How much does a plumber charge to replace a thermostatic radiator valve?


    Do you want to know the cost before you go ahead with work? – Of course!

    This helpful article will help you to know what TRV is, and an estimated cost of replacing it, when you are living in London.

    What thermostatic radiator valve is for?

    thermostatic radiator valve is a self-regulating valve. They are fitted to a hot water heating system radiator. This little thing is not just helping you to be comfortable in your home, but can save you so much money on your bills. This is why it is so important to maintain them. They are responsible for your room air temperature.

    Who is qualified to change TRV in your home?

    It is very important to check, who you let into your home. To receive quality service, you have to hire the right person, with the qualifications, with public liability insurance in place. The competent person is a Heating engineer. Some plumbers are also able to help you if they have knowledge of the heating system but be aware, not all of them have.

    Read more about your heating system, and services from MML Plumbing’s experts.

    What to expect when you found the right team?

    We are able to help with repair and replacement services. Either of them you need, MML Plumbing is here to help.

    You have two options, either replacing your TRVs or fixing leaking valves.

    How much will it cost and how long does it take?

    The replacement itself doesn’t take long. About 5-10 minutes or a little longer depending on the size of your radiator. Remove the old thermostatic valve.

    However, in order to replace them, the whole system has to be drained down. Depending n the system size, this could take between 1-5 hours. When all the water has drained from the radiator, keep unscrewing the nut until you can pull the valve out of the radiator to disconnect it. Then replace it with your new valve.

    In some cases, it is possible to change them without draining the heating system.

    Heating service labour prices can start from £80 and can go as high as £160 + VAT/hours in London.

    If you are living in North London, you are lucky! MML Plumbing Ltd is a family-run local business, and our prices are affordable. We charge £80 ( INC VAT) / hours for our professional heating engineer’s visit. We will find the right TRV because it has to be the same as what you have currently. TRVs prices vary, they can start from £8- £80, but you can find even more expensive stylish ones.

    When to change your radiator’s thermostatic valves?

    TRVs can last until 10-15 years. Better quality brands did last longer than, like Danfoss.

    When your TRVs are leaking or get stuck, replacing is the most important thing asap.


    Upgrading them can have profitable on your home’s heating, and you might change them to make your home stylish because they are an important part of your central heating system.

    Sometimes you can save your radiators and no need to replace radiators. Radiator installed is always a good thing to do, however, not everyone has spare money to do so.

    Faulty radiator valves replacement

    Faulty thermostatic radiator valves mean either a leak or they can be stuck. Preventing expensive repairs is the most important thing!

    Changing manual valves for TRVs

    It can help to heat your home with efficiency. Control your bills in your home! Maintaining well the home’s central heating systems is important.

    Decor your home, with stylish and efficient TRVs 

    You can find a beautiful selection of radiator valves, you have never imagined. They will highlight your home and not just that but save you a lot on your bills, and let you control the temperature to feel comfortable in your living room or rooms.

    Replace a radiator or just a TRV?

    It is a really good question, however, this is depending on the issue you are having. That is why customers need heating engineers to decide what would be the best solution. There are hundreds of types of radiators on the market, such as stainless steel radiators, double panel radiators, cast iron radiators just to name a few, and they can have different issues. There is one thing we agree on, people need efficient radiators to avoid huge heating bills. It is important to mention, that avoid DIY radiator replacement by an unqualified tradesman.

    What’s normally not included in the service, when you call out a plumber or a heating engineer?

    • Any congestion zone, ULEZ or parking charges – This will be added at cost to the final bill (unless a parking permit for the duration of the visit is provided).

    Why MML Plumbing Ltd?

     We are able to provide a fixed price

     Highly qualified engineers

     24/7 online customer support

    Gas safe registered

    Friendly prices

    Great customer service

    Book with confidence

    Protected by MML Plumbing’s Guarantee


    Denise Fallon
    Denise Fallon
    WOW.... what fantastic service... Levy arrived at the time I was given. He was totally professional, in capping my gas pipe. Unfortunately, he had to remove it all, as previous engineer left it short! in order for an Induction hob to be fitted. He went above and beyond what he came to do. He also checked my boiler as he was not happy about the pressure.. would definitely use MML again.. and I can highly recommend them..
    Charlie Charlton
    Charlie Charlton
    Did not have a 'regular' plumber in north London, so took a punt and mailed a few from Google search. MML came back immediately, great communication, good price for the work (which was not a simple job) and the engineer was excellent - friendly, professional and super hard working. Three long days for what was hoped to be a two day job, no moaning when it became more complicated (due to the old system being problematic), definitely reccomend.
    Martin Lawlor
    Martin Lawlor
    This was my second time using MML Plumbing. The plumber arrived on time, assessed the problem and did his best to resolve it. It was all completed within the hour and I am very pleased with the result. A very clean and tidy job done.
    Emily Harper
    Emily Harper
    MML Plumbing were really efficient, turned when he said he would, gave an accurate quote and did the job on time with no mess. I would definitely recommend them!
    Heidi Southall
    Heidi Southall
    I called MML Plumbing to investigate a boiler fault and they were very helpful and quick to respond. The engineer, Mike, arrived earlier than expected and was friendly and professional. He thoroughly explored the problem(s) and fixed what he could. Unfortunately, it is a problem that the manufacturer will have to deal with (due to availability of parts). Mike was very honest about this and, here is the amazing part, he did not charge me today as he couldn’t fully resolve the issue! Am so impressed and would not hesitate to call this family business out again.
    WH Acting
    WH Acting
    MML Plumbing did an excellent job. The engineer was very thorough with the safety checks, boiler service and Gas Safe certification of two properties he worked at for me. Very good value for money, very good service. Admin staff were courteous and friendly over phone and email and we very prompt with sending all paperwork and copies of photographs to me. Highly recommended!
    Ronald Watt
    Ronald Watt
    Katrina Perez
    Katrina Perez
    This is the third time I have used MML plumbing. They are by far the most helpful and efficient plumbers I have used. They have installed a boiler, replaired radiators, replaired and shower and toilet for me - all work is to a high standard and every repair explained in full. HIGHLY RECOMMEND
    Laurent VT
    Laurent VT
    Fantastic service! Our boiler stopped working unexpectedly. MML Plumbing came quickly, diagnosed the problem and resolved it immediately to make sure we weren’t without radiators for too long. Very impressed with the expertise, friendliness and communication. They also gave us tips for maintenance. Highly recommended!
    Jill J
    Jill J
    Replacement of fill valve. Efficient, professional and pleasant plumber.
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