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Honeywell Solstice® N40 R-448A Refrigerant is a professional commercial refrigeration refrigerant supplied in a 25 lb cylinder for compatible low- and medium-temperature refrigeration systems. R-448A is a lower-GWP HFO/HFC refrigerant blend...

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Honeywell Solstice® N40 R-448A Refrigerant is a professional commercial refrigeration refrigerant supplied in a 25 lb cylinder for compatible low- and medium-temperature refrigeration systems.

R-448A is a lower-GWP HFO/HFC refrigerant blend developed for commercial refrigeration applications and approved retrofits from refrigerants such as R-404A in compatible equipment. Honeywell Solstice N40 is widely associated with supermarket refrigeration, refrigerated display cases, walk-in coolers and freezers, foodservice refrigeration, and other commercial systems designed or properly converted for R-448A.

This Honeywell R-448A 25 lb cylinder is well suited for refrigeration contractors, supermarket service companies, HVAC-R technicians, cold-storage operators, facility maintenance teams, and commercial buyers who require a recognized R-448A brand.

Always confirm equipment compatibility and follow the equipment manufacturer's instructions and an approved retrofit procedure before charging or converting a refrigeration system.

Honeywell Solstice N40 R-448A Product Details

  • Brand: Honeywell

  • Product: Solstice® N40

  • Refrigerant: R-448A

  • Cylinder size: 25 lb

  • Refrigerant type: HFO/HFC zeotropic blend

  • Composition: 26% R-32, 26% R-125, 21% R-134a, 7% R-1234ze(E), 20% R-1234yf

  • Safety classification: A1

  • Ozone depletion potential: 0

  • EPA regulatory GWP reference value: 1,386

  • Typical lubricant: POE

  • Primary applications: Compatible low- and medium-temperature commercial refrigeration

  • Retrofit applications: Certain R-404A systems when approved

  • Purchase requirements: Applicable EPA refrigerant sales restrictions apply

R-448A Refrigerant for Commercial Refrigeration

Honeywell Solstice N40 is designed primarily for low- and medium-temperature commercial refrigeration.

Depending on equipment specifications and manufacturer approval, R-448A may be used in applications such as:

  • Supermarket refrigeration systems

  • Refrigerated display cases

  • Walk-in coolers

  • Walk-in freezers

  • Convenience-store refrigeration

  • Foodservice refrigeration

  • Cold-storage equipment

  • Vending and plug-in refrigeration equipment

  • Other compatible commercial refrigeration systems

Application type alone does not confirm compatibility. Always verify that the system is designed for R-448A or has an approved R-448A retrofit procedure before adding refrigerant.

What Is Honeywell Solstice N40?

Solstice® N40 is Honeywell's branded R-448A refrigerant.

R-448A is a zeotropic blend containing both HFO and HFC components. It was developed to provide a lower-GWP alternative to higher-GWP commercial refrigeration refrigerants such as R-404A.

Because R-448A is a zeotropic blend, it has temperature glide. Refrigeration technicians should account for this characteristic when evaluating system pressures, temperatures, superheat, subcooling, and charging procedures.

Use current R-448A pressure-temperature data and follow manufacturer service instructions when working with Solstice N40.

Can R-448A Replace R-404A?

R-448A is used as a replacement for R-404A in certain approved commercial refrigeration retrofits, but it should not be treated as a universal drop-in replacement.

A proper retrofit may require evaluation or adjustment of:

  • Compressor compatibility

  • POE lubricant condition

  • Refrigerant charge

  • Expansion valves

  • System controls

  • Pressure settings

  • Temperature settings

  • Refrigerant piping

  • Operating conditions

  • Equipment manufacturer requirements

The original refrigerant should be properly recovered before charging the system with R-448A.

Never mix R-448A with R-404A, R-507A, R-449A, or another refrigerant.

Honeywell Solstice N40 vs. R-404A

One of the primary reasons R-448A is used in commercial refrigeration is its lower global warming potential compared with R-404A.

For U.S. regulatory purposes, EPA currently lists:

  • R-448A GWP: 1,386

  • R-404A GWP: 3,922

This represents a substantial reduction in refrigerant GWP.

However, refrigerant GWP is only one factor affecting the environmental impact and performance of a refrigeration system. Refrigerant charge, leakage, equipment efficiency, maintenance, system design, and operating conditions also matter.

R-448A should therefore be described as a lower-GWP alternative to R-404A, not as an environmentally harmless refrigerant.

Honeywell Solstice N40 vs. R-449A

R-448A and R-449A are similar refrigerants used in commercial refrigeration, but they are not the same product.

Both are A1 HFO/HFC blends commonly considered for certain R-404A and R-507A applications. However, their chemical compositions and refrigerant properties differ.

Honeywell Solstice N40 is R-448A.

Technicians should always use the refrigerant specified or approved for the particular system rather than treating R-448A and R-449A as interchangeable.

R-448A Temperature Glide

R-448A is a zeotropic refrigerant blend and therefore exhibits temperature glide during evaporation and condensation.

Technicians should use the appropriate bubble-point and dew-point data when performing service calculations and evaluating system operation.

This is particularly important when checking:

  • Evaporating temperature

  • Condensing temperature

  • Superheat

  • Subcooling

  • Expansion-valve operation

  • System controls

Always use current Honeywell technical data and equipment manufacturer guidance when servicing systems containing Solstice N40.

25 lb Honeywell R-448A Cylinder

The 25 lb Honeywell Solstice N40 R-448A cylinder provides a practical refrigerant quantity for commercial refrigeration contractors and maintenance teams servicing multiple compatible systems.

Before use, technicians should verify:

  • Refrigerant designation

  • Cylinder label

  • Cylinder condition

  • Applicable Safety Data Sheet

  • Service connection

  • Equipment compatibility

  • Required refrigerant charge

  • Applicable retrofit procedure

Store, transport, and handle refrigerant cylinders according to Honeywell documentation and applicable regulations.

Is R-448A Still Used?

Yes. R-448A remains an important refrigerant for existing compatible commercial refrigeration equipment and approved retrofit applications.

The U.S. refrigerant market continues to transition toward refrigerants with lower global warming potential. Regulations for new refrigeration systems depend on the specific equipment category, application, refrigerant GWP, and compliance date.

Existing equipment should continue to be maintained according to manufacturer specifications and applicable regulations.

Do not assume that an existing R-448A system must be converted solely because newer refrigerant technologies are available.

Honeywell R-448A Safety and Professional Handling

Honeywell Solstice N40 carries an A1 safety classification, meaning it is classified as lower toxicity and does not propagate flame under the applicable refrigerant safety standard.

R-448A is still a liquefied gas stored under pressure and requires professional handling.

Technicians should follow:

  • Honeywell Safety Data Sheet guidance

  • Equipment manufacturer instructions

  • Approved retrofit procedures

  • Refrigerant recovery requirements

  • Applicable federal, state, and local regulations

  • Proper cylinder storage and transportation procedures

  • Appropriate personal protective equipment requirements

Use professional refrigeration charging, recovery, and service equipment suitable for R-448A.

Do not intentionally vent refrigerant into the atmosphere.

Who Can Purchase Honeywell R-448A Refrigerant?

Federal refrigerant sales restrictions apply to R-448A intended for stationary commercial refrigeration equipment.

Purchasers generally must be EPA Section 608 certified technicians, qualifying employers or authorized representatives of certified technicians, qualifying resellers, or other buyers permitted under applicable EPA requirements.

Section 609 certification applies to motor-vehicle air-conditioning applications and does not by itself authorize the purchase of refrigerant intended for stationary refrigeration systems.

Buyers should verify applicable federal, state, and local requirements before ordering.

Buy Honeywell Solstice N40 R-448A Refrigerant

Royal Refrigerants supplies refrigeration contractors, HVAC-R professionals, supermarket service companies, cold-storage operators, facility teams, and commercial buyers with refrigerants for a wide range of cooling applications.

If you are looking for Honeywell R-448A refrigerant for sale, this 25 lb Solstice N40 cylinder provides a recognized branded option for compatible commercial refrigeration systems and approved retrofit applications.

Royal Refrigerants combines decades of refrigerant-industry experience with competitive pricing, knowledgeable product support, nationwide order fulfillment where permitted, and bulk purchasing options for commercial customers.

We offer FREE continental US shipping. Most orders are shipped same day or next day by Hazmat Ground. You will receive an email notification with tracking when your order is shipped.
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