Updated:28 September 2026
Rank 1-11 of the best Pool Heaters
Our recommendation Price Customer rating
1. Comparison winner
SmartPool Sunheater Solar Pool Heater WWS421P
SmartPool Sunheater Solar Pool Heater WWS421P
Available immediately
free shipping
  • effectively increases pool water temperature using solar energy
  • suitable for above ground pools up to 2.4 metres round or 1.52 x 4.42 metres oval
  • easy installation using existing filtration system with necessary plumbing fixtures included
Our rating
9,6
very good
2. Best value
Monzana Solar Collector Pool & Water Heater 112x55x14cm
Monzana Solar Collector Pool & Water Heater 112x55x14cm
Available immediately
free shipping
  • solar heating efficiency uses the sun to warm pool water with a rate of up to 10000 litres per hour in direct sunlight
  • compatible with different pool sizes by allowing several collectors to be connected in series to increase heating capacity
  • easy setup for above ground pools or paddling pools with included accessories such as 2x stainless steel hose clamps, 1x 1.2 metre hose, 2x screws, 2x connectors and assembly instructions
Our rating
9,6
very good
Intex 56684BS Above Ground Pool Heater
Intex 56684BS Above Ground Pool Heater
Available immediately
free shipping
  • efficient solar heating with a 2.2kW output for maintaining pool temperature
  • compatible with round Easy Set or Metal Frame swimming pools up to 12ft, suitable for water volumes up to 12,500 litres
  • easy to set up and includes fittings, clamps, and hoses for convenience
Our rating
9,6
very good
4. Bestseller
Intex Pool Heater
Intex Pool Heater
Available immediately
free shipping
  • efficient solar heating for longer pool use in early and late summer
  • compatible with above ground pools from 8ft to 12ft diameter
  • simple connection in line with pool cartridge filter pump
Our rating
9,6
very good
Bestway 2800W Pool Heater
Bestway 2800W Pool Heater
Available immediately
free shipping
  • efficiently heats pool water with 2,800 watts
  • suitable for pools ranging from 1,520 to 17,035 litres
  • comes with a 1 metre hose and two hose clamps
Our rating
9,6
very good
Electric Pool Heater
Electric Pool Heater
Available immediately
free shipping
  • compatibility with pool size suitable for round Easy Set or metal frame pools up to 15 feet (4.57 metres) in diameter
  • easy setup and storage easy to hook up to a new or existing pool filter system and compact for storage when not in use
  • hose connection options connects to most pool filter systems using standard hoses for easy integration
Our rating
9,5
very good
Portable 2000W Pool Water Heater with 304 Stainless Steel and Digital LCD Thermometer – Heats 5 Gallons
Portable 2000W Pool Water Heater with 304 Stainless Steel and Digital LCD Thermometer – Heats 5 Gallons
Available immediately
free shipping
  • Suitable for buckets, basins and small swimming pools
  • Lightweight and compact design with a long power cord and built in handle for easy setup and convenient storage
  • Enhanced safety features include a stainless steel guard to prevent direct contact with the heating element and automatic shutdown to prevent overheating and dry burning
Our rating
9,3
good
200+ purchases last month
High Precision Heat Pump Pool Heater 15KW, 220V
High Precision Heat Pump Pool Heater 15KW, 220V
Available immediately
free shipping
  • solar heating efficiency varies from 5.5KW to 18KW based on pool size ensuring optimal performance
  • suitable for pools with corresponding pump sizes to prevent overheating and damage
  • easy setup and storage with water pump and thermostat sequence for efficient operation
Our rating
9,3
good
Intex Pool Solar Heating Mat 28685
Intex Pool Solar Heating Mat 28685
Available immediately
free shipping
  • solar heating efficiency increases pool water temperature by approximately 3-5 degrees celsius using a 1 square meter surface to absorb sunlight
  • compatible with above ground pools with a capacity of less than 30,280 litres
  • easy setup and storage due to simple attachment and draining system
Our rating
9,1
good
Intex Eco-Friendly Solar Heating Mat #28685
Intex Eco-Friendly Solar Heating Mat #28685
Available immediately
free shipping
  • solar heating uses sunlight to warm the pool water and can raise the temperature by 3 to 5 degrees celsius
  • compatible with pools up to 8,000 gallons (30,280 litres) in capacity
  • easy to drain and store after use
Our rating
9,1
good
VCYEX Electric Water Heater for Paddling Pools – White, Adjustable 16–43°C, 8.6 × 5.8 × 2.9 in
VCYEX Electric Water Heater for Paddling Pools – White, Adjustable 16–43°C, 8.6 × 5.8 × 2.9 in
Available immediately
free shipping
  • suitable for small to medium water enclosures including folding bathtubs inflatable baths portable baths and plunge pools
  • easy setup and storage with compact size and three placement methods hanging upright or lying flat plus adjustable hooks for bath edge thicknesses
  • water and electricity separation keeps the heating element isolated from the main body for safer operation immerse the pipeline in water before use to prevent dry heating and in case of error codes E1 E2 or E3 cut the power and wait for the water to cool
Our rating
8,9
good

Similar Pool Heater comparisons

Pool Heaters buying guide: How to choose the right product from the above Pool Heaters test or comparison

Understanding Pool Heaters: How They Work and Why You Need One

How Pool Heaters Operate

Pool heaters are essential for maintaining a comfortable swimming temperature, especially in cooler months. They work by circulating water through a heating mechanism—either gas, electric, or solar—before returning it to the pool. This process allows you to extend your swimming season and enhances the overall enjoyment of your pool. Imagine jumping into a warm pool on a chilly evening or hosting a pool party that’s comfortable for all your guests.

The Benefits of Having a Pool Heater

By investing in a pool heater, we can transform our swimming pool into a year-round attraction. This means more fun and relaxation without worrying about the temperature. A properly heated pool invites family and friends to gather, creating lasting memories. Moreover, heating the pool can help retain water temperature during cooler nights, ensuring that every dip feels just right.

Choosing the Right Type of Pool Heater for Your Needs

Understanding Different Types of Pool Heaters

Choosing the right pool heater depends on various factors, including your budget, environmental considerations, and the type of pool you have. Gas heaters are powerful and heat water quickly, making them ideal for those who want to use the pool intermittently. Electric heat pumps are more energy-efficient and suitable if you plan to heat your pool regularly, while solar heaters provide a more sustainable option, harnessing the sun’s energy to keep your pool warm, perfect for those sunny days.

Assessing Your Pool Size and Usage

Before selecting a pool heater, it’s crucial to consider your pool size and how often you use it. For larger pools, a more powerful heater will be necessary to raise the water temperature effectively. If you work from home and can swim mid-week or a few times a month, investing in an electric heat pump or gas option may cater better to your lifestyle. Meanwhile, for seasonal users, a solar heater will suffice for summer enjoyment.

Factors to Consider Before Buying a Pool Heater

Evaluating Energy Efficiency

Energy efficiency is not just good for the environment; it can help save money on your utility bills. When assessing different pool heater options, look for models that offer high energy efficiency ratings. For example, electric heat pumps may have higher upfront costs but save you money in the long run by maintaining lower operating costs. Understanding the running costs will help you choose a model that fits your budget and usage.

Installation Requirements

Consider the installation process for your chosen heater. Gas heaters often require ventilation and connection to a gas line, which may complicate installation. Conversely, most electric heaters simply need a power source and can be set up quickly. Be sure to factor in these requirements, as they may influence your final decision. Always consult with a professional installer to ensure you comply with local regulations.

Maximising Efficiency: Tips for Using Your Pool Heater Effectively

Optimising Temperature Settings

To maximise the efficiency of your pool heater, adjusting the temperature settings to just what you need is essential. A comfortable swimming temperature is generally around 26-28 degrees Celsius. Setting your heater higher than necessary can lead to wasted energy and higher costs. By keeping the heater at a moderate temperature, we ensure a pleasant swimming environment without overburdening our energy bills.

Utilising Pool Covers

Investing in a high-quality pool cover can significantly enhance your heater’s efficiency. A cover prevents heat loss during cooler evenings and overnight, drastically reducing the energy needed to maintain warm water. By using a cover when the pool isn’t in use, we not only reduce running costs but also prolong our heater’s lifespan.

Maintenance Essentials: Keeping Your Pool Heater in Top Condition

Regular Cleaning and Inspections

To keep our pool heater functioning optimally, regular maintenance is vital. This includes cleaning filters, inspecting the heating element, and checking for any leaks or corrosion. By conducting routine checks, we can catch issues early and avoid costly repairs down the road. Make it a practice to inspect your heater at the beginning and end of each swimming season.

Scheduling Professional Servicing

Consider scheduling professional servicing annually to ensure your pool heater operates efficiently. A technician can perform in-depth checks, making adjustments or repairs that you might miss. This proactive approach protects our investment and ensures we get the most enjoyment out of our pool heating system.

Table of contents
  1. Understanding Pool Heaters: How They Work and Why You Need One
  2. Choosing the Right Type of Pool Heater for Your Needs
  3. Factors to Consider Before Buying a Pool Heater
  4. Maximising Efficiency: Tips for Using Your Pool Heater Effectively
  5. Maintenance Essentials: Keeping Your Pool Heater in Top Condition

Overview

1. Comparison winner
SmartPool Sunheater Solar Pool Heater WWS421P
Our rating
9,6
very good
SmartPool Sunheater Solar Pool Heater WWS421PAvailable immediately
2. Best value
Monzana Solar Collector Pool & Water Heater 112x55x14cm
Our rating
9,6
very good
Monzana Solar Collector Pool & Water Heater 112x55x14cmAvailable immediately
Intex 56684BS Above Ground Pool Heater
Our rating
9,6
very good
Intex 56684BS Above Ground Pool HeaterAvailable immediately
4. Bestseller
Intex Pool Heater
Our rating
9,6
very good
Intex Pool HeaterAvailable immediately
Bestway 2800W Pool Heater
Our rating
9,6
very good
Bestway 2800W Pool HeaterAvailable immediately
Electric Pool Heater
Our rating
9,5
very good
Electric Pool HeaterAvailable immediately
Portable 2000W Pool Water Heater with 304 Stainless Steel and Digital LCD Thermometer – Heats 5 Gallons
Our rating
9,3
good
Portable 2000W Pool Water Heater with 304 Stainless Steel and Digital LCD Thermometer – Heats 5 GallonsAvailable immediately
High Precision Heat Pump Pool Heater 15KW, 220V
Our rating
9,3
good
High Precision Heat Pump Pool Heater 15KW, 220VAvailable immediately
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