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4.8 Average 914 Reviews

John M

I came across The Whirlpool Bath Shop by chance when searching for a jacuzzi bath and I'm so glad I did! The transaction was so easy and the staff friendly & helpful. The square shower bath we bought was delivered on time and eith no issues, I would recommend to anyone looking for great service.
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Koller Inline Water Heater

£176.23 (inc. VAT) £211.98
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Koller Inline Water Heater - Limited Stock Available At This Price

An inline water heater keeps your bath water hot allowing you to enjoy a longer soak without having to top up with hot water.

The heater is built into the whirlpool system and as water passes through the coil it is heated.

Please note the heater is not designed to heat the water from cold.

The heater will be fully fitted to your whirlpool bath and tested before delivery.

The heater is not available in kit form and should be purchased with a bath.

Main Features

  • Keeps your bath water hotter for longer 
  • Great value
  • Fitted and tested 
  • Made from composite material for complete safety. Some of the cheaper heaters use metal casings, metal casings and whirlpool bath pipe can be dangerous when overheated.

Product Reviews

Young P
Very efficient service. Bath not installed yet so can’t comment on product
Amanda and Martin were quite helpful with pre-sales/post-sales enquiries. The delivery was as scheduled. Very personable staff


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Previous Questions

Previous Questions

Mrs Emma Bartholomew
Q: If a heater is being fitted do we need to up rate the electrical supply from 13 amp to something bigger?


The heater can share the 13 amp connection with the pump or it can have a seperate 13 amp supply. The heater works off a flow switch so it is always on if the whirlpool is on, if you have a seperate 13 amp for the heater it will allow you to turn it off for example in the summer when you might not need it on.

The Spa Bath Co. is rated 4.8 stars by based on 914 buyer reviews