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HVAC Informational Sheet

Did you know that in 2001 63% of all air conditioning systems were improperly charged? This means they had either too much or too little refrigerant. Imagine what that number is today.
In that same year it was reported that air conditioning was responsible for 16% of all the energy used in that year. In most US locations, air conditioning is only used 3 to 4 months per year.

An air conditioning system that is improperly charged by just 10% can cost the homeowner an average of 20% more on that portion of the utility bill.   It is common for an air conditioning system to be incorrectly charged by 15%. A properly charged system can save you enough money to fill up your car 2 or 3 times during the summer months.

The majority of residential air conditioning systems use 1 of 2 types of refrigerant, most commonly referred to as R22 and R410A. R410A is a replacement refrigerant for R22, which will be phased out due to its high ODP (Ozone Depletion Potential).

When charging an air conditioning system, some HVAC technicians have used the term “beer can cold” to determine if a system is charged correctly. With the higher pressures of R410a, the demand for a sophisticated analyzer like the SG3000 is even greater.   The SG3000 is an HVAC tool that can calculate if a charge is correct, and in real time.

The most common method used to determine if a system is charged correctly is to obtain the data for these variables; inside the home you need the Wet Bulb, Dry Bulb and relative humidity. Outside the home you need the outside temp, the temp of the liquid refrigerant, and finally the current pressure of the liquid refrigerant. The problem has been that this information is obtained manually and has been known to change rapidly, giving the technicians a false number. With the SG3000 all this data is collected and updated 10 times per second giving the technicians the only true real time reading.

Questions to ask your contractor

Does the method you use, use a radio transmitter to gather the data and update it, in real time, as the conditions in my home change?

How can you prove to me that the system is charged correctly?

What kind of refrigerant does my AC system use?

How often should the charge be checked on my AC system?

Will you use the Stargate International patented SG3000 superheat/Subcool analyzer to verify the charge is correct on my AC system? If not, you can call them at 303-840-8206 for a live demonstration.