Google
Very good experience from start to finishManjinder S. The service felt honest and professionalP Miles A thorough job checking the systemPrincess M. They did not just turn up and push a power flushJodie-Deane M. They left my home as clean and tidyJamie K. Checked the system first rather than pushing the workSerak T. The heating is working much better nowBelle H. Professional from start to finishDay W.

Central Heating Health Check London

Facts about your system, not guesswork.

A central heating health check London service is the honest first step when something is not quite right, or when you simply want to know what condition your system is in. We test, inspect and explain, so any decision about cleaning or repairs is based on what your system actually needs, not on assumptions.

We diagnose first. Flush only where required. No pressure to flush Clear quote for the agreed work
The short answer

A central heating health check is a professional inspection of your system. We test the water for sludge and corrosion, check the radiators, boiler and pump, and check the inhibitor level, then tell you plainly what condition the system is in and what, if anything, it needs. It is the diagnosis that comes before any clean, so you never pay for work the system does not require.

What a central heating health check is

A health check is exactly what it sounds like: a proper look at the state of your heating system. Rather than assuming a symptom means a particular fix, we test the system water for sludge and corrosion, feel the radiators for cold spots, check the boiler and pump, and check whether the system still has a healthy level of corrosion inhibitor protecting it.

It is the professional version of our free symptom checker: where the checker gives you a first read from your symptoms, a health check confirms what is really going on inside the system. That matters because more than one problem can look the same from the outside, and the right fix depends on knowing which one you have.

Engineer noteA health check can help avoid spending money on the wrong fix. Plenty of people book one expecting bad news and find the system just needs a small adjustment, not a full clean.

What a health check covers

Test the system water

We check for sludge and corrosion, the clearest sign of the system’s health.

Inspect the radiators

We check for cold spots and uneven heating across the system.

Check boiler and pump

We look at how the system is circulating and whether anything is struggling.

Report and advise

We explain what we found in plain language and what, if anything, it needs.

After the check you get a clear picture and an honest recommendation. That might be a power flush if the system is genuinely sludged, a lighter chemical clean, a smaller fix, or simply some protection and confirmation that no major cleaning is needed. Whatever it is, we confirm a clear quote for any agreed work first. See what affects the price.

When a health check helps most

A health check is especially worthwhile when you are not sure what is wrong, when symptoms keep coming back, or when you are about to spend money on the system and want to know it is sound first. It is also useful when buying or selling a home, or before fitting a new boiler, when knowing the condition of the existing system can save trouble later.

It is the natural fit for our way of working: diagnose first, then recommend the right fix. If you would rather just tell us your symptoms, that is fine too, but a health check is the most thorough way to replace guesswork with facts.

Central heating health check London, answered

What is a central heating health check?
A central heating health check is an inspection of your system: we test the system water for sludge and corrosion, check the radiators, boiler and pump, and tell you what condition it is in and what, if anything, it needs.
Do I need a health check or a power flush?
A health check comes first, because it tells you whether you need a power flush at all. Many people book a check, find a smaller fix is enough, and avoid a flush they did not need.
What does a health check involve?
Testing the system water, inspecting the radiators for cold spots, checking the boiler and pump, and checking the corrosion inhibitor level. We then explain what we found in plain language.
Is a central heating health check worth it?
If you are unsure what is wrong, or buying or selling a home, yes, because it replaces guesswork with facts and stops you paying for the wrong fix.
Will you try to sell me a power flush?
No. The point of a health check is honest diagnosis. If your system is fine, we will tell you. If it needs a smaller fix such as bleeding or balancing, we will say so.
How much is a central heating health check?
It depends on the property and the system. Tell us a little about your setup and we will confirm a clear quote. You can see what affects pricing on our cost page.

Want to know the real state of your system?

Tell us a little about your heating and we will arrange a health check and confirm a clear quote for any agreed work. No pressure to flush if it is not the right fix.

From our customers

What our customers say

Google
Manjinder Sanghera

Very good experience from start to finish. The appointment was easy to arrange, the engineer arrived on time and took care around the house while working. The heating is now running much better than before.

Google review
P Miles

I contacted Power Flush London because some of my radiators were taking ages to heat up. The team explained the likely causes clearly and checked the system before recommending anything. The service felt honest and professional.

Google review
Princess Malcolm

I contacted Power Flush London because some of my radiators were slow to heat up. Simon was polite and easy to deal with, and Steve did a thorough job checking the system before starting. The whole process felt honest and professional.

Google review
Jodie-Deane Morris-Hewitson

Really good service. They did not just turn up and push a power flush. The system was checked first, the options were explained and the quote was clear before the work went ahead.

Google review
Jamie N Kent

Power Flush London were very professional. The engineer explained the issue clearly, protected the work area and carried out the job carefully. They left my home as clean and tidy as it was when they arrived. The all the radiators feels much more hotter to the touch now. Looking forward to see how it performs in the coming winter months.

Google review
Serak Henok Tesfai

I had a few radiators that were not heating properly and Power Flush London were very helpful. They checked the system first rather than just pushing the work, which I appreciated. Professional and tidy throughout.

Google review
Belle Howard

Really good service from start to finish. The booking was straightforward, the engineer arrived when expected and the work was carried out neatly. Everything was explained clearly and the heating is working much better now.

Google review
Day Walker

Power Flush London were professional from start to finish. Simon made the booking simple and Steve carried out the work carefully, checking the radiators and explaining the results. The heating is working much better and the house was left clean.

Google review
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