AC Retrofits: An Opportunity for Contractors

As the R-22 phaseout continues, use the service call as an opportunity to serve your customers by an AC retrofit—converting their R-22 equipment to ISCEON® MO99™ refrigerant, a more sustainable, non-ozone-depleting replacement.

During a service call, an AC retrofit for a condensing unit, commercial, rooftop, or residential system is an opportunity to grow your bottom line. An AC retrofit is a valuable service to your customers, particularly for:

• Systems with little or no refrigerant charge
• Systems requiring replacement of a component
• Environmentally focused customers with a desire for non-ozone-depleting refrigerants
• Customers who would prefer an AC retrofit rather than an entire system replacement
• Systems with lines buried in walls/floors that cannot be converted to R-410A
• Customers unable to afford a new R-410A system in the current economy

What do these scenarios have in common? They are all opportunities for an AC retrofit from R-22 to ISCEON® MO99™, the non-ozone-depleting, mineral oil compatible R-22 alternative from DuPont.

• No oil change required; ISCEON® MO99™ is compatible with mineral oil, AB, and POE
• No cutting out of compressors to dump oil
• No TXV or line set changes 
• Pressure and temperatures closely match R-22
• After making required repairs, changing seals and filter driers, simply evacuate and charge with ISCEON® MO99™

• ISCEON® MO99™ is a non-ozone-depleting and a more sustainable solution
• Retrofitting to ISCEON® MO99™ now eliminates exposure to possible R-22 supply issues
• Helps avoid potential R-22 price volatility
• Eliminates risks for HCFC leak reporting/fines  
• Extends useful life of equipment
• Avoids additional service call for an AC retrofit

When the system is down and the refrigerant charge is removed is the ideal opportunity to explain the clear benefits of converting your customer away from R-22.

Note: Please consult and follow the ISCEON® MO99™ retrofit guidelines for detailed step-by-step instructions for your AC Retrofit.

ISCEON® MO99™ is a versatile R-22 replacement refrigerant for replacing R-22 in direct expansion (DX) air conditioning and refrigeration systems, that can be easily used in an AC retrofit.

ISCEON® MO99™ has been specifically formulated to combine R-22 pressure-enthalpy characteristics with mineral oil compatibility in a unique refrigerant that can be used to replace R-22 over a wide range of evaporator temperatures. ISCEON® MO99™ is compatible with MO/AB/POE lubricants; in most cases, no change of lubricant type is required during the AC retrofit.

• Commercial air conditioning
• Rooftop units
• Indoor packaged units
• DX chillers
• Split systems
• Residential air conditioning
• Refrigeration (low- and medium-temperature)
• Self-contained systems
• Condensing units
• Rack systems

• Lower retrofit labor costs versus HFC/POE options
• Eliminates costly and disruptive oil changes
• Compatible with AB, MO, and POE lubricants
• No expansion valve or line set changes
• Minimizes time spent on control set point adjustments and subsequent service calls
• Not subject to phaseout under the Montreal Protocol
• 42% lower Global Warming Potential (GWP) than R-404A (ref. AR4 report)
• After the AC retrofit, can be topped off during service without removing the entire charge

Based on field experience, calorimeter testing and thermodynamic property data, ISCEON® MO99™ provides similar cooling capacity and energy efficiency versus R-22 in most systems, while operating at a lower compressor discharge temperature. Actual performance depends on system design and operating conditions.

Please read and follow the ISCEON® MO99™ retrofit guidelines.