Every once in a while, replacing your air conditioner becomes an essential home upgrade.
As one of the leading HVAC companies in Minnesota, we get this question all the time — how long does AC replacement take?
We won’t waste your time. In most cases, AC replacement takes between 4 to 8 hours, but the exact duration depends on several factors — including your home’s size, the AC type, existing ductwork, and accessibility.
Let’s dive into the full breakdown.
1. Type of Installation: Changeout vs. Full System Replacement
🔧 Changeout Installation
This is the fastest type of replacement. It involves swapping only the indoor and outdoor units, keeping the existing ductwork, wiring, and thermostat.
- Timeframe: Typically 4 to 6 hours
🏠 Full System Replacement
This includes installing a new AC unit, ductwork, thermostat, and possibly upgrading electrical systems. It’s more complex and labor-intensive.
- Timeframe: 1 to 3 days, depending on the scope
2. AC Unit Size and Home Layout
The larger your home, the more cooling power is needed — which may lengthen the installation time. Homes with open floor plans, vaulted ceilings, or multi-level layouts often require more work.
- Bigger homes = bigger units = longer installs
3. Type of Air Conditioner Being Installed
Split Systems
These are the most common in residential settings, featuring both an indoor air handler and outdoor condenser. Installation is relatively straightforward.
Packaged Units
All components are housed in a single outdoor unit. They’re ideal for homes with limited indoor space but may take longer to install — especially if mounted on rooftops.
- Estimated Time: 6 to 10 hours
4. Site Accessibility
Installations go faster when:
- Units are easily accessible
- Basements and crawlspaces are clear
- Technicians can move equipment freely
Tight or awkward spaces require extra care and time.
5. Permit and Inspection Requirements (Minnesota-Specific)
In Minnesota, permits are often required for AC installations. After installation, your HVAC system might need to pass an inspection.
- Note: This won’t delay the physical install but can postpone activation by a day or more, depending on inspector availability.
What Happens During an AC Replacement?
Understanding each phase helps you see why AC replacement times vary.
🏡 Home Assessment & Preparation
The contractor evaluates your home’s cooling needs, ductwork, and unit placement.
❌ Old Unit Removal
Refrigerant is safely recovered, and the old unit is disconnected and removed.
✅ New System Installation
The new unit is installed, wired, and connected to the ductwork and thermostat.
🔄 System Testing & Calibration
Technicians check refrigerant levels, airflow, and thermostat functionality.
🧹 Cleanup & Walkthrough
The job wraps up with a site cleanup and a walkthrough of your new system, warranty, and maintenance tips.
How to Speed Up the AC Replacement Process
Want to keep things moving quickly? Here’s what you can do:
- Clear space around indoor/outdoor units
- Secure pets and keep walkways open
- Have questions ready for your technician
- Hire a trusted HVAC company to avoid delays
In a Nutshell: How Long Does AC Replacement Take?
Most AC replacements in Minnesota take 4 to 8 hours, especially if it’s a direct system swap. However, full system upgrades or ductwork replacements can stretch the timeline to multiple days.
No matter how long it takes, the key is making sure your replacement is safe, code-compliant, and built to last.
FAQs
1. How long does AC replacement take in Minnesota homes?
Generally, 4 to 8 hours, depending on the job’s complexity.
2. Is AC replacement faster if I upgrade to the same model?
Yes. Replacing your AC with a similar model can reduce labor and speed things up, usually finishing in a single workday.
3. Can AC replacement be done in winter or early spring?
Absolutely. In fact, off-season installations often get scheduled faster due to lighter demand.
