A furnace blowing cold air is due to a failure of the heating element, according to Hannabery HVAC. In a gas furnace, this may be due to a problem with the pilot light or gas supply, while an electrical furnace could blo... More »

A heating furnace may blow coldair due to the wrong thermostat setting, a dirty filter, dirty sensor or simply clearing out the initial cold air in the vent. It's not unusual for a furnace to initially blow cold air befo... More »

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An electric furnace may constantly blow cold air when it has a broken switch, thermostat problems or one or more broken heating elements. The high limit switch may be stuck open as well. More »

The basic parts of a furnace are a heating element to warm the air, an air handler to blow air through the ventilation ducts in the home and a thermostat to control the furnace's activity. A gas furnace also requires a v... More »

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A horizontal furnace, commonly referred to as a horizontal delivery system, is a heating system that pulls cool air in from the left or right side, heats it, then vents it out the opposite side. The main advantage of a h... More »

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At RepairClinic.com, a heating element for a Carrier furnace ranges in price from $45.70 to $58.10, as of 2015. When ordering from this website, buyers have the benefit of a 365-day return policy and next-day shipping wh... More »

www.reference.com Home & Garden Heating & Cooling

The first known person to invent a forced hot air furnace was William Strutt, who invented a cast iron and brick hot air furnace in England in 1805; however, the first person who came up with the idea of circulating warm... More »

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