Additional Return Air Runs

Solve many system airflow problems

Insufficient return air is a very common problem for furnaces and central air conditioners. It is also a problem that can be easily cured. Ductwork, although it may look like artwork is really all based on air flow and math. If air ducts are not properly sized based on the amount of air needed to pass through them the system will not function properly or at its designed efficiency.
 
Every furnace or central air conditioner has a blower that pulls the air from within the home (The return side) through the heating and or cooling system and then pushes the air back throughout the home (The supply side).
 
The blower motors that heating and cooling systems use come in two basic types and a variety of sizes. The two types of blower motors are direct drive and variable speed.

Direct drive blowers typically have four or five speeds at which they can be preset to move the air throughout the home. The speeds are Low, Medium Low, Medium, Medium High and High. On a typical furnace, coil and condenser configuration the blower is set to operate on Medium Low for heating and Medium High for cooling. These settings are preset on the circuit board of the furnace and are engaged by selecting "heat" or "cool" on the thermostat. The blower speed settings can be adjusted by a trained technician to compensate for too much or too little air flow.
 
A variable speed blower motor automatically adjusts the blower speed based on several factors, like the stage the furnace or air conditioner is operating in, the static pressure inside the duct work and the temperature difference between the current indoor temperature and the desired indoor temperature. Variable speed blower motors use only a fraction of the electricity of direct drive motors. They are also more expensive and are typically only offered on higher end furnaces and air conditioners. Due to their very low energy use there are energy rebates and Federal Tax Credits available for systems that use variable speed blower motors or ECM motors. 
 
The benefits you will receive by taking care of air flow problems include: quieter operation, improved airflow throughout your home, fewer repairs due to overheating and stress of the equipment, longer equipment life, lower utility bills and, best of all, greater comfort.

 

 

 

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