Top 10 Companies in the R718 (Water) as Refrigerant Market (2026): Market Leaders Driving Sustainable Cooling

MARKET DRIVERS

Zero Global Warming Potential Drives Adoption

R718 (water) offers a GWP of zero, which directly aligns with escalating climate‑change mitigation policies worldwide. Because manufacturers and end‑users are under pressure to reduce carbon footprints, many are reevaluating traditional hydrofluorocarbons in favor of a truly climate‑neutral alternative.

Regulatory Momentum and Sustainability Goals

Legislation in Europe, North America, and parts of Asia now mandates phasedown of high‑GWP refrigerants. While some sectors still rely on legacy fluids, the regulatory environment is creating a clear pathway for water‑based systems, especially in commercial HVAC and industrial chillers where energy efficiency can be enhanced.

➤ Water’s high latent heat of vaporization enables compact, high‑efficiency heat exchangers, reducing system size and operating costs.

Consequently, equipment manufacturers are investing in component redesigns and certification programs, fostering a market environment where innovation in water‑based cycles is rapidly accelerating.

MARKET CHALLENGES

Technical Barriers and System Compatibility

Despite its environmental merits, water’s high vapor pressure and low boiling point present design challenges for conventional refrigeration loops. Because many existing systems are optimized for oil‑lubricated compressors, retrofitting requires substantial re‑engineering, which can deter early adopters.

Other Challenges

Corrosion and Material Compatibility
Water’s inherent corrosiveness demands the use of stainless‑steel, copper alloys, or specialized coatings. This requirement increases material costs and complicates supply chains, especially in regions where such alloys are not standard.

Additionally, the need for precise humidity control and leak detection adds operational complexity, making maintenance expertise a critical success factor for successful deployment.

MARKET RESTRAINTS

High Capital Expenditure and Retrofit Complexity

Initial investment for water‑based refrigerant systems often exceeds that of traditional HFC solutions due to specialized components and rigorous testing requirements. Because many facilities operate on thin margins, this cost barrier restrains widespread uptake, particularly among small‑to‑medium enterprises.

Limited Cooling Capacity at Elevated Temperatures

Water’s thermodynamic profile limits its effectiveness in high‑temperature applications, such as certain industrial drying processes. This performance gap forces companies to maintain dual‑refrigerant strategies, thereby diluting the market potential for a single‑fluid solution.

MARKET OPPORTUNITIES

Emerging Applications in Low‑Temperature Cooling

Data‑center cooling, vaccine storage, and precision manufacturing are increasingly seeking ultra‑low temperature solutions where water’s high latent heat offers distinct advantages. Because these segments prioritize reliability and low environmental impact, they represent a fertile ground for water‑based refrigerant technologies.

Integration with Renewable Energy Systems

When paired with solar‑thermal or waste‑heat recovery systems, water refrigerants can achieve near‑zero operating emissions. This synergy is unlocking new business models that combine energy‑as‑a‑service with eco‑friendly cooling, positioning R718 as a strategic enabler in the transition to sustainable infrastructure.

TOP 10 COMPANIES IN THE R718 (WATER) AS REFRIGERANT MARKET (2026)

1. Daikin Industries Ltd.

Headquarters: Osaka, Japan
Key Offering: Large‑capacity water‑source heat pumps, precision chillers for data‑centres, integrated control systems

Daikin’s portfolio reflects decades of chill‑water expertise, translating into systems that deliver high reliability and low operating costs. The company’s end‑to‑end supply chain, from compressor design to field service, provides a competitive moat that encourages long‑term customer loyalty.

Sustainability Initiatives:

• Investing in micro‑channel heat‑exchanger research to boost thermal efficiency
• Partnering with OEMs to certify retrofit programmes for existing HVAC assets
• Targeting 30% reduction in embodied CO₂ in new products by 2030

2. Carrier Global Corporation

Headquarters: Atlanta, USA
Key Offering: Comprehensive retrofit solutions for commercial HVAC, advanced demand‑side management software

Carrier’s global service network supports rapid deployment of water‑based systems across diverse markets. Its focus on digital integration enhances predictive maintenance, reducing downtime and extending equipment life.

Sustainability Initiatives:

• Launching a circular‑materials programme for compressor components
• Deploying AI‑driven energy‑management tools in pilot projects
• Committing to net‑zero emissions for the manufacturing footprint by 2035

3. Mitsubishi Electric Corporation

Headquarters: Tokyo, Japan
Key Offering: Compact, inverter‑driven water‑cooling modules for commercial buildings

Mitsubishi Electric’s modular approach allows rapid scaling in retrofit scenarios. The company’s emphasis on high‑quality water‑management systems reduces maintenance burden for operators.

Sustainability Initiatives:

• Integrating renewable‑energy controls into HVAC systems
• Reducing water consumption in production lines by 25% through closed‑loop recycling
• Expanding the use of biodegradable additives in water‑based refrigerants

4. Trane Technologies plc

Headquarters: Dublin, Ireland
Key Offering: High‑efficiency micro‑channel heat exchangers, advanced control algorithms

Trane’s focus on data‑driven optimisation drives performance gains in water‑based cycles. The company’s global footprint enables consistent quality across markets.

Sustainability Initiatives:

• Developing low‑impact refrigerant blends for niche applications
• Deploying predictive maintenance platforms in pilot sites
• Partnering with universities to accelerate heat‑exchanger research

5. GEA Group AG

Headquarters: Cologne, Germany
Key Offering: Modular water‑loop chillers for food‑processing and pharmaceutical sectors

GEA’s process‑engineering heritage underpins robust, hygienic designs that satisfy stringent regulatory requirements. The company’s modular approach reduces installation time and capital outlay.

Sustainability Initiatives:

• Reducing energy consumption in chiller manufacturing by 15%
• Implementing closed‑loop water systems in production facilities
• Collaborating with local engineering firms to accelerate adoption in emerging markets

6. Emerson Climate Technologies

Headquarters: St. Louis, USA
Key Offering: Inverter‑driven water‑cooling modules for boutique commercial buildings

Emerson’s focus on demand‑side management aligns with the growing need for flexible, low‑carbon cooling solutions. The company’s engineering teams develop modules that integrate seamlessly with existing HVAC infrastructure.

Sustainability Initiatives:

• Targeting 20% reduction in water usage in manufacturing by 2030
• Deploying smart‑metering for real‑time energy optimisation
• Partnering with municipalities to pilot water‑based cooling in public buildings

7. Lennox International Inc.

Headquarters: San Diego, USA
Key Offering: Hybrid rooftop units pairing R718 with advanced demand‑side software

Lennox’s hybrid units enable retrofits that preserve existing infrastructure while delivering zero‑GWP performance. The company’s focus on residential and small‑commercial markets fills a niche for low‑cost, sustainable solutions.

Sustainability Initiatives:

• Reducing embodied CO₂ in new product lines by 25% by 2032
• Investing in renewable‑energy powered manufacturing facilities
• Collaborating with local builders to promote water‑based cooling in new developments

8. Johnson Controls International plc

Headquarters: Cork, Ireland
Key Offering: Integrated building‑management systems that support water‑based cooling cycles

Johnson Controls’ expertise in building automation enhances the performance of water‑based systems. The company’s global service network ensures consistent support across markets.

Sustainability Initiatives:

• Deploying AI‑driven analytics for energy optimisation in commercial buildings
• Targeting 40% reduction in CO₂ emissions from its global supply chain by 2035
• Investing in research to improve water‑quality management in large‑scale chillers

9. Honeywell International Inc.

Headquarters: Charlotte, USA
Key Offering: Advanced refrigeration controls and safety systems for water‑based cycles

Honeywell’s focus on safety and reliability makes it a key partner for operators transitioning to R718. The company’s control technologies reduce operational risk and improve system longevity.

Sustainability Initiatives:

• Implementing zero‑water‑loss manufacturing processes
• Integrating renewable‑energy controls into HVAC products
• Launching a global sustainability partnership program for water‑based solutions

10. Bosch Thermotechnology

Headquarters: Stuttgart, Germany
Key Offering: Compact water‑cooling units for residential and small‑commercial applications

Bosch’s engineering focus on compactness and energy efficiency supports the deployment of water‑based systems in space‑constrained environments. The company’s commitment to high‑quality manufacturing ensures long‑term reliability.

Sustainability Initiatives:

• Targeting 30% reduction in CO₂ emissions from product life cycles by 2030
• Investing in research on corrosion‑resistant materials for water‑based cycles
• Partnering with local utilities to pilot water‑based cooling in district‑level projects

R718 (Water) as Refrigerant Market – View in Detailed Research Report

R718 (Water) as Refrigerant Market – View in Detailed Research Report

FUTURE OUTLOOK

The trajectory of R718 adoption is set to accelerate as regulatory frameworks tighten and technology costs decline. The convergence of digital control platforms, predictive maintenance, and renewable‑energy integration will position water‑based cooling as a cornerstone of low‑carbon infrastructure. Operators that embed these capabilities early will capture a larger share of the market, benefiting from lower operating costs and enhanced brand reputation.

EMERGING TRENDS

Key trends shaping the next decade include:

• Hybrid water‑based systems that combine R718 with low‑GWP secondary refrigerants for ultra‑low temperature applications
• Digital twins and real‑time analytics that optimise water‑cycle performance across the supply chain
• Financing models that lower upfront cost for small‑to‑medium enterprises, broadening market reach
• Strategic partnerships between OEMs and local engineering firms to accelerate adoption in emerging economies
• Regulatory incentives that reward zero‑GWP deployment, creating a favorable investment climate