Retrofit an installed HVAC system

air-qualityremoval

My day care center, located in a 100+ year old house and only licensed for 28 kids, had an HVAC system installed about 15 years ago. Can it be set to vent ALL indoor air and send only cooled outdoor air throughout the house? I am trying to remove any airborne COVID particulate. I'm willing to give up comfort for safety during this COVID pandemic.

Best Answer

Yes, of course that could be done but you'll likely be looking at some significant ducting work. The air return, that normally comes from the living space will need to be re-routed and brought in from outside. Since that will create back pressure on the air handler blower, you will also need to duct the living space to the outside.

Often air-to-air heat exchangers are used in cases like to to minimize losses.

But to your point, I don't believe this is going to be in any way effective in removing COVID-19 virus particles from your space.