[Elecraft] OT Antenna location concern

[W2BLC]

I recently installed a Mitsubishi mini-split system and now have an 
antenna concern. I am about to install a new dipole that will pass 
within ten feet of one of the interior units (that would be measured 
through the wall). I already know that the system has produced no 
interference to any reception - however, I am concerned about how being 
close to a transmitting antenna will effect or not effect the 
unit/system. The antenna's location will meet safe human exposure limits 
for the bands/power used - 160/75/40.

I am assured by the installer that RF is not a problem and not to be 
concerned - of course that is not in writing. Attempts to email and call 
Mitsubishi have not been informative. Hence my question:

Has anyone had difficulties with the control systems of their HVAC 
systems caused by RF from a nearby transmitting antenna? I run the 
KPA500 all the time - so consider this a 600 Watt station.

Thanks,

Bill W2BLC K-Line