ThermaCore™ Technology

What Is Lay-Z-Spa ThermaCore™?

ThermaCore™ is the technology behind energy-efficient rigid foam‑sided Lay‑Z‑Spa hot tubs such as the Toronto AirJet Plus™.

Instead of an inflatable liner, these hot tubs feature sturdy thermal foam panel that get zipped up into the Lay‑Z‑Spa TriTech® outer material.

Not only providing greater stability and firm sides, but this foam hot tub construction also has greater heat retaining properties offering 60% better energy efficiency than a traditional inflatable hot tub.

Energy-Saving Foam Hot Tub

With a thermally insulating foam construction, ThermaCore™ Lay‑Z‑Spa hot tubs retain substantially more heat and reach temperature much quicker making them more economical to run all year round.

The top cover of all ThermaCore™ hot tubs includes the award-winning EnergySense® insulation and with standard features such as the power saving timer and Freeze Shield™, rigid foam Lay‑Z‑Spa hot tubs are the most energy‑efficient portable hot tubs to keep using during the winter months.

Energy-Efficiency Award

Lay-Z-Spa ThermaCore™ "Eco/Energy Efficiency" silver award 2024

Energy-Efficiency Award

Lay-Z-Spa Toronto AirJet™ "Eco/Energy Efficiency" gold award 2022

Previously we had an inflatable and this version really is cheaper to run.

RJ Moore - Product Review

As it’s not air filled you don’t have the worry of a puncture and it feels more robust.

Tamsin - Product Review

The insulation works a treat keeping the temperature within a degree over night, the pump power usage is low and we keep the heating on all the time to keep the temp.

James Y - Product Review

It's a great hot tub when in use and glad we waited for the foam filled insulation rather than inflatable for better energy efficiency.

Gill - Product Review

It has noticeably reduced my electricity running costs. It only drops 1 degree overnight without any heater being on.

Teresa B - Product Review