initial cleaning of clog only lasted twelve hours. Second technician misdiagnosed the problem. My plumber cleared drain lines attached to the furnace by blowing on them. I was charged $75 plumber bill for something that he said should have been handled by your tech.
Response from Great Lakes Heating, Air Conditioning & Electrical:
I am sorry to hear this. Please call me so that if appropriate we can send you a full refund and compensate for your inconvenience.
