9 Best Pool Heaters 2025 in the UK

The Lay-Z-Spa Heater Pump Unit with Freeze Shield Technology is designed specifically for Bestway Lay-Z-Spa models, making it a suitable choice for users who own these spas. It pumps heated water efficiently and controls the Lay-Z Massage System, adding comfort to spa experiences. The AirJet pump is compatible with all Lay-Z-Spa AirJet models, offering versatility for users with different spa setups.

One notable feature is the Freeze Shield Technology, which helps protect against cold weather, enhancing the heater's climate suitability for places with cooler temperatures. This added protection is valuable for those who wish to use their spa throughout the year, even in colder environments.

With a voltage requirement of 230 volts and operating via mains electricity, it ensures consistent performance without the need for batteries or alternative power sources. The unit weighs 12.52 kilograms, making it relatively easy to handle and install, although users should be prepared for some maintenance, typical of pool heater systems. Made from plastic, it is lightweight but may not offer the durability found in more robust materials.

In terms of cost of operation, users should consider electricity costs as it runs on mains power. Priced reasonably for its features, it ranks well in pool and hot tub accessory categories, indicating positive reception. Ideal for users with existing Lay-Z-Spa setups, this heater pump unit is well-suited for those seeking a straightforward heating solution with added freeze protection. It may not appeal to those looking for high BTU output or intricate energy-saving technology.

The Lay-Z-Spa Hot Tub WiFi Enabled Airjet Plus Pump Pool Heater is designed for all AirJet models, offering convenience with WiFi enabling. This feature allows users to control the pump remotely, adding a layer of ease to its operation. The heater has a notable heating capacity and uses corded electric power, which tends to be straightforward to install and maintain but can be less energy-efficient compared to gas heaters.

The plastic material makes it lightweight at 12.5 kilograms, which is beneficial for easy handling and installation. However, plastic may not be as durable as metal alternatives in long-term use. The heater is suitable for various climates, making it versatile for different regions.

This pool heater is best for users seeking an easy-to-use, lightweight, and remotely controllable option for their AirJet models. However, those prioritizing long-term durability or lower operational costs might need to consider other options.

The Bestway Lay-Z-Spa Filter & Heating Heater Unit is designed for use with several spa models, including Miami, Palm Springs, Monaco, and Vegas. It's a versatile option for those looking to maintain the temperature of their inflatable hot tubs. Weighing 12 kg and measuring 45.01 x 45.01 x 65 cm, it is relatively compact and easy to handle during setup. This heater unit boasts a respectable customer rating of 4.1 out of 5 stars, indicating a generally positive reception from users.

One of the key strengths of this product is its compatibility with multiple spa models, which allows users flexibility if they own more than one type of Lay-Z-Spa. Installation and maintenance are made straightforward, given the product's design for layperson use. However, potential buyers should be aware of ongoing maintenance requirements such as filter cleaning and monitoring the heater's operation.

This heater unit seems best suited for casual spa users who prioritize ease of use and compatibility with existing Lay-Z-Spa models over high energy efficiency or performance in diverse climates.