Home ventilation / heating systems

Hi all

My eldest Bianca has just been diagnosed with Asthma (she is 3 in July). It seems that one of the triggers is cold air and given that the weather is cooling down of late she has begun coughing at night. For the past two nights we have put the heater on overnight in the hallway outside her room and that seems to have helped as she has now had 2 uninterupted nights sleep after about a week of waking 2 or 3 times a night coughing. As a result of this we are looking at getting a home ventilation system perhaps DVS or HRV and was wondering if anyone has any ideas on what is the best system to get and how much they have helped the asthma sufferers in your home.

Anything to help my baby sleep better as it sure makes for a happier girl.

I agree with AnnC, we love our HRV as well. It does seem to make the house drier and heats the house as long as the roof cavity temp is higher than the house temp which is most of the time except really cold winter days and winter nights. But with the house being drier it is alot easier to heat with the heat pump.
Oh, we don't have any allergy/asthma in our house either

Yep reducing dampness is the key! Its much harder to heat wet air! The worst thing for asthma is gas heaters cos they produce 1 litre of water an hour! Un-less u want to simultaneuously run a dehymidifier, with will cost more cos u then running 2 appliances, then its not effiencent at all.
A fire place or heat pump are much better. Also installing extractor fans in kitchen, bathroom and a rangehood over the stove will reduce condensation and air moisture.