Plumbing & Heating
Emergency & Non-Emergency Plumbing & Heating Services
We provide comprehensive plumbing & heating services across London, from small repairs to full system installations, including central heating, boilers, and bathroom or kitchen setups.


Plumbing services
We cover everything from a leaking tap to a full design & installation of your entire plumbing & heating needs anywhere in & around London. Plus central heating & 1st and 2nd fixes of completely new refurbishments.
- Toilet, sink
- Leaks
- Dripping taps
- Megaflo services and installations
- Shower repairs / installations
- Bathroom installations
- Kitchen installations
A small leak over time can lead to costly building works and even damp and rot issues. If the plumbing system in your home is showing signs of deterioration, then we can help.
Heating
Our skilled & highly experienced engineers are on hand to help with all your central heating requirements.
If you simply need advice because you are not sure how your system works, or you want to control your heating from your phone – give us a call.
We are happy to look at larger projects & tenders too. We work with main contractors & can carry out complete 1st and 2nd fix of hot, cold, & central heating services. Boilers radiators & controls- on either refurbishments or new builds.


Our Heating Services
We offer a comprehensive range of services, including:
- Fault finding
- Boiler fault codes diagnostics
- Complete boiler diagnostics
- Fixing and tracing leaks
- Redesign
- Poor circulation in your heating system
- Full installation of boilers, heating systems, controls, and underfloor heating
- Automation
Power Flushing
In the simplest terms, a Power flush is the fastest, most efficient, & effective method of cleaning a central heating system. The principle is to create a powerful, flow of water using chemicals to agitate & breakdown debris, magnetite, & other bits of rust from the system.
That magnetite that builds up in the heating system will gather in the bottom of your radiator. So, if your radiator is cold in the bottom & it’s hot at the top, there is a problem and you may need a Power flush. We are happy to head out to you and assess this for you for free.


Carbon Monoxide Alarms
A tiny investment that brings a huge amount of peace of mind. Carbon Monoxide kills over 50 people a year in the UK. it is an odourless gas that is created when incomplete combustion takes place.
This can occur with gas appliances or a solid fuel appliance like wood burning fire. As well as regular maintenance of these appliances, it is strongly recommended that a CO (Carbon Monoxide) Detector is installed in the room of the appliances and the rooms that the flue(s) pass through.

Local Guide
March 13, 2025
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!

Soulla Pourgourides
March 13, 2025
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.

Dan Giddings
March 13, 2025
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.

Umut Selvi
March 13, 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.
Robin Piper
March 13, 2025
Job well done. My parents found Harrison to be most polite, efficient & tidy when replacing a kitchen trap. Would thoroughly recommend Mizzen.

Lesley Shearer
March 13, 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.

David Thomas
March 13, 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.

Glenn Burgess
March 13, 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

Neil W
March 13, 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.

Alistair Darby
March 13, 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.