Black Friday Week - Save 10%
From fixing a leaking tap, to fitting a brand-new boiler… to upgrading your full central heating system or installing a NEW Luxury Bathroom — it’s all included in our BLACK FRIDAY SALE this week (LAST CHANCE)
Your Black Friday VIP Offer :::
✔ 10% OFF all heating & plumbing*
✔ Valid for existing customers only
✔ Offer ends: 31st January 2026
✔ Offer valid for use – once per Client
If you’ve been thinking about getting something sorted, or upgrading before the cold truly arrives — now’s the perfect time.
Simply Quote: “MC Black Friday E2512” when booking to save 10% *
Save 10% - Book Now
6,579 +
Local Clients
22 Years
Experience
0% Finance
Available
12 Year
Warranty
Award
Winning
16 Qualified
Engineers
Local: Central, North West London
& Buckinghamshire
Accredited installers
of ATAG, Glow worm Warmhaus,
Worceste Bosch, Vaillant etc
Save a massive 10% * off all plumbing & Heating this BLACK FRIDAY
With winter just around the corner, and the FREEZING cold setting in …. and with Black Fridays 10% off this week.
This is the perfection time to look at your Heating or even save 10% on the install of a Luxury bathroom!!!
Save 10% this week in our Black Friday week long sales…
At Mizzen we… “Guarantee to Find you the right Plumbing, heating or Bathroom solution for your unique bathroom, boiler and heating needs”
That’s our Promise to you!
We are your local “One-stop-Shop” for Plumbing & Heating Solutions +++ and EXPERT advice on choosing a New Boiler
Our dedicated Gas Safe Registered engineers are qualified to carry out a wide range of heating services.
With years of experience and also an expert understanding of the leading boiler brands – from Vaillant to Worcester Bosch – we offer an unrivalled plumbing & heating services from start to finish.
To prove it we offer all our customers a 12-month guarantee on our workmanship

June 11, 2025
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. I ended up requiring a new boiler. All priced up, and Paul and James fitted it a few days later. Neat and tidy. I wouldn’t hesitate to recommend them, in fact, I already have. They are fair and reliable. Thanks lads.

May 4, 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. He explained things through that would make the bathroom less prone to issues.
Gary and Matthew ripped the old bathroom out quickly and made the space good then installed everything really efficiently. Then the tilers came and did a fantastic job.
Gary came back once done to move a couple of bits and was exceptionally professional and skilled.
Finally, we had a leak issue which was a quick simple fix and was done about a week or so later.
Months in now, so happy with the bathroom.
I’d totally recommend Mizzen because from start to finish, it was a pleasure and the work is to a very high standard.

April 28, 2025
Great communication from the initial enquiry. Harrison arrived on site promptly, he was really polite and professional, and we were really pleased with the work carried out. I will definitely be using Mizzen again in the future! Many thanks.
April 1, 2025
Job well done. My parents found Harrison to be most polite, efficient & tidy when replacing a kitchen trap. Would thoroughly recommend Mizzen.

March 22, 2025
Charlie and Mizzen Construction are AMAZING!!!! I have had them do all my Boiler, plumbing and Kitchen installation for the last 17 years. I worked with many – but they are definitely the best by far! Always, prompt and friendly, he and his team of plumbing/heating experts are second to none. I highly recommend Charlie. 10/10

February 28, 2025
Our boiler was broken last week. We urgently needed a new boiler instalment as we have a toddler in house and are soon expecting a new baby. Mizzen has booked new boiler instalment in a short-notice. They came and did pretty clean and good work. I worked with Mizzen for a couple of other repairs in house before. They are always reliable, friendly and providing quality service. A safe pair of hands and highly recommended.

January 16, 2025
Very good experience with this company. The office was efficient and helpful. The visits were arranged with a minimum of delay.
The work was undertaken by a plumber called Levi who was very diligent and logical solved the problems in our underfloor heating system. He provided comprehensive advice on how to manage our now repaired heating system.

December 25, 2024
New boiler installation: fantastic experience from start to finish. Prompt Comms, great job and reasonably priced. Happy tenants too!
Can’t recommend the team enough.

November 25, 2024
Highly recommended – needed a tap replaced due to a leak, booked in for next day, arrived promptly, did a fantastic clean job and really good communications – thanks a lot!

November 1, 2024
Mizzen have been servicing my boiler since 2020. I called them in to change my megaflow type system to a combi boiler. The manager Charlie talked me through my options and gave me his recommendations and explained exactly what would happen. His colleagues Alan and Harrison were great and were experts in boiler fittings and pipework. If pipework were an art, they would be Michelangelo and Da Vinci. Such skilled and competent workers, truly committed and taking pride in their work. Their work was neat and careful, not rushed or slap dash. They also fitted my new radiator and new shower. Lovely Mark came to take away the old boiler, tank and all of the rubbish the next day.
Winter? 10% saving...? Why not replace that old boiler too?
- 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
Save 10% this Black Friday *
Speak to your Local Plumbing & Heating experts
+44 7931 748244
Save 10% and sort your Heating this Winter before it's too late
Get the right Heating solution in 4 easy steps
01
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
02
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.
03
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. Heat Tech always treats your house like our own home. Tidying up after and keeping a clean working environment.
04
Additional work
Our options.
- 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 Plumbing & Heating solution for you
Save 10% this Black Friday! *
We know that choosing the perfect Heating solution can be a daunting process – but we are here to 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 Heating & Plumbing Advice
- Fast Boiler Installations
- 0% Finance Available
- 2,000+ Satisfied Customers
Why choose Mizzen 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 Mizzen we pride ourselves on finding the Perfect Bathroom, Boiler or heating solution for your unique situation. Let us hold your hand to find you the right solution – at the right price.”
– Charlie Mizzen. Founder Mizzen Construction
Frequently Asked Questions
Want to know more about getting a new Heating solution or new boiler?
Here are some common questions
How much does a NEW 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 Construction 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