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Customer Services
01494 482044

Collect in StoreOrder online & collect in store

Free Delivery Over 120* UK Mainland Excl Highlands

Nonfumo Flue Systems Limited
Carousel House, Wycombe Road, Stokenchurch, Bucks, HP14 3RP, UK Mainland (Excl Highlands).

Phone: 01494 482044

Fax: 01494 216158

Email: sales@fluesystems.com

Web: https://www.fluesystems.com/

HUGE SUMMER CLEARANCE NOW ON! MD Plus Twin Wall Flue at Clearance Prices in ALL Diameters. PLUS! Many Accessory Products are Being Cleared at Great Prices. CHECK OUR CLEARANCE PAGE FOR BARGAINS!

Combustion Air Vents

Regulation Change - Ventilation is not just needed for stoves over 5 kW and fires over 7 kW.

As well as the kW rating of the appliance affecting ventilation requirements, installers and suppliers must also take into consideration the air permeability of the property when fitting a vent for a heat producing appliance. Building Regulations give guidance on how to tell if you have a requirement for extra ventilation. It is unlikely that a dwelling constructed prior to 2008 will have air permeability of less than 5.0m³/(h.m²) at 50 Pa unless extensive measures have been taken to improve air-tightness. So if you are installing or supplying ventilation products you must check on air permeability first as extra ventilation will almost certainly be needed in newer properties - it’s no longer the case of "It’s a 5 kW stove or 7 kW gas fire so I don't need to provide ventilation".

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