Thank you. i will ask about the thermostat. it is new and is trane digital. So many things have gone wrong that may be the wiring is wrong. however, they keep telling me it is fine and it is supposed to cycle like that!. I am thinking of getting a second opinion. another question it is very cold in Va now, rather unusual. My home is about 2600 sq ft. I was told this produces 50,000BTU. Is this sufficient to maintain a temp of 70 degrees. i find that in this extreme cold, it cannot go higher than 66-68. I never really noticed this in all these years i lived here