AIM Act Alert: How the HVAC Industry Is Cooling Down Climate Change

The HVAC industry is undergoing a transformative shift driven by growing concerns over climate change. At the heart of this shift is the U.S. AIM Act, a landmark piece of legislation designed to phase down the use of hydrofluorocarbons (HFCs)—potent greenhouse gases widely used in air conditioning and refrigeration.

For HVAC professionals and homeowners alike, understanding the AIM Act isn’t just about meeting new legal requirements. It's about preparing for a future shaped by more sustainable practices, advanced technology, and smart energy use. Here's what you need to know to stay ahead.

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Why the AIM Act Matters

The American Innovation and Manufacturing (AIM) Act was signed into law in December 2020 as part of the U.S. strategy to reduce climate-warming emissions. HFCs, though once seen as a safe replacement for ozone-depleting chemicals, have extremely high global warming potential (GWP). Some HFCs are thousands of times more potent than carbon dioxide in trapping heat in the atmosphere.

The AIM Act aims to cut HFC production and consumption in the U.S. by 85% by 2036. The phasedown mirrors global efforts under the Kigali Amendment to the Montreal Protocol, ensuring U.S. alignment with international environmental standards.

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But this legislation does more than reduce emissions—it’s a call for innovation. By transitioning away from high-GWP refrigerants, the HVAC industry is being encouraged to adopt cleaner, smarter technologies that benefit the environment and consumers.

What Are HFCs and Why Are They Being Phased Out?

HFCs are synthetic refrigerants used in air conditioners, refrigerators, heat pumps, and other cooling systems. They replaced ozone-damaging CFCs and HCFCs in the 1990s. While HFCs are safer for the ozone layer, they are exceptionally harmful when it comes to global warming.

Unlike CO₂, which stays in the atmosphere for centuries, HFCs can deliver intense heat-trapping effects in shorter time spans—making their reduction a priority in the fight against climate change.

By phasing them out, the AIM Act pushes both manufacturers and end users toward low-GWP alternatives that are safer for the planet and increasingly viable thanks to technological advances.

What the AIM Act Requires

The AIM Act is structured around three key components:

• A Gradual Phase Down of HFCs: The law sets a clear timeline to cut HFC production and use in the U.S. by 85% over the next 15 years.

• Management of Existing Refrigerants: This includes standards for safe handling, recycling, and disposal of HFCs to limit their release into the atmosphere.

• Support for Innovation: The Act fosters the development and adoption of low-GWP refrigerants through funding and regulatory support.

For HVAC businesses, this means adapting system designs, updating refrigerant practices, and investing in training and new technologies. For homeowners, it means planning for the future of home comfort systems.

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HFC Phase Out Timeline You Need to Know

The HFC phase out under the AIM Act is happening in stages:

• 2022: 10% reduction in HFCs compared to baseline levels

• 2024: 40% reduction

• 2029: 70% reduction

• 2034: 80% reduction

• 2036: 85% total phasedown

Each step gives the industry time to innovate and consumers time to prepare. Understanding this timeline helps HVAC professionals plan retrofits or upgrades, while homeowners can assess when to update their systems for compliance and efficiency.

How HVAC Pros Are Adapting

The AIM Act is reshaping how HVAC systems are designed, installed, and serviced. HVAC technicians must now be fluent in emerging refrigerants, new safety protocols, and energy-efficient designs.

Key areas of change include:

• Refrigerant Knowledge: Understanding the characteristics of low-GWP alternatives such as hydrofluoroolefins (HFOs) and natural refrigerants.

• System Compatibility: Retrofitting older systems or installing equipment designed for modern refrigerants.

• Ongoing Training: Staying current with regulations, tools, and safety certifications.

The Act also opens opportunities for HVAC professionals to lead sustainability efforts in their communities, positioning themselves as trusted experts in an evolving market.

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What Homeowners Should Expect

For homeowners, the AIM Act’s impact might not be immediate—but it will be significant over time.

Here’s what to consider:

• System Upgrades: Older systems using phased-out refrigerants may become more costly to maintain or impossible to service. Planning upgrades early can reduce future headaches.

• Energy Efficiency: Newer systems using low-GWP refrigerants tend to be more energy-efficient, lowering utility bills.

• Environmental Impact: Switching to a system with sustainable refrigerants reduces your carbon footprint and contributes to broader climate goals.

Proactive homeowners who engage with HVAC professionals now can make informed choices that align with both financial goals and environmental values.

Eco-Friendly Refrigerant Alternatives to Consider

As HFCs are phased down, eco-friendly refrigerant alternatives are becoming more mainstream. Here are the most common options:

• Hydrofluoroolefins (HFOs): Low-GWP, non-ozone-depleting, and increasingly compatible with modern HVAC equipment.

• Natural Refrigerants:

• Ammonia: Highly efficient but toxic—used mainly in industrial settings.

• Carbon Dioxide (CO₂): Safe and effective but requires high-pressure systems.

• Hydrocarbons (e.g., propane, isobutane): Low GWP and efficient but flammable, requiring specialized equipment.

Some systems use blended refrigerants that balance performance, efficiency, and safety. Choosing the right alternative involves evaluating design for safety, system compatibility, local regulations, and overall cost-effectiveness.

How HVAC Businesses Can Stay Compliant

To stay compliant and competitive, HVAC businesses should follow these best practices:

• Stay Informed: Monitor EPA updates, refrigerant approvals, and safety standards.

• Educate Your Team: Train technicians regularly on emerging refrigerants and technologies.

• Update Equipment: Retrofit systems or invest in new models compatible with low-GWP alternatives.

• Implement Responsible Handling: Recover, recycle, and dispose of refrigerants properly to minimize environmental impact.

• Use Certified Suppliers: Work with trusted sources like The Furnace Outlet for EPA-compliant refrigerants and equipment.

Businesses that embrace the phasedown early are better positioned to grow, innovate, and support their customers through the transition.

Helpful Resources for the Transition

Both professionals and homeowners can benefit from reliable support and information. These resources can help:

• EPA AIM Act Page: For phasedown schedules, refrigerant lists, and legal guidance

• AHRI and ASHRAE: Industry organizations offering training, technical data, and certifications

• Local HVAC Experts: Consultations with certified professionals can help you assess current systems and plan for the future

• The Furnace Outlet: A trusted source for efficient HVAC systems and compliant refrigerants

Staying informed and connected ensures you make decisions that are both sustainable and cost-effective.

Looking Ahead: The Future of HVAC Refrigerants

The AIM Act marks a new era in home comfort and commercial cooling. As the U.S. accelerates its commitment to climate-friendly practices, the HVAC industry is stepping up with smarter, cleaner solutions.

For professionals, it’s a chance to lead with innovation and expertise. For homeowners, it’s an opportunity to invest in future-proof systems that lower costs and environmental impact.

Understanding the AIM Act and embracing change now will ensure you're not just compliant, but ahead of the curve.

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