[chbot] {Off topic} HRV is it worth it?

[Helmut Walle]

On 14/10/14 20:48, Mike Barnes wrote:
> Hi team
>
> What are peoples thoughts on an HRV system?
> The wife is convinced we need one after the woman's expo.
>
> [...] heat pump [...]

Hi Mike,

a pretty impressive collection of "peoples' thoughts" on HRV systems are 
available here: 
http://www.communityenergy.org.nz/how-effective-are-dvs-and-similar-systems-feedback-welcome/

A general question to answer, in order to take a good decision: do you 
need heat or ventilation, or both? These HRV systems (the duct / fan 
parts only) do not generate heat, they just move air around, either 
between rooms, or between the attic and the rooms inside the house. 
Whether that is an effective approach to heating the rooms depends on 
many things, including the build of the house including roof, and also 
available heat sources. A heat pump on the other hand provides a lot of 
heat but little ventilation (except for the little bit of air flow 
within the room where it is installed, unless you have a ducted system 
in the roof that takes care of heat and air flows).

Kind regards,

Helmut.