LENNOX R-454B 2025 Compliant Refrigerant Instructions
- June 1, 2024
- Lennox
Table of Contents
LENNOX R-454B 2025 Compliant Refrigerant
Product Information
Specifications:
- Refrigerant: 2025 Compliant Refrigerant (R-454B)
- Effective Date: Second half of 2024
- Compatibility: Similar performance to R-410A
- Certification Requirement: EPA Section 608 or Section 609
Product Usage Instructions
General Information:
Lennox is transitioning to using 2025 Compliant Refrigerant (R-454B) for
its product lineup. This refrigerant was chosen based on factors such as ease
of installation, service, safety,performance, and environmental impact.
Who Can Purchase the Refrigerant?
Only technicians with specific certification under EPA Section 608 or Section
609 can purchase the new refrigerant. Lennox offers training courses for
certification.
Performance Comparison:
2025 Compliant Refrigerant provides comparable performance to R-410A, ensuring
similar comfort, efficiency, and safety levels.
Refrigerant Amount:
Most Lennox 2025 Compliant Refrigerant systems will use a similar amount of
refrigerant as R-410A systems.
Implementation Timeline:
Lennox will launch products with the new refrigerant in the second half of
2024 to comply with regulations effective January 1,2025.
Technical/Safety Information:
A2L Refrigerant:
A2L refrigerants are part of a subgroup defined by ASHRAE,indicating non-
toxicity and specific flammability characteristics.
A2L vs. Low GWP:
A2L refrigerants are not the same as low GWP. A2L refers to the flammability
classification, while low GWP relates to environmental impact.
Vacuum Pump Compatibility:
New vacuum pumps are typically compatible with low GWP refrigerants, but older
models may need replacement. Ensure your vacuum is rated for use with low GWP
refrigerants.
Introduction to 2025 Compliant Refrigerant Resource Guide
Lennox is updating our product lineup to use 2025 Compliant Refrigerant
(R-454B).
We are committed to making decisions that keep homeowners, dealers, and the
environment in mind.
General
What does low GWP mean?
Global Warming Potential (GWP) was a metric developed by the United States
Environmental Protection Agency (EPA) to measure the amount of heat trapped in
the atmosphere from greenhouse gases. Hydrofluorocarbons (HFCs) are a type of
greenhouse gas that is present in refrigerants. The HVAC industry is
undergoing a transition to low GWP refrigerants, which are those with a global
warming potential of less than 700. Lennox’ 2025 Compliant Refrigerant has 78%
lower global warming potential than the previous version, R-410A.
Why did Lennox choose 2025 Compliant Refrigerant (R-454B) for their
products?
When selecting a new refrigerant, Lennox considered ease of installation,
service, safety, performance, environmental impact, and more. Lennox engineers
worked to maximize equipment performance and efficiency with this refrigerant,
while minimizing changes to installation requirements.
Can anyone purchase the new refrigerant?
No. The EPA requires specific certification under Section 608 or Section 609
in order for technicians to purchase refrigerants. Lennox’ BuildATech™
training course offers EPA Section 608 testing. To find out more about the
Lennox Learning Solutions courses, visit LennoxPros.com under the My Learning
tab.
Do low GWP refrigerants perform better than R-410A?
Lennox’ 2025 Compliant Refrigerant provides comparable performance to R-410A.
New low GWP systems will be designed to provide similar levels of comfort,
efficiency, and safety as current R-410A systems.
Will a 2025 compliant refrigerant system use the same amount of refrigerant
as an R-410A system?
While there may be some exceptions, most Lennox 2025 Compliant Refrigerant
systems will use a similar amount of refrigerant as R-410A systems.
When will this change take place for the Lennox product line-up?
In preparation for the new standards effective January 1, 2025, Lennox will
launch our 2025 Compliant Refrigerant products in the second half of 2024. As
always, whenever new regulations go into effect, Lennox is here to provide you
support, training, and educational resources that make it easy to sell,
install, and service the new equipment.
To help drive awareness of 2025 Compliant Refrigerant and designate information regarding these products, Lennox has created an icon that will be easily recognizable in product information and materials.
Technical/Safety
What is A2L refrigerant?
The American Society of Heating, Refrigerating and Air-Conditioning Engineers
(ASHRAE) created a subgroup of refrigerants called A2L. “A” refers to non-
toxic, “2” refers to the flammability level, and “L” refers to the low burning
velocity. You can see this new subgroup compared to other refrigerant
classifications in the referenced chart.
Is A2L the same as low GWP?
A2L refrigerants are not the same as low GWP. The subgroup A2L is the
refrigerant classification the HVAC industry is using in the 2025 refrigerant
transition. Low GWP refers to the global warming potential of the emissions of
the refrigerant.
How flammable is 2025 compliant refrigerant?
Is this class of refrigerants dangerous?
Refrigerants in the A2L class are considered “mildly flammable” but no more
dangerous than many other household products. An A2L refrigerant is very safe
when handled properly and when best practices and safety guidelines are
applied. As part of the HVAC industry transition, low GWP systems, which
utilize A2L refrigerants, require sensor and safety protocol in the event of a
leak. Our products have additional safety features such as a Refrigerant
Detection System that will reduce its concentration in the event of a large
leak.
Does the vacuum pump need to be rated with low GWP refrigerants?
Most new vacuums are already rated for both R-410A and low GWP refrigerants,
however, older ones may not be. Be sure to check your vacuum’s rating and
replace it if it is not compatible with low GWP refrigerants.
Will press fittings need to be different?
Press fittings are determined by the line set diameter. Lennox’ 2025
Compliant Refrigerant will have the same line sets as R-410A, so press
fittings will be the same.
Will there be a change to the threading on service valves?
Service valves on Lennox’ 2025 Compliant Refrigerant systems will be right-
hand threaded which is the same as R-410A systems.
What happens if the wrong refrigerant gets into the system?
2025 compliant refrigerant is not a drop in refrigerant and should not be
added to an existing R-410A system. For safety purposes, low GWP systems
require a Refrigerant Detection System (RDS), so it is important not to mix
the type of refrigerant in the system and to follow all manufacturer
instructions for installation and safety.
Industry/Homeowner Impact
What should I do with the old refrigerant when installing a new low GWP
system?
To help ensure continuity of service, Lennox has teamed up with Hudson
Technologies for the Lennox Reclaim Program, a simple, hassle-free solution
that pays you for recovered R-22 and R-410A refrigerant. In addition to
recovering and reclaiming previous refrigerants to allow for their reuse, the
Lennox Reclaim Program will help to continue circulation of the current
refrigerant to sustain servicing homeowners in a way that reduces the overall
environmental impact of refrigerants.
If a homeowner needs a new system, should they buy one now or wait until
the new models are available?
For homeowners, the most important thing is to be comfortable. If there is an
emergency with their system, they should take care of it now. If they can
afford to wait, it’s better to wait for the new models.
If I install a system with R-410A refrigerant, how will Lennox support or
service that system?
After the transition, Lennox will continue to offer R-410A repair coils, parts
and R-410A refrigerant for servicing units.
Will new systems cost more to operate?
Lennox’ 2025 Compliant Refrigerant products will be more cost effective over
the life of the unit, as previous refrigerants phase out and become more
costly to maintain.
Supporting Resources – Coming Soon
- Informational Webinars
- Product Transition Training
- New Product Information and Line Logic
- Homeowner Education
Scan or click the QR codes to learn more.
R410A Phaseout: Everything You Need to Know | LennoxPros
Lennox Learning Solutions | LennoxPros
FAQ
What does low GWP mean?
Low GWP refers to the global warming potential of the emissions of the refrigerant.
Why did Lennox choose 2025 Compliant Refrigerant (R-454B) for their products?
Lennox considered factors like ease of installation, service,safety, performance, and environmental impact when selecting the refrigerant.
Is A2L the same as low GWP?
No, A2L refers to the flammability classification while low GWP relates to environmental impact.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>