Sandouk HVAC  Heating & Air Conditioning Services 
Dallas & Fort Worth Areas         469-401-6615
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Locally owned in Irving giving quality & integrity.
Common Terminology:

Split system: the condenser and compressor are outdoors, the rest is inside

Package units: most of the components for heating and/or cooling are housed in a single cabinet and it is all installed outside.

Compressor: This is the heart of an air conditioning or heat pump system. It is part of the outdoor unit and pumps refrigerant to meet the cooling requirements of the system.

Condenser coil (or outdoor coil): In an air conditioner, the coil dissipates heat from the refrigerant, changing the refrigerant from vapor to liquid. In a heat pump system, the coil absorbs heat from the outdoors.

Expansion valve: regulates refrigerant flow into the evaporator

Condenser Fan: The fan that circulates air over the air-cooled condenser.

Air Handler: An air moving and/or mixing unit. Residential air handlers include a blower, a coil, an expansion device, a heater rack and a filter. Heaters for air handlers are sold as accessories. 

Drain Pan: Also referred to as a condensate pan. This is a pan used to catch and collect condensation (in residential systems vapor is liquefied on the indoor coil, collected in the drain pan and removed through a drain line).

Freon: Freon is the cooling agent used in most air conditioning systems. Every air conditioning system needs a refrigerant (also called a coolant) that actually creates the cool air — that’s the role of Freon. Currently most new units use R-410A instead of the older R22.

Capacitor: simple devices used in most HVAC equipment to assist compressors and motors with starting and running effectively.

How often should I change my air filters?
There are some factors we can take a look at like your general air quality, do you have pets? Smoker? Etc.  Most air filters are recommended to be changed every 15-30 days depending on those factors. Filters are very inexpensive. The simple answer is when they are dirty.

What does “SEER Rating” mean?
The Seasonal Energy Efficiency Ratio (SEER) is a measure of the cooling efficiency of your air conditioner or heat pump. The higher the SEER number, the more efficient the system is at converting electricity into cooling power. The SEER for your new system should be at least 13 or higher.

What causes ice to form on my outside unit or pipes?
There are several possible causes for this including: dirty filters, dirty evaporator coil, indoor blower not working, not enough refrigerant, perfect or fine leaks, outdoor temperature is too low, malfunction expansion valve, low pressure switch fail, and lastly…restriction within the copper pipe .