Designed in the UK
Thoughtfully crafted to deliver a product that’s built to perform and made to last.


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A compact 3 kW spa heater and cooler built with Poolex Full Inverter technology. Designed for small spa systems, cold plunges and backyard wellness setups needing precise, efficient temperature control all year.
The PortaSauna X Poolex 3 kW Spa Heater & Chiller is the perfect upgrade for small spa systems, ice baths and compact wellness setups. Engineered by Poolex, Europe’s leading heat-pump manufacturer, this 3 kW model brings high-performance heating and cooling in a compact, ultra-efficient footprint.
Powered by Full Inverter technology, it delivers stable temperatures, whisper-quiet operation and energy savings of up to 75% compared to standard electric heating. Whether you want 40°C spa sessions or 4–10°C cold-plunge therapy, the 3 kW unit offers smooth, reliable temperature control even in cooler UK climates.
Compact, lightweight and easy to install, it is the perfect partner for PortaSauna, PortaPlunge SOLO, CUBE, and smaller residential spa systems.
Our team is always happy to help, give us a call for support & advice.
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When you buy a PortaPlunge, you’re not just getting a plunge – you’re joining a warm, welcoming community of sauna and plunge lovers.
8K FollowersFor any additional queries, contact us at 02392 984 667or hello@portasauna.co.uk.
Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.
It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.
PortaPlunge can be used indoors or outdoors on any flat surface. Avoid sharp objects and ensure stable ground before filling.
Under 5 minutes using the included hand pump.
8 cm thick drop-stitched, heat-sealed premium PVC — the same grade used in high-pressure paddleboards.
Use the integrated drain valve or siphon hose attachment. Ensure disposal complies with local drainage rules.
Thoughtfully crafted to deliver a product that’s built to perform and made to last.
Quick delivery from our UK & EU warehouses on all orders with 30 day return policy.
We’re here for you 7 days a week, ready to help by phone or email.
All payments are processed safely and securely with 0% Finance Options Available.