What is an unvented hot water cylinder?

Unvented cylinders operate directly from the mains water supply, providing a high pressure flow of water and can use an immersion heater to supplement the heating of the water. An unvented cylinder has built in safety measures to help support the high water pressures.

Professionally qualified unvented cylinder fitters

MDL Plumbing and Heating are professionally qualified unvented cylinder fitters. Trained to the highest standards our engineers can help you choose the correct system for your needs.

Why choose an unvented cylinder

The advantage of an unvented cylinder is that no additional tanks are required. Hot water can be provided constantly by the cylinder at mains pressure. Also, an unvented cylinder can be positioned in any suitable location as no other forces such as gravity are affecting the flow of water. The fact that an immersion heater is used to heat the water means that there is less reliance on the boiler.

Why choose MDL

MDL Plumbing and Heating are professionally unvented cylinder specialists able to help you pick the correct system for the room you're trying to heat.


Our specialised services

MDL Plumbing and Heating specialise in central heating systems, boosted hot water systems, underfloor heating, unvented cylinders, boiler maintenance together with wetrooms, bathrooms and solar panels. Our fully qualified professionals are fully qualified in advising on providing the best systems to keep your home or office warm.
Our Gas Safe Register (CORGI registered) engineers are qualified to work legally and safely on your gas appliances.

Underfloor Heating Systems

Underfloor heating systems designed to keep you warm, hidden out of sight, suitable for any room.

Bathroom Installation

Our team of professional bathroom designers can help you choose the right suite for your bathroom.

Boiler Servicing

Regular servicing can ensure that your boiler is safe and working efficiently.