2012 Lennox air handler with straight AC Tenant explained the system is working properly now She said she reported this to Tabitha Verified correct operation while on site by cycling heat at the thermostat Incorrect filter size is being used currently Filter needs to be a 16x20x1 or a 16x25x1 Current filter is a 14x25x1. Incorrect width allows dirt to get around the filter and plug the coil and blower. Also noted condensate drain is installed incorrectly Drain requires a P-trap If the filter gets wet during air conditioning operation, installing a P-trap will remedy the situation
