When I started up my furnace early November, it sounded something strange. Every time it cycled, it rattled for a short while. By December, that rattling was much louder and lasted far longer. I also noticed that the house wasn’t as warm as it was formerly. I was forced to set the thermostat to higher and more excessive temperatures, and the furnace was going longer and longer. There were cold spots in various rooms, and my heating bill was outrageous. When the furnace began to smell like it was burning up, I finally called an HVAC corporation and scheduled repair. They told me I must wait over a week for an appointment. The day prior to the appointment, the furnace quit altogether. When the HVAC technician viewed it over, he said that several parts needed to be replaced. He would have to order these parts, and they would take several days to come. Plus, the HVAC company ended up being so overbooked with repair message or calls, that I’d have to wait another week for service. The outside temperature was right around 25 degrees, so I couldn’t go any longer without heat. I ended up closing up most rooms in the house, and setting up space heaters in the rest. This situation was most unsuitable, and I was concerned that my pipes would freeze. The house was chilly and extremely unenjoyable. My whole family bundled up in our winter coats during for hours. I was very relieved when the HVAC contractor returned, replaced the broken parts, and got my personal furnace running properly again. From this point forward, if I notice even a minor problem with the furnace, For certain I will most certainly call for repair immediately.