This is a good news and bad news review.
We purchased a furnace and air conditioning protection plan from Reliance. This was the first time we used the plan to have our furnace serviced. The good news is that a Reliance sub-contractor did a thorough inspection of our furnace on a Friday afternoon. The technician discovered faulty venting, tagged our furnace and turned the gas off.
The bad news is Reliance sent out different technicians the next day (Saturday) to fix the venting, who were not experienced in furnace repair. They discovered that the venting needed to be replaced right into the furnace itself and were unable to resolve our issue, as they are experienced water heater technicians. The part required to fix our furnace is at a warehouse, which is closed on Sundays, and so the part is not accessible until Monday. So no heat all weekend.
We escalated the issue and the service manager was helpful. Between her help, and the thorough inspection by the sub-contractor, we're giving Reliance 3 stars.