hvac fresh air intake

I had a Honeywell timer controlling the house ventilation. It started making clicking noises and the fan would turn on/off. I replaced with an iohvaccontrols FAVR-ENHANCED unit and that worked for a year. It now also clicks and turns the fan on and off - but does work if I set it to the 60...

Our builder installed a concentrix vent outside our house. We asked them to fix it because it was too low to the ground if we had a big snowfall. So they split the vent for intake and exhaust. See pictures. There is no screen or anything at the ends. Is this acceptable?

Hi All, Recently moved into this house that's about 20-some years old. This past summer replaced original furnace/Ac with 96% Carrier system; here's the furnace: https://www.carrier.com/residential/en/us/products/furnaces/59tn6/ We're in SE MI so just coming into cold season now. The...