Keeping your fan on AUTO is the most energy-efficient option. If your fan runs continuously, moisture does not have a chance to drip outside. It blows back into your home and your AC works hard to remove extra moisture from the air. You’ll need to replace your furnace filter more frequently.

Supply air fans, intake fans, supply fan and make-up air blowers are used for specific situations where fresh and or clean make-up air needs to be replaced at a quicker rate than what would normally take place.

HVAC fans and blowers are used to move air through heating, ventilating, and air conditioning (HVAC) systems. They are an integral part of the air handling systems that bring or draw fresh air into buildings.

Supply ventilation systems, on the contrary, move air into the house. Exhaust ventilation work by depressurizing the building; fans create negative pressures into the living space, which brings outside air into the house through dedicated vents or, in many cases, through leaks in the building envelope.

Supply-Only Ventilation = Fresh Air Supply System The air is typically introduced at the return duct ahead of the air handler, so the outdoor air is filtered before distribution. The outdoor air will also be conditioned when introduced coincidental with space conditioning operation.

Pros to Running Fan on Air Conditioner Continuously: Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan. Leaving the fan on 24/7 ensures cleaner air, as the air is pulled through the filtration or UV light system.

Whether you’re dealing with a small kitchen mishap or your cigar-smoking uncle, an electric fan can be a savior. Use your pedestal or table fan to suck up the smoky air and blow it out an open window or door. Pointed in the right direction, it can act as an exhaust.

Ventilation is part of HVAC (heating, ventilation, and air conditioning) that provides comfort and good air quality. It’s important to choose an HVAC company that understands correct ventilation as well as heating and cooling.

When selecting a fan, criteria include airstream characteristics, capacity, pressure, power, and efficiency. The fan installation is between ± 1,000 feet elevation above sea level (asl). Dfe = [1 – (6.73 x 10 –6) (z)]5.258 where z = elevation in feet.

The fan setting on your thermostat controls your HVAC’s system blower. The blower helps circulate hot or cold air throughout your home until the temperature on the thermostat is reached.

The supply fan is used to draw fresh air into a space and can be used as an aggressive substitute to intake dampers and louvres. Fresh air supply fans also known as make up air fans can be used when exhaust fans are present and fresh air is needed to equalize the pressure in the room.

Fresh air supply fans are essentially an exhaust fan rotated 180º in the wall and typically mounted in a cabinet with a powered damper. The supply fan is used to draw fresh air into a space and can be used as an aggressive substitute to intake dampers and louvres.

A duct fan is a propeller-style fan that is housed inside a heating, cooling or ventilation duct.

Heating, ventilation, and air conditioning (HVAC) systems supply heated and cooled air to different areas of a home or building. Each room requires a supply and return vent, or grill, to distribute air from HVAC ducts into the space, then collect exhaust air and transfer it outdoors.