[Greenbuilding] small in line heat pump

[John Straube]

Thats a tough one Mr Abrams
To deliver 12 KBtu you need about 400, preferably 450 cfm.  So what kind of ERV is it? most residential scale ERVs are like 50 to 150 cfm to serve normal size homes. 400 cfm ERV must be for a commercial use?
If you are talking water source HP, Trane  and Florida Heat Pump (now bosch) makes a line of water to water heat pumps that small, and you use a stadard coil in the air stream.
For air to air, all of the standard split units (meaning you can put the coil in a duct airstream) start at 18 kBtu/hr.  Which requires a lot more airflow yet again. But Goodman Trane Carrier all make units at 1.5 tons, they are just not that efficient.

On 12-03-22 11:43 AM, Alan Abrams wrote:
> anyone know of a small capacity (12K - 18KBtu) heatpump, suitable for installation in line with an ERV?
>
> -a
>
>
> *Alan Abrams**
> Abrams Design Build LLC*
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-- 
Prof. John Straube, Ph.D., P.Eng.
Faculty of Engineering
Dept of Civil Engineering / School of Architecture

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