Twistedsanity Posted February 11, 2017 Report Share Posted February 11, 2017 Anybody have any experience with these? I've got a 1930's house with huge air brick type holes in all the bedrooms where my heat escapes and want to block them in, clearly they were put there for a reason and I'm assuming it's to prevent damp and condensation? So if I remove them and fit a piv system would this suffice? The part that I can't get my head around is that it "recovers lost heat from the loft area", my loft is like the freezer at Iceland on a good day and pumping freezing air back in doesn't seem like it's going to help make my home warmer? Quote Link to comment Share on other sites More sharing options...
Yellow Bear Posted February 11, 2017 Report Share Posted February 11, 2017 Have fitted a system and it works well - spreads the heat through the house as well. Although the loft is cold it is not as cold as outside - when you block the vents leave a small vent - the positive input needs to go somewhere- also have the trickle vents on the downstairs windows open a crack. The input levels are relatively small but it pressurizes the house and yes you do need to heat a small amount more but this allows for better moisture pick up. We started fitting similar systems about ten years ago and they work well. Quote Link to comment Share on other sites More sharing options...
Twistedsanity Posted February 11, 2017 Author Report Share Posted February 11, 2017 Thanks, if I have to leave an opening for ventilation and trickle vents open that should prevent condensation anyway? I think I'll block them up one at a time and see how I go Quote Link to comment Share on other sites More sharing options...
butchdickason Posted February 11, 2017 Report Share Posted February 11, 2017 Have sent you PM. Butch Quote Link to comment Share on other sites More sharing options...
Yellow Bear Posted February 11, 2017 Report Share Posted February 11, 2017 Thanks, if I have to leave an opening for ventilation and trickle vents open that should prevent condensation anyway? I think I'll block them up one at a time and see how I go Not to the level you need without PIV Quote Link to comment Share on other sites More sharing options...
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