Edward built a slim-walled DIY hot tub for his new holiday let on the Isle of Skye, with a view to die for. Here’s how it came together, including how he tracked down a 25cm overnight leak.
20
Jul
Jul
Danny in the USA wanted a block-built hot tub that spills over into his liner pool. Here’s how his hot tub pool combo came together, from convincing the pool builder to the final tiles.
Case Studies / Example Projects
Replacing a Shop-Bought Hot Tub with a DIY Concrete Tub: Rob’s Build in France
13
Jul
Jul
Fed up with a leaky shop-bought hot tub he couldn’t get into to fix, Rob in France built a concrete tub in the same hole, reusing the old pumps and blower. Here’s how it came together.
Design / Ideas Related, DIY Hot Tub Building, Materials and Construction Related
How to Install a Counter Current Swim Jet in a Plunge Pool, Swim Spa or Hot Tub
06
Jul
Jul
A step-by-step guide to installing a counter current swim jet in a DIY plunge pool, swim spa or large hot tub: sizing, depth, fitting it to block, concrete or liner walls, plumbing the pump and wiring the air switches.
27
Jun
Jun
Jody wanted a Miami-style pool and hot tub combo in rural Northern Ireland, and found a genius way to dodge the “swimming pool tax”. Follow his build from the first dig to his first swim.
Air Source Heat Pump Related, Reviews & Info
Hydro Royal Heat Pump Review: HR 110, HR 125 and HR 150 Compared
22
Jun
Jun
Hydro Royal heat pumps are made in the USA with a 10-year limited warranty. Here’s how the HR 110, 125 and 150 compare, what the AHRI numbers mean, and which DIY builds they suit.
DIY Hot Tub Building, Plumbing Related, Support & Maintenance
Using a Priming Circuit on a Centrifugal Hot Tub Pump Above the Water Line
15
Jun
Jun
A real-world fix for a centrifugal hot tub jet pump that wouldn’t prime because the pipework sat too high, using a self-priming pump and three ball valves, plus the options to consider first.
DIY Hot Tub Building, Materials and Construction Related, Plumbing Related
Hot Tub Pipe: Sizes, Types and Pressure Ratings Explained
14
Jun
Jun
Everything you need to know about hot tub pipe before you order: imperial vs metric sizes, what sizes a DIY tub needs, pressure ratings in hot water, rigid vs flexible, and testing.
Air Source Heat Pump Related
Comfortline Heat Pump Review (2026): The Air Source Heat Pump on My Own Hot Tub
07
Jun
Jun
The Comfortline inverter is the air source heat pump on my own hot tub. Here’s the current 2026 range, the specs that matter, and how it has performed for me, cold weather included.
Case Studies / Example Projects, DIY Hot Tub Building
My Hot Tub Control Room Remodel: What I Changed and Why
22
May
May
The control room was the part of my own hot tub I was least proud of. Here’s how I rebuilt it, what the heat pump did to my running costs, and what I’d do today.