In this quick video, we talk about how many solar thermal collectors we think you need to heat a hot tub using solar energy. If using SolarisKit solar heating collectors, we recommend 1-1.5 solar collectors per person. So if you have a four person hot tub, 4-6 solar collectors would be our recommendation in the UK.
For more information on how to heat a hot tub and out HT100 solar hot tub heating kits, please visit solariskit.com.