Boiler Replacement & Installation

Helping Brighton & Hove homeowners replace old or inefficient boilers, carried out by Gas Safe registered engineers accredited by both Worcester Bosch and Vaillant.

Gas Safe Register
Vaillant Accredited Installer
Worcester Bosch Group Accredited Installer
Rated 10 out of 10 for excellent service on Checkatrade
Rated 4.9 stars by customers on Google

Signs you may need a replacement

  • Your boiler is more than 10 to 15 years old
  • You are facing frequent breakdowns or repairs
  • Your energy bills are rising without explanation
  • Your boiler is making unusual noises
  • You have inconsistent heating or hot water

If you smell gas or suspect a fault is unsafe, do not wait, contact the National Gas Emergency Service on 0800 111 999 and get in touch with us afterwards.

Not sure if yours needs replacing?

Ring us and describe it. We will tell you honestly whether it is a repair or a replacement.

Call us01273 110667Send an enquiry

24 hours a day, 7 days a week

What the process involves

  1. Home assessment

    We look at your current system, property and hot water needs.

  2. Boiler recommendation

    We suggest a boiler suited to your property, not a one-size-fits-all option.

  3. Safe removal

    The old unit is disconnected and removed safely.

  4. Installation and testing

    The new boiler is installed and fully tested before we finish.

  5. Handover

    We talk you through the controls and settings before we leave.

Most installations are completed efficiently, with timing depending on your system.

A Vaillant boiler fitted by On Heating, with a magnetic system filter on the return and parallel copper pipework clipped neatly to the wall above it.
One of ours, finished. The filter goes on at install, not as an upsell later.

Why choose On Heating for this

Gas Safe registered

All gas work is carried out by Gas Safe registered engineers.

Accredited Installer

Recognised as an accredited installer by both Worcester Bosch and Vaillant.

Brighton & Hove based

Local to the area we work in, not a call centre booking system.

Same team, new name

On Heating is Pierson Heating under a new name, same engineer and standards.

Boiler replacement & installation

What customers say about our boiler installations

250+ five-star reviews4.9 on Google10/10 on Checkatrade
Fantastic service – new boiler and heating system installed perfectlyCheckatrade 10/10

I needed a new boiler and central heating system. After getting a couple of quotes, I chose Lee from Pierson Heating. He took the time to explain the different options and helped me choose what would work best for my home. The installation of the new combi boiler, radiators, and pipework was done exactly as I wanted. I’ve already recommended him to friends and family.

Verified reviewerHove BN3 · Nov 2025
Fast and quality jobCheckatrade 10/10

Lee is very quick to respond, great with communication and scheduled in my boiler replacement as quickly as possible. The job was carried out efficiently and with complete consideration of looking after me as a customer.

Verified reviewerPortslade BN41 · Sept 2025
Boiler replacementCheckatrade 10/10

Boiler needed to be replaced, Lee and Adam sorted it all out, work was completed quickly and professionally. I was kept informed of what was happening at all stages. Very tidy and efficient workmanship and very trustworthy and considerate people. Very happy customer who will definitely use again, highly recommended.

Verified reviewerHove BN3 · Sept 2024
Boiler replacementCheckatrade 10/10

Extremely pleased with all the work involved in removing the old boiler and installing the new one. From the minute they arrived to the minute they left the whole experience was exemplary and I would have no hesitation in recommending them

Hove BN3 · Feb 2024
Replace boilerCheckatrade 10/10

Pierson heating installed our combi boiler, after many years of service and repair work for us it was time for our new boiler replacement. Great job, would highly recommend.

Verified reviewerBN43 · Mar 2023
Replacement Boiler and 4 Radiators InstalledCheckatrade 10/10

Pierson Heating were recommended to us by our son who had a boiler installed by them earlier in the year. The job took 3 days, which involved power flushing system, renewing 4 radiators, thermostat valves, changing some pipework, fitting new pump and wall thermostat, also installing a new boiler. Lee and Ewan worked very hard, they were friendly, competent and tidy, we have no hesitation in recommending Pierson Heating.

Verified reviewerHove BN3 · Nov 2021

More from Brighton & Hove customers

Across every job we take on.

I asked Lee at Pierson heating to do a boiler service. Lee was on time, very thorough and immaculate. I was emailed the gas certificate on the same day which is excellent service.

Called plumber at 4pm Wednesday who arranged to come at 10am Thursday. Clean, tidy and repaired tap.

It's always a pleasure dealing with Pierson Heating. Had a new boiler installed a couple of years ago and just recently had an additional radiator installed.

Lee arrived when expected and managed to solve both the issues we had quickly and professionally and for a competitive price. I would certainly use again and recommend to others.

The balanced flue fire I have was a problem from the start for Pierson Heating. Wrong parts were sort etc. The firm completed the job after many difficulties and the fire is now perfect.

Checkatrade 10/10Verified reviewer

A friendly team, they work very hard, all fixed properly, reliable guy.

Lee and his team did very careful and conscientious work. They were on time and reliable, and were also quick to procure the necessary parts to fix the boiler. I would recommend them very highly.

Checkatrade 10/10Verified reviewer

Very professional and tidy Lee is a rarity these days a nice guy and good at what he does.

Checkatrade 10/10Verified reviewer

Previously fitted new boiler and radiator. Quick, polite, efficient.

Checkatrade 10/10Verified reviewer

Excellent service, punctual and reliable, have used this contractor for several years with no problems.

Boiler replacement FAQs

How do I know if I need a repair or a full replacement?

This depends on the age and condition of your boiler and how often it has needed repairs. An engineer can assess your system and advise whether a repair or replacement makes more sense.

How long does a boiler last?

It varies by make, model, usage and how well it has been maintained, but boilers are generally considered for replacement somewhere in the 10 to 15 year range.

Do I get to choose the boiler brand?

We are an accredited installer for both Worcester Bosch and Vaillant, so those are the brands we are accredited to install. Get in touch to discuss what would suit your property.

Is a Gas Safe certificate included?

All gas work is carried out by Gas Safe registered engineers, in line with the legal requirement for gas work in the UK.

Need a new boiler?

Tell us what is going on and we will tell you what it needs. Gas Safe registered, based in Brighton & Hove, and no charge for the conversation.

Call us01273 110667Send an enquiry

24 hours a day, 7 days a week

Ready to sort your heating?