ACHR News
search
Ask ACHR NEWS AI
cart
facebook twitter instagram linkedin youtube
  • Sign In
  • Subscribe
  • Sign Out
  • My Account
ACHR News
  • NEWS
    • Breaking News
    • New HVAC Products
    • Featured Products
    • Manufacturer Reports
    • HVAC Data
    • Legislation
    • ACHR NEWS Centennial
  • RESIDENTIAL
    • Air Conditioners
    • Furnaces
    • Residential Heat Pumps
    • Ductless
    • Residential IAQ
    • Testing, Monitoring, Tools
    • Components & Accessories
  • COMMERCIAL
    • Air Handlers
    • Rooftop Units
    • Chillers and Cooling Towers
    • Commercial Heat Pumps
    • Boilers and Hydronics
    • VRF/Ductless
    • Commercial IAQ
  • REFRIGERATION
    • Refrigerants
    • Refrigerant Regulations
    • Leak Management
  • CONTRACTOR PRO
    • Geothermal
    • Homeowner Study
    • VRF and VRV Ductless
    • Unitary Trends
  • EDUCATION
    • Training and Education
    • Business Management
    • Service and Maintenance
    • Continuing Education
    • Market Research >
      • HVAC Brand Awareness Report
      • VRV, VRF, VRVZ Report
      • Unitary Trends Report
      • Water Heat Professionals Report
    • Webinars
    • Sponsor Insights
    • eProducts Info
    • White Papers
  • EVENTS
    • HVAC Contractor Forum
    • Industry Events and Webinars
  • MEDIA
    • Videos
    • AHR Expo 2025 Videos
    • Podcasts >
      • ACHR News Podcast
      • HARDI Podcasts
      • AHR Expo Podcasts
      • ACCA Podcasts
    • Interactive Spotlights
    • Quizzes
    • eBooks
    • HVAC Talkback
  • HVAC GROUP
    • ACHR NEWS >
      • Current Issue
      • Digital Edition
      • Subscribe
    • Distribution Trends
    • SNIPS NEWS >
      • Join SNIPS NEWS
    • Engineered Systems News >
      • Join ES News
    • HVACR Directory
    • Contests
    • Newsletters
    • Contact
    • Advertise
    • My Account
Newsline

New Refrigerants Enter U.S. Market

January 15, 2007

COLLEGE POINT, N.Y. - Four HFC refrigerants that can work with mineral oil and have long been available in Europe are now coming to the U.S. market through ComStar, a distribution company.

It has announced it is distributing RS-24 (R-426A), RS-44 (R-424A), RS-45 (no American Society of Heating, Air-Conditioning, and Refrigerating Engineers (ASHRAE) designation as yet), and RS-52 (R-428A). Refrigerant Solutions Ltd. (RSL) of Cheshire produces the refrigerants in England. They are a blend of various HFC refrigerants as well as a small percentage of pentane, butane, and/or isobutene.

According to ASHRAE officials, the refrigerants have yet to be assigned a safety rating.

All four refrigerants are designated HFC alternatives to CFC and HCFC refrigerants. CFCs have not been allowed in new equipment for a number of years, and HCFCs are currently being phased out for use in new equipment. A great deal of equipment, however, is currently running with phased-out refrigerants or those about to be phased out. ComStar and RSL said its RS refrigerants have OEM and retrofit applications. In the retrofit category, they are promoted as a means to keep older equipment running as contractors face shortages of CFCs and HCFCs.

RS-24 was said to be an alternative to R-12; RS-44 was said to be an alternative to R-22; RS-45 as an R-22 replacement; and RS-52 as a replacement for R-22 and R-502 in low-temperature applications.

For more information, visit www.comstarproducts.com.

Publication date: 01/15/2007

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

 

Recommended Content

JOIN TODAY
To unlock your recommendations.

Already have an account? Sign In

  • HVAC-enrollment

    The Trades Are Back: HVACR Programs See Nearly 30% Enrollment Spike

    A new wave of future technicians is entering the pipeline.  
    News
    By: Matt Jachman
  • 2025 Top 40 Under 40

    2025 Top 40 Under 40 HVACR Professionals List

    The 11th annual Top 40 Under 40 list highlights those...
    HVAC Residential Market
    By: Hannah Belloli-Oster
  • LG Ductless Mini-Split Systems

    The 9 Types of Heat Pumps

    As the U.S. moves toward electrification, heat pumps are...
    Heat Pumps
    By: Joanna R. Turpin
Subscription Center
  • Create an Account
  • Start a Subscription
  • Manage My Account
  • Sign Up for Newsletters
  • Visit Customer Service
  • Update Preferences

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to The News audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of The News or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • An illustration shows a house with a geothermal heating system. Pipes are depicted running underground.
    Sponsored byClimateMaster

    Residential Tax Credits Are Ending, But Demand Continues

  • Piggy Bank
    Sponsored byWatercress Financial

    Energy Prices, Inflation, and HVAC: What Today’s Homeowners Care About

  • Refrigerated Food
    Sponsored bySolstice Advanced Materials

    R-455A Refrigeration: A Cold Storage Solution for the Future

Popular Stories

New-HVAC-Equipment.jpg

Amended Complaint Filed in HVAC Price-Fixing Lawsuit

HARDI lolgo navy

HARDI Distributors' Sales Down Nearly 5% in May

AHRI shipment data logo

Heat Pumps Remain HVAC’s Growth Story in Latest AHRI Shipment Data

LA-Heating_Craning-moving-new-hvac-condensing-unit-onto-roof-(2).jpg

Performance Drift: The Hidden Efficiency Problem Raising HVACR Costs

07-09-26-Service-Nation-Survey_Seven-Trends.jpg

Seven Business Trends Reshaping Home Service Contractors

View The ACHR NEWS
Centennial Anniversary Timeline

The ACHR News Timeline Chart
Submit a Letter
Submit a letter to our editors.

Events

November 6, 2025

Next-Gen Data Center Cooling: HVAC Innovation and Real-World Solutions

On Demand As AI workloads and high-density computing push traditional cooling methods to their limits, the data center industry is accelerating the adoption of next-generation HVAC technologies.

July 28, 2026

How Top Home Services Companies Turn Every Conversation Into Predictable Revenue

In this webinar, we'll outline how top contractors are turning every conversation into predictable revenue by coaching every comfort advisor visit, not just the ones a manager rides along on.

View All Submit An Event

Poll

Summer Staff

Are you fully staffed for the summer season?
View Results Poll Archive

Products

BNI Mechanical/Electrical Square Foot Costbook, 2026 Edition

BNI Mechanical/Electrical Square Foot Costbook, 2026 Edition

See More Products
Designing Systems Using A2L Refrigerant - Free Webinar - 7/22/2026

Related Articles

  • Jan. 10, 2007: Four New Refrigerants Enter U.S. Market

    See More
  • April 24, 2006: Ultra-efficient Motors With Copper Rotors Enter U.S. Market

    See More
  • April 15, 2011: Major Solar Air Heating System Manufacturer to Enter U.S. HVAC Market

    See More

Related Products

See More Products
  • low grade.png

    Low GWP Refrigerant Safety: Flammable & Mildly Flammable Refrigerants Manual

  • quick guide.png

    Quick Guide to Refrig Cycle, Refrigerants, Components

  • front cover only.jpg

    How to Market Your HVAC Business

See More Products

Events

View AllSubmit An Event
  • July 22, 2026

    Designing VRF Systems Using A2L Refrigerant

    On Demand  In this session, we will cover how to design VRF systems for the U.S. market using new A2L refrigerants. These systems provide an advanced zoning solution by using inverter technology to deliver precise heating and cooling control across multiple zones and spaces.
View AllSubmit An Event

Related Directories

  • Energy Jet U.S.

    Unheated air make-up systems, heated make-up air, infrared heaters, air cleaners, dust/fume collection systems, evaporative cooling, industrial supply-exhaust fans, spray/paint booths, solar walls.
×

Sign Up. Stay Informed.

The #1 trusted source for the HVACR industry since 1926

SUBSCRIBE
  • RESOURCES
    • Advertise
    • Contact Us
    • Advisory Board
    • Classifieds
    • Submit a Letter
    • Directories
    • Store
  • ACCOUNT CENTER
    • Create an Account
    • Start a Subscription
    • Manage My Account
    • Sign Up for Newsletters
    • Visit Customer Service
    • Update Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • Instagram
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2026. All Rights Reserved BNP Media, Inc. and BNP Media II, LLC.

Design, CMS, Hosting & Web Development :: ePublishing