
Boiler installation, servicing and repairs, bathrooms and emergency plumbing across Hemel Hempstead, Berkhamsted, Kings Langley and Tring. Fixed prices in writing, and a 24-hour line for leaks and loss of heating.
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Six services, each carried out by our own employed engineers. Every price is fixed in writing before we start.

Burst pipes, leaks, blocked toilets and no hot water, answered day and night.
Find out more about Emergency plumbing
A new boiler sized for your home, fitted in a day and registered for its full warranty.
Find out more about New boilers
Annual services and breakdown repairs for all the main boiler brands.
Find out more about Boiler servicing and repairs
New radiators, power flushing, smart controls and fixing cold spots.
Find out more about Radiators and central heating
Complete bathrooms and shower rooms, from first fix to the final seal.
Find out more about Bathroom installation
Unvented cylinder installation, servicing and repairs for strong showers.
Find out more about Hot water cylindersRecent jobs, photographed on the day we finished, labelled by town.






“If we would not be happy with it in our own homes, we do not leave it in yours.”
Anjali trained as a plumbing and heating engineer at college in Watford and spent eight years with a large heating company before starting Gade Valley in 2014.
She still surveys most new boiler jobs herself, and she answers the emergency line on alternate weekends. The business is named after the river that runs through Hemel Hempstead, a few minutes from our base in Apsley.
Anjali MistryFounder and heating engineer
Meet the teamWhat happens from the moment you call to the day we sign the job off.
A member of our team answers, asks what has happened and gives you a time for the visit. For emergencies, we tell you how to make things safe while you wait.
Your engineer arrives in the agreed window, finds the cause and gives you a fixed price in writing before any work starts.
We protect your floors, do the work to the standard we would expect at home, and leave the room as we found it.
You receive the paperwork, the guarantee and a reminder when the next service is due.
Short films recorded by our customers, captioned and played on our own player.



Demonstration badge. A live site shows the engineers' own registration and links to the public register.
Check the register (opens in a new tab)Demonstration badge for an approved plumbers' scheme, linked to its public list.
Check the register (opens in a new tab)Public liability insurance for every job. We send the certificate with your quote.
On all our workmanship, plus the manufacturer's warranty on new boilers, which we register for you.
Checkatrade profile (opens in a new tab)TrustATrader profile (opens in a new tab)Facebook profile (opens in a new tab)Google profile (opens in a new tab)
We work within about twenty minutes of our base in Apsley, so an engineer is never far away.
We also cover Bovingdon, Leverstock Green, Abbots Langley, Northchurch and the villages in between.
Straight answers on price, timing and guarantees. If your question is not here, call the office.
Our standard visits are priced in writing before we start. The emergency call-out is £95 including VAT with the first half hour of labour, and a boiler service is £89 including VAT.
For emergencies, usually within 90 minutes. For routine work, we can normally visit within two working days.
The office is open on Saturday mornings, and the emergency line is answered 24 hours a day, every day of the year.
Yes. Everyone who works in your home is employed by us, trained by us and carries identification.
All our workmanship is guaranteed for two years. New boilers also carry the manufacturer's warranty, which we register for you.
Yes. We use dust sheets and floor protection, wear shoe covers indoors and clean up before we leave.
No. Every price on this site and in our quotes includes VAT.
Yes. Our engineers take card payments on site, and we also accept bank transfer.
Call the office, or send a few details and we will call you back to arrange a visit.
01632 960 731We reply within one working hour, Monday to Saturday.
Monday to Friday 8:00–18:00
Saturday 9:00–13:00