High Quality Air Conditioning System Installation for the Medina, Atascosa County and Greater San Antonio, TX Area 

Sub Zero Air Conditioning & Heating specializes in the installation and service of new and existing air conditioning systems.  We offer the highest-quality Energy Efficient HVAC Systems available on today.  Our company offers the number one rated system on the market American Standard.  We have several options to fit your cooling and heating needs.  At Sub Zero Air Conditioning & Heating, we engineer and design our HVAC installations in-house using up to date Manual J software to ensure your system is precisely what is needed.  We are NCI trained to properly size the ductwork for your air conditioning system.

Keep in mind that on average an air conditioning system will usually last between 10-20 years depending on use, how well it has been maintained and the quality of the unit that was installed.  

• SEER Ratings:  The SEER rating is an indication of the overall efficiency of the air conditioner and heat pump.  The higher the SEER rating the greater the energy efficiency.  The minimum SEER rating is 13 for air conditioners.  Most modern day air conditioning systems have a SEER rating that ranges from 13 all the way up to 21.  In order to be qualified as ENERGY STAR rated the air conditioner must have a SEER rating of 14.5 or higher.  
• Size of the Unit:  Make sure your unit can effectively cool the area of your home without being to small and also not too large.  A Service technician can perform the proper load calculation to help you ensure that the unit you are purchasing is the right size for your specific home.