The most common reasons for a furnace making a humming noise are dirt buildup, failing motors or gas leaks, according to Air Mechanical Inc. If a furnace is experiencing one of these problems, it needs repairs as soon as... More »

A noisy furnace blower usually indicates a problem with either the blower's electric motor or the blower wheel. Turn the furnace off, disconnect it from both the electricity and gas, wait for it to cool completely and th... More »

To find out why your furnace is making loud noises, you must first identify the specific noise. Some of the most common furnace noise problems include squealing, grinding, humming and rattling. These problems are commonl... More »

www.reference.com Home & Garden Heating & Cooling

One of the common reasons a ceiling fan makes an electrical humming noise is that the voltage the motor is receiving is too low. Many people install a dimmer switch to operate the fan with a variable speed. Replacing the... More »

To find out why your furnace is making loud noises, you must first identify the specific noise. Some of the most common furnace noise problems include squealing, grinding, humming and rattling. These problems are commonl... More »

www.reference.com Home & Garden Heating & Cooling

Gas furnace safety valves, used for preventing deadly gas leaks in your home, are attached to regulate gas flow to any gas-powered appliance. A gas valve detects unheated gas on its own and shuts off the gas supply in or... More »

www.reference.com Home & Garden Heating & Cooling

Reasons that a gas furnace leaks water can include a leak in the air conditioning evaporator or a leak in the humidifier. Water can leak in and around a high-efficiency furnace if the condensate drain tubes are disconnec... More »

www.reference.com Home & Garden Heating & Cooling