What Is the Best Way to Heat a DIY Hot Tub? (2026 Running Cost Comparison)

Steaming in-ground garden hot tub with an air source heat pump beside its equipment enclosure

Electric, air source heat pump, gas, heat exchangers, wood and solar compared: what each really costs per unit of heat at today’s UK and US prices, how fast they heat, and which one I’d fit to a DIY hot tub.

DIY Best Hot Tub Heater in 2025

DIY Hot Tub Heater

DIY Hot Tub Heater – which one should I choose? How you heat the hot tub can ultimately affect how you use it and how much it costs you to run your tub. As I am sure you have realised, this blog and my YouTube Channel focus on DIY Hot Tubs and Pools. Hopefully, in this article, I can explain some of the options that you have for your DIY Hot Tub Heater.

Underwater Hot Tub Lighting Made Simple : The Ultimate Guide

Hot tub lighting

If you’re looking into building a DIY hot tub, then you know lighting is a big aspect of your build. It adds another dimension to your hot tub, and having some sort of lighting makes a huge difference in the overall experience.

However, there’s a lot to hot tub lighting, and it can get confusing at times. Don’t worry because this is the ultimate DIYer’s pool and spa lighting guide! I’ll take you through everything you need to know about lighting up your hot tub.

How to Choose a New Pool Pump: Types, Sizing and What to Check Before You Buy

Variable speed pool pump with a digital control panel plumbed to a sand filter on a pool equipment pad

A practical guide to choosing a replacement or new pool pump: pump types, the US rules since 2021, sizing by turnover and head, self-priming, and matching the pump to your filter, heater and supply.