Established 1970 Fresno California

Our Goal - Customer Safety and Comfort.......Efficiently


Temperatures Uneven?

When calculating the size unit for a house, each room is calculated individually.

The rooms are then added up to determine the total volume of air for the whole house.

It is a simple matter of measuring the air to each room with a flow hood to determine if the air volume is OK.

If the airflow is out of balance, adjusting or resizing is necessary.

Sometimes the cause of uneven temperatures is oversized equipment.

This results in short run cycles which does not let the blower run long enough for even temperatures.

A fairly new concept which finally has the bugs worked out is the use of a special variable speed motor on the indoor blower.   The motor uses only about 1/8th the electricity at low speed and gives about 50% of the normal air volume of high speed.  When the thermostat calls for heat or cool the fan runs on high, and when the thermostat is satisfied, the fan runs on low.  This results in constant air movement 24 hours a day, which keeps the house very even in temperature.  An added benefit to variable speed motors is the ability to maintain desired CFM.                  If you have 5 supply registers supplying 200 CFM each, the total is 1000 CFM.  With this system you could close one of the registers and the 4 that remain open would now supply 250 CFM each for a total of 1000 CFM!   Also with a normal blower motor, as your air filter becomes dirty the CFM of the system goes down because the air flow is restricted. With a variable system, the motor speeds up automatically to maintain the full CFM.  Eventually if the filter is neglected too long the high velocity air will create a whistle at the air filter prompting you to replace it.  All this time the A/C has not suffered from low air flow as it would with a conventional fan motor.