Boiler Installation
Whether your old boiler has given up or you're planning ahead, we design and fit boiler systems that heat your home properly and run reliably for years to come. Our team handles every step, from the first survey to the final handover, so you're never left guessing what's happening in your own house.

What's included in a boiler installation
From the first survey through to the final safety checks, here's what a proper boiler installation with us covers.
Boiler Surveys & Sizing
We assess your home, hot water demand and existing pipework to recommend the right boiler type and size before any work starts.
Combi, System & Regular Boilers
We install the boiler type that suits your property and household, matched to your radiators, hot water cylinder or existing system.
Old Boiler Removal & Replacement
Safe disconnection and removal of your old unit, including flue and associated pipework, before the new boiler goes in.
System Flushing & Controls Setup
Flushing the system, fitting a magnetic filter where needed, and setting up thermostats or smart controls so everything runs efficiently.
Getting your heating and hot water right, without the upheaval
A boiler installation isn't just swapping one box for another. It's the heart of your home's heating and hot water, so getting the sizing, positioning and setup right from day one matters. We start with a proper survey of your home, taking into account insulation, the number of bathrooms, your existing radiators and how much hot water you actually use, before recommending a boiler that fits.
If you're replacing an old boiler, we'll safely disconnect and remove it, including the old flue where needed, then prepare the space for the new unit. That means fitting brackets or a base, checking clearances, and making sure the flue route and ventilation meet current regulations. The new boiler is connected to your gas, water and electrical supplies, flushed through, pressurised and commissioned properly, with every safety check carried out before we call it finished.
A boiler installation should leave you with reliable heat and hot water, not a list of things to worry about.
We know the questions that come up before people commit: will it be disruptive, will floors need lifting, how long will the hot water be off, and what happens if something goes wrong afterwards. We talk through all of that upfront, so there are no surprises on the day. We are Gas Safe registered for domestic gas work, registration 568345, and an accredited Vaillant installer, so gas work is carried out by our Gas Safe registered engineers and finished to manufacturer standards.
More information
We cover boiler installations across Brighton, Hove, Woodingdean, Worthing, Lewes, Shoreham-by-Sea, Haywards Heath, Seaford and Burgess Hill, working in all kinds of homes from Victorian terraces to newer builds. Older properties often need a bit more thought around pipework and access, and we factor that into the quote rather than springing extra costs on you halfway through.
Properly sized, properly fitted, properly explained, that's the whole job as far as we're concerned.
Once the boiler's in, we walk you through the controls and what to expect, including when it needs its first service. If you're also thinking about a bathroom refit or general plumbing work alongside a new boiler, it's worth mentioning when you get in touch, since we can often plan both together. Either way, get in touch and we'll talk through what your home actually needs, not just what's easiest to sell.
Recent work

Kitchen installation in central Brighton
A kitchen installation in central Brighton. We removed the existing kitchen, fitted a new Glow-worm boiler and relocated all of the plumbing and electrics before installing the new kitchen and fully renovating the space.

Kitchen renovation in central Brighton
A kitchen upgrade in central Brighton. The existing kitchen and the chimney were removed and the walls damp proofed, before all new plumbing and electrics went in along with a Vaillant boiler. Stone worktops complete the new kitchen.

Emergency boiler replacement in Woodingdean
An emergency boiler swap carried out in Woodingdean, Brighton.

Vaillant boiler and cylinder plant room installation
We installed this compact plant room as part of a full house refurbishment, centred on a Vaillant boiler with a low loss header, system pump and zone valves. It works alongside a Joule hot water cylinder and a booster set, with the wiring completed by an electrical contractor.

Plumbing, heating and gas for a full house refurbishment
We completed all of the plumbing, heating and gas work on this full house refurbishment. The job took in a new Vaillant boiler and a full heating system, an upstairs bathroom and downstairs shower room, and all of the kitchen and utility plumbing.

Vaillant boiler installation
Another Vaillant boiler installation completed by our team.
โFantastic experience all round, RK plumbing and heating installed a new valliant boiler and 7 radiators throughout my property. I could not fault them at all, incredibly knowledgeable, helpful, clean and tidy. The work was completed on time at the agreed price with zero hassle. I would recommend RK plumbing and heating and will look forward to using such a great company in the future. Thankyou Ryan and the team.โ
Bradley Chaston
โWonderful team.. Ryan, Jake, and Jonny are well organised team of plumbers, they communicated well throughout the process from quoting to installing my New Vaillant Boiler. Exceptionally clean, tidy workers and I would highly recommend RK Plumbing and Heating Southern Ltd.โ
Amanda B
5.0 average from 7 reviews
Worth considering
Boiler Conversion
Boiler conversions across Brighton, Hove and Sussex, from removing the old cylinder and tanks to fitting and commissioning your new combi boiler.
Boiler ConversionโBack Boiler Replacement
Gas Safe back boiler removal and modern boiler installation, including pipework, flue work and making good the old fireplace, across Brighton & Hove and Sussex.
Back Boiler ReplacementโBoiler Relocation
Moving a domestic boiler to a better spot in Brighton, Hove and Sussex, with pipework and flue rerouted and the appliance recommissioned in place.
Boiler RelocationโBefore you book
Straight answers to what people usually ask before getting a new boiler fitted.
How long does a boiler installation take?
Will I be without heating and hot water during the install?
Are you qualified to install boilers?
Do you only fit Vaillant boilers?
What's included in the price?
What happens before you hand the boiler over?
Do you cover my area?
Can you fit a boiler alongside a bathroom refit?
Let's talk about your boiler installation
Call us or send a message and we'll arrange a survey to find the right boiler for your home, with no pressure to decide on the spot.
Call 01273 911551