
Boiler Installation in Dorking
Fixed-price quotes, no hidden fees, and up to 18-year manufacturer guarantees on selected boilers.
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Open 7 daysMon to Fri until 6pm, weekends 10am to 3pm
Surrey
We have worked in Dorking for years and have the reviews to show for it. It sits under Box Hill with a mix of period town property and substantial rural housing in the surrounding villages.
Local knowledge
Victorian and Georgian property through the town centre, period cottages in Westcott and Brockham, and large detached houses in the surrounding countryside. A number of rural properties are off the mains gas grid, running oil or LPG, and several have outbuildings or annexes served from the main heating system.
Dorking sits at the foot of the North Downs on chalk, so hard water and scale are constant factors here. Properties running unvented cylinders are particularly affected because the coil scales up and hot water recovery slows noticeably before anything actually fails. Descaling and correct system protection extends the life of these systems considerably, and it is far cheaper than replacing a cylinder.
Dorking’s water is drawn through the chalk and clay of the Surrey Hills, and it is classed as very hard, typically between 248 and 286 ppm. Whenever that water is heated, some of its calcium and magnesium comes out as limescale, and across RH4 and RH5 it comes out fast.
Inside a boiler, that scale settles on the heat exchanger and acts as insulation. The burner has to work harder to push the same heat into the water, so efficiency drops and bills creep up long before anything actually breaks. That is why we treat the annual boiler service as essential in Dorking rather than optional, and why we recommend a scale reducer or water conditioner on the incoming main.
Dorking has a high proportion of older, character property, from the Victorian townhouses in the centre to the cottages out in the villages. Where the original metal pipework is still in place, decades of very hard water have scaled it internally and often sped up corrosion as well. That combination raises the risk of a hidden leak and cuts the flow at taps and showers.
So if the shower in an older Dorking house has lost pressure gradually over the years, scaled pipework is a more likely culprit than the mains. A sudden drop usually points somewhere else, such as a new leak or a failed valve, and our guide to low water pressure explains how to tell the two apart. If water is escaping somewhere you cannot see, leak detection narrows it down before anything is opened up.
Upgrading an older Dorking property to a modern boiler or an unvented cylinder means connecting new equipment to pipework and radiators that may be carrying years of sludge and scale. We clean the system before the new boiler goes on, so it is not contaminated by the old circuit from day one. Depending on the condition, that is a full powerflush or a chemical clean, and we tell you which at the survey. A powerflush starts from £400, typically £400 to £780 for an average three-bedroom home, and the price is fixed before we start.
Leave the property, do not touch any switches, then call the National Gas Emergency Service on 0800 111 999. Once it is made safe, call us and we will handle the repair and recommissioning as Gas Safe registered engineers.
What we do here

Fixed-price quotes, no hidden fees, and up to 18-year manufacturer guarantees on selected boilers.
EmergencyLockouts, error codes, pressure loss and no hot water. Diagnosed properly and priced before we touch anything.

Adey trained, using MagnaCleanse. Removes the magnetite sludge that is blocking your radiators and straining your boiler.

Air source and ground source. LCL Level 3 qualified with low-temperature heating design, which most installers skip.
EmergencyBurst pipes, active leaks, no heat, no hot water. Gas Safe registered and answering the phone 7 days a week.
Reviews
excellent service David was very polite and kept me informed throughout. Recommended
David came to do this job on a bank holiday which says a lot for his work ethic. He arrived with a smile, and brought complete professionalism to the task, did it quickly, and with high quality skill. David…
Had an emergency water leak, they responded immediately. Easily the best plumbing and heating company I've used in the Crawley. very fairly priced
Questions
Yes. We cover Dorking itself across RH4 and RH5, and the villages around it, including Westcott, Brockham, Betchworth, Mickleham, North Holmwood, Capel and Holmbury St Mary. Dorking is around 35 minutes north west of our Crawley base. A number of the rural properties out here are off the mains gas grid, so tell us how your home is heated when you get in touch.
Yes. Dorking is around 35 minutes north west of our Crawley base, which is exactly why we will not promise an arrival time we cannot keep. Ring us for a realistic estimate, and we will talk you through shutting the water off at the main stopcock while you wait, which limits the damage more than anything else. We are open seven days a week, and weekends carry no premium.
It is limescale. Dorking's water is very hard, typically 248 to 286 ppm, and the calcium and magnesium in it leave that white, flaky crust on taps and showerheads. The same scale is forming out of sight inside your boiler, cylinder and pipes. A water softener or scale conditioner on the incoming main protects all of them at once. We can fit either and explain which suits your home.
Boiler servicing starts from £105. In Dorking the annual service earns its keep, because scale on the heat exchanger acts as insulation and pushes running costs up long before anything visibly fails. The service catches that early, checks inhibitor levels and keeps the manufacturer warranty valid, since most manufacturers require a yearly service. Any repair it turns up is quoted as a fixed price before we start.
Often, yes. Rural properties around Dorking that run on oil or LPG are where a heat pump makes the clearest case. It still depends on insulation, radiator sizes and, in larger houses, whether an annexe or outbuilding runs off the same system, because that load has to be designed in from the start. Our engineers hold the LCL Level 3 award for heat pumps, and nothing gets recommended until we have measured the heat loss of each room.
Gas Safe registered, fixed prices, and open seven days a week. Tell us what is wrong and we will tell you what it costs.