In a heating cycle I noticed a strong sweet smell coming out of the registers but not in every air change. It feels like the ozone gas but a little different.
(It’s a one and a half year old system with electrical furnace “carrier”, with pleated MERV7 filter)
Does anyone know what that smell could be, what could cause the issue and how to get rid of it.
no air purifier, brand new home and system about year & a half old. There are 2 furnaces on the second floor, one for downstairs and another for upstairs and both are releasing the sweet smell when in heating mode