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The nozzle is located above the coil (upstream) in the supply. Is this still a concern?
Thanks.

Hi,
Our HVAC system has a heat pump + variable speed fan gas furnace and there is a A-coil in the supply.
I am having a humidifier (Trane truesteam) installed and there is no space below the...

In summary,

ERV powers on the furnace fan whenever the ERV comes on. Fresh air from outside is ducted to the return of the furnace (please see previous post) so this should be the default...

The install completed yesterday but I am not sure if it is working the way it is intended to and if something needs to be changed with the low-voltage wiring. It is ducted such that fresh air from...

Thanks for the useful pointers.
Is CO2 a reasonable proxy for other indoor pollutants? In other words, which is the major pollutant inside a house in general (ignoring dust and pollen that we can...

After a typical night in the room with doors closed it is over 1200 ppm. In the landing area when we open the interior doors it ends up around 700-800. RH is around 40-50 with temp in the 65-70...

This link suggests they should be at least six feet apart. Is this important?

The install is scheduled for tomorrow morning. I would really appreciate feedback on two questions.
1. How far apart (minimum) should the intake and exhaust be spaced apart?
2. Should both the...

Thanks for the suggestion. Actually I bought the CO2 monitor based on your suggestion and it was an eye-opener. Are there any issues with over-ventilating other than higher cost of operation? The CO2...

I got the monitor just a few months ago, so no there are no data points for winter yet. However, the windows always remain closed for extended periods of time during winter. The building is very well...

Hello,
I am in Portland, OR and I have the ERV installation scheduled early november. It will be a Trane Fresh effects 200CFM. Home is a 2700 sq ft home with a Trane XV90 (variable speed fan)...

Thanks for the suggestions. To begin, I am surely upgrading the in-line media filter.
It appears that the Honeywell F200 can also accommodate the Lennox HC16 20x25x5 media. But will the Lennox...

I am looking at page 3 of the manual and not sure I understand. In the independent installation, can it be put anywhere to tap into the duct work?
Also, for fresh air, wouldn't I need a heat...

Had a professional installer evaluate my setup today. Here is the current plan.

Install an in-line Honeywell F200E1037 Media Air cleaner 20x25. The current size is 20x20 but we are choosing 20x25...

First, thanks to all the excellent contributors (Breathe Easy and others) who have provided valuable information here. I am a home owner in Portland, OR. We have a Trane XV 90 and I was considering...