Boiler Installation in Leatherhead
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Surrey
Plumber in Leatherhead, Surrey
Leatherhead and the villages around it, particularly Oxshott and Bookham, hold some very substantial property. The systems are correspondingly large, and they need designing rather than just replacing like for like.
- KT22, KT23, KT24Postcodes covered
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Local knowledge
What we see in Leatherhead homes
Large detached property, period houses in generous plots and considerable modern executive development. Multiple bathrooms are the norm rather than the exception, which effectively rules out combi boilers and puts these houses firmly into system boiler and unvented cylinder territory.
The defining issue in larger Leatherhead and Oxshott property is simultaneous demand. Three or four bathrooms running at once needs a properly sized unvented cylinder and adequate incoming mains flow, and a combi boiler simply cannot deliver it regardless of its stated output. We size these systems on actual measured flow and realistic simultaneous demand, and we are G3 qualified for the unvented work.
Hard water in Leatherhead and the Mole Valley
Leatherhead’s water is drawn from chalk and limestone aquifers, and it is exceptionally hard, averaging around 280 parts per million. When that water is heated, the calcium and magnesium drop out as scale. On a boiler heat exchanger the scale acts as insulation, so the boiler burns more gas to deliver the same heat, works harder than it should and eventually breaks down early.
The same scale works its way through the rest of the house. It clogs tap aerators and shower heads, calcifies the valves inside dishwashers and washing machines, and slowly narrows the inside of pipes until the pressure drops. An annual boiler service catches scale before it becomes a failure, and in most Leatherhead houses an ion-exchange water softener on the incoming main is worth considering.
Scale in larger Leatherhead, Oxshott and Bookham systems
The big houses around Leatherhead multiply the problem. A house with four bathrooms has four sets of shower valves and heads scaling at the same time, plus a large unvented cylinder whose coil and immersion collect scale every time it heats. Recovery times stretch, thermostatic valves start to drift and relief valves begin to weep. We service the boiler and the unvented cylinder together, and we are G3 qualified for the cylinder work. Our guide to unvented cylinders explains how they work.
Bathroom installation in Leatherhead
Adding a bathroom or an en suite to a Leatherhead house often changes what the hot water system has to do, not just the room. Before we design one we check whether the cylinder and the incoming flow can serve the extra outlets while the others are running. We also recommend shower valves with replaceable cartridges, so the parts this water scales can be serviced later rather than the whole valve being cut out of a tiled wall. See bathroom installation.
Period and listed homes in Leatherhead
Leatherhead has listed and period buildings alongside its modern executive homes, and the traditional plumbing in the older ones needs a different approach. Where pipes can run and where a flue can terminate are limited in an older building, so we survey in person before quoting rather than working from photographs. The same goes for older property in Headley and in Great and Little Bookham. See boiler installation and our guide to plumbing problems in older homes.
Smell gas in Leatherhead?
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
Our most requested work in Leatherhead
Bathroom Installation in Leatherhead
Full bathroom fit outs, shower rooms and en suites. Fixed price, proper waterproofing, tidy work.
Free fixed quote
Powerflush & MagnaCleanse in Leatherhead
Adey trained, using MagnaCleanse. Removes the magnetite sludge that is blocking your radiators and straining your boiler.
£400
EmergencyBoiler Repairs in Leatherhead
Lockouts, error codes, pressure loss and no hot water. Diagnosed properly and priced before we touch anything.
Fixed price quote
Heat Pumps in Leatherhead
Air source and ground source. LCL Level 3 qualified with low-temperature heating design, which most installers skip.
Fixed price quote
Reviews
What customers across the area say
Google
Had an emergency water leak, they responded immediately. Easily the best plumbing and heating company I've used in the Crawley. very fairly priced
Facebook
It was 11pm at night last night and we had water gushing into our kitchen due to the bad weather. So we called 'Mend your home' and they got to us within minutes to assess the situation promptly. The guy was…
Google
My loft boiler decided to implode overnight causing massive damage to my ceiling walls etc, David was round in no time stopping any further damage, isolating the fault, giving me options to replace, placing…
Questions
Plumbing in Leatherhead, answered
Why do my taps and shower heads lose pressure in Leatherhead?
Mostly limescale. Leatherhead's water is exceptionally hard, averaging around 280 parts per million, and the scale clogs tap aerators and shower heads and slowly narrows the inside of pipes. Descaling or replacing the aerator or head is the quick fix. If pressure has dropped gradually across the whole house, the pipework or the incoming supply needs checking, and we test the flow before recommending anything.
Should I get a water softener in Leatherhead?
In most Leatherhead houses it is worth it. An ion-exchange softener removes the calcium and magnesium, protecting the boiler, the hot water cylinder, shower valves and appliances such as dishwashers and washing machines. Leave the kitchen cold tap on unsoftened water for drinking. A softener does not replace the annual boiler service or the inhibitor in your heating system.
Can a combi boiler cope with a big house in Oxshott or Bookham?
Not if three or four bathrooms run at once. A combi heats water on demand and cannot keep up, whatever output it claims. These houses need a system boiler with a properly sized unvented cylinder and enough incoming mains flow. We measure the flow and work out realistic simultaneous demand before recommending anything, and we are G3 qualified for the unvented work.
Do you cover Ashtead, Fetcham and Bookham?
Yes. We cover Leatherhead and the KT22, KT23 and KT24 postcodes, including Fetcham, Great and Little Bookham, Oxshott and Effingham, plus Ashtead and Headley. It is around 40 minutes north west of our Crawley base, so we plan most work here in advance. In an emergency, call and we will tell you realistically when we can get there, and talk you through isolating the water.
What does servicing a boiler and unvented cylinder cost in Leatherhead?
A boiler service is from £105. An unvented cylinder needs its own annual check of the safety valves, expansion vessel and controls, which we quote at a fixed price before we start and can do on the same visit. In water this hard, that yearly check is also when we catch a scaling coil or a weeping relief valve before it becomes a failure.
Need a plumber in Leatherhead?
Gas Safe registered, fixed prices, and open seven days a week. Tell us what is wrong and we will tell you what it costs.