Published Content




ASHRAE Technical Committee 3.3 - Refrigerant Contaminant Control


Welcome to the homepage of the ASHRAE Technical Committee 3.3. This technical committee is concerned with sources, generation, and control of water and other contaminants in refrigerating systems.


Do you want to get involved in your TC's issues at the Society level? If so, read through the pages of this site, attend the annual meeting, or contact our Committee Chair or a subcommittee member. 

MEETINGS at Annual Meeting, Seattle, June 2014



Main committee meeting:

 TC 3.3 Refrigerant Contaminant Control - Tuesday, July 1, 3:30-6:00 pm

Agenda for Seattle:  Come back later

Our subcommittee meetings are scheduled as follows:
TC 3.3 Research - Sunday, 4:00-6:00 pm (with TC 3.2 and TC 3.4)


The subcommittee meetings are where the action is, so don't miss them.


Programs at Seattle meeting of special interest to TC3.3: 

Sunday, June 29, 8:00 AM-9:00 AM
Effects of Contaminants on Refrigeration System Performance
Track: Refrigeration
Sponsor: 03.03 Refrigerant Contaminant Control
Chair: Warren Clough, Member, Carrier Corp., Syracuse, NY
Contaminants in a HVAC&R system can be detrimental and, at some point, impact the performance and reliability or eventually lead to a catastrophic failure. There are standards in place to minimize the level of contaminants that enter into a system. For example, Air Conditioning, Heating and Refrigeration Institute (AHRI) 700, Specification for Fluorocarbon Refrigerants, is an industry standard that controls the level of refrigerant impurities. Should a system become contaminated there are products designed to remove and control the levels allowed. Some contaminants introduced cannot be system controlled and have resulted in fatalities. Therefore, steps have to be taken to avoid such contaminants from being introduced.

1. Various System Contaminants, their Sources, and Tools to Eliminate Them
Christopher Reeves, Associate Member, Parker Hannifin Corporation, Washington, MO
2. Updates to AHRI 700 Specification for Refrigerants and the Level of Acceptable Impurities
Robert W. Yost, Member, National Refrigerants, Rosenhayen, NJ

Tuesday, July 01, 11:00 AM-12:30 PM
Advances in Low Global Warming Potential (GWP) Refrigerants

Track: Refrigeration
Sponsor: 03.01 Refrigerants and Secondary Coolants, MTG - Lower GWP Alternative Refrigerants
Chair: Barbara Minor, Member, DuPont, Wilmington, DE

Significant progress is being made in the development and testing of low GWP alternatives to hydrofluorocarbon (HFC) and hydrochlorofluorocarbon (HCFCs) refrigerants. This seminar focuses on several applications of refrigerant development including air conditioning, high temperature heat pumps and refrigeration. Of particular concern is development of new refrigerants for air conditioning that perform well at high ambient temperatures such as in the Middle East. Some regions are just beginning their transition away from HCFC-22 and are looking for low GWP HCFC-22 alternatives with similar performance. Information is also presented on refrigerant/lubricant property development including miscibility, solubility and viscosity properties.

1. Considerations for the Development of Sustainable Refrigerants for Air Conditioning
Thomas J. Leck, Ph.D., Member, DuPont de Nemours and Company, Wilmington, DE
2. Refrigerant/Lubricant Properties of New Low GWP Options
Gregory Smith, Honeywell, Buffalo, NY
3. Zero-Ozone Depleting Potential (ODP), Low-GWP Working Fluids for High Temperature Heat Pumps
Konstantinos Kontomaris, Ph.D., Member, DuPont, Wilmington, DE
4. Sustainable Refrigerant Solutions for HVAC&R
Laurent Abbas, Ph.D., Associate Member, Arkema Inc., King of Prussia, PA


This page revised 5/17/2014

Committee Chair:


Rob Yost
National Refrigerants

Rob Yost


Upcoming Meetings:

2014 Annual Meeting
June 28-July 2, 2014

2015 Winter Meeting
January 25-28, 2015








This web site describes the activities of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) Technical Committee 3.3, Refrigerant Contaminant Control. It does not present official positions of the Society nor reflect Society policy. ASHRAE is not responsible for this site's content. To learn more about ASHRAE activities on an international level, contact the ASHRAE home page at http://www.ashrae.org. Comments about the site? Contact us at webmasterTC3.3 2004, ASHRAE TC3.3