Learn how to fit thermostatic radiator valves to control temperature and save money

Hand with spanner against white radiator
(Image credit: Getty Images)

Knowing how to fit thermostatic radiator valves (TRV) isn’t as difficult as you might think. But there are some definitive steps you need to follow to make sure you’re not calling out a plumber to mop up your mistakes.

The physical changing of a TRV won’t differ from heating system to heating system, but what type of boiler and how many TRVs you want to change will make a difference on how the job is approached. If you’re only replacing a single TRV it's a job that any competent DIYer can take on with the right tools. If looking to replace more it's not so simple.

Here we explain how to replace an old TRV, why it's mandatory to have an TRV and what you should expect to pay a pro to do the job. 

How to fit thermostatic radiator valves: A quick four step guide

Steve Jenkins

Steve Jenkins is a freelance content creator with over two decades of experience working in digital and print and was previously the DIY content editor for Homebuilding & Renovating. 

He is a keen DIYer with over 20 years of experience in transforming and renovating the many homes he has lived in. He specialises in painting and decorating, but has a wide range of skills gleaned from working in the building trade for around 10 years and spending time at night school learning how to plaster and plumb.

He has fitted kitchens, tiled bathrooms and kitchens, laid many floors, built partition walls, plastered walls, plumbed in bathrooms, worked on loft conversions and much more. And when he's not sure how to tackle a DIY project he has a wide network of friends – including plumbers, gas engineers, tilers, carpenters, painters and decorators, electricians and builders – in the trade to call upon.