making it a versatile choice for many spa owners. It replaces numerous models, so you can be confident it will match your existing setup. The heater is built with durable 316 stainless steel and features a powerful 5.5KW Incoloy Flo-Thru element, ensuring long-lasting performance. Plus, it includes dual sensors for accurate temperature control, which helps keep your spa safe and comfortable. The front-mounted design and included sensors make installation and maintenance straightforward, giving you convenience and peace of mind.

What We Like
Wide compatibility with Balboa systems
Replaces multiple heater models
Durable stainless steel housing
Includes dual temperature sensors
Easy installation and maintenance
#TOP 3

SolarPoolRepair Universal Repair Kit for Solar Pool Heaters

18086_X
SolarPoolRepair Universal Repair Kit for Solar Pool Heaters Cover
Solar Pool Supply Universal Repair Kit for Solar Pool Heaters to Fix Leaky Solar Panel Pool Heaters in Minutes — Original Plugs, 0.25" Diameter

Solve your leaking solar pool heater issues quickly with the SolarPoolRepair Repair Kit. You can fix leaks in minutes without the need for contractors. The kit includes original plugs for 0.188" ID riser tubes, ensuring a reliable repair. Detailed instructions and step-by-step photos make it an easy DIY job. Upgrade to the Combo Pack for added convenience, receiving 10 plugs of each size. SolarPoolRepair guarantees satisfaction, offering advanced solutions for solar pool heating.

What We Like
Quick Leak Fix
Easy DIY Repair
Upgrade Combo Pack Available
#TOP 4

KINEMORA Immersion Water Heater 1500W

B0FWQB6TSJ
Yellow
1pcs
KINEMORA Immersion Water Heater 1500W Cover
Immersion Water Heater 1500W, Portable Submersible Water Heater with Intelligent Temperature Control, Stainless Steel & Dry-Burn Protection, for Bathtubs, Hot Tubs, Pools, Buckets

The KINEMORA Water Heater is a powerful and convenient solution for quickly warming water. With its 1500-watt heating element and stainless steel tube, you can heat water fast—raising 5 gallons from 68°F to 86°F in just 9 minutes, perfect for bathtubs or pools. It also features a smart safety system that automatically shuts off the power if the temperature gets too high, giving you peace of mind whether you use it indoors or outdoors. The built-in LED screen lets you easily set and monitor temperatures from 68°F to 194°F, maintaining your desired warmth without restarting. Plus, its compact and lightweight design makes it easy to carry and store, ideal for home or travel use.

What We Like
Fast heating
Automatic safety shutoff
Adjustable temperature control
Compact and portable
#TOP 5

Generic 58117 M-7 Spa Heater Assembly

Generic
58117
silver
Generic 58117 M-7 Spa Heater Assembly Cover
58117 Spa Hot Tub Heater 2in x 2in W/Stud M-7 Heater Assembly fits for Balboa VS, EL, TS, GS, BP Control Systems, 4.0 KW 220V 26-58104-K with Sensor

The Generic 58117 Spa Heater is a versatile replacement designed to fit Balboa VS, EL, TS, GS, and BP control systems, making it easy for you to find a compatible heater for your spa. It also replaces many other part numbers, giving you a reliable option if your current heater is outdated or damaged. With a total length of 17.63 inches and a 2-inch diameter heating tube, you can be sure it fits well and heats efficiently. Plus, the heater housing is made from premium stainless steel, which means it resists rust and corrosion, providing you with long-lasting, dependable performance for your spa.

What We Like
Wide control system compatibility
Replaces multiple part numbers
Durable stainless steel housing
Precise size for easy fitting
#TOP 6

GANDONE Dual Spa Portable Water Heater

IWH-1000W
Black
GANDONE Dual Spa Portable Water Heater Cover
GANDONE Dual Spa Water Heater, Portable Hot Tub Immersion Water Heater Cast Aluminum Submergible mit Temperature Sensor and Digital Display for Bathtub

The GANDONE Dual Spa Heater is designed with your safety in mind, limiting the current to a safe 10A to prevent electrical hazards in typical home outlets. Its heating element is securely encased in a single-piece aluminum structure, which stops direct contact with water, reducing risk and speeding up heat transfer for quicker warming. Additionally, the aluminum surface is coated with Teflon paint, which helps prevent buildup of impurities, ensuring even heating and protecting the heater from damage. You also get easy control over water temperature with simple buttons, allowing you to set the perfect warmth for your bath or spa experience.

What We Like
Safe current limit (10A)
Aluminum heating structure
Teflon-coated surface
Adjustable temperature control

XCLBTFDC 1800W Portable Immersion Heater

XC-316-Heater-1800W
black
XCLBTFDC 1800W Portable Immersion Heater Cover
XCLBTFDC 1800W Immersion Water Heater Portable Electric Bathtub & Inflatable Pool Submersible Water Heater with Thermostat, GFCI for Bucket, Swimming Pool, Baptistry, Sap, Above Ground Pool & Hot Tub

The XCLBTFDC Immersion Heater offers precise temperature control with its corrosion-resistant probe and easy-to-use thermostat, letting you set the water temperature exactly how you want it. Safety is a priority with built-in GFCI leakage protection and overload safeguards, giving you peace of mind during use. Made from durable 316 stainless steel, this heater warms water quickly and evenly, reducing wait time. Its waterproof design and silicone-wrapped cable ensure safe operation, while the smooth surface keeps cleaning simple. Plus, the silicone gasket protects inflatable pools from overheating damage, making this heater both effective and user-friendly for your water heating needs.

What We Like
Precise temperature control
GFCI and overload protection
Fast, even heating
Durable corrosion-resistant steel
Easy to clean surface
#TOP 8

BOQNZN 1500W Titanium Immersion Heater

YIWHUSN0827
BOQNZN 1500W Titanium Immersion Heater Cover
1500W 120V Titanium Immersion Water Heater Assembly with Sensor, for Bathtub Pool Water Fish Tank Cattle Trough, Portable Electric Heater, Submersible Hot Tub Heater

The BOQNZN Titanium Water Heater offers fast heating with its powerful 1500W titanium rod, allowing you to quickly enjoy warm water without long waits. It features a precise temperature sensor that measures water temperature directly, giving you accurate control within ±0.1°C. This makes it easy to maintain your desired warmth, whether for a bath or other uses. The heater works well in various settings, from kitchen sinks to animal troughs, thanks to its wide temperature range from -40°F to 240°F. Plus, its titanium rod is highly durable and resistant to heat and corrosion, ensuring steady performance over time.

What We Like
Fast heating
Accurate temperature control
Wide temperature range
Durable titanium rod
#TOP 9

JNICEANTAI 3500W 240V Portable Immersion Heater

SUS 316-3500W
Orange 3500W
JNICEANTAI 3500W 240V Portable Immersion Heater Cover
240V | 3500W Portable Immersion Water Heater with Thermostat & GFCI Protection - Bathtubs Heaters - Submersible Pool Heater for Inflatable, Stock Tank, Baptistry, Baptismal, Pools Warmer

The JNICEANTAI Portable Pool Heater is designed to heat small pools, bathtubs, spas, and livestock tanks efficiently with its compact 19.7-inch design, perfect for tight spaces. It features built-in GFCI protection that constantly monitors safety and automatically cuts off power in case of leaks, giving you peace of mind without needing manual resets. The heater uses durable stainless steel tubing that resists corrosion from saltwater and chlorine, ensuring long-lasting use. Plus, its precise thermostat allows you to set and maintain your desired temperature within 0.5°F, so your water stays comfortably warm without constant adjustments.

What We Like
Compact portable design
Built-in GFCI safety
Corrosion-resistant stainless steel
Accurate temperature control
#TOP 10

STPFFOT 11KW Electric Pool Heater 220V

11kw pool heater
White
STPFFOT 11KW Electric Pool Heater 220V Cover
STPFFOT Electric Pool Heater for Inground & Above Ground Pools 11KW 220V, Hot Tub Heaters with Digital Touch Screen, SPA Water Thermostat Swimming Pool Warmer

The STPFFOT Electric Pool Heater is a powerful heating solution for pools up to 1,200 gallons. Since it operates at 220V and 11KW, you’ll need a licensed electrician for safe hardwired installation, ensuring your setup meets safety standards. This heater quickly warms your pool, raising the temperature to 86°F in just 2.5 hours, which means you can enjoy warm water sooner. The smart touchscreen control makes it easy to set the exact temperature and heating duration, giving you full control right at your fingertips. Plus, its durable 316 stainless steel heating tubes provide fast, efficient heating and resist rust, so your pool stays cozy and inviting season after season.

What We Like
High heating power
Touchscreen temperature control
Durable stainless steel tubes
Requires professional installation
Buying Guide Image

All You Need to Know About Buying Swimming Pool Heaters

Introduction

Swimming pool heaters are an essential piece of equipment for any pool owner who wants to extend their swimming season and enjoy the benefits of a warm and comfortable pool. With so many different models and types of heaters available on the market, choosing the right one can be a daunting task. In this article, we will provide some tips and guidelines to help you make an informed decision and find the best swimming pool heater for your needs.

Considerations

Before making a decision, there are a few key factors to consider when choosing a swimming pool heater. These include the size of your pool, the climate in which you live, your budget, and the type of fuel source you want to use.

Pool Size

One of the most important factors to consider when choosing a swimming pool heater is the size of your pool. Heaters are rated by their BTU (British Thermal Unit) output, which indicates how much heat they can produce. The larger your pool, the more BTUs you will need to adequately heat it. As a general rule of thumb, you will need approximately 50 BTUs per square foot of surface area for an inground pool, and 75 BTUs per square foot for an above ground pool.

Climate

The climate in which you live will also affect your choice of a swimming pool heater. In warmer climates, you may not need as much heating power, while in colder regions, a more powerful heater may be necessary.

Budget

Your budget is another important factor to consider when choosing a swimming pool heater. Heaters can range in price from a few hundred dollars to several thousand dollars, depending on their size and features. It's important to consider the long-term costs of operating the heater, as well as the initial purchase price, to ensure that you get the best value for your money.

Fuel Source

Finally, you will need to consider the type of fuel source you want to use for your swimming pool heater. The most common options are natural gas, propane, and electric. Each has its own advantages and disadvantages, so it's important to consider your specific needs and preferences when making a decision.

Types of Swimming Pool Heaters

Once you have considered the factors above, you can begin to look at the different types of swimming pool heaters available on the market. The two most common types are gas heaters and electric heaters.

Gas Heaters

Gas heaters are the most popular type of swimming pool heater, and they are typically more powerful and efficient than electric heaters. They use natural gas or propane as a fuel source, and they can heat a pool quickly and effectively. However, gas heaters can be more expensive to operate than electric heaters, and they require regular maintenance and upkeep.

Electric Heaters

Electric heaters are a less expensive option, and they are relatively easy to install and operate. They use electricity as a fuel source, and they are typically less powerful than gas heaters. As a result, they may not be able to heat a large pool as quickly or effectively. However, they are a good choice for smaller pools, and they are generally more cost-effective to operate.

Conclusion

Choosing the right swimming pool heater can be a challenging task, but it is an important decision that will affect the enjoyment and longevity of your pool. By considering the factors discussed above, you can make an informed decision and find the best heater for your needs. With the right heater, you can extend your swimming season and enjoy the comfort and relaxation of a warm pool.

Frequently Asked Questions (FAQs)

1. What is the most efficient type of pool heater?

Heat pump pool heaters are considered the most efficient type of pool heater. While they may have a higher upfront cost compared to gas pool heaters, they have much lower annual operating costs due to their higher efficiencies. With proper maintenance, heat pump pool heaters also tend to last longer.

2. What is the cheapest way to heat a pool?

The cheapest way to heat a pool includes using solar heating as the primary source, utilizing a heat pump during the warmest time of the day, using pool blankets to control evaporation, and shielding the pool from wind. These measures can help reduce heating costs and make pool heating more affordable.

3. What is the best way to heat a swimming pool?

Boilers are commonly used to heat swimming pools. They can heat the water by passing it through the boiler or by using an external heat exchanger. Commercial boilers can be powered by natural or propane gas and can be installed outdoors or indoors.

4. Is it worth getting a pool heater?

Having a pool heater is beneficial if you want to use your pool year-round. While it may not be necessary in areas with cold winters, having a pool heater allows you to enjoy swimming even during colder months. However, the necessity and benefits of a pool heater may vary depending on your location and climate.

5. What are the cons of a pool heater?

Gas pool heating systems have a few drawbacks. They can add to your utility bill due to the fuel they require, and they are only efficient when used for short periods of time. Additionally, gas pool heaters produce emissions and are not considered environmentally friendly.

6. Does a pool heater use a lot of electricity?

The electricity usage of a pool heat pump is approximately 5 kilowatts per hour per 100,000 BTU. For a general 100,000 BTU pool heat pump, you can expect to use around 5,000 Watts per hour. The actual electricity usage may vary, but it's important to consider the power consumption when operating a pool heater.

7. Is it cheaper to heat a pool with gas or electric?

Electric swimming pool heaters are generally cheaper to operate in the long run compared to gas heaters. While electric heaters may have higher upfront costs and installation expenses, the overall cost of using electric heaters tends to be lower over time.

8. What temperature do you keep a heated pool at?

To keep the majority of swimmers comfortable, set your pool heater's thermostat to a temperature between 78°F and 82°F (26°C and 28°C). Adjust the temperature slightly depending on your climate, with slightly cooler temperatures in hot summers and slightly warmer temperatures in milder climates.

9. Is it cheaper to heat a pool or keep it warm?

Heating a pool to a higher temperature will cost more. Each degree rise in temperature can result in a 15-18% increase in operation cost. While a pool at 88°F may be comfortable, maintaining a pool at 85°F will be more cost-effective in terms of heating expenses.

10. How many hours a day should a pool heater run?

The time required to heat a pool depends on factors such as the volume of water, desired temperature increase, and the size of the heater. On average, it may take around 6 hours for a standard heater (300k BTU) to heat a rectangular pool (16x36) by 10 degrees. It's important to consider these factors when determining the operating hours for your pool heater.

Editor's Notes

During our swimming pool heater research, we found 24 swimming pool heater products and shortlisted 10 quality products. We collected and analyzed 22,320 customer reviews through our big data system to write the swimming pool heaters list. We found that most customers choose swimming pool heaters with an average price of $85.41.

The swimming pool heaters are available for purchase. We have researched hundreds of brands and picked the top brands of swimming pool heaters, including Intex, E-cowlboy, SolarPoolRepair, KINEMORA, GANDONE. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Bryan Hicks Avatar

Bryan Hicks is a professional gardener and a writer who lives in North Texas with his family and his dog. Bryan has spent more than half of his life surrounded by garden products. He has extensive experience in garden makeovers and maintenance and lawn care. His areas of expertise include outdoor decoration, gardening and garden design.