Two weeks before I put an offer on a house, I called Reliance to inquire about their furnace rentals since the house I was looking at had a rental already installed. I was told that they couldn't discuss the furnace nor options (removal/buyout/monthly rate) but I was to call once I was in the house for arrangements. I stupidly believed the guy and put in the offer. After the offer was accepted, I get an email from my realitor to contact Reliance. I called them and found out that I now either pay a monthly rate for the remainder of the contract or buy out the furnace and receive no warranty (I was told they were in the rental business and not the warranty one). They refused to remove the furnace. I called back repeatedly and asked to talk to a supervisor and was refused. I finally had a person call me back but they told me to contact my lawyer since it was "out of their hands". I did and the cost to litigate is more than the cost for the furnace.
Do not rental from these people. A seven year term with no ability to have it removed or canceled is a bad idea, especially if you are selling your house or going to purchase one with a rental unit. I have also had problems with their service with my water heater in the current house which makes me furious I have to pay this company any money for their predatory practices.