If you're planning to replace your air conditioning system in Mission Viejo anytime soon, there's a major change you need to know about. Starting January 1, 2026, the refrigerant that's been cooling Southern California homes for years, R-410A, is being phased out in favor of more environmentally friendly alternatives. 

This isn't just an industry rumor. It's federal law under the American Innovation and Manufacturing (AIM) Act, and it's going to affect every homeowner who needs a new AC system from 2026 forward. 

Here's what you need to know before you make any decisions about your HVAC system. 

What's Actually Changing? 

The refrigerant that circulates through your air conditioning system is what makes cooling possible. For the past couple of decades, R-410A has been the industry standard. It replaced older refrigerants like R-22 (Freon) that were harmful to the ozone layer. 

Now, R-410A is getting replaced too, not because it damages the ozone, but because it has a high global warming potential (GWP). The federal government has mandated a shift to refrigerants with lower GWP to reduce the climate impact of cooling systems. 

Starting in 2026, all new residential air conditioning systems must use these newer, lower-GWP refrig erants. The most common replacements are what the industry calls A2L refrigerants, including R-454B and R-32.

What Are A2L Refrigerants? 

Let's keep this simple. A2L refrigerants are the next generation of cooling technology. They're de signed to be: 

  • Safer for the environment – They have a much lower global warming potential than R-410A. • Still effective – They cool your home just as well as older refrigerants. 
  • Mildly flammable – Yes, technically, but they're classified as "lower flammability" and are safe when installed and handled by trained professionals. 

That last point makes some homeowners nervous, but here's the reality: A2L refrigerants have been used safely in Europe and Asia for years. With proper installation by a licensed HVAC technician, they pose no more risk than the gas appliances already in your home. 

At One Hour Heating & Air Conditioning of Mission Viejo, we're a Bryant Factory Authorized Deal er, and Bryant has already rolled out systems designed specifically for A2L refrigerants. 

Bryant logo

We also service all major brands, including Carrier, Lennox, and others, so whether you're upgrading or need emergency repair, we've got you covered. 

What This Means for Mission Viejo Homeowners If your AC system is working fine right now, you don't need to panic. Here's the breakdown:

If You're Replacing Your AC in 2026 or Later 

Any new air conditioning system you purchase after December 31, 2025, will use A2L refrigerants. That's the law. You won't have a choice, but that's not necessarily a bad thing. These systems are de signed to be energy-efficient and environmentally responsible. 

If You're Replacing Your AC Right Now 

If you're replacing your system before the end of 2025, you can still get a unit that uses R-410A. In fact, equipment purchased before January 1, 2026, can be installed up until January 1, 2027, giving you a transition window. 

But here's the thing: if you're on the fence about upgrading, you might want to move sooner rather than later. R-410A systems are still widely available, and they'll continue to be serviced for years to come. 

If Your Current System Just Needs Repair 

Good news: existing AC systems can continue operating indefinitely with their current refriger ants. If your system uses R-410A or even older R-22, you can keep servicing it throughout its useful life, provided the repairs don't require a full system replacement. 

If you need Mission Viejo HVAC repair for an older system, we can handle that. And if it's an HVAC emergency repair near me situation, we're available 24/7 to get your system back up and running. 

Will the New Systems Cost More? 

Let's be honest: yes, A2L-compatible systems are likely to cost a bit more upfront. The technology is newer, and manufacturers have invested heavily in research, development, and retooling their pro duction lines. 

But here's what balances that out: 

  • Energy efficiency – Many A2L systems are more efficient, which means lower utility bills over time. 
  • Federal tax credits – Energy-efficient HVAC systems often qualify for tax incentives. • Long-term value – You're buying a system that meets current regulations and will be supported by manufacturers for decades. 

At One Hour Heating & Air Conditioning of Mission Viejo, we believe in StraightForwardPricing®. That means no hidden fees, no surprise charges, and no pressure tactics. We'll give you a clear break down of what your new system will cost: and we'll explain your financing options so you can make the best decision for your home and budget. 

Check out our current special offers and financing options to see how we make HVAC upgrades more affordable.

What Should You Do Right Now? 

If your AC is limping along and you know it's on borrowed time, here's your game plan: 

  1. Get an honest assessment. 

Don't wait until it fails on a 95-degree day in Lake Forest or Laguna Niguel. Call us for a no-pressure inspection. We'll tell you whether your system has another summer or two in it: or if it's time to start planning for a replacement. 

  1. Ask about your options. 

Whether you want an R-410A system before the deadline or you're curious about the new A2L tech nology, we'll walk you through the pros and cons. As a Bryant Factory Authorized Dealer, we have ac cess to the latest equipment, but we also service Carrier, Lennox, and every other major brand out there. 

  1. Don't ignore emergency repairs. 

If your system breaks down in the middle of the night, don't wait until morning. Emergency repairs can often save a system that would otherwise need full replacement. We offer 24/7 emergency repair service throughout Mission Viejo and surrounding areas like Foothill Ranch, Rancho Santa Margarita, and San Juan Capistrano. See our full service area here. 

The Bottom Line 

The 2026 refrigerant change is a big deal, but it doesn't have to be complicated. Whether you're re placing your AC this year or planning ahead for the future, the most important thing is working with a company that knows what they're doing. 

At One Hour Heating & Air Conditioning of Mission Viejo, we've been serving South Orange County for years. We're not just technicians: we're your neighbors. We live here, we work here, and we care about keeping your home comfortable, no matter what changes the industry throws at us. 

If you have questions about the refrigerant transition, want to schedule a system evaluation, or need emergency repair, give us a call. We'll explain everything in plain English: no jargon, no upselling, no runaround. 

Just honest service from people who actually care about your comfort. 

Ready to talk about your AC options? Call One Hour Heating & Air Conditioning of Mission Viejo today.