Furnaces

Compare nominal and actual furnace filter size, cabinet compatibility and MERV. Includes a replacement worksheet and clear limits for filtration upgrades.

Match a Goodman furnace model to the right manual family, document type and revision. Includes a manufacturer-document example and a private service record.

A soft blower hum, a click before ignition, a brief burner whoosh, and light duct popping as metal warms can be normal. A new loud bang at the furnace, grinding …

Regular furnace maintenance combines simple homeowner checks with an annual professional inspection. Homeowners can monitor the filter, thermostat, supply and return vents, alarm status, and the area around the equipment. …

Start by turning off the power supply to the furnace. Turn off the fuel supply for gas and oil furnaces. Remove the blower compartment access cover. Locate the reset button …

Your Carrier furnace might not be blowing hot air because it’s overheating, the pilot light is faulty, the thermostat is set too low, or the fan limit switch is faulty. …

Your carrier furnace not turning on could be due to a clogged filter, cracked igniter, faulty thermostat, tripped circuit breaker, or a faulty flame sensor. Cleaning the air filter and …

If your Lennox furnace doesn’t turn on, check to see the thermostat settings aren’t changed, the filter isn’t clogged with dirt, the condensate drain isn’t blocked, and the ignition sensor …

Your Goodman furnace depends on a constant gas supply to keep your house warm. When there is no call to gas, something is wrong with the furnace or gas supply. …

A Goodman furnace leaking water is a dangerous electrical hazard. The leak may be coming directly from the system or from connected parts. So, what’s causing the leak, and is …