DM Plumbing & Heating
DM Plumbing & Heating
  • DM Plumbing & Heating
  • General Plumbing Bristol
  • Emergency Plumber Bristol
  • Tap Repair Bristol
  • Toilet Repair Bristol
  • Bathroom Installations
  • Gas Engineer Bristol
  • Boiler Servicing Bristol
  • Boiler Repair Bristol
  • Boiler Installations
  • Power Flushing Bristol
  • Underfloor Heating
  • Unvented Cylinder Bristol
  • Heating Services Bristol
  • Radiator Services Bristol
  • Landlord Services Bristol
  • Areas We Cover in Bristol
  • Testimonials
  • Our Story
  • Pricing
  • FAQ
  • Blog
  • Plumber in Bristol
  • Plumber in Bedminster
  • Plumber in Clifton
  • Plumber in Long Ashton
  • Plumber in Redland
  • Plumber in Clevedon
  • Plumber in Whitehall
  • Plumber in Brislington
  • Plumber in Keynsham
  • Contact Us
  • More
    • DM Plumbing & Heating
    • General Plumbing Bristol
    • Emergency Plumber Bristol
    • Tap Repair Bristol
    • Toilet Repair Bristol
    • Bathroom Installations
    • Gas Engineer Bristol
    • Boiler Servicing Bristol
    • Boiler Repair Bristol
    • Boiler Installations
    • Power Flushing Bristol
    • Underfloor Heating
    • Unvented Cylinder Bristol
    • Heating Services Bristol
    • Radiator Services Bristol
    • Landlord Services Bristol
    • Areas We Cover in Bristol
    • Testimonials
    • Our Story
    • Pricing
    • FAQ
    • Blog
    • Plumber in Bristol
    • Plumber in Bedminster
    • Plumber in Clifton
    • Plumber in Long Ashton
    • Plumber in Redland
    • Plumber in Clevedon
    • Plumber in Whitehall
    • Plumber in Brislington
    • Plumber in Keynsham
    • Contact Us
  • Sign In
  • Create Account
  • Bookings
  • My Account

  • Signed in as:

  • filler@godaddy.com

  • Bookings
  • My Account

  • Sign out

📞 DM Plumbing & Heating

Signed in as:

filler@godaddy.com

  • DM Plumbing & Heating
  • General Plumbing Bristol
  • Emergency Plumber Bristol
  • Tap Repair Bristol
  • Toilet Repair Bristol
  • Bathroom Installations
  • Gas Engineer Bristol
  • Boiler Servicing Bristol
  • Boiler Repair Bristol
  • Boiler Installations
  • Power Flushing Bristol
  • Underfloor Heating
  • Unvented Cylinder Bristol
  • Heating Services Bristol
  • Radiator Services Bristol
  • Landlord Services Bristol
  • Areas We Cover in Bristol
  • Testimonials
  • Our Story
  • Pricing
  • FAQ
  • Blog
  • Plumber in Bristol
  • Plumber in Bedminster
  • Plumber in Clifton
  • Plumber in Long Ashton
  • Plumber in Redland
  • Plumber in Clevedon
  • Plumber in Whitehall
  • Plumber in Brislington
  • Plumber in Keynsham
  • Contact Us

Account

  • Bookings
  • My Account

  • Sign out

  • Sign In
  • Bookings
  • My Account
📞 DM Plumbing & Heating

Unvented Cylinder Bristol | Installation, Repairs & Servicing | DM Plumbing & Heating

Contact Us
Unvented cylinder services in Bristol
Hello

Reliable Unvented Hot Water Cylinder Specialists in Bristol

Searching for a reliable unvented cylinder engineer in Bristol? At DM Plumbing & Heating, we specialise in unvented cylinder installation, servicing, repairs, and replacement of unvented hot water cylinders across Bristol and the surrounding areas.

Find out more

Purpose of a Unvented Hot Water Cylinder

What is an Unvented Hot Water Cylinder?

An unvented hot water cylinder stores mains pressure hot water, delivering a powerful flow to showers, baths, and taps without requiring a cold water storage tank in the loft. Ideal for modern homes, an unvented cylinder installation offers several benefits, including: high pressure hot water, faster bath filling, powerful showers, better flow to multiple bathrooms, energy-efficient performance, and a space-saving design. Proper unvented cylinder servicing is crucial, and all installation and maintenance work must be performed by a qualified G3 certified engineer to ensure safety and efficiency, especially when it comes to unvented cylinder repairs.

Signs Your Unvented Cylinder Needs Attention

Contact us if you notice any of the following issues with your unvented cylinder: 


- Water leaking from the cylinder 

- No hot water 

- Low water pressure 

- Hot water running out quickly 

- Unusual noises 

- Expansion vessel faults 

- Overflow pipe dripping 

- Pressure relief valve discharging water 

- Water temperature fluctuating 


Ignoring these problems can lead to more expensive repairs later, so it's important to address them promptly with our unvented cylinder installation, repairs, and servicing services.

Contact Us

Unvented Cylinder Bristol | Expert Installation, Repairs & Unvented Cylinder Servicing


When choosing someone to work on an unvented cylinder, qualifications matter.


With DM Plumbing & Heating you’ll receive:

✔ G3 Qualified Unvented Installers

✔ Fully insured

✔ Honest advice

✔ Free quotations

✔ High quality workmanship

✔ Competitive pricing

✔ Local Bristol engineers

✔ Fast response times

✔ Friendly, reliable service


We pride ourselves on delivering professional workmanship with excellent customer service from start to finish.


G3 Unvented Qualified Installers Repair & Servicing Engineers

 We safely install and maintain all makes and models of unvented cylinders, providing reliable hot water solutions for homes of every size. Whether your cylinder has developed a fault, needs an annual service, or you’re upgrading your heating system, our experienced engineers are here to help.

We work across Bristol including Clifton, Redland, Bedminster, Bishopston, Brislington, Henleaze, Stoke Bishop, Long Ashton, Portishead, Keynsham, Filton, Bradley Stoke and surrounding areas.

Get in Touch

Unvented Cylinder Installation

Whether you’re replacing an old vented system or installing a new hot water cylinder during a renovation, we provide complete installation from start to finish.


We install cylinders from leading manufacturers including:

  • Megaflo
  • Vaillant
  • Worcester Bosch
  • Joule
  • Telford
  • Gledhill
  • OSO
  • Kingspan
  • Heatrae Sadia


Every installation complies fully with Building Regulations and is carried out to the highest safety standards.


Unvented Cylinder Repairs

No hot water?

Leaking cylinder?

Pressure problems?

Faulty expansion vessel?

Temperature issues?


Our experienced engineers quickly diagnose faults and carry out reliable repairs to restore your hot water as quickly as possible.


Common repairs include:

  • Pressure relief valve replacement
  • Expansion vessel replacement
  • Thermostat replacement
  • Immersion heater replacement
  • Temperature and pressure relief valve faults
  • Leaks
  • Air pressure recharge
  • Control valve replacement


Annual Unvented Cylinder Servicing

Annual servicing keeps your cylinder operating safely and efficiently while helping prevent unexpected breakdowns.


A typical service includes:

  • Safety checks
  • Pressure testing
  • Expansion vessel inspection
  • Valve testing
  • Thermostat testing
  • Temperature checks
  • Discharge pipe inspection
  • General condition report


Regular servicing can extend the life of your cylinder and reduce repair costs.


Areas We Cover

We provide unvented cylinder services throughout:

An unvented hot water cylinder stores mains pressure hot water, delivering a powerful flow to showers, baths, and taps without requiring a cold water storage tank in the loft. Ideal for modern homes, an unvented cylinder installation offers several benefits, including: high pressure hot water, faster bath filling, powerful showers, better flow to multiple bathrooms, energy-efficient performance, and a space-saving design. Proper unvented cylinder servicing is crucial, and all installation and maintenance work must be performed by a qualified G3 certified engineer to ensure safety and efficiency, especially when it comes to unvented cylinder repairs.

📞 Get in touch

Get reliable unvented cylinder services from DM Plumbing & Heating. Contact us today!

Get in touch

Frequently Asked Questions

Please reach us at dmplumbingheating97@gmail.com if you cannot find an answer to your question.

Yes. Manufacturers recommend annual servicing to ensure the cylinder continues operating safely and efficiently.

No. Unvented cylinders must be installed by a qualified G3 certified installer to comply with UK Building Regulations.

Most quality cylinders last between 15–25 years, depending on the manufacturer, water quality and servicing history.

Common causes include a faulty expansion vessel, leaking relief valve, pressure reducing valve faults or small system leaks.

Yes. We repair and service Megaflo cylinders alongside many other leading brands.

The cost depends on the cylinder size, manufacturer and the complexity of the installation. We provide free, no-obligation quotations with clear, competitive pricing.

Book Your Unvented Cylinder Engineer in Bristol

Contact DM Plumbing & Heating today to arrange your free quotation or book your unvented cylinder service anywhere in Bristol and the surrounding areas.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Better yet, see us in person!

Whether you require emergency repairs, annual servicing, or unvented cylinder installation, DM Plumbing & Heating is your trusted local choice for unvented cylinder services in Bristol. Our experienced, G3-qualified engineers provide safe, reliable workmanship along with honest advice and competitive pricing. From unvented cylinder repairs to installing complete hot water systems, we’re dedicated to ensuring your home has access to dependable hot water.

DM Plumbing & Heating

Risdale Rd, Bristol, BS3, UK

Tel: 07957416252

Hours

Mon

07:30 – 17:30

Tue

07:30 – 17:30

Wed

07:30 – 17:30

Thu

07:30 – 17:30

Fri

07:30 – 17:30

Sat

By Appointment

Sun

By Appointment

Examples of Our Heating Installations & Repairs

Hot water cylinder unvented system
DM Plumbing & heating hot water unvented cylinder installation
Hot water unvented cylinder installation
Hot water cylinder installation
Heating manifold with 2 port zone valve installations
Underfloor heating installation Bristol
Towel rail installation,Saltford,Bristol
Underfloor heating installation, Bath, Bristol
Unvented hot water cylinder installation, Kingswood, Bristol
Gledhill stainless steel water heater installed in a utility room.
Radiator Installation, Hotwells, Bristol
A white ThermaQ Evocyl hot water cylinder with copper pipes installed in a small room.
Room under renovation with underfloor heating installation in progress.
Room under renovation with floor heating panels being installed.
Room with underfloor heating installation in progress and construction materials.
Underfloor heating pipes installed in a room under renovation.
A technician fixing a boiler with tools and wearing safety gear.
Glow worm Boiler Installation, Bristol
Glow Worm compact 25 boiler installation, Bristol
Hot water storage unvented heater installation, Clifton
Worcester Boiler Installation
  • Emergency Plumber Bristol
  • Gas Engineer Bristol
  • Plumber in Bristol
  • Plumber in Bedminster
  • Plumber in Clifton
  • Plumber in Long Ashton
  • Plumber in Redland
  • Plumber in Clevedon
  • Plumber in Whitehall
  • Plumber in Brislington
  • Plumber in Keynsham

DM Plumbing & Heating

Risdale Rd, Ashton Vale, Bristol, BS3, UK

Tel: 07957416252

Copyright © 2026 DM Plumbing & Heating - All Rights Reserved.

Powered by GoDaddy

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

DeclineAccept