How to Change a Thermostatic Radiator Valve Without Draining The System

Excellent, clear explanation. No nonsense, no annoying background music, straight-talking. 10/10

In all my years (65) I've never seen those bungs. They would have saved me hours of DIY over the years!

After 24 hours of trying to fit a new radiator and then getting leaks galore once re-pressurising the system your video is the best out of dozens I've watched and allowed me to do a great install. The two things that saved me - not to use tape where there is an olive and to wind the tape around 10-12 times where it is needed. I was just doing it once or twice. Now I'm a happy bunny!

Hi mate , I’m currently putting myself through night school doing level 2 plumbing , I’m 46 years old and decided to have a complete career change , I understand college has to do it a certain way but I get frustrated things don’t sink in and feel I’m not learning but just want to thank you for your videos as you explain step by step as I can see you doing it 👍

Mate your teaching is second to none. Really easy to understand and you don't go on to different subjects showing all other crap other people do with DIY videos. Best DIY videos on YouTube brother

Excellent clear video. No annoying music. Easy to understand thank you.🙂

Just bought my first house and one of the radiator valves started leaking. This video saved my ass!!!! Thanks so much :D

5:57 a good tip is to count the number of turns used to shut the lockshield so the system remains balanced once opened again.

Thank you so much for making this video. Made an otherwise daunting looking job entirely doable for me and the panic I was in. Discovered a pool of water under the a bedroom based angled TRV and further noticed water damage suggesting it had been stealthily leaking for a while before it had advanced enough to make a puddle. Watched this video, went to Toolstation and sorted within two to three hours. My wife was well impressed so might be able to get away with being a bit cheap this valentines day.

As soon as you went into the loft where the spiders live, your video convinced me to pay someone to fit the four valves. So thank you for that clarity.

Great video, just one bit of advice. The heating system has hopefully been balanced by the installation engineer as part of the system commissioning. When closing each lock-shield valve on the system before exchanging the wheel-head control valve to a thermostatic valve, count the number of turns required to close each lock-shield valve and make a note of the number of turns. This way you can reopen each lock-shield valve to the original position, which will ensure that the system balancing is not altered, i.e. if this is not done you will find that the nearest radiators in a bungalow, or the upstairs radiators in a house will get hot quickly, but it will take a long time for the nearest or downstairs radiators to become hot, they will have sluggish circulation and may only get warm instead of hot when it is very cold outside.

Big thanks for this amazing video and showing all steps.

Great video, changing radiator has always filled me with fear. But from following this video and your advice I overcame my fear and successfully changed out my radiators with out issue. Thanks for taking the time to make and share this.

Good practical advice, even for experienced DIY people. Simple, no nonsense instructions. Keep up the good work 👍

Complete novice and the step-by-step guide worked perfectly. Brilliant. Many thanks. 👍

Great, instructive and with no technobable. I'm off to sort my "dead" radiator now 🙂 Many thanks for your videos - they take the fear out of DIY repairs (and as we know, water gets everywhere if there's even the smallest of it allowed to go where it shouldn't!) and how to remove the radiator is an added help for the DIY decorator. Many thanks. Best wishes Peter

Great video , always interested in how other professionals work . Your guide is really easy to follow . If it had been a combi system , I would have taken the opportunity to have drained the rad and filled it with inhibitor . Will be watching more of your videos now .

Clear, easy to follow video. I do a fair amount of plumbing in our house, but have yet to tackle replacing these TRV without draining the system as you say. Didn't catch your name, but thanks all the same !

Straight to the point , get ready by having all the tools available to hand , towels and a collection tray , ( new valve etc ) find your loft ladder , have bungs in your pockets , and follow the video . Excellent , I'm feeling very confident !

Followed this video to change faulty TRV , managed to do it successfully. One thing ..I bought the bungs and the expansion vent pipe I couldn't get my bung in as pipe was tight in the corner of tank and the tank wall was pushing the bung to the side , I'd to give up in using the bung and used a wine bottle stopper ( thing u put in the bottle once opened) it worked a absolute treat , I knew it had worked by checking the pressure thru the bleed screw I accept no responsibility if u have to follow my way of doing it but thought I'd pass on my experience VERY clear NO nonsense video , explanation second to none Cheers mate