[TheSpiceIsLife]

HVAC folk ought to know about ERVs.

Type in HRV system in to your preferred search provider and hit the shopping tab.

Here in Australia they range from about 1500 Antipodean Dineros for a single room through-wall mounted systems, and around 5500 upward for a centralised unit. Plus installation costs, but HVAC install is one of my paid activities, so I mostly don’t pay that part.

NB heat pump is a more accurate term for refrigeration type air conditioners, as in cooling mode they’re ‘pumping’ the heat out of the inside environment and rejecting it outside.

But have you heard about brown?