Boiler Installation
Get Your Free Boiler Installation Quote
Fixed-price new boiler installations from Gas Safe registered engineers, with a Worcester Bosch guarantee of up to 12 years. Serving homes across Crawley, Sussex & Surrey.
- Free, no-obligation site survey & fixed-price quote
- Gas Safe registered & Worcester Bosch Accredited Installer
Why Choose Apex Gas & Heating For Your Boiler Installation
Our Accreditations
Accredited installers for the UK’s leading boiler manufacturers, and fully Gas Safe registered.
Benefits Of Installing A New Boiler
Lower Energy Bills
A modern A-rated boiler runs far more efficiently than an ageing model, cutting wasted energy and bringing your bills down.
Reliable Everyday Comfort
Even heat and consistent hot water throughout the house, with no cold spots or unpredictable pressure.
Fewer Breakdowns
A professionally installed new boiler means fewer unexpected faults and call-outs compared with an ageing system.
Lower Carbon Footprint
Energy-efficient boilers reduce carbon emissions, helping you cut your household’s environmental impact.
How Our Boiler Installation Works
No surprises, no pressure – here’s exactly what happens from enquiry to handover.
Free site survey
We visit your property to assess your current boiler, heating system and hot water needs, and recommend the right type of boiler for your home.
Clear, fixed-price quote
You’ll receive a transparent, no-obligation quote with everything included – no hidden extras and no pressure to commit on the spot.
Installation by Gas Safe engineers
Your new boiler is fitted by fully qualified Gas Safe registered engineers, working cleanly and tidily to minimise disruption to your home.
Full testing & commissioning
We pressure test, commission and thoroughly check your new system before switching it over, including a power flush where needed.
Handover & warranty registration
We walk you through your new controls, register your manufacturer warranty, and leave you with clear aftercare advice.
Gas Boiler Installations Overview
We supply and install a full range of gas boilers across Sussex & Surrey, including combi, system and regular (heat-only) boilers from leading brands such as Worcester Bosch, Vaillant, Baxi and Glow Worm. Every installation is carried out by fully qualified Gas Safe engineers, with manufacturer-backed warranties available.
Combi Boilers
Heating and hot water in one compact unit – ideal for most homes, with no need for a separate cylinder or tank.
System Boilers
Works with a hot water cylinder to deliver strong flow at multiple outlets – a good fit for larger households.
Regular (Heat-Only) Boilers
Pairs with a cylinder and cold-water tank – often the best option when replacing an existing traditional system.
Our Frequently Asked Questions
Answers to the questions we’re asked most about new boiler installations. Can’t see yours? Just get in touch.
How long does a boiler installation take?
Most straightforward like-for-like combi boiler swaps are completed in a single day. More involved jobs, such as moving the boiler’s location or upgrading the whole system, can take one to two days – we’ll confirm the timescale at your free site survey.
My boiler is over 10 years old – do I need to replace it?
Not necessarily, but efficiency and reliability both drop with age. During any service or repair visit, we’ll give you an honest opinion on whether repair or replacement makes better sense for your situation.
What boiler brands do you install?
We’re accredited installers for Worcester Bosch, and also fit Vaillant, Baxi and Glow Worm boilers – so we can recommend the best option for your home and budget rather than a one-size-fits-all answer.
Do I need a power flush before a new boiler is fitted?
Often, yes. If your existing system has a build-up of sludge, rust or debris, we recommend a power flush before installation to protect your new boiler and reduce the risk of future breakdowns. We’ll assess this at your free survey.
Do your installations come with a guarantee?
Yes. As a Worcester Bosch Accredited Installer, qualifying installations carry up to a 12-year parts and labour guarantee, alongside our own workmanship guarantee – provided the boiler is serviced annually.
Do you install boilers for landlords and rental properties?
Yes – we regularly install and service boilers for landlords and letting agents across Sussex & Surrey, alongside Gas Safety Certificates (CP12) to keep rental properties safe and compliant.
Ready For Your New Boiler?
Book your free site survey today and get a fixed-price quote with no obligation.