Last winter, I had planned a family party at my condo. The afternoon of my party, I still had a ton of grocery shopping, cooking, and cleaning to do. I was not cheerful when I woke up to blizzard conditions. Our neighborhood had gotten ten inches of snow overnight, and it was still falling steadily. The outside temperature had fallen to twenty degrees. Since I wanted a comfortable condo for my guests, I turned up the temperature control a bit before heading to the store. Because I had to shovel the driveway, brush snow off the car, and scrape the ice from the windshield, it took much longer than expected to get all of the groceries. The roads were a mess and traffic was moving absolutely slowly. By the time I made it back home, I was so low on time. I was anxious I wouldn’t get everything done before my many guests showed up. When I stepped inside the condo, I knew I had bigger complications. Although I had raised the setting on the temperature control, my condo was cold. The heating system was absolutely not running. Since my knowledge of HVAC service is limited to cleaning the filter and changing the batteries on the temperature control, I called a local Heating and Air Conditioning corporation for help. I explained my problems, and they promised to send a specialist right over. While I waited, I did some of the food preparation and started up the oven, hoping it would warm up the condo a bit. I was relieved when the specialist showed up, tested the oil furnace and was told that the problem was a simple buildup of dust. It took him about an minute to clean the multiple components, and then the oil furnace started right up.