Replacing underfloor air vents which will stop a draught blowing under your floor, while allowing enough air for the vital ventilation. The DR21 a ir vent can be retro-fitted in minutes and can give you an added income stream when you carry out your annual service.

I think it is one of the most exciting developments in solid fuel installation in years, but don’t take my word for it, watch our video. We point a garden blower at a standard air vent and the DR21 a ir vent. The results speak for themselves. The postage cost for the return will need to be covered by yourself (please keep the proof of postage until your return has been processed).

The DR21 acts as a like for like swap – you fit it onto the outside wall in place of the existing vent. There’s no fancy mechanism or any moving parts that could get damaged. Just an incredibly clever design that causes the air to move in a zig zag pattern, slowing the rate of air flow down when the demand for oxygen is low, instantly reducing those terribly cold air leaks.

vi. In old properties is considered that there is enough ?leakage? so that a stove of up to 5kw does not require an air vent. I think this is the risk which extractor vents are designed to mitigate. I'm desperately trying not to use the phrase "nanny state" about this, but it's hard work.

GODFREYS I.T. LIMITED

Since no-one's said that you can't just tape the external vents shut, I'm going to give this a go. Depending on the effect this has on the draft, I may try putting some insulation inside the vent sleeve to help with this. Then I can happily use the windows for my ventilation, knowing that when I want a warm room, I can achieve it and when I want ventilation and air circulation it is completely within my control.