Gas engineer in Hemel Hempstead,for repairs, servicingand new boilers
Upgrading Hemel Hempstead's post-war homes with efficient boilers and reliable heating, from a Gas Safe registered team.
20 years
trade experience
24/7
emergency cover in Hemel Hempstead
£10m
public liability cover
Up to 10 yrs
boiler warranties
Local to Hemel Hempstead
Heating and gas engineering in Hemel Hempstead
Where we work in Hemel Hempstead
We cover Hemel Hempstead including the Old Town, Adeyfield, Bennetts End, Grovehill, Highfield, Leverstock Green, Warners End and Boxmoor.
Getting to you
We work from Banner House, 29 Byron Road, Harrow, and cover Hemel Hempstead as part of our regular Hertfordshire area. Our emergency service runs 24 hours a day, 7 days a week. When you call, we'll give you an honest arrival time for Hemel Hempstead based on that day's bookings, rather than a promise we can't keep.
Homes in Hemel Hempstead
Hemel Hempstead was developed as a New Town after the Second World War, so much of the housing dates from the 1950s and 1960s, alongside the historic Old Town and newer estates.
Heating services for Hemel Hempstead homes
Heating needs in Hemel Hempstead homes can include older boiler replacements, servicing, system upgrades and CP12 checks for landlords.
Services in Hemel Hempstead
Everything your heating needs, available in Hemel Hempstead
Boiler Installation in Hemel Hempstead
Worcester Bosch and Vaillant approved installs with up to 10-year manufacturer warranties.
Bespoke quote after survey
Get a quote for boiler installation
Boiler Servicing in Hemel Hempstead
Annual boiler service from £100 to keep your boiler safe, efficient and within warranty.
From £100
Get a quote for boiler servicing
Boiler Breakdown & Repair in Hemel Hempstead
Fast diagnosis and repair to get your heating and hot water back on.
Get a quote for boiler breakdown & repair
Emergency Boiler Repair (24/7) in Hemel Hempstead
Breakdowns and heating faults handled 24 hours a day, 7 days a week.
Get a quote for emergency boiler repair (24/7)
Landlord Gas Safety Certificate (CP12) in Hemel Hempstead
Fixed-price CP12 certificates for landlords at £75.
£75
Get a quote for landlord gas safety certificate (cp12)
Heating Fault Finding in Hemel Hempstead
Accurate diagnosis of cold radiators, pressure loss, noisy systems and control faults.
Get a quote for heating fault finding
Power Flushing & Radiator Installation in Hemel Hempstead
Clear sludge from your system and add or replace radiators.
Get a quote for power flushing & radiator installation
Hot Water Cylinder Installation & Repair in Hemel Hempstead
Unvented and vented cylinders installed, replaced and repaired.
Get a quote for hot water cylinder installation & repair
Heat Pump Installation & Servicing in Hemel Hempstead
Air source heat pump installation and servicing across Hertfordshire and London.
Get a quote for heat pump installation & servicing
Underfloor Heating Installation & Maintenance in Hemel Hempstead
Wet underfloor heating installed and maintained for even, comfortable warmth.
Get a quote for underfloor heating installation & maintenance
Smart Heating Controls in Hemel Hempstead
Smart thermostats and controls to manage your heating from your phone.
Get a quote for smart heating controls
General Plumbing in Hemel Hempstead
Leaks, taps, toilets, pipework and general plumbing repairs.
Get a quote for general plumbingWhy choose us in Hemel Hempstead
Proof, not promises
J&L Gas & Renewables Limited brings 20 years of trade experience to homes in Hemel Hempstead and across Hertfordshire. We're Gas Safe registered (number 961481), so you can check us on the Gas Safe Register before we arrive.
As approved installers for Worcester Bosch and Vaillant, we can offer manufacturer warranties of up to 10 years on new boilers fitted in Hemel Hempstead. Copper pipework carries our 10-year guarantee, and every job is covered by £10 million public liability insurance.
CP12 certificates are £75, boiler servicing starts from £100, and a combined visit starts from £150. If anything isn't right after an installation, we commit to putting it right until you're fully satisfied.
Gas Safe registered
No. 961481
Approved installers
Worcester Bosch & Vaillant
24/7 service
Breakdowns in Hemel Hempstead, day or night
£10m insured
Public liability cover
10-year guarantee
On copper pipework
Clear pricing
CP12 £75 · service from £100
Local issues
Common heating problems in Hemel Hempstead homes
Post-war construction
1950s and 60s homes may have original pipework, older radiators and sometimes awkward boiler positions. Upgrades often include new controls and flushing.
Old regular systems
Many homes still have loft tanks and cylinders. A combi conversion can free space if it suits the household.
Hard water
Hemel sits in a hard water area. Limescale affects combi boilers and cylinders.
Rented properties
Landlords need annual gas safety checks; we offer CP12s at £75.
Our process
How a job in Hemel Hempstead works, step by step
01
Call or send the form
Tell us what you need and your postcode. You speak to us directly, any time of day.
02
Clear price
CP12 £75, servicing from £100 and combined visits from £150; a written quote after survey for installations.
03
Gas Safe engineer attends
A registered engineer arrives, inspects and diagnoses before any work starts.
04
Work & testing
We complete the job, then test for safe, correct operation of heating and hot water.
05
Handover & guarantee
We explain what was done, register warranties and fix any installation issue until you're satisfied.
Many New Town homes in Hemel Hempstead still have parts of their original heating layout: pipework run under floors, older radiators and sometimes boilers in unusual positions. When upgrading, we look at whether the radiators are still sized correctly, whether the system needs a power flush, and whether controls should be modernised at the same time.
Converting from a regular boiler with a loft tank to a combi is a common upgrade in Hemel, freeing up the airing cupboard and loft. It suits many smaller households well. For families with more than one bathroom, we may suggest a system boiler instead.
Landlords can book a Landlord Gas Safety Certificate for £75, or combine it with a boiler service from £150.
Before you call, it helps to have your boiler's make and model, any fault code shown on the display and the pressure reading to hand. If you're a landlord, let us know how to arrange access with your tenant or agent. We'll explain the options and price before any work begins in Hemel Hempstead, and payment is by bank transfer on invoice.
Plan ahead
A simple heating checklist for Hemel Hempstead homeowners and landlords
Late summer: service the boiler
Book your annual boiler service before the heating goes on. Small faults found in September are far cheaper to fix than a breakdown in January, and the service record keeps your warranty valid. Servicing starts from £100.
Autumn: check radiators and controls
Turn the heating on early to check every radiator in your Hemel Hempstead home heats evenly. Cold patches at the bottom point to sludge; cold at the top means air. Make sure timers and thermostats are set for winter routines.
All year: keep certificates current
Landlords with property in Hemel Hempstead need a Landlord Gas Safety Certificate every 12 months. Diary the renewal date and book a combined certificate and boiler service from £150 to cover both in one visit.
Nearby areas
Also covering areas near Hemel Hempstead
From our Harrow base we cover Hemel Hempstead and the neighbouring towns across North West London and Hertfordshire.
See all areasBanner House, 29 Byron Road, Harrow, HA1 1JR
Questions
Hemel Hempstead heating FAQs
Can't see your question? Call 07843 900760; our emergency heating service runs 24/7.
Do you serve Hemel Hempstead?
Yes. J&L Gas & Renewables covers Hemel Hempstead as part of our service area across North West London and Hertfordshire, working from our base at Banner House, 29 Byron Road, Harrow.
How fast can you reach Hemel Hempstead?
It depends on the time of day and the jobs already booked. Call 07843 900760 and we'll give you a realistic arrival time for Hemel Hempstead before you commit.
How much does a boiler service or gas safety certificate cost in Hemel Hempstead?
Our published prices are as follows. A Landlord Gas Safety Certificate (CP12) is £75, a boiler service starts from £100, and the two combined start from £150. New boilers are quoted individually after a survey.
Do you offer emergency boiler repair in Hemel Hempstead?
Yes. We run a 24/7 emergency service for boiler breakdowns and heating faults in Hemel Hempstead. If you smell gas, call the National Gas Emergency Service on 0800 111 999 first.
Are your engineers Gas Safe registered?
Yes. We are Gas Safe registered (number 961481), and carry £10 million public liability cover on every job in Hemel Hempstead.
How often should I service my boiler in Hemel Hempstead?
Once a year, ideally before winter. Most manufacturers require an annual service by a Gas Safe registered engineer to keep the warranty valid, and it's the best way to avoid a breakdown in the coldest weeks.
Do you install heat pumps and underfloor heating in Hemel Hempstead?
Yes. Alongside gas boilers, we install and service heat pumps and underfloor heating in Hemel Hempstead. We assess your home first so you know whether a heat pump will keep it comfortable.
What warranty do I get on a new boiler in Hemel Hempstead?
As approved installers for Worcester Bosch and Vaillant, we can offer manufacturer warranties of up to 10 years on new boilers. Copper pipework carries our 10-year guarantee.
Do you cover Leverstock Green and Boxmoor?
Yes, along with the rest of Hemel Hempstead.
Can you replace a boiler in a 1960s house?
Yes. We survey the home and system first to recommend the right boiler.
Need a gas engineer in Hemel Hempstead?One call gets it sorted.
Gas Safe registered 961481 · 20 years' experience · £10m insured · 24/7 emergency heating service.