Browse Forums Heating, Cooling & Insulation Re: Ventilation in bedrooms with dual glazed windows 18Jan 24, 2018 11:39 pm I agree, but can not agree with the prices we are charged here. A fan and a heat exchanger in a box cannot/should not cost the same or more than the ducted AC. The benefits of clean air are outweighed by the cost. I am trying to solve my issues on a small budget. But if I could stretch it to $10k, I would not spend it just on HRV system alone. Re: Ventilation in bedrooms with dual glazed windows 19Jan 25, 2018 1:18 am Sergey People in Russia and northern countries with cold winters have central heating. Keeping window open causes energy loses regardless who pays for them. Best option is to have heat recovery ventilation system installed if one can afford it Hmm. You would need to pay for HRV electricity power if you use it, too. I believe that having even a basic electric heater in a bedroom while having a window slightly open will be more energy efficient and cheaper than HRV even in the short run. Just make sure your bedroom door is well sealed to prevent droughts. What kind of heating system are you currently using for your home? PS. I know that some people are using cryptocurrency mining rigs for heating these days - they definitely pay off for their electricity + generate significant extra income You receive 800-1600 W of heating power with one rig So may be consider investing into one of those instead Re: Ventilation in bedrooms with dual glazed windows 20Jan 25, 2018 11:57 am =) don't think you would be able to sleep next to the crypto mining rig =) Heating burns oxygen and uses a lot more energy than HRV system does. Don't forget that with open windows comes noise as well. For heating/cooling of the bedrooms I use nothing currently. Just insulation and the temperature of the house. For pure ventilation purpose I could use a heat transfer kit to drive the air from another part of the house. Most likely be the living room that has an aircon/heater. But to add a bit of fresh air, I would add an in wall HRV like http://www.fantech.com.au/images/Brochures/Aerofresh.pdf - does 60m3/h on high setting but only uses 7W with heat recovery of 80%. I think this is really good in comparison to the heat loss/gain with having a window open More expensive option would be to add ducted AC and have it drawing air from the area where that in wall HRV unit is, so that fresh air is added to all the rooms I don't know them all, the first 2 top of your list are best known. Rylock is a good company, Stegbar is for sale. 4 16191 Brass fly wire, you will need to cut it, shape it and jam it into brick slots 1 7450 |