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From our technical experts

15kW Thermalec Heater


  • 15kW Heater
  • Thermal Efficiency
  • Economy through Efficiency
  • Does not require regular cleaning or descaling
  • Free Delivery


HT150T 15 kW Thermalec – (1 or 3 phase)


  • Economy through efficiency
  • Does not require regular cleaning or descaling
  • Running cost will not increase with time
  • Thermal efficiency for life


The Thermalec sizing chart is for outdoor swimming pools in the South of England, running from the beginning of May until the end of September.
For swimming pools in the North, multiply the heater size by 1.3 – 1.5, depending on the exposure of the pool.
The figures shown for capacity of the pool – m³ – are based upon an average depth of 1.36m and are provided as a guide when an exact surface area is not known.
Indoor pools: providing the indoor air temperature is maintained at least 1°C above the pool temperature by an alternative form of heating 24 hours per day, the heater size may be reduced by multiplying by 0.7, but since running costs are related to the size of the pool and the temperature required, not the size of the heater, we advise keeping to the table where possible.
In countries where off-peak electricity is not available, heaters sized at 1kW per 1000 gallons (4500 litres) with the heater operating 24 hours per day, will normally be adequate and will give an 8°F (4.4°C) rise in 24 hours assuming no losses.


Please note: These models are not suitable for use with fish. A fish safe model is available.

Free Delivery – UK Mainland Only. For delivery charges to all other areas please call or email giving your postcode

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Returns Policy

Your rights to return goods are protected under the EU Distance Selling Directive.

You are entitled to cancel your order and return the goods within 7 working days for a full refund not including the cost of delivery. Do this by contacting us by email or telephone and quoting the order number supplied to you. Your refund will be paid within 30 days. You are responsible for the cost and risk of loss or damage when returning the goods, so you should take out enough postal insurance to cover their value. This cancellation policy does not affect your rights when we are at fault - for example, if goods are faulty or incorrectly-described.

Exclusions: Bespoke items (made to measure items) are not included and cannot be returned. If a bespoke item is faulty then the product warranty /guarantee will take effect.

Any goods returned should be in saleable condition.

These terms apply to your order. We may change our terms and conditions at any time, so please do not assume that the same terms will apply in the future.

None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.

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