Nasa Air Scrubber Installation Benefits

[Raj Vajir]

I have installed all new central AC units from this single vendor which I like; for 4 of my properties.  I have a bi-yearly contract with them to maintain the units and they currently have a new policy where they check for mold in the duct work by an intrusive method and they are finding slight mold growth and are recommending this device called Nasa Air Scrubber (~$1200 per unit).  Suppose to last 5 years with 2 year bulb replacement needed (~$300 each).  My properties are about $1200-$1400 avg rent.  Trying to figure out how bad small mold growth can affect tenant health and see if the cost is justifiable.  This test isn't normal for most AC companies according to them since its a bit intrusive and expensive to re-patch the cutting of the duct so most don't do it.  Want to see how legit this issue is and why its not a big concern for other vendors.  Any feedback is appreciated in advance.

Thank you