FAQs for Refrigerants

Please use our app at https://hwll.co/refrigerants-resources-app-web-versions. You can enter your application and the software will give you available options. You can also download the Honeywell refrigerants list at https://hwll.co/refrigerants-resources. Search for “application guide”.

Please contact our sales team for Distributors in your area.

Region Contact Phone Email
Northeast US Jim Funk 973-307-7881 Jim.Funk@Honeywell.com
Central US Dan Davis 973-722-8929 Daniel.Davis3@Honeywell.com
West Coast Corey Smith 626-340-6834 Corey.Smith@Honeywell.com
Southeast US Rob Howard 770-331-2452 rob.howard@evdunbarco.com
Canada Marie Li-Ying 905 608 6325 marie.li-ying@honeywell.com
Argentina, Brazil and Chile Fernando Tanaka + 55 11 9 6641-8396 Fernando.Tanaka@Honeywell.com
Central America, Caribbean and Andean Region Nohora Clavijo + 57 310 3176121 nohorarocio.clavijo@honeywell.com
Mexico Marco Garcia +52 1 55 5452 7222 marco.garcia@honeywell.com

Refrigerant performance can be compared by downloading Genetron Properties Suite at honweywell-refrigerants.com.

You can simulate your system with the right refrigerant and export the results to Excel. Compare performance of multiple refrigerants and much more – all for free:
◾Run simulations of 12 compression cycles: classical, cascade, multiple stage, liquid injected, vapor injected, transcritical, ORC etc.
◾Learn typical operating conditions for various cycles
◾Compare performance of multiple refrigerants for any cycle in a single step
◾Calculate properties of various refrigerants
◾Easily generate P-T tables for various refrigerants For assistance using the software please contact technical service at
1-800-631-8138.

Refrigerant properties can be obtained by downloading Genetron Properties Suite at honeywell-refrigerants.com.

You can simulate your system with the right refrigerant and export the results to Excel. Compare performance of multiple refrigerants and much more – all for free:
◾Run simulations of 12 compression cycles: classical, cascade, multiple stage, liquid injected, vapor injected, transcritical, ORC etc.
◾Learn typical operating conditions for various cycles
◾Compare performance of multiple refrigerants for any cycle in a single step
◾Calculate properties of various refrigerants
◾Easily generate P-T tables for various refrigerants For assistance using the softwatre please contact technical service at
1-800-631-8138.

Please go to https://hwll.co/msds and search for the ASHRAE number (ie R-448A) in the product box. If you get an error try using a different search engine.

Please call 1-877-841-2840 and they will direct your call. You can also go to www.honeywell.com/contact-us and ask your question with an on-line form.

No, mixing one refrigerant with another refrigerant is a violation of the U.S. EPA’s SNAP use conditions. In addition, mixing refrigerants would result in a mixture with unknown performance, and pressure/temperature relationship.

The term “drop-in” is an industry term that is commonly misunderstood and can lead to incorrect application of refrigerants.

The term “drop-in” does not mean that the refrigerant can be “dropped” on top of (mixed) with other refrigerants.
A refrigerant should never be mixed with another refrigerant.
Mixing refrigerants is a violation of the U.S. EPA’s SNAP program and U.S. Federal regulations. In addition, mixing refrigerants will change the refrigerant’s efficiency, capacity, flow rate, operating pressures, and oil return and can lead to operational and maintenance issues.
The replacement of the existing refrigerant must be done after all the existing refrigerant has been properly removed from the equipment.

The term “drop-in” does refer to a refrigerant that may be able to replace the existing refrigerant in a system without the need for an oil change or system alterations while maintaining energy and refrigeration capacity within tolerances. The drop-in refrigerant must be specifically designed to be a close match to the refrigerant being replaced. For example, Honeywell Genetron 422D can replace R-22 in simple HVAC systems but should not be used to replace other refrigerants or used in low temperature systems.
It is important to understand that systems with long connecting lines, accumulators, or receivers may not be a good candidate for a drop-in refrigerant.

Please refer to Honeywell’s technical bulletin #11 for more information.

Visit https://www.fluorineproducts-honeywell.com/refrigerants/resources/ and search for “retrofit guidelines”.

The attached brochure and video describe setting superheat with refrigerants with glide. You may download our PT chart app at the App Store or Google Play Store. This will give the correct values for setting superheat.

There are several simple line sizing web applications on the web. Be sure to use trusted and reputable sources. Many component manufactures also include line sizing calculations in their valve sizing software. Honeywell has a line sizing chart specifically for R-448A. Honeywell’s free Genepro software is available for more advanced line sizing calculations.

The Environmental Protection Agency maintains a list of global warming potentials (GWP) based upon the refrigerants use. It can be found here. Honeywell also has an application guide located here that gives the GWP of all our commercialized refrigerants. The GWP of all refrigerants is also available on Honeywell’s Genetron software.

If you are a contractor you should return cylinder(s) to the distributor where you purchased them and receive your return deposit. Please be aware that the shrink wraps and seals must be intact to receive warranty credit for an empty cylinder (required for warranty only, not regular returns).
If you are the distributor please return to Honeywell by following the instructions on the attached flyer.

If you are a contractor you should return cylinder(s) to the distributor where you purchased them and receive your return deposit. Please be aware that the shrink wraps and seals must be intact to receive warranty credit for an empty cylinder (required for warranty only, not regular returns).
If you are the distributor please return to Honeywell by following the instructions on the attached flyer.

A typical retrofit of R-22 to R-407C or R-422D will not require an expansion valve change. In some cases with R-422D on HVAC systems a change of the orifice may be required. Refer to technical bulletin #1 for orifice sizing.
A retrofit of R-22 to R-448A will typically not required any expansion valve changes, however adjustment will be required.
A retrofit of R-404A to R-448A will typically not require an expansion valve change, however a change of the power element to an R-22 or R-448A element may be required. Significant expansion valve adjustment will be required.
Refer to technical bulletin #5 and technical bulletin #6 for more details

PT charts can be downloaded from www.honeywell-refrigerants.com/resources. Select PT charts and download the charts you require. You may also contact your Honeywell Refrigerants representative or distributor for pocket-sized PT charts for various refrigerants.

A refrigerant with minimal glide can be used successfully on flooded systems. Within a flooded evaporator a refrigerant with a higher glide will likely result in the refrigerant in the vapor phase having a different composition than the refrigerant in the liquid phase. This is because the refrigerant(s) in the blend with the lower boiling point will evaporate at a higher rate than the higher temperature refrigerant(s). Since the refrigerant that then circulates in the system has a changed composition it can affect the system operation. Due to this, refrigerants with significant glide are generally not recommended for use in systems with flooded evaporators.

Refrigerant pressure/temperature data can be generated in the Genetron Properties Suite at www.honeywell-refrigerants.com.
The data can be generated at user selected ranges and increments. This data can then be downloaded for use in spreadsheets.

Many modern refrigerants are a blend of different refrigerants. These refrigerants can have different boiling points at the same pressure. These refrigerant blends are called zeoptropes. With zeotropic refrigerant blends, the temperature in the evaporator will be colder at the start of the coil than at the end and the temperature in the condenser will be warmer at the beginning than at the end. Simply put, the differences in these temperatures is the glide. Please refer to the attached documents for more information on glide.
Pressure Based PT Charts
Understanding Glide and Superheat

In general, CFCs and HCFCs will use mineral oil. HFCs and HFOs will typically use polyolester (POE) oils. The specific oil should be as recommended by the equipment or compressor manufacturer. Be aware that some special applications use a different oil such as PAG or PVE.

Liquid line sizes are usually calculated to equal 2 °F or less in equivalent pressure drop. If the evaporator is 15 feet or more below the receiver, the pressure from the liquid refrigerant will compensate for this pressure drop and flashing will not occur. If the evaporator is not 15 feet or more below the receiver, then refrigerant flashing may occur in the liquid line. The need for subcooling may be mitigated by the use of suction to liquid heat exchangers in the fixtures and through liquid line cooling through conditioned areas. If liquid flashing is causing operational issues, Honeywell recommends subcooling of the liquid to prevent liquid flashing. Subcooling at a minimum rate of 2 °F per 10 feet of elevation will prevent flashing. Additional subcooling or liquid insulation is recommended to offset warming of pipe through unconditioned areas.

When retrofitting from R-22 to R-448A, the relief valve size may need to be increased.
When retrofitting from R-404A, R-507, R-408A, or R-402A to R-448A the relief valve size will be acceptable assuming the valve was sized correctly for the existing equipment.
When retrofitting from R-401A, R-409A, or R-134a to R-450A the relief valve(s) size may need to be increased.
When retrofitting from R-12 to R-450A the relief valve size will be acceptable assuming the valve was sized correctly for the existing equipment.
The relief valve will also need to be reviewed when retrofitting from R-401A or R-409A to R-134a.
When retrofitting from R-22 to R-422D the relief valve size (if equipped) may need to be increased.
Honeywell recommends replacing the relief valves in any case to ensure they are in good working order.
Please refer to manufacturer’s literature for sizing guidelines.

Load More