Here is the situation:
My husband and I bought a 95 year old renovated farm house. When we bought it, it had a propane furnace on 1/2 of the house and standalone propane heaters on the other but no AC system. We are in North Texas and it gets 110+ in the summers and -5 in the winters. So one of our first priorities was a central heat/air system. We decided to use a well known nationwide company that offered great prices and servicing. They came out to our house, did an evaluation and sold us a Propane furnace and Electric AC unit for $$$$$ and scheduled an installation time. The contractors that were sent left (2) 2 ft x 1 ft holes where old return vents were, cut registers in wrong rooms, and stepped through the ceiling. Within 2 weeks we were having problems. We came home one evening to a HUGE water stain underneath where the furnace/blower was up in the attic and the AC not turning on at all. The contractors were sent back out and fixed it (blamed it on us for not changing the filter even though it had only been on 2 weeks). Within a week we had another water stain in the same place. They fixed it. Next day ANOTHER Water stain and more workers to fix it. This has been going on/off for last 6 months.
The other night we came home and the AC/furnace not working AGAIN. The contractors came back out and said that the furnace was set up for natural gas and not propane and it burnt out a switch and "shut off" the whole system. They converted it to propane and its working for the moment. The contractors say that the company didn't tell them that we were on propane. We had been using the furnace on the wrong fuel source for over 6 months! In the 6 months we've had the system there have been over 9 problems and I've had to call them over 25 times.
I haven't called the company back that sold us the unit and is responsible for servicing/warranty. I've been trying to let my temper cool down before speaking to them. After paying $$$ for something I had expected better quality and service and not constant inconveniences and frustrations for the last 6 months. And now I know that they put out entire family and home at risk with installing the furnace for the wrong fuel type. Even though there are safeties in place, so many things have gone wrong with the unit at this point I question whether they would have continued to work correctly.
What would you do in this situation? I'm at the end of my rope on dealing with this and need some advice on how to deal with the company that sold us the unit.