How to Prep for Your New R-32 AC Installation: Timeline, Permits & Ductwork Checks

👋 Introduction: Prepping Right = Cooling Right

Hey there, smart shoppers! Mavi here to talk about something homeowners often overlook: how to prep your home before your brand-new R-32 AC system installation.

Whether you’re replacing an aging unit or switching from an older refrigerant to R-32, the prep phase is crucial to ensure that your system operates at peak performance from day one.

In this guide, we’ll walk through:

• 📆 The typical installation timeline and what happens when

• 🧾 Which permits you might need (yes, even for replacements!)

• 🧰 How to inspect and upgrade your ductwork and electrical

• 🧑🔧 Tips to coordinate with your contractor and local code office

• ✅ A homeowner’s checklist to stay on track

Let’s dive in and make sure your R-32 system starts strong — and stays strong.

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⏱️ Step 1: Understand the Installation Timeline

Your installation might seem like a single-day job, but smart planning starts weeks in advance. Here’s a general overview of the ideal timeline:

If you’re working with a reputable contractor, they’ll help coordinate much of this. But the responsibility for scheduling and prep still falls on you — and you want to stay ahead of surprises.

Want to know what a smooth project should look like? Check out this step-by-step residential HVAC replacement guide from the U.S. Department of Energy.

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🧾 Step 2: Permits & Local Code Requirements

Yes, you likely need a permit to install or replace your AC — especially with R-32, since it’s classified as an A2L mildly flammable refrigerant. This means your jurisdiction may have updated inspection protocols.

Why permits matter:

• Ensures the system meets fire safety, electrical, and refrigerant handling codes

• Verifies correct sizing and installation

• Required for home resale in many areas

🏛️ Who pulls the permit?

• Licensed contractor: Most reputable HVAC pros will handle this

• DIY or direct-purchase buyers: You’ll need to contact your local building department

Not sure where to start? Use the ICC Permit Tool to look up your city or county building code office and download required forms.

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🧰 Step 3: Inspect and Upgrade Ductwork

Your shiny new 3 ton R-32 AC unit is only as good as the duct system it’s connected to.

Here’s what to inspect or ask your HVAC tech to evaluate:

• ✅ Duct sizing: Too small = low airflow, too large = inefficient cycling

• ✅ Leaks or gaps: Wasted air = wasted energy

• ✅ Insulation: Especially in attics or crawl spaces

• ✅ Airflow balance: Ensures every room gets even cooling

A recent study from the National Renewable Energy Laboratory found that leaky or unbalanced ductwork can reduce HVAC efficiency by up to 30%. So don’t skip this step — it directly impacts comfort and energy bills.

If your ducts are more than 15–20 years old, you may need a partial or full replacement.

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🔌 Step 4: Check Electrical Panel & Line Voltage

R-32 systems run more efficiently than older models, but they still require a stable power supply. Before installation, make sure your electrical system can handle the load:

• Breaker size: Does your panel support the recommended amperage?

• Dedicated circuit: Most ACs require their own line

• Service disconnect: Needed for safety (and inspection)

• Grounding and surge protection: May be required under current codes

Pro tip: Ask your contractor to verify compliance with NEC Article 440, which covers air conditioning circuit requirements.

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🧹 Step 5: Clear the Area Around the Install Site

For outdoor condensers and indoor air handlers, make sure there’s at least 2 feet of clearance around each unit. This allows:

• Proper airflow

• Safe technician access

• Clean install without debris

You’ll also want to:

• Remove shrubs, fencing, or patio furniture

• Cover electronics or valuables near the indoor unit

• Protect floors if routing new lines

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📋 Savvy Mavi’s R-32 AC Prep Checklist

Here’s your printable checklist to keep on the fridge or clipboard:

✅ Schedule consultation with HVAC contractor
✅ Review local permit requirements
✅ Inspect ductwork for leaks, damage, or poor design
✅ Confirm your electrical panel can handle the load
✅ Order unit and confirm delivery date
✅ Prep installation areas (indoor and outdoor)
✅ Notify utility company if disconnection is required
✅ Schedule inspection (if not handled by contractor)
✅ Discuss refrigerant handling and storage safety for R-32
✅ Set aside funds for surprises (budget 10–15% contingency)

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🤝 Coordinating With Your HVAC Installer

A good contractor will be your best ally during prep and install. Here’s what to confirm:

• Will they pull the permit and schedule inspections?

• Will they seal and test ducts as part of the install?

• Will they register the warranty for you or do you handle it?

• Can they walk you through startup procedures and maintenance tips?

You can also learn what questions to ask your installer from this helpful HVAC hiring guide by Energy Star.

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⚠️ Bonus: Know the Safety Rules for R-32

R-32 is classified as a mildly flammable (A2L) refrigerant, which means:

• Systems must be installed by certified professionals trained for A2L refrigerants

• Leak detectors may be required in small, enclosed spaces

• Proper ventilation and labeling are part of code compliance

Don’t worry — it’s perfectly safe when installed correctly, and it’s actually far less flammable than propane or gasoline. The Air Conditioning, Heating, and Refrigeration Institute (AHRI) offers great resources on how R-32 safety is managed in the field.

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💬 Final Thoughts From Savvy Mavi

Installing a new 3 ton R-32 air conditioner is more than just a delivery and plug-in — it’s a full process that affects your home’s comfort, energy use, and even safety.

By prepping properly — from permits and ductwork to electrical checks and timeline planning — you set yourself up for years of efficient, eco-friendly cooling.

When you're ready to find your perfect system, start with the trusted options at The Furnace Outlet’s R-32 AC Collection. Their customer support team can guide you through compatibility, freight delivery, and more.

Stay cool, stay compliant, and stay savvy! 💚