The introduction of a new refrigerant (R-454B) to our marine air conditioning systems is part of a suite of business improvements aimed to reduce environmental impact.

The new refrigerant reduces Global Warming Potential (GWP) by 78% compared to the widely used R-410A, setting a new standard for responsibility and sustainability in the industry.

Refrigerants play a critical role in climate control systems, but when released into the atmosphere, they contribute to global warming due to their high Global Warming Potential (GWP). GWP is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time compared to carbon dioxide.  impacts

Dometic acknowledges the impacts that refrigerants can have on the environment and remain invested to making sustainability improvements across the business.

Refrigerants are only harmful when they escape into the atmosphere, typically due to leaks or improper disposal at the end of a system's life. When contained within a sealed system, they pose no direct environmental impact.

What is R-454B refrigerant? 

R-454B is a low global warming potential (GWP) refrigerant developed to replace R-410A in air conditioning and heat pump systems. With a GWP of 466, it significantly reduces environmental impact compared to R-410A, which has a GWP of 2088. 

Why are we switching from R-410A to R-454B? 

This change is part of our ongoing commitment to sustainability. R-454B’s lower GWP helps reduce greenhouse gas emissions and ensures compliance with evolving environmental regulations. 

Will R-454B work with my existing HVAC system? 

R-454B is designed for use in new systems built specifically for it. Existing R-410A systems will require modifications or complete replacements to be compatible with R-454B. 

What are the benefits of using R-454B? 

R-454B provides several advantages, including a lower GWP, improved energy efficiency, and compliance with environmental regulations. It also delivers similar cooling performance to R-410A. 

Are there any safety concerns with R-454B? 

R-454B is classified as an A2L refrigerant, meaning it has low toxicity and mild flammability. Proper handling and adherence to safety guidelines are essential to ensure safe operation.

How does the performance of R-454B compare to R-410A? 

R-454B offers similar cooling capacity and energy efficiency to R-410A, making it a reliable alternative in terms of performance. 

Will switching to R-454B affect my power consumption? 

R-454B is designed to be energy-efficient, so you may experience similar or even slightly reduced energy consumption compared to R-410A, depending on your system and usage.

What changes are needed to switch to R-454B? 

To switch to R-454B, you may need to install new equipment or modify your existing systems. Consult with a professional to determine the best solution for your needs. 

Is R-454B more expensive than R-410A?

While R-454B may have a slightly higher upfront cost compared to R-410A, its long-term environmental and regulatory benefits make it a valuable investment. 

Why are we switching to R-454B for marine applications despite the EPA exception? 

Although the EPA allows continued use of R-410A in marine applications, we’re proactively transitioning to R-454B to further reduce our environmental footprint. This decision reflects our dedication to sustainability and our commitment to reducing greenhouse gas emissions.