10 Best Solar Pool Heaters in The UK

Last updated on 11/05/2025

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Best Choice

9.8

Exceptional

SunHeater

SmartPool WWS421P Sunheater Solar Pool Heater for Above Ground Pools

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Why We Love It

Easy to install.
Maximizes solar capture.
Perfect for large pools.

Main Highlights

Solar Pool Heater - The SunHeater solar pool heating system allows you to capture the free heat from the sun's rays to effectively increase your pool water temperature. It is an efficient and cost-effective way to heat your above ground pool.
EXTENDS POOL SEASON - Your pool's pump pushes the water through the panel's many tubes where it warms up by the sun and then returns to the pool. This system can raise the water temperature down to -9.4°C and extend your bathing season by weeks!
EASY TO INSTALL - This solar pool heater uses your existing filtration system and comes with the necessary plumbing fixtures to connect with flex hoses to a rigid wall above the ground (hard line installations require additional parts not included).
HOSE ON WEB DESIGN - The tube-on-web design allows SunHeater to capture the largest possible sun, maximizing square shots. It provides rigid flexibility allowing the plates to expand and contract with changing temperatures, giving it the strength needed to last.
DIMENSIONS - This solar solar pool heating system includes two 2.4" x 20" panels (80 sq.ft). and is perfect for heating above ground pools up to 80cm round or 45cm x 91cm oval.

Bestway | Flowclear Pool Heater | With Automatic Temperature Regulation

Why We Love It

Creates relaxing swimming environment.
Super easy to use.
Offers luxurious pool experience.

Main Highlights

WARM YOUR POOL: take the chill off your pool to create a relaxing swimming environment by gently heating the water, maximum heater output: 40 C (104 F). Please note pump is required for pool heater to work effectively; heater connects to the pool filter via 32mm hose connection
EASY TO SET-UP & USE: the tactile on/off button, automatic temperature regulation and temperature control panel make heating your pool easier than ever
ADD A TOUCH OF LUXURY: to your swimming experience, our pool heaters help create comfortable water temperatures so you can experience a relaxing swim of heated bliss
SAFE AND RELAIBLE: this pool heater is supplied with a portable residual current device-rated residual operating current not exceeding 10mA
COMPATABLE: with above ground pools with a water capacity between 1,520-17,035 L (400-4,500 gal.) and filter pumps with flow rates up to 3,785 L (1,000 gal.), pool compatibility: 15’ and smaller

Gre SH70 - Solar Heater for Above Ground Pools. Minimum required flow rate: 2m3/h.

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Why We Love It

Suitable for elevated pools.
Requires minimum flow rate.
Connect multiple units online.

Main Highlights

The Gre SH70 Solar Heater is a sustainable and economical option to heat your pool in a simple way. You only need the pool pump to have a minimum flow rate of 2m3/h for proper operation.
We recommend buying 1 unit for every 7m3 of water so that the heating can be efficient. You have the possibility to place several heaters online.
The material of the heater is high quality HDPE which makes it a durable product to withstand the elements. The legs of the heater are made of aluminium and can be adjusted to modulate the height you prefer.
This mode of heating the pool is a sustainable and economical way, since it saves money by not consuming energy. At the same time it is environmentally friendly.
Gre quality and versatility provide specialized accessories for pools of all types. Our line of hoses ensures strength, flexibility and performance, designed to meet the needs of pools and filtration systems of any size.

HENGMEI Firewood Pool Heater Pool Heater with Fire Pool Oven Wood Fire Barrel Stainless Steel Pool Heated Fire Heaters for Swimming Pools Bath Barrel Whirlpool 32/38 mm Connections

Why We Love It

Weatherproof and electricity-free heating.
Quick and efficient heating solution.
Versatile for pool and barbecue.

Main Highlights

Stainless steel fire extinguisher: our pool heaters are weatherproof and do not require electricity. With firewood, briquettes and other natural materials used for heating, a pool can be heated quickly and easily. So you can enjoy swimming in a pleasant water temperature all year round.
Heating quickly: the pool heater is equipped with stainless steel heating tube, more water volume and better heating effect, 2 sizes of the interface can be used, can fit most of the pump water pipe, just need to mount the foot and install the water pipe to use.
Thick heating pipe: the firewood pool heater with fire is made of stainless steel, sturdy, rust-proof and heat resistant up to 300℃. The material is waterproof and moisture-resistant, so it can be used for many years even when stored outdoors.
Versatile: while the pool is heated, this wooden barrel can be heated with charcoal to host a barbecue party. You can enjoy a barbecue party while you swim, and spend a nice time with your family and friends in the garden.
Convenient to use: do not stack flammable objects near the heater for swimming pools heating barrel and keep it away from children to avoid accidents. Please do not use it on the grass (marble, slate or metal plate under the product when you use it for roasting) to avoid sparks and cause fire.

COSTWAY Solar Pool Heater, 3/5/6x0.75m Solar Heating Panels with Complete Connecting Kits, Weatherproof PE Swimming Pool Heating System for 12900L/21500L/25800L Inground & Above Ground Pool (6x0.75m)

Why We Love It

Efficient heating with solar power.
Incredible durability in all weather.
Year-round swimming fun ensured.

Main Highlights

【High-Efficiency Heating】 The 2 pieces of solar collector panels can be connected together, with the total 6m length and 0.75 m width. Therefore, it can transfer the cold water of swimming pool into hot water with high efficiency. And it’s available for pools containing up to 25800L of water.
【All-Weather PE Material】 The solar pool heater is made of built-to-last PE which can still work well in lowest -20°C and highest 90°C. Also, the PE material features outstanding heat absorption, which makes full use of solar energy for optimal heating effect.
【Extend Swimming Time】 This high-grade PE pool heating system will accompany you for a long-lasting time. And with this solar pool heater, you and your family can enjoy the fun of swimming all year around regardless of the weather outside.
【Complete Connecting Kits】 Coming with multiple connecting accessories including end caps, hose clamps, connector hoses, elbow connectors and hose adapters, the solar pool heater can be firmly connected with your water hose.
【Multiple Installing Places】 With roll-up design, the heating collectors are easy to be carried anywhere. And you can use the heating panels for both aboveground and inground pools. Plus, there are multiple places which are ideal for installing, such as the ground, an inclined frame or a roof.

Harnesses solar power for heating.
Efficient and adjustable energy generation.
Perfect for saltwater pools.

Main Highlights

PLEASANT TEMPERATURES: Thanks to solar heating, you can also use the pure power of the sun for your pool. A collector with 10,000 L/h heats the pool water up noticeably without any additional costs. Extend the swimming season with the curved solar heating by Monzana.
EFFICIENT ENERGY GENERATION: The design of the pool heater effectively uses more space than straight solar mats and, with height-adjustable feet, ensures optimal alignment with the sun. You can connect several collectors in series, which increases the effect even more.
FOR SALTWATER: The heating panel of the solar heater is made of weather-resistant HDPE, which is more stable, scratch- and tear-resistant than plastic, which means you can also use it in saltwater pools. The pool heating panels work completely silently.
COMPATIBLE 2IN1 ADAPTER: Thanks to the practical adapter from 32 to 38mm connection diameter, you can easily connect the heat-storing solar collector to pool hoses, bypass sets and sand filter systems. This way, they optimally control the water temperature in the swimming pool.
The legs can be removed for winter storage.

COSTWAY Solar Thermal Pool Heater Dome, Solar Heater Pool Heating System with Stands and Hose Connector, Inground Pool Warmer Equipment (58 x 58 x 32 cm)

Why We Love It

Effective heat retention technology.
Space-saving and adjustable design.
Universal compatibility for pools.

Main Highlights

【Enhanced Solar Absorption】Equipped with a black coil, this water warmer allows it to capture and retain heat more effectively, boosting your pool’s temperature by 3-4℃. The transparent dome cover not only maximizes sunlight penetration but also acts as a protective barrier to prevent heat loss.
【Flexible & Space-Saving Design】Featuring foldable legs, you can easily adjust this solar heater’s angle to capture the optimal amount of sunlight throughout the day. Plus, the wider legs ensure great stability. When the season changes, the 2 legs can be folded down to make storage compact, saving you valuable space.
【Versatile Connection Options】This water heater includes 90° rotatable hose connectors, you can connect up to 3 solar pool heaters in series to maximize heating power. We recommend pairing this solar water heater with a 1-2HP power pump (not included) with a flow rate of up to 16 GPM. It fits joints of 1½” and 1¼”.
【Universal Pool Compatibility】Whether you have an above-ground or in-ground swimming pool, this pool warmer is perfectly suited. When using this heater, ensure the pressure does not exceed 0.8 kPa with a daily air pressure of 35PSI for safe and efficient operation.
【Easy Setup & Complete Package】 In addition to the 2 hoses, this solar power heater also comes with 1 flat gasket, 1 thread nut hose, 1 sealing tape, 2 hose clamps and 2 hose reducers. Everything you need for a hassle-free setup is included in the package. Note: The package comes ready with one heater.

TANGZON Solar Dome Heater, UV-Proof Pool Warmer Single Unit Water Heater with Hose Connectors, Outdoor Solar Heater for Swimming Pool Above Ground (58 x 58 x 32 cm)

Why We Love It

Eco-friendly solar heating solution.
Easy to install and store.
No water leakage concerns.

Main Highlights

DOMED COVER FOR HEAT MAINTENANCE: Fix the transparent cover on the base with solid slot-tight connections, then the solar heater is able to absorb and gather a lot of heat from sunshine, which is exactly called the greenhouse effect. When water flows through internally wounding water pipes, its temperature will rise to create a warmer swimming pool above the ground.
VERSATILE JOINTS & NO WATER LEAKAGE: No need for other components, the solar dome heater is already fitted with 2 hoses (long/short) and other accessories to match your own hose. Besides, included hoses have been upgraded for a better thickness to eliminate water leakages. By the way, it is recommended that you connect the heater to a pump with 1-2 HP for strong water flows.
SEVERAL COMBINED FOR BETTER HEATING: Each domed water warmer is capable to heat up to 10,000L pool volume. Basically, you're suggested to attach 3-4 dome heaters for family use, while this process needs a 3-way valve (not included) as well as a "T" connector (not included). Note: during use, the pressure shouldn't exceed 0.8kPa and the daily air pressure is 35PSI.
EASY TO ASSEMBLE & STORE: The solar heating dome is easy to install with all the accessories and detailed instruction provided. In addition, with the size of 57 x 57 x 22 cm/58 x 58 x 32 cm, this solar thermal pool heater is easy to carry, and there are 2 folding stands for efficient use and space-saving storage when not in use.
IDEAL UV RESISTANCE FOR OUTDOOR EVENTS: The domed solar heater extends swimming seasons for you with warm water. Made of superior PP, PC and PE, it displays perfect UV resistance and is ideal for outdoor activities. No electric or gas needed, the solar heater is definitely an energy-saving and safe addition to your backyard.

Steinbach Speed Solar Sun 49120 Solar Pool Heater Low-Density Polyethylene 0.7 x 3 m for Pools with Capacity of up to 12 Cubic Metres/Hose Connector Diameter 32/38 mm

Free Shipping

Why We Love It

Long-lasting, high quality collectors.
Infinitely extendable for convenience.
Suitable for salt water.

Main Highlights

High quality, long-lasting LDPE collectors
Can be extended indefinitely
Ready to assemble
The solar collector is suitable for salt water
Dimensions: 3.0 x 0.7 metre Weight: 6 kg maximum pressure of 1 bar at 20° C water flow rate at least 2,000 litre/hour. max. 10,000 litre/hour

Perfect for smaller above ground pools.
Effortlessly warms your swimming area.
Simple connection to your pool.

Main Highlights

Suitable for above ground pools 15' or below
Take the chill off your pool
Only suitable for use with round Easy Set or Metal Frame pools
Easy to connect up to your pool
230V Electrical Heater

8.7

Excellent

We scanned 1712 products

We reviewed these offers relevant to the Solar Pool Heaters within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like SunHeater, Bestway, Gre, HENGMEI, COSTWAY, Monzana, TANGZON, Steinbach, Intex, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Solar Pool Heaters in the market, we considered we took a deep dive into 8561 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is SmartPool WWS421P Sunheater Solar Pool Heater for Above Ground Pools. We love many things about this product by SunHeater. What sets it apart from the competition is Easy to install. , Maximizes solar capture. , Perfect for large pools.
The best value product for most shoppers and where user satisfaction is continuously the highest is Bestway | Flowclear Pool Heater | With Automatic Temperature Regulation by Bestway based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Solar Pool Heaters and the best cost-to-value ratio is Intex Pool Heaterat Intex with a % discount.
Our list of the best Solar Pool Heaters is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Solar Pool Heaters in The UK

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We scanned 1712 products

We concluded that: