Gas Safe registered
Company reg. no. 552490, all engineers registered
Vaillant Advance Installer
Dan and Dean
F-Gas registered company
FGAS ID FGAS3023734
Checkatrade member
Independently vetted
Constructionline Gold
Accredited supplier
Fully insured
£5m public · £10m employers' liability
What boiler repair with DM Heating and Cooling involves
Boiler repair starts with finding the actual fault rather than changing the part that most often fails. We test the appliance and the system around it (gas pressure, flue, condensate, circulation, controls and expansion) because a boiler that keeps locking out is frequently reporting a problem that sits outside the casing.
All gas work is carried out under our Gas Safe company registration, number 552490. Dan, Dean and their sons Owen and Jack are all individually Gas Safe registered under that company registration, so a fault that takes some engineers several return visits is usually identified on the first.
Once we know what is wrong you get a plain answer and a written price. If a repair is sensible we repair it. If the appliance is at the end of its life and the money is better spent on a replacement, we will say so rather than sell you a part that buys a few months.
- Gas Safe registered engineers, reg. no. 552490
- Clear diagnosis before any work is agreed
- Honest advice on repair versus replacement
- No call-out fee for estimates
Why it matters
What it costs you to leave a faulty boiler
A boiler that needs resetting every few days is not a quirk, it is a warning. Intermittent faults become total failures, and they nearly always become total failures during the first cold week of the year when engineers are hardest to book.
A struggling appliance also burns gas producing heat that never reaches your rooms, so the running cost climbs quietly while you wait. Where circulation or system water is the underlying cause, the damage keeps spreading to the pump and heat exchanger.
There is a safety side too. Badly maintained gas appliances are associated with carbon monoxide risk, and any work by someone who is not Gas Safe registered is both illegal and uninsurable.
Common mistakes we're called in to fix
- Repeatedly resetting a boiler that is reporting a genuine fault
- Replacing parts on guesswork instead of diagnosing the system
- Ignoring low pressure that keeps dropping: that is a leak, not a top-up job
- Letting anyone who is not Gas Safe registered touch a gas appliance
Our process
Our boiler repair process
- 1
Talk it through
Tell us the symptoms and any fault code on the display. It often tells us what to bring before we arrive.
- 2
Diagnosis on site
We test the appliance and the system feeding it, so we fix the cause rather than the symptom. No call-out fee for an estimate.
- 3
Clear written price
You get the price and the honest repair-versus-replace answer before we do the work.
- 4
Repair and test
The repair is carried out, the appliance re-tested, and the system checked to confirm the fault has actually gone.
- 5
Handover and guarantee
We explain what failed and why, leave the site clean, and back the work with our 1-year workmanship guarantee.
Benefits
What you get from a properly diagnosed repair
The real fault found
System-wide testing rather than swapping the usual suspects until something works.
Honest advice
If replacing is better value than repairing, we tell you: with the reasoning, not a sales pitch.
Gas Safe legality
Work carried out under company registration 552490 by engineers on the register.
No call-out fee
You are not charged simply for us to come and look at the problem.
Fully insured
£5m public liability and £10m employers' liability cover on every job.
1-year workmanship guarantee
The repair is backed, the same as everything else we do.
In detail
Boiler repair in more detail
The questions homeowners in Maidstone and Medway ask us most when a boiler stops behaving.
Pressure that keeps dropping
A sealed heating system should hold its pressure for months. If yours needs topping up weekly there is water escaping somewhere: a radiator valve, a pipe joint under a floor, or the boiler's own expansion vessel or pressure relief valve.
Topping it up repeatedly introduces fresh oxygenated water every time, which accelerates corrosion inside radiators and the heat exchanger. Finding and fixing the loss is always cheaper than the damage it causes.
Repair or replace
The sensible test is the cost of the repair against the remaining life of the appliance and the parts still available for it. A single fault on a well-installed boiler with years left in it is worth repairing.
A boiler that has had several significant faults, is scaled or sludged, or has obsolete parts is money spent twice. In that case see our boiler installation page, where a new appliance comes with a free survey, a written estimate and manufacturer registration.
Prevention afterwards
Most of the repairs we attend could have been caught during an annual service. Once the fault is fixed, an annual boiler service keeps the appliance safe, efficient and, for most manufacturers, within the terms of its warranty.
Where the underlying cause is dirty system water, a power flush clears the sludge out so the same fault does not return next winter.
Related services
Popular areas we cover
- Boiler Repair in Maidstone
- Boiler Repair in Aylesford
- Boiler Repair in Rochester
- Boiler Repair in Snodland
- Boiler Repair in West Malling
- Boiler Repair in Kings Hill
See all areas we cover, browse every service, go back to the homepage, or contact us.
Where we work
Boiler Repair across Maidstone and Medway
What customers say
Rated 9.97 out of 10
across 13 Checkatrade reviews
10/10 · New Air Conditioning Installed
"From my first enquiry to completion of works I found them to be very courteous, hard working and competitively priced. Dan carried out a full survey and gave a cost breakdown for works. A date was booked and the guys turned up on time and work was completed within the given timescale. They were very polite and tidy and even vacuumed after completion. I am so happy with my new hot/cold air conditioning unit which will enable me to work comfortably from home and sleep at night. They even sorted my dripping tap free of charge! I would highly recommend DM Heating and Cooling."
10/10 · New Combi Boiler Installation
"I had a new combi boiler installed and had my old one removed. Excellent service and a very productive team. They were helpful with boiler and thermostat advice and quick to reply. I would highly recommend their services."
10/10 · Boiler replacement
"Dean and the team were excellent. Quick response to initial issue, boiler needed replacing. All quotes explained with options. Work carried out quickly and professionally. I found them to be very reliable and trustworthy. Wouldn't hesitate to use again or recommend."
Common questions
Straight answers,
before you call
Still unsure? Call Dan on 07930 686788.
- Do you charge a call-out fee?
- No. There is no call-out fee for an estimate, and you get the price in writing before any work is agreed.
- Can you repair any make of boiler?
- We work on domestic gas boilers of all common makes. Dan and Dean are also Vaillant Advance Installers, so Vaillant appliances are particularly familiar territory.
- How quickly can you come out?
- We work standard working hours and take on emergency call-outs where possible. Call Dan or Dean and we will tell you honestly when we can be there.
- Is the repair guaranteed?
- Yes, every job we carry out is covered by our 1-year workmanship guarantee.
- Should I repair or replace my boiler?
- It depends on the fault, the age of the appliance and whether parts are still available. We give you a straight answer after diagnosis rather than before it.
Boiler playing up? Let's find out why
Gas Safe registered diagnosis with no call-out fee, a written price and honest advice on repairing or replacing.