HC22a/502a has been enhanced to do a better job of replacing 502a while remaining the top replacement for 22a. The head pressure remains much lower with HC22a/502a than with either 502a or 22a.

HC12a/134+ and HC22a/502a have been packaged in less expensive cylinders (30# disposable cylinders) giving the installer a much lighter cylinder to handle and a much better price when buying.

Not only the best refrigerant in the world, now it is the best-priced refrigerant in the world. The new packaging is geared more toward the professional air condition technician. Everyone dealing with refrigerants should have (1) a set of gauges, (2) a recovery machine, and (3) a vacuum pump. These three items are very essential in doing the right kind of repairs to any air condition or refrigeration system. Without gauges who knows what the high side pressure is. Many compressor and ruptured hose jobs are done because too much refrigerant was put in without knowing the high pressure readings. A small, inexpensive job turned into a disaster when a set of gauges would have been much cheaper. How can we capture all of these destructive refrigerants without a recovery machine and tank? We should be studying these ozone depleting, earth warming, highly toxic chemicals we are dumping into the atmosphere. The United States has become the largest dumping ground in the world for bad refrigerants. The use of small cans seems to be the number one culprit.

We should all work together and try to clean up the mess we have made. A recent petition was sent to the USEPA showing over 1 million gallons of hydrocarbon refrigerants being used in the U.S. without 1 claim for injury being filed. This petition was supported by documents from four insurance companies, showing after ten years of use and 3 to 5 million cars being charged with hydrocarbons, not one single claim has been filed against these products. These insurance companies carry product liability on this refrigerant, and would be the first to know if a problem ever came up. The truth is sure different from propaganda and lies we all hear but cannot be documented. ALWAYS SEEK THE TRUTH.

Nearly all of the above replaceable, synthetic refrigerants are either ozone depleting or earth warming blends. None are considered earth friendly. Foreign nations are already fazing these refrigerants out, soon to be followed by the United States. We have already seen the faze out of the worst ozone depleting refrigerants, now we're beginning to see the end of the earth warming refrigerants. In 2002, the Department of Energy passed regulations which require minimum efficiency from 10 SEER to 12 SEER on most residential units which goes into effect after 2005. To reach this goal you simply match a 4-ton air handler to a 3 1/2 ton condensing unit and charge with HC22a/502a, which will bring it to a 15 to 16 SEER unit.

Remember it takes less than half the weight when replacing original refrigerants with HC's. When charged properly a large drop in head pressure should be obtained. You should have colder air and less run time. You should also see a 25% to 30% reduction in energy use, cutting power bills, some drastically. Why the United States continues to teach, study, and use the obsolete refrigerants is a mystery to the rest of the world. We all know that synthetic refrigerants have no future in modern technology of cooling and refrigeration.

Examples:

• R11 Used for many centrifugal chillers in office buildings and as a parts cleaner
• R12 Used for automotive air conditioning, residential and light commercial refrigeration, and for some centrifugal chillers in office buildings
• R113 Used for smaller commercial chillers and as a cleaning solvent
• R114 Used in some household refrigerators and in centrifugal chillers for marine applications
• R502 Is a blend of 48.8% R22 and 51.2% R115 - used for low-temperature refrigeration systems

HCFC Refrigerants (Hydrochlorofluorocarbons): HCFCs contain hydrogen, a small amount of chlorine, fluorine, and carbon. The hydrogen in their formula makes them less stable than CFCs. HCFCs thus have a lower potential for ozone depletion as they breakdown in the atmosphere releasing the chlorine before it reaches the ozone layer. HCFCs also have global warming potential. Due to their environmental impact these products are scheduled to be phased out in the coming years.

Example:

• R22 Used extensively in residential and light commercial air conditioning

HFC Refrigerants (Hydrofluorocarbons): HFCs contain hydrogen, fluorine, and carbon atoms. While they will not deplete the ozone layer they do have global warming potential. For this reason, many nations worldwide are planning their elimination. HFCs generally are not compatible with the natural mineral oils used with the CFCs which they replaced. This has greatly complicated converting R12 systems to the HFC R134a.

Example:

• R134a Replacement for CFC R12

HC Refrigerants (Hydrocarbons): HCs are natural organic compounds. HC refrigerants have no fluorine or chlorine in their molecule, thus they have no ozone depletion potential and a very low global warming potential as compared to other refrigerants.

HC12a/134+® and Hc22a/502a® are considerably different molecularly than traditional refrigerants. A molecule of HC12a/134+® is much larger than a molecule of R134a or R12 but weighs only half as much. This larger HC molecule can be compared to a kernel of popped corn, light and fluffy, while the traditional refrigerant molecule can be compared to a corn kernel, small and dense. This large fluffy molecule absorbs, conducts, and releases heat better than the small dense molecule. The large fluffy HC molecule can be compressed much easier than the small dense molecules of traditional refrigerants.

Based upon these molecular advantages, HC refrigerants are more efficient than traditonal refrigerants and require considerably lower high side pressures than R134a for example. Lower operating pressures translate into longer compressor life and fewer leaks. Additionally, electric powered air condition or refrigeration systems converted from traditional refrigerants to HC products commonly experience compressor related energy reductions of 15-50% with equal or improved cooling.

Because HC12a/134+® and HC22a/502a® molecules are larger and lighter, a full charge of HC is achieved at approximately half the weight required by traditional refrigerants. HC12a/134+® is 0.43 times the weight of CFC R12 and 0.5 times the weight of R134a. HC22a/502a® is 0.5 times the weight of HCFC R22 or R502. For example, if a system requires 32 oz. of R134a, the same system would be fully charged with HC refrigerants at approximately 16 oz.

HC12a/134+® and Hc22a/502a® are zeotropic blends and thus have many temperatures as they evaporate and condense at a given pressure. This is called temperature glide. Refrigerants like R12, R134a, and R22 evaporate and condense at one temperature for a given pressure basically dumping their heat in a small area of the condenser. The glide of HC refrigerants reduces hot spots and releases heat more evenly across the condenser while absorbing heat more uniformly across the evaporator. This characteristic makes better use of system components and provides more efficient operation in the hottest environments.

Hc12a/134+® has a normal boiling point of -33.9° C (-29° F). HC22a/502a® has a normal boiling point of -40° C (-40° F).

HC12a/134+® and HC22a/502a® are flammable at limited air to gas ratios. HC12a/134+® and Hc22a/502a® have a lower flammability limit of 1.8% gas to air and an upper limit of 8.5% gas to air. In other words, concentrations of HC lower than 1.8% gas to air are too lean to burn and concentrations higher than 8.5% gas to air are too rich to burn. While HC12a/134+® and HC22a/502a® are flammable, the risk of ignition has been shown to be extremely low. HC12a/134+® and HC22a/502a® have been engineered to pose the lowest possible flammability hazard and are safer than hydrocarbon products used routinely in other parts of the world. As of this date (May 2002) there have been no documented incidents of property damage or human injury resulting from HC12a/134+® or Hc22a/502a®.

As an added protection against leaks, a strong odor has been added to HC12a/134+® and Hc22a/502a® so any concentrated leak can be quickly indentified.