Dust stated the system randomly stops producing heat at random times, tech did notice the thermostat not engaging the system to operate when it was either set to cool or heat even after a 5 minute delay. Tech removed the thermostat off the wall, inspected it and secured it back to the wall and now the thermostat makes an immediate call for heat or cool. Heat strip amp draw is good, delta T is good. Tech recommends replacing a faulty thermostat. Tech attempted to contact eagles properties to provide a quote and was unsuccessful. Estimate will be sent along with today’s invoice. Filter was replaced due to being dirty/partially clogged, which may contribute into lack of airflow which causes the limit switch to open and stop producing heat at times.