Hi. I have 2k sq ft house and climate master unit. Been told it is sized fine etc. It is 6 years old. Worked great for four years now nothing but problems. Spent about 1k on last twelve months to try to fix. Still same issues. Ac not working. Had drains cleaned this week .now not working again. 2nd floor calling for cool air and none going there. 1st floor is colder than thermostat is set for but cold air blowing like crazy. Did notice not all vents on first floor have air blowing. I don't want to cut circuit to avoid losing any code but when tech was here Tues he said there was no code. Help!! He couldn't fix this issue so he is coming back at some point but I am concerned it won't help. Thoughts appreciated!! Ty in advance.