We've had our 4 ton unit for 8 1/2 years. Home is 1700+ sq feet. Came with a 10 years p & l warranty. We had to have the indoor unit replaced. It's installed. Till some wayward parts for the outside unit get here, we're having to use emergency heat. Em heat air is NOT warm like it used to be. It feels as "mild" as heat pump air. It's 35 degrees outside. The unit's new touch screen programmable) thermostat read 64 when I got up. Set the temp to 67. Twenty one minutes later, the indoor temp has gone up just one degree. This just can't be working right. Technician said that the em heat is fully operational. New Simonton Low E2 windows and there's no one running in and out of the house :) Tech will be here on Monday to replace parts that were leaking freon. OK, it took it 27 minutes to reach the set temp of 67. Does it sound like some heat strips aren't working? Would that account for the milder than normal output air? Twenty-seven minutes to warm the house 3 degrees??

Thanks,

Monica

ps...less 3 or 4 minutes after unit stopped, it came back on. Ran for 2 minutes.