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ronw
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  #1572006 14-Jun-2016 22:34
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If you want the best system on the market have a look at this site http://www.cleanaire.co.nz/

 

They market a true HRV system not one of the fake systems that suck warm air out of the roof space. Basically they have a vent at one end of house that sucks air from outside into ducting which is connected to a stainless Heat Exchanger. Every room in house has an input and output in ceiling which are ducted back to exchanger. The warm air in house is sent through the exchanger and the air is then exhausted out of the house at opposite end from fresh air inflow. The warm air in the exchanger heats the cold air from outside and which  is then injected into each room.

 

An amazing system that actually works. If you dont have heating in house you can have inline heaters in the fresh air line.

 

If you want to completely get rid of condensation/mold  and have a continuous flow of fresh air into every room this is the device.

 

 

 

 

 

 

 

t0ny:

 

Been doing some additional research. Some interesting facts:

 

The New Zealand Building Code requires homes to ventilate using outdoor air to maintain air purity. Ventilation systems that draw air from the roof space and not directly from outside do not comply with ventilation standard NZS4303:1990 "Ventilation for acceptable indoor air quality". They cannot be used to comply with the Building Code Acceptable Solution for ventilation.

 

and, a research report on ventilation systems states:

 

An ideal control system for forced air delivery from the roofspace clearly needs to take account of the temperature and humidity in both spaces. With this data, the system will be able to determine when operation will reduce the relative humidity in the building.

 

My PPV system doesnt appear to be getting the outdoor air at all :)

 





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& many Windows laptops, Desktops etc

 

 

 


 
 
 

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timmmay
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  #1572126 15-Jun-2016 09:34
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ronw:

 

If you want the best system on the market have a look at this site http://www.cleanaire.co.nz/

 

They market a true HRV system not one of the fake systems that suck warm air out of the roof space. Basically they have a vent at one end of house that sucks air from outside into ducting which is connected to a stainless Heat Exchanger. Every room in house has an input and output in ceiling which are ducted back to exchanger. The warm air in house is sent through the exchanger and the air is then exhausted out of the house at opposite end from fresh air inflow. The warm air in the exchanger heats the cold air from outside and which  is then injected into each room.

 

An amazing system that actually works. If you dont have heating in house you can have inline heaters in the fresh air line.

 

If you want to completely get rid of condensation/mold  and have a continuous flow of fresh air into every room this is the device.

 

 

 

That's the system I like too. I got a quote but didn't actually order it yet. There can be multiple inputs and outputs - for example there could be an extraction point in the bathroom, which tends to be warm and moist, which can boost winter heating from steam.


jonathan18
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  #1572140 15-Jun-2016 09:45
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timmmay:

 

That's the system I like too. I got a quote but didn't actually order it yet. There can be multiple inputs and outputs - for example there could be an extraction point in the bathroom, which tends to be warm and moist, which can boost winter heating from steam.

 

 

 

 

Can anyone provide an idea of the cost of installing such a system?

 

I've watched with envy many a Grand Design episode when they've put in these systems, and amazed how long it's taken them to reach NZ. I guess part of the problem is companies like HRV have done such a good job of selling their "solution".




timmmay
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  #1572157 15-Jun-2016 09:51
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From memory it was in the $3-4K range for a medium sized house, but that was a few years ago.


ronw
1222 posts

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  #1572378 15-Jun-2016 13:35
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Ours is around 10 years oils and was in the range of 2-3,000 obviously cost have gone up since then. They make different size hear exchangers so depending on how many inlets and outlets you want. One caution you need heating in your house to get the best regards. Otherwise it's cold air coming into every room. We have a fire and heat pumps and they work fine with the system.




Nokia 7 Plus
Nexus 6P 32Gb
Nexus 6 Phone
Nexus 5 Phone
Nexus 7 2013 Tablet
Samsung TAB A 8"
Samsung TAB A 10"

 

& many Windows laptops, Desktops etc

 

 

 


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