Boiler installation · Dorking & Surrey
A warmer home.
A clear plan.
Thinking about a new boiler? Gas Mark helps you explore the options, understand the work and plan an installation around your home. Straightforward advice from the first visit to the final handover.
Request online. Your appointment is confirmed by email after approval.
What does it cost?
All prices include VAT.
Boiler supply & fitting
From £2,400The final quotation depends on the boiler and installation work required.
We’ll confirm the work and charges with you before going ahead. Any additional repairs are discussed and agreed separately.
Request an appointment →Start with the right advice
Your home.
Your heating needs.
Whether you’re planning ahead or weighing up a replacement, we’ll help you understand the next step.
Ready for a change?
If you’re considering replacing your boiler, we’ll assess the existing setup and talk through suitable options for your home.
Make heating part of the plan.
Updating your home or changing how you use it? Discuss your heating and hot water needs before deciding on a new installation.
Let’s look at the options.
A fault doesn’t automatically mean you need a replacement. Tell us what’s happening so we can discuss whether a repair assessment is the right starting point.
A proposal you can understand
More than a boiler.
A plan for your home.
We look at your existing heating setup and listen to what you need. Then we explain the proposed equipment, work and costs, so you know what you’re agreeing to.
- Your heating and hot water requirements
- The proposed boiler position and connections
- Any additional work included in the proposal
- Controls and how you’ll use the system
- Installation timings and aftercare information
From first visit to warm radiators
Know what happens.
Every step of the way.
Having work done at home is easier when you know the plan. We’ll keep you informed throughout.
We visit and assess
We look at your current boiler and heating setup, discuss your needs and explain the options worth considering.
You review the proposal
We explain the equipment, work, costs and expected schedule before you decide to go ahead.
We install with care
We protect the working area, keep you updated and tidy up at the end of each day. Any planned interruption to heating or hot water is explained.
We check and hand over
We complete the installation checks and commissioning, explain the controls and talk you through the paperwork and ongoing care.
Your home matters throughout the job. We’ll discuss access, protection, waste removal and any making good as part of the installation plan.
Before you decide
New boiler.
Clear answers.
Every installation is different. A visit helps us give you useful advice and a proposal based on your home.
Request a boiler surveyDo I need a replacement or a repair?
That depends on the condition of your boiler and the problem you’re experiencing. We can discuss an assessment before you decide. For an existing fault or annual service, visit our boiler servicing and repairs page.
How much does a new boiler installation cost?
Boiler supply and fitting starts from £2,400 including VAT. The final cost depends on the chosen equipment and the work needed at your property. We’ll explain the proposed price, what is included and any additional work before you agree to proceed.
How long will the installation take?
The schedule depends on the existing setup and the changes involved. We’ll discuss expected timings after the survey, including any period when heating or hot water will be unavailable.
Can the new boiler go somewhere different?
Tell us where you’d prefer it during the survey. We’ll assess whether that position is suitable and explain the work involved before including it in the proposal.
What warranty will I receive?
The available warranty and its conditions depend on the boiler selected. We’ll explain the specific cover, registration arrangements and any servicing requirements as part of your proposal and handover.
Can I request a quote without calling?
Yes. Use our booking page to request a survey, choose a preferred date and arrival window, and include details of your current boiler. The appointment is confirmed by email once approved; the installation is arranged separately after you accept a proposal.
Based in Dorking
Boiler installation
across the local area.
We arrange visits across Surrey and nearby West Sussex. Include your postcode when enquiring so we can check the arrangements for your home.
See our coverage- Dorking
- Leatherhead
- Reigate
- Redhill
- Guildford
- Epsom
- Cobham
- Horsham
- East Horsley
- West Horsley
- Bookham
- Fetcham
Let’s plan your
new boiler.
Start with a visit and straightforward advice. Request your preferred appointment online.