Broken boiler?
Let our expert team of Heating engineers will get your Central heating & hot water working again – Fast!
Need to replace your Boiler?
Want to save upto 50%
0% Finance Available
Don’t leave money on the Table!
Save £1000’s compared to a “overpriced” British Gas boiler installation. Also beware of cowboys plumbers. Save money and get expert impartial advice…
100's of options, solutions & budgets
Heating solutions you never knew existed
Ready to speak to an expert?
Our dedicated Gas Safe Registered engineers are qualified to carry out a wide range of heating services.
With years of experience & an expert understanding of the leading boiler brands we offer an unrivalled service from start to finish.
Book your Boiler Replacement
Replace your boiler today! We'll ensure your New Boiler is the Perfect Heating Solution for your Home...
Choosing a new replacement boiler can be confusing. Poor installation, low quality products…. no warranties or guarantees, and rip-off plumbers that install systems that won’t work as promised.
British Gas overcharges and cowboy plumbers will install an inferior boiler that will leave you out in the cold.
At Mizzen we… “Guarantee to Find you the right solution for your unique boiler and heating needs”
That’s a Promise!
I had a major leak from my boiler during heavy rain fall. Charlie talked me through what I needed to do, out of business hours. What a gem.
June 11, 2025
Firstly, huge apologies for such a late review. Charlie and the team did our bathroom months ago. It was professional from the get go. Charlie was superb at advising and keeping costs realistic.
May 4, 2025
April 28, 2025
April 1, 2025
March 22, 2025
February 28, 2025
Which is the right NEW Boiler for you?
- Special Offer
From
£999
- Brand: Warmhaus
- 600 Combi 2
- Output: 20 kW
- Warranty: 5 years
- Special Offer
From
£1600
- Brand: Valiant
- Ecofit pure
- Output: 29.5 kW
- Warranty: 10 years
- Special Offer
From
£2100
- Brand: Worcester Bosch
- 8000+
- Output: 29.6 kW
- Warranty: 12 years
Book your FREE Boiler Quote
Speak to your Local Boiler Expert
+44 8000 436442
Find your Perfect Boiler
Get the right boiler in 4 easy steps
Boiler & Heating Assessment:
One of our Engineers will visit your home to understand your needs (property type, size, location) and recommend a suitable boiler size and type within your budget. or Click here for a Whats App call
Get a detailed Quote
You’ll automatically receive a bespoke tailored detailed quote with options outlining the boiler cost, labour charges, and any additional work or components needed.
Boiler Installation
Depending on complexity, installation can take as little as 4 hours or as long as 3 days. Replacing a combi with a combi is quicker, while back boiler conversions take longer. Mizzen always treats your house like our own home. Tidying up after and keeping a clean working environment.
Additional work
Full comprehensive power flush of Central Heating System,
Upgrade to smart boiler controls,
Upgrade to designer radiators
Note: New pipework, boiler relocation, or adding new components will be factored into the process & the detailed quote.
We’ll do what we can to get you the RIGHT boiler for you
Choosing the perfect boiler can be a daunting process – but we will assist you to make the right choice for your circumstances
With our expert guidance we’ll ensure you end up with the perfect Boiler & heating system for you. We work hard to make sure you get the best system at the very best price
- Expert Boiler Advice
- Fast Boiler Installations
- 0% Finance Available
- 2,000+ Satisfied Customers
Why choose Mizzen Construction over a weaker Competitor?
| Mizzen | British Gas | Glow Green | Pimlico | Boxt | |
|---|---|---|---|---|---|
| Family Business | ✅ | ❌ | ❌ | ❌ | ❌ |
| Local – in your Community | ✅ | ❌ | ❌ | ❌ | ❌ |
| 100% Unbiased Expert Advice | ✅ | ❌ | ✅ | ✅ | ❌ |
| Commission-Free Installers | ✅ | ❌ | ❌ | ✅ | ✅ |
| In-house Installers/Engineers | ✅ | ❌ | ❌ | ✅ | ✅ |
| Whole Market | ✅ | ✅ | ✅ | ✅ | ❌ |
| Smart Home Expertise | ✅ | ❌ | ❌ | ❌ | ❌ |
| 0% Finance | ✅ | ❌ | ✅ | ✅ | ✅ |
| Payment Plans | ✅ | ✅ | ✅ | ✅ | ✅ |
| “One-stop” Home Care Shop (Kitchens, Bathrooms, Extensions) | ✅ | ❌ | ❌ | ✅ | ❌ |
| Service Plans | ✅ | ✅ | ✅ | ✅ | |
| 24/7 Call Outs | ✅ | ❌ | ❌ | ✅ | ❌ |
| Mizzen “BEST Boiler” Guarantee | ✅ | ❌ | ❌ | ❌ | ❌ |
We’ve Helped Families all over Buckinghamshire.... and We Want to Help You Next
“… At the Mizzen group we pride ourselves on finding the Perfect Boiler or heating solution for your unique situation. Let us hold you hand to find you the right solution – at the right price”
– Charlie Mizzen. Founder Mizzen Group
Frequently Asked Questions
Want to know more about getting a new boiler?
Here are some common questions
How much does a Boiler cost?
The cost of a new boiler can vary depending on the type and size of boiler you need, but you could have a brand new A-rated boiler installed from £1,699 . Get your fixed price quote, plus a recommendation on the right boiler for your home and budget
How Long Do Boilers Last?
The lifespan of your boiler can depend on a number of factors, but the average lifespan of boilers in the UK is between 10-15 years. However, a boiler’s actual lifespan depends on its quality, type, and maintenance
Should I swap my conventional boiler with a combi?
If your home currently has a conventional boiler, installing a new combi boiler could help you save space and be more energy efficient
I need new Boiler can you help?
With over 65 5-star Google reviews, you can trust Mizzen to help you find the right boiler for your home. With 16 Gas Safe Registered engineers means if you order a new boiler before 4pm, your fixed price, A-rated boiler could be installed as soon as the very next day.* Just answer a few straightforward questions about your home to get a fixed price quote.
Can We Help You?
If you have any questions about Boilers or Heating solutions, you can contact our amazing customer care team on phone NOW… or use our live chat in the bottom right corner