to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds

If your current fan is rated less than 50 CRM (cubic feet per minute), it should be replaced with a stronger one.

Many people don’t realize that bathroom exhaust fans are an important part of your home’s ventilation system. They are often used to eliminate foul odors and to clear condensation off mirrors, but their most important function is to remove moisture. Excess moisture can cause structural damage and rotting of walls and ceilings. But it also encourages the growth of molds, mildew, bacteria, dust mites and insects, which can be detrimental to your family’s health. An efficient exhaust fan can control these allergens and even lower air-conditioning costs by dehumidifying your house.

Your current fan may be ineffective

If you live in an older home, there is a good chance that your bathroom exhaust fan is too noisy, moves very little air, is not energy-efficient, uses high-wattage lighting and may cause back drafting of combustion appliances - and therefore should be replaced. Newer fans are quiet, energy-efficient and more effective at moving air and removing moisture.

A simple test

Here’s a simple test to see if your exhaust fan is drawing air. Hold a piece of toilet tissue up to the grill of the fan. A properly working fan will hold the tissue tightly to the grill. And to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds

If your current fan is rated less than 50 CRM (cubic feet per minute), it should be replaced with a stronger one.

alls and ceilings. But it also encourages the growth of molds, mildew, bacteria, dust mites and insects, which can be detrimental to your family’s health. An efficient exhaust fan can control these allergens and even lower air-conditioning costs by dehumidifying your house.

Your current fan may be ineffective

If you live in an older home, there is a good chance that your bathroom exhaust fan is too noisy, moves very little air, is not energy-efficient, uses high-wattage lighting and may cause back drafting of combustion appliances - and therefore should be replaced. Newer fans are quiet, energy-efficient and more effective at moving air and removing moisture.

A simple test

Here’s a simple test to see if your exhaust fan is drawing air. Hold a piece of toilet tissue up to the grill of the fan. A properly working fan will hold the tissue tightly to the grill. And to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds

If your current fan is rated less than 50 CRM (cubic feet per minute), it should be replaced with a stronger one.

be ineffective

If you live in an older home, there is a good chance that your bathroom exhaust fan is too noisy, moves very little air, is not energy-efficient, uses high-wattage lighting and may cause back drafting of combustion appliances - and therefore should be replaced. Newer fans are quiet, energy-efficient and more effective at moving air and removing moisture.

A simple test

Here’s a simple test to see if your exhaust fan is drawing air. Hold a piece of toilet tissue up to the grill of the fan. A properly working fan will hold the tissue tightly to the grill. And to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds

If your current fan is rated less than 50 CRM (cubic feet per minute), it should be replaced with a stronger one.

t, energy-efficient and more effective at moving air and removing moisture.

A simple test

Here’s a simple test to see if your exhaust fan is drawing air. Hold a piece of toilet tissue up to the grill of the fan. A properly working fan will hold the tissue tightly to the grill. And to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds

If your current fan is rated less than 50 CRM (cubic feet per minute), it should be replaced with a stronger one.

to make sure the air is leaving your house, place the open end of a large plastic garbage bag over the exhaust hood outside. When the fan is turned on, the bag should inflate within seconds

If your current fan is rated less than 50 CRM (cubic feet per minute), it should be replaced with a stronger one. For bathrooms up to 100 square feet (assuming eight foot ceilings), the HVI (Home Ventilating Institute) recommends that an exhaust fan provide 1 CFM per square foot to properly ventilate the bathroom. Larger bathrooms, or those with bigger fixtures such as steam rooms, hot tubs or saunas, need larger fans. Also, the longer the ductwork to the outside, the stronger the fan needs to be to draw the moisture through.

HVI sets the standard

When selecting an exhaust fan for your bathroom, choose the quietest, most energy-efficient fan available for the size you need. Research has shown that many people just won’t use a noisy fan. Look for HVI ratings on the packages for noise and energy efficiency to compare between models. Better fans have sound ratings of 0.5 sones or less and consume about 20 watts, while older units typically run up to 4 sones and 80 watts. If there is no HVI rating there is a good chance that it will be noisy.

A better fan can save you money

A fan suitable for continuous use, with replaceable parts and permanent lubrication is your best choice. And it is usually best to avoid fans with 3-inch exhaust ports and ducts, in favor of larger ones. You w