From our technical experts

Thermalec Pool or Spa Heater 3kW One Phase Only


  • Thermalec Pool or Spa Heater
  • 3kW Single Phase Only
  • Complete with all necessary controls
  • Thermal efficiency for life
SKU: 2727 Categories: ,


Thermalec Pool or Spa Heater 3kW One Phase Only

Cast in BS-EN-1561-1997-ENGJL-200 iron, with a heavy fusion bonded epoxy coating impervious to chemically treated pool water and constructed in accordance with British Patent 2.092,282 Design pressure of 35psi (2.46kg/cm2) with 3/4″ safety valve(s). Set to operate at the maximum normal working pressure of 30psi (2.1kg/cm2) giving protection to both the heater and and the installation as a whole against over pressure.

~A 1/2″ drain valve at the lowest point allows the heater to be left empty in winter.

~Flow connections consist of easily removable uPVC stub flanges into which the pipes may be fitted using suitable adhesive, as the flanges can be released easily from the heater no unions are required, nor is any form of heat sink needed.

~Flow direction is from left to right, but may be reversed quite simply on site following the installation instructions.

~Heavy duty nickel plated copper sheathed elements to BS-EN-60335-1, with low Watt density for long life, are mounted individually in a removable top plate, which allows complete inspection of the interior of the vessel.

~Heavy duty contactors control the power supply to the elements. The contactors are switched in turn by a filter pump interlock relay, a pool temperature controller with less than 1°C differential, and a manually reset safety thermostat to operate before the temperature reaches 53°C.

~The control circuit is protected by a 2A fuse. A minimum of 6 indicator lights monitor every stage for simple diagnostic servicing. The controls are mounted in a plastic coated steel enclosure above the heater body. Cable entry is through a removable plate in the rear panel.

  • Thermalec Pool or Spa Heater
  • 3kW Single Phase Only
  • Thermal efficiency for life
  • Running cost will not increase with time
  • No need for regular cleaning or descaling
  • Complete with all necessary controls to operate the heater
  • Including contactors, pool temperature controller
  • Manual reset excess temperature stat
  • Diagnostic Lights
  • Patented Spiral flow design means the heaters do not have to rely upon a flow switch or pressure switch – nor should one be fitted.
  • Product Code: HT030

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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.