Benefits Your K-12 Foodservice
Reliable foodservice starts behind the scenes, with consistent food well performance supported by the right…
How Does R-454C Refrigerant Compare to R-404A and R-290 (Propane)?
Food well refrigerant may seem like a behind-the-scenes detail, but it directly affects efficiency, compliance, maintenance demands and how smoothly meal service runs in K-12 kitchens.
Here’s how R-454C compares with R-404A and R-290 (propane) and what those differences mean for daily operations.
How do the charge limits of R-454C, R-404A and R-290 support food wells?
- R‑454C: Can support up to 2,330 grams charge limit per compressor, allowing a single compressor to serve up to six food wells. This gives operators flexibility when configuring hot, cold and frozen applications. For example, one system can handle two hot wells, two cold wells and two frozen wells.
- R‑404A: Does not meet current low-GWP regulations and is no longer approved for food well compressors.
- R‑290: Limited to 150 grams charge limit per compressor, the current industry maximum for this product category. It typically requires one compressor per food well, which can increase the installation footprint.
What are the safety classifications of R-454C, R-404A and R-290?
Here is how food well refrigerants are classified according to ASHRAE safety classifications:
- R-454C: A2L (non-toxic, mildly flammable)
- R-404A: A1 (non-toxic, non-flammable)
- R-290: A3 (non-toxic, highly flammable)
You can learn more about ASHRAE safety classification in this fact sheet or at ashrae.org.
Which food well refrigerants meet low-GWP standards?
- R-454C has a GWP of about 146, meeting low-GWP standards.
- R-404A has a GWP near 3,922, which does not meet the low-GWP limits of 150 or less.
- R-290 has a very low GWP of around 3, meeting low-GWP requirements.
Which food well refrigerant is easier to maintain in K-12 schools?
- R-454C requires fewer components, making maintenance simpler and faster.
- R-404A is easy to service, but it no longer meets current low-GWP requirements.
- R-290 requires multiple service points and flammable-refrigerant protocols.
Why is R-454C an ideal refrigerant for food wells in school kitchens?
R-454C bridges performance, compliance and operational simplicity.
- Low-GWP regulatory compliance
- Flexible system design for hot, cold and frozen applications
- Lower flammability than propane-based refrigerants
- Simplified maintenance and servicing
Interested in learning more about R-454C refrigerant for food wells?
Read our blog, 5 Ways R-454C Food Well Refrigerant Benefits Your K-12 Foodservice. You can also visit our R-454C educational page.
If you’re looking for guidance on selecting the right foodservice equipment, including food wells and counters, LTI’s experts are here to help. Reach out to our knowledgeable team to get answers to your questions and tailored recommendations.
