Secondary Refrigerants Market Report: $873.7M, 6.6% CAGR

The global market for secondary refrigerants reached $873.7 million in 2025. The Secondary Refrigerants Market Report projects revenue to expand at a 6.6% CAGR from 2026 to 2033, reaching approximately $1.46 billion by the end of the forecast period.

Growth is tied to regulatory restrictions on high-GWP refrigerants, safety-driven reductions in primary refrigerant charge, and expanding cold-chain investment. Secondary systems allow primary machines to stay in a dedicated machinery room while a secondary fluid moves thermal energy to process points. For supermarkets, industrial freezers and heat pumps, this design reduces refrigerant leakage and permits the safe use of mildly flammable or toxic primary refrigerants.

In the Global Refrigerants Market, secondary-loop technology is a structural architecture that complements the transition away from direct expansion systems. The acceleration of low-charge ammonia units, natural refrigerant proliferation and HFC quota cuts broadens new-build specification. Industrial operators use secondary loops to reduce charge by 60% to 90% in retail food refrigeration, converting a regulatory constraint into an operating safety advantage.

Glycols form the largest product segment, with industrial refrigeration and commercial refrigeration generating more than half of end-user demand. Europe is the largest revenue contributor, followed by Asia-Pacific, where cold-chain construction is most intensive. Vendor strategy is shifting toward inhibited, high-stability fluid formulations and full-lifecycle services rather than commodity fluid supply alone.

Glycols are the dominant product segment, accounting for an estimated 44.7% of 2025 revenue. The Glycols Market includes monoethylene, diethylene and propylene glycol based fluids, usually mixed with water, corrosion inhibitors and biocides. Glycol systems can operate to about -35°C and are compatible with stainless steel, plate heat exchangers and ordinary HVACR pump packages.

The industrial share of demand is large because process cooling and blast freezing tolerate higher viscosity and require a low-gaseous-emission safety profile. A typical glycol-based secondary loop uses a 30% to 40% concentration to balance freezing protection with pump power. The segment share is expected to remain near 45% through 2033, although CO2 pump loops will erode a small portion of ultra-low-temperature duty.

The Salt Brines Market remains a lower-cost alternative in stable brine applications where load density is high and corrosion management is active. Sodium chloride brines are limited by temperature; calcium chloride extends range but raises maintenance load. Potassium formate is emerging as a premium option in the Other Products segment, reducing pumping energy and extending equipment life.

The Propylene Glycol Market is an upstream cost driver for secondary refrigerants. Propylene oxide and energy prices determine the formulations indexed to global glycol supply. Buyers are moving toward inhibited blends with a service life of more than ten years, lowering the number of fluid change-outs and the total chemical cost per operating year.

Feedstock volatility is a restraint for converters that serve the HVACR channel. Glycol commodity pricing creates a 15% to 25% swing in negotiated contract values when propylene glycol plants undergo unplanned maintenance. Therefore, North American and European suppliers emphasize technical service and fluid analysis to offset pure price competition.

The Industrial Refrigeration Market consumes about 34.5% of secondary fluid volume. Food processing and cold storage operators use glycol systems to isolate process loads from ammonia charge in freezer plants. The Commercial Refrigeration Market, concentrated in supermarkets and convenience stores, favors inhibited propylene glycol fluids because of food-safety and leak-risk requirements.

The Carbon Dioxide Market has shifted from a primary refrigerant to a dual-duty fluid in secondary loops. Pumped CO2 systems use much smaller pipe diameters and lower pumping energy than brine above -40°C, making them attractive for large warehouses. The Heat Pumps Market follows the same indirect-loop logic in district heating, with water-glycol mixtures operating as a hydraulic separator between the heat pump central plant and distributed building loads.

The principal driver is regulatory. Kigali Amendment HFC phase-down targets, EU Regulation 2024/573 and US EPA AIM Act rules force equipment owners to limit emissions. Secondary loops cut refrigerant charge by up to 90% in conventional supermarket systems, making them a direct compliance route.

Another driver is energy modernization. A central primary plant operates at high load factor, and the secondary circuit allows the most efficient chillers or ammonia compressors to serve multiple zones. The same architecture helps data center cooling and district energy projects optimize thermal storage, and it widens the addressable base for low-temperature heat recovery.

The Heat Pumps Market adds a structural demand layer. In Northern Europe and North America, large heat pumps connected to secondary loops supply hydronic heating and cooling without distributing primary R290 or R744 along the building perimeter. Policy support for electrified heating amplifies the replacement of gas-fired boilers with heat-pump-plus-secondary-fluid systems.

Hardware retrofit costs form one restraint. Replacing direct expansion with pumps, buffer tanks, plate exchangers and expanded insulation can raise first-installed cost by 15% to 30%. Pressure drop and viscosity in glycol systems decrease heat transfer efficiency at low temperatures, so pump selection and fluid concentration control must be engineered accurately.

Contamination is another operational risk. Hydronic loops coupled to open cooling towers or poorly dried pipework can introduce oxygen and bacterial growth. Corrosion by-products shorten fluid life and lower thermal performance. These ownership costs are visible only after several seasons, which explains why some price-sensitive buyers remain with direct expansion systems despite their higher leakage exposure.

• Dow Inc.: Supplies inhibited propylene and ethylene glycol heat transfer fluids for closed-loop refrigeration and industrial brines. Its specialty fluids portfolio supports cold-chain OEM qualification and technical service.
• Tazzetti S.P.A.: Provides technical fluids, including glycol blends and salt brines, from European production and logistics hubs, serving refrigeration contractors and industrial maintenance companies.
• Evonik Industries: Develops specialty additives that stabilize secondary refrigerant fluids and protect metal surfaces from corrosion, supporting longer service intervals in closed systems.
• Eastman Chemical Company: Manufactures heat transfer fluids and specialty fluids used in low-temperature industrial processing; its product line also serves HVACR test and commissioning applications.
• Clariant: Offers fluid maintenance chemistry, including corrosion inhibitors and purification technologies that extend the life of glycol and brine coolants in commercial installations.
• The Lubrizol Corporation: Supplies corrosion inhibitors, lubricant additives and engineered polymers that improve heat-transfer fluid pump performance and material compatibility.
• The Linde Group: Provides high-purity carbon dioxide for secondary coolant loops, carbon capture integration and industrial gas infrastructure, enabling pumped CO2 systems at site scale.
• Temper Technology Ab: Delivers low-charge refrigeration design and natural refrigerant system engineering, with a focus on ammonia CO2 cascade and secondary pump loop applications.
• BASF SE: Produces glycols and heat transfer fluid concentrates, with established distribution to industrial refrigeration and automotive thermal management customers.
• A-Gas International: Supplies reclaimed and virgin refrigerants, including CO2 and hydrocarbons, and operates refrigerant lifecycle management programs that support F-gas phase-down compliance.

• Dec 2023: More than 60 countries signed the Global Cooling Pledge at COP28, committing to reduce cooling-related emissions. The pledge increases pressure on cold storage owners to adopt low-charge secondary loops in retrofit projects.
• Feb 2024: EU Regulation (EU) 2024/573 entered into force, tightening quotas for hydrofluorocarbons and setting use bans in selected refrigeration categories. The rule expands the economic case for indirect systems because secondary loops require far smaller amounts of primary refrigerant.
• Nov 2024: International discussions on Kigali Amendment implementation moved toward stricter national HFC consumption data review. This signals more predictable compliance deadlines for refrigerant importers and equipment manufacturers, favoring suppliers with low-GWP fluid portfolios.

Europe is the most mature market, representing 34% of 2025 global revenue, about $297 million. The EU F-Gas Regulation, national bans on high-GWP refrigerants and heat-pump deployment roadmaps drive continuous replacement of direct expansion systems. Secondary loop glycols and brine fluids are standard in German, French and Nordic supermarket refurbishments.

North America accounts for $192.6 million, or 22% of the total. US EPA SNAP rules and the AIM Act allocation schedule guide new construction toward low-charge technologies. The United States grows at a steady rate, while Mexico supplies a significant portion of new food processing capacity and provides a lower-cost manufacturing base.

Asia-Pacific is the fastest-growing region, with 28% market value of $244.6 million in 2025. China, Japan and South Korea anchor industrial refrigeration and electronics cooling demand; cold-chain logistics in India and Southeast Asia accelerate new secondary-fluid volumes. Asia-Pacific growth is supported by urbanization, food-safety regulations and mounting cold-store capacity.

South America and Middle East & Africa contribute the remaining 16% of global revenue, roughly $139.8 million combined. Brazil leads South America for poultry and meat exports; the GCC region generates district cooling projects where energy efficiency is institutionalized. LAMEA remains a lower-share area because of fragmented regulation and price sensitivity, but export-oriented food industries are beginning to specify brine systems.

The fastest growth corridor is concentrated in Southeast Asia and India, while Europe remains the largest at high single-digit penetration rates. Global competitive intensity rises where raw material access, refrigerant regulation and cold-chain financing converge.

R&D spending is concentrated on fluid chemistry stability and circulation efficiency. The Natural Refrigerants Market expansion is paired with secondary-loop equipment in retail and industrial settings, because CO2 and ammonia can be contained in a small primary circuit while a benign secondary fluid serves loads at different temperatures.

Three technologies are moving from demonstration to standard practice:

• Pumped liquid CO2 systems for frozen food warehouses. These systems operate with small-diameter piping, cut refrigerant charge by 70% or more and reduce pumping energy relative to brine below -35°C. Adoption in Europe and Canada is now at the multi-store chain level.
• Potassium formate brines that replace calcium chloride and glycol in large distributed cooling networks. The fluid has lower viscosity and better thermal conductivity, improving heat exchanger performance by approximately 10% to 20%. Patents and application data are increasing in heat pump and district energy submarkets.
• Phase-change slurries and nano-enhanced fluids. Microencapsulated phase-change materials suspended in a carrier fluid increase thermal storage density without sacrificing pumpability. Adoption is still early, but laboratory tests show that compact heat exchangers can lower charge volume and cut mass flow rates.

Patent activity is strongest in Europe and China, with filings for corrosion inhibitors, new brine formulations and CO2 pump-loop control software. R&D investment is concentrated among specialty chemical suppliers and natural refrigeration engineering firms, rather than commodity glycol producers.

Regulatory policy is the most important external determinant for secondary refrigerants. The EU F-Gas Regulation is the strictest framework, phasing down HFCs in several stages and banning specific refrigeration applications when lower-GWP alternatives are available. Compliance has made secondary loops a default choice for new commercial refrigeration in much of Europe.

In the United States, the AIM Act directs an 85% reduction in HFC production and consumption by 2036. SNAP listings allow substitutes based on life-cycle climate performance, and safety standards such as ASHRAE 15 constrain refrigerant charge based on room size and occupancy. These limits lift the cost of direct expansion systems, making indirect systems competitive.

The Kigali Amendment to the Montreal Protocol unifies national compliance around an ambitious HFC phase-down. Every developed country is on an accelerated schedule, while Article 5 countries follow with a slightly delayed baseline. For secondary refrigerant suppliers, the key effect is the expansion of low-charge design consultation. REACH in Europe and the EPA Toxic Substances Control Act in the United States also regulate raw materials used in corrosion inhibitors and fluid stabilizers, creating a licensing barrier for simpler imports.

Governments in Asia-Pacific increasingly tie cold-chain subsidies to environmental performance. India and China both use refrigerant transition lists that cap GWP in new equipment. The result is a compliance-driven product specification process: contractors and owners require documentation that fluid formulations do not contain restricted substances and that the proposed loop architecture meets local charge limits.

• 1. Product
  • 1.1. Glycols
  • 1.2. Salt Brines
  • 1.3. Carbon Dioxide
  • 1.4. Other Products
• 2. End-use
  • 2.1. Commercial Refrigeration
  • 2.2. Industrial Refrigeration
  • 2.3. Heat Pumps
  • 2.4. Air Conditioning
  • 2.5. Other End Use

• 1. North America
  • 1.1. United States
  • 1.2. Canada
  • 1.3. Mexico
• 2. South America
  • 2.1. Brazil
  • 2.2. Argentina
  • 2.3. Rest of South America
• 3. Europe
  • 3.1. United Kingdom
  • 3.2. Germany
  • 3.3. France
  • 3.4. Italy
  • 3.5. Spain
  • 3.6. Russia
  • 3.7. Benelux
  • 3.8. Nordics
  • 3.9. Rest of Europe
• 4. Middle East & Africa
  • 4.1. Turkey
  • 4.2. Israel
  • 4.3. GCC
  • 4.4. North Africa
  • 4.5. South Africa
  • 4.6. Rest of Middle East & Africa
• 5. Asia Pacific
  • 5.1. China
  • 5.2. India
  • 5.3. Japan
  • 5.4. South Korea
  • 5.5. ASEAN
  • 5.6. Oceania
  • 5.7. Rest of Asia Pacific