I just had a sure comfort furnace installed in Oct. 2012. It immediately starting running every 5 min. approx. The house is 2000 sq. ft. Only 1/2 the house is getting heat. Then I noticed insulation on the air filter. And can feel air leaks around some of the PVC pipes near the ceiling. I contacted the contractor, he came out and didn't inspect anything, and he refused to admit anything was wrong. And just left yelling at me. The county inspector came out after these problems and said some of the gas pipes leading to the gas line need to be upgraded, which is scheduled to be done. The major problem now is my gas bill is $20 more every month, I had a second opinion as to assess the other problems. And the second HVAC tech said the furnace needs to be upgraded. There is a crack in the cold air duct return system, and said it is running approx every eight min. The second HVAC tech also said I got a single stage furnace and need a double stage one. I did'nt get a digital themostat(still have murcury) I requested or a humdifier. He took the original estimate he wrote, and won't give it back. He also charged me for 8 hours of work that he was'nt here for. How can I resolve this or get my money back and get a proper furnace. I can't believe this is happening.