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U.S. and Canadian governments have directed that all producers of air conditioning equipment phase out production of the refrigerant R-22 (Freon) or Hydrochlorofluorocarbons (HCFCs). These refrigerants have been standardly used in air conditioners and heat pumps for many decades. The recommended phase-out mandates are anticipated to have the HVAC industry move to a more earth friendly refrigerant with a technical label R410A. has been shown to be safer for the environment. In late 2010 most air conditioning manufacturers began manufacturing Air Conditioning and Heat Pump units, without adding refrigerant at the factory. more commonly called “dry charged units”. can legally be sold and installed which permits your your city area HVAC contractor to charge the unit on-site with R22. R22 is still legal service for a short timeThe purpose of these Dry Charged Units is to provide the greater your city area a more simple and relatively inexpensive

replacement option for central air conditioners and heat pumps. However, these units also circumvent the spirit of the mandates, which was to help the environment by introducing more environment friendly solutions. your city homeowners should be aware that these Dry Charged Units are permitted in the U.S. and Canada. Because of the lack of clarity regarding the definition of an outdoor unit in the rules, the entire outdoor unit is technically looked upon as aThese days, condensers or heat pumps intended for use in a replacement R-22 system are now referred to as “Dry Charge” or “Nitrogen Charged” systems. Here are some Frequently Asked Questions about this recent A/C Dry Do you recommend purchasing a Dry Charge Air Conditioning System? a number of things. The best thing to do is learn what types of HVAC equipment the heating and air conditioning industry can offer and seek solutions to address your personal comfort, efficiency and lifestyle needs.

understand the benefits and difference between a dry charge unit and new Why would I buy a R-410A refrigerant system? Current R-410A systems offer benefits to your cityin wall ac unit repair homeowners that Dry Charge units do not. how to remove an ac unit home Improved energy efficiency for affordable in-home comfortcentral ac unit will not turn on State-of-the-art technology to lower humidity Current production refrigerant solutions ensuring longer life and extended availability of refrigerant Longer warranty periods for significant peace of mind Quieter operation for a more peaceful indoor environment Ozone friendly refrigerant that reduces the carbon imprint that negatively impacts our environment

Matched coil solutions for improved reliability and guaranteed cooling and heating performance Is it legal to install Dry Charge units?There are no Federal laws or legal restriction on the installation of R-22 or Dry Charge Equipment, with the stipulation that it is repairing an existing air What about the warranty? The majority of manufacturers have established a standard 5-year parts warranty on dry charge units. industry standard protection on the components it does not provide protection against R-22 refrigerant prices, which are expected to increase dramatically. How expensive will R-22 get in the next few years? It is likely that as a result of supply and demand, the refrigerant will probably go up in price. As the phase out process of R22 continues, new R-22 refrigerant production will progressively be reduced, with full elimination of itsUntil that date, indications are that there will likely be sufficient supply to meet the current demand.

If you have more questions about refrigerant, we encourage you to contact Service Experts Heating & Air Conditioning for < Previous March 30, 2015Next >< 1 2 34 > 2 posts, read 65,903 times Originally Posted by GAwareagles51 In the middle of record setting heat (if not otherwise) set your thermostat higher than 72 What does this sound like to you. Sounds like you need to raise the thermostat a few degrees. Could be a couple of different issues. It could be airflow has dropped from a clogged coil, bad fan motor, clogged fan blades or a combination of all three. It also could just be you're using the wrong filter. Are you using a pleated type "high efficiency" filter or one of those hog hair filters? You can try taking the filter out and see if that stops the freezing (make sure the coil is completely thawed though before you try this). If that solves your problem then go buy some of the el cheapo air filters which aren't restrictive but do allow more debris to get by them.

It also could be low on refrigerant. It could also be a combination of all of the above. Without more information, which you're most likely not going to have access to, we can't help you any more than that. you'll need to call a technician. Assuming this is a 10 SEER system or less the Approach for the evaporator coil should be 35� below indoor ambient. That means at 72�F the evaporator should be operating at around 37�F. The "approach method" is the expected difference in a properly operating HVAC system between condensing/evaporating saturation points and the indoor/outdoor ambient air temperature. Originally Posted by MrRational That should mean a higher heat load on the evaporator (unless there is an airflow problem) which wouldn't cause freezing issues. 1,940 posts, read 6,665,304 times 4,221 posts, read 7,025,500 times Originally Posted by southgeorgia For the record, the average residential system would hold less than four pounds, so that was pretty close to empty.

My first guess is a clogged air filter, this is the most common cause. If you compare a new air filter with old one, you'll notice that the new one is white and the used one is off white in color. This is when you should replace it. you should never allow it to get so clogged that it's any darker than off white in color. If your filter is OK, my next guess is the coil is clogged with dirt caused by not replacing the filter often enough. 43,216 posts, read 43,024,441 times If your filter and coil are not blocked then Your low on freon. Before you ask here is why. The pressure in the suction line is kept at a level that keeps the evaporator from freezing. If your low on freon the pressure drops in the line bringing the temperature below freezing causing it to ice from the evaporator right back to the compressor. While the line runs colder you actually lost capacity from your system from the loss of refrigerant. Loose anymore and the iceing will stop and the air coming out will start to be warm