Timpal

Yes house was def still drying out the first winter. Don't have any humidity readings, but was getting condensation on the older window frames. Reassuring to hear I'm not the only one not getting condensation. I'll double check the external air temp, just to make sure.. Thanks

Hi, Have been browsing the site and there seems to be a lot of collective knowledge here - so hope someone may be able to help! I DIY installed a MHVR system in our house a two years ago. The first winter I had a steady stream of condensate out of the machine. This (second) winter there is zero condensation and I cannot work out why. So if anyone could shine any light on what this issue might be - or indeed if there isn't one I would be very grateful. I've added some detail below - let me know if anything else if missing. Many thanks Tim Today I've checked some figures in the house to try and understand what is going on: Temperature inside 22 degrees C. RH 55%. Outside temperature 8 degrees C (its been lower and still not had any condensation even when its below 0C outisde). To me this would seem to be hitting the dew point and therefore causing condensation? MHVR is a Vent-Axia 438222 Sentinel Kinetic The filters are clean, the heat exchanger recently cleaned out. There is no evidence of any water inside the machine. I've checked the condensate drain and its not blocked (if I pour a tiny bit of water into base of machine it comes out the drain). The heat exchanger seems to be working fine - incoming air is appox 21.5 degrees C. Summer bypass is off. To give a bit of background to the space/ set up: - its a very simple set up - unit serves a two year old extension (75m2 kitchen, living, dining are). - one extract, one fresh air. Insulated ducting to outside. Unit is in the warm space. - air tight but beathable structure (lime render/ insulation on wood fibre/ timber frame). - air flow at 30%.