I spent 1,400 dollars to repair a system which was from the start undesirable. Then I had to pay 2,700 dollars for a new furnace which should have cost me 3,500 instead of the 4,100 which I paid. The last group of guys got it right and fixed our furnace yet the 1st group who failed to properly diagnose the cracks in the valves did a poor job and put our lives at risk by not properly diagnosing the cracked valves upon inspection!
