Boiler repair & replacement
Breakdown repairs, annual servicing and replacements — with the system cleaned and protected so the new boiler lasts.
Plumbing & Heating · Conisbrough & Denaby (DN12)
Plumbers in Conisbrough, Doncaster
Heat365 are Gas Safe registered plumbers and heating engineers covering Conisbrough, Denaby Main and the DN12 area. Heating here has often been patched over the years rather than renewed — sluggish radiators, dated controls and boilers nearing the end of their life — and that is exactly the kind of system we sort out. Call us 24/7.
★★★★★
4.6/5 from 122 Google reviews · 96% recommend on Facebook
Your local DN12 plumber
Getting tired heating systems working properly again
Conisbrough sits beside the River Don roughly midway between Doncaster and Rotherham, where the A6023 meets the A630. The Norman castle is the landmark, and St Peter's Church is thought to be the oldest building in South Yorkshire. The town grew with industry — Kilner opened a glassworks here in 1863 — and with the collieries at Denaby Main and Cadeby next door. In the older parts of town, terraced streets still frame views up to the castle.
Next door in Denaby Main, the colliery village's terraced streets were demolished after the pits closed and replaced with modern semi-detached homes on an open-plan layout. Between those rebuilt homes and the older terraces in Conisbrough itself, many heating systems in the area will have been through a boiler replacement or two, with radiators, valves and controls often left in place from earlier. That is where the common problems come from: radiators that take an age to warm up, sludge in the system, controls that are well out of date, and older boilers that break down more often each winter.
We deal with it properly rather than piecemeal — cleaning the system, replacing what has worn out, and upgrading controls so the heating does what you ask of it. Every gas job is carried out by a Gas Safe registered engineer, and we explain what we have found before we start.
Boiler replacements with the system cleaned and protected
Power flushing, filters and inhibitor
Radiator and valve replacement
Heating controls and thermostat upgrades
24/7 emergency callout, 365 days a year
What we do in Conisbrough
Boiler, radiator and plumbing services in Conisbrough
The jobs we are called to most in DN12 — ageing boilers, sluggish radiators and the older pipework behind them.
Radiators, valves & controls
Cold spots, sluggish radiators, sticking valves and thermostats, and controls upgrades that make the heating easier to run.
Leaks, drains & everyday plumbing
Hidden leaks in older pipework, burst pipes, blocked drains, toilets and taps.
Areas we cover
Covering Conisbrough, Denaby and the surrounding DN12 area
We cover the western side of the Doncaster borough regularly. Areas we work in around Conisbrough include:
Where Conisbrough is
Conisbrough sits in the DN12 postcode beside the River Don, between Doncaster and Rotherham. If you're anywhere on this map, we cover you.
Why Heat365
Why Conisbrough homeowners call Heat365
Covering DN12 and the Don valley
Conisbrough, Denaby Main and the neighbouring villages sit on the Sheffield side of the Doncaster borough, within easy reach of our South Yorkshire patch.
Gas Safe & insured
Every gas and boiler job is carried out by a Gas Safe registered engineer, and we're fully insured.
We fix the system, not just the part
We look at why a boiler or radiator is struggling — sludge, balancing, controls — so the same fault does not come straight back.
Award-winning & trusted
Voted Best in Sheffield 2024, with 4.6★ on Google and 96% of Facebook reviewers recommending us.
Reviews
What Heat365 customers say
Rated 4.6★ from 122 Google reviews & recommended by 96% of reviewers on Facebook. These reviews were left by Heat365 customers across Sheffield and South Yorkshire.
★★★★★
"Needed a new boiler installed asap, got in contact with Ricky. Straight away he quoted & fitted me in quickly. The lads stayed for 10 plus hours and returned the next day to ensure I had water and heating. Can't fault the lads at all."
Jade B. · Facebook review
★★★★★
"Great service, responded quickly and sorted my boiler out so I had heating and hot water back on in this freezing weather. Came out late on a Saturday night to fix. NHS discount too!!"
Olivia C. · Facebook review
★★★★★
"Thank you to Rick and the team for fitting our new boiler and radiators. I waited a while before leaving a review, but 6 months down the line it's still working just as good. I would highly recommend."
Oliver R. · Facebook review
FAQs
Plumbers in Conisbrough — your questions answered
Can't see your question? Call 07534 793949 — we're happy to help.
Should my heating system be cleaned before a new boiler goes in?
In most cases, yes. Boiler manufacturers generally expect the system to be cleaned and protected with inhibitor when a new boiler is fitted, and many also expect a filter — it is often a condition of the warranty. On an older system full of sludge, putting a new boiler onto dirty water shortens its life. We check the condition of the system water and recommend the right level of cleaning, from a chemical clean to a full power flush.
Some radiators take ages to warm up — do I need new ones?
Not necessarily. A slow radiator is often down to a sticking valve, a system that has never been balanced, or sludge settling at the bottom of the panel. We test before recommending anything. Radiators that are corroded, weeping or badly blocked are worth replacing; many others just need freeing up and balancing.
My heating controls are old — what would an upgrade involve?
Usually a modern programmable room thermostat, thermostatic radiator valves on the radiators that need them, and sometimes a smart control you can run from your phone. Current rules for new boiler installations in England also set minimum requirements for controls, so we make sure anything we fit meets them.
Do you work on the older terraced streets in Conisbrough?
We do. Older terraced homes often have a mix of pipe types added over the years, sometimes buried in solid walls or under timber floors. We use non-invasive leak detection wherever we can, so we are lifting as few boards and cutting into as little plaster as possible.
Do you cover Denaby Main, Cadeby and Edlington as well?
Yes. We work across the DN12 area and the western side of the borough, including Denaby Main, Old Denaby, Cadeby, Edlington, Warmsworth and Mexborough. If you are nearby and not sure, call us and we will confirm straight away.
Need a plumber in Conisbrough?
Gas Safe engineers covering Conisbrough, Denaby Main and DN12 — boilers, radiators, heating controls and emergency plumbing, day or night.
Gas SafeRegistered
4.6 / 5122 Google reviews
2024 WinnerBest in Sheffield
24/7365 days a year
20+ YearsLocal experience