The Most Efficient and Quietest Oil Furnaces Available: Dave Lennox Signature® Collection You need an energy efficient furnace, which is why our Dave Lennox Signature Collection oil furnaces were built with variable speed motors. These motors adjust their speed based on the amount of heat needed which helps you save energy and soften operating sounds. Speaking of operating sounds, SilentComfort™ technology is another key feature in this equipment, keeping your home warm, cozy and quiet – unlike some standard heating systems. Find out more about the Dave Lennox Signature Collection oil furnaces we offer at O'Brien Heating & Air Conditioning in the Main Line below. To a system that will work best for your family, call us at 610-257-7035 or make an appointment online. SLO185V Oil FurnaceIt’s nice to be inside a warm home when the temperature outside is not exactly cozy. The SLO185V uses a Beckett burner, which provides extremely efficient fuel economy. The burner and variable speed motor combine to help the SLO185V oil furnace produce an 85% AFUE rating*. In addition, it has even met EPA guidelines to obtain ENERGY STAR® qualification. If you’re in need of a high quality and efficient furnace that will generate reliable heat for years, the SLO185V is the perfect choice. Efficiency Rating (SEER): 85Price Guide: $$$ Product Brochure Contact Us to Learn More Looking for someone to help with your oil furnace maintenance and repair needs? O'Brien Heating & Air Conditioning in the Main Line can do it all. Just give us a call at 610-257-7035 or use our online scheduler to make an appointment. * Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.