Open Vent Boiler FAQ

What is a open vent boiler?

Open vent Boilers are also known as Regular boilers & conventional boilers
Open vent Boilers heat your central heating system directly and produce hot water for your cylinder.

Here’s an example of a central heating and hot water system layout using an Open vent Boiler -


If you are replacing an older model of boiler, the chances are that you will have an open vent Boilers / regular boiler / conventional.

A typical open vent system incorporates a boiler, extended controls, a hot water cylinder which is often fed by a cold water storage cistern located in the loft and a feed and expansion cistern - also located in the loft.

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