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Pool Heaters

Swimming Pool Heaters: Find the Perfect Heating Solution

At PoolStore, we supply a comprehensive range of swimming pool heaters tailored to every requirement—from 10ft backyard splasher pools to large semi-commercial installations.


Choosing the Right Energy Source

The first step in selecting a heater is determining your available energy source. Below is a breakdown of the most efficient ways to heat your pool based on your utilities and pool size.


Gas-Fired Swimming Pool Heaters

If your property has access to mains gas, a gas heater is often the most powerful and fastest way to heat your water.


  • Top Recommendation: The Certikin Genie Boiler.
  • Why it wins: It is currently the only condensing pool boiler on the market. Unlike conventional heaters, it captures heat that would otherwise be wasted, making it significantly more energy-efficient and cost-effective.
Electric Heaters & Energy-Efficient Heat Pumps

If gas isn't an option or you have a smaller pool, electricity is the standard alternative. You generally have two choices:


  1. Direct Electric Heaters: Brands like Elecro and Thermalec are reliable and affordable upfront. Best for: Pools with a volume of less than 5,000 gallons.
  2. Swimming Pool Heat Pumps: While they have a higher initial purchase price, they use significantly less electricity by extracting heat from the air. Best for: Long-term energy savings on medium-to-large pools.
Oil-Fired Heaters for Large Scale Pools

For large-scale or commercial pools without gas access, an oil-fired swimming pool heater might be necessary. However, because oil prices can be volatile, we always recommend checking if a high-capacity heat pump could meet your needs first to save on long-term running costs.


Swimming Pool Heat Exchangers

A heat exchanger is a clever way to leverage your existing domestic boiler


  • How it works: It connects directly to your domestic boiler via a feed pipe.
  • The Advantage: It utilizes the spare capacity your boiler has during the summer months. It’s an incredibly cheap pool heating solution to purchase, though it does require professional pipework installation

Summary Comparison Table

Heater Type Best For Pros Cons
Gas (Condensing) Speed & Power Most efficient gas option Requires mains gas
Direct Electric Small pools (<5k gal) Low upfront cost Higher running costs
Heat Pump Energy Efficiency Lowest running costs Higher initial price
Heat Exchanger Home integration Very cheap to buy Complex installation

Call 0800 690 6288

Digital Wireless Digital Thermometer

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Monitor your pool from indoors. £42.00