Question about Heating & Cooling
We have had the electric air handler removed and replaced, enlarged return air and added a new 24x20 filter return air grill, adjusted all vents and checked in attic for a possible kink in the ductwork. Master bedroom is same size as the guest bedroom however it is 5 degrees warmer. The rest of the house is quite comfortable. We have spent almost $1000.00 with ac so called specialists and are so frustrated.
The issue may not be confined to airflow alone. An air conditioner makes us more comfortable through two basic rules of physics.
It removes sensible heat (the temperature you feel) and removes moisture from the air. Dry air enhances the bodies own cooling system allowing perspiration to evaporate more quickly which speeds the removal of heat from the body, this is why 85 and dry feels more comfortable than 72 moist degrees.
to ensure the ducts are balanced properly one must use an anemometer which is a tool used to calculate airflow by the pro's. Being that most homeowners do not have access to one there are some good observations to make using a pocket thermometer and your own senses:
If 1, 2, 3 or 4 are false: Ensure the following:
If #5 is false (issue goes away if the door is left open) the door may need to be cut off a bit more at the bottom or a grill installed to allow the air coming into the room a place to go.
If none of the above reveal the culprit concider the room itelf, it may have a higher heat load than the others.
A higher heat load may be due to dislodged, compacted and or wet insulation in the walls or attic, feel the walls and ceilings with your hands, how does it compare with cooler rooms?
If the walls and ceiling feel about the same and the tests above did not expose an issue its time to call the contractor back in, make sure the static pressure is checked in each duct a foot or so downstream of the the plenum and again just upstream of the vent. A duct with air pressure higher or lower when compared with the others could mean a variety of issues with the duct or where it connects to the plenum.
Posted on May 26, 2009
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Posted on Jan 02, 2017
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Jul 27, 2017 | Goodman Heating & Cooling
Since the failure of an air conditioner to turn on, loss of air conditioner cooling capacity, reduced air conditioning output temperatures, loss of cool air supply, or even loss of air flow entirely can be due to a variety of problems with one or more components of an air conditioner or air conditioning system, after reviewing the lost air conditioner cooling diagnosis procedures described in this article, be sure to also review the diagnostic procedures at each of the individual air conditioning diagnosis and repair major topics listed just below. To return to our air conditioning and refrigeration home page go to AIR CONDITIONING & HEAT PUMP SYSTEMS.
Electrical problems on HVAC systems: Keep in mind that despite the depth of technical detail you will find here about all components of air conditioners and heat pumps, most service calls for non-working air conditioners or heat pumps turn up an electrical problem. So if your A/C system is just not working at all be sure to check all of our electrical and control setting suggestions first.
Mechanical problems on HVAC systems: tend to fall into these groups: refrigerant leaks, dirty condenser coil or unit, dirty evaporator or cooling coil, or burned out (or hard-starting) compressor motors. We have also seen a number of problems with fans and fan motors in both the compressor/condenser unit and in the air handler/blower fan unit. Some of those fan problems are mechanical - like a loose fan belt or blade. MORE DETAILS
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