Can I Install a MRCOOL DIY Mini Split Myself?

Yes, you absolutely can install a MRCOOL DIY mini split yourself.  That's exactly what makes these systems so popular with homeowners. MRCOOL specifically designed their DIY line to be installed by people without HVAC certification, which is pretty revolutionary in the world of air conditioning.

What Makes MRCOOL DIY Different?

The key innovation here is the pre-charged line sets with quick-connect fittings. Traditional mini splits require a licensed HVAC technician because they need to be evacuated and charged with refrigerant – a process that requires EPA certification and specialized equipment. MRCOOL's DIY systems eliminate this requirement entirely.

With a MRCOOL DIY mini split, the refrigerant lines come pre-charged and sealed. You simply connect them using quick-connect fittings (kind of like connecting a garden hose), which means no vacuum pump, no refrigerant handling, and no need to hire a professional for that part of the job.

What Skills Do You Actually Need?

While you don't need HVAC training, you do need some basic home improvement skills:

• Drilling – You'll need to drill a 3.5 inch hole through your exterior wall

• Basic electrical work – Running a dedicated circuit breaker and wiring (or hiring an electrician for this part)

• Mounting equipment – Securing the indoor and outdoor units properly

• Following instructions carefully – The installation manual is detailed, and precision matters

Most handy homeowners can tackle this as a weekend project. If you've ever installed a ceiling fan, mounted a TV, or done basic electrical work, you're probably capable of handling a MRCOOL DIY installation.

The Installation Process Overview

Here's what you're looking at:

1. Choose locations for your indoor and outdoor units (following clearance requirements)

2. Mount the indoor unit on an interior wall

3. Drill through the wall to create a path for the line set

4. Install the outdoor unit on a pad or mounting brackets

5. Connect the pre-charged line sets using the quick-connect fittings

6. Run electrical to both units (120V or 230V depending on the model)

7. Test the system and enjoy your new climate control

The entire process typically takes 4-8 hours for first-timers.

When You Might Still Want Professional Help

Even though these are DIY-friendly, some situations might warrant calling in help:

• Electrical work – If you're not comfortable running a new circuit breaker, hire an electrician for that portion

• Complicated mounting situations – Second-story installations or difficult wall materials

• Multiple zones – Installing several units can be more complex

• Local code requirements – Some jurisdictions have specific permitting rules

What Are Some Great Video Tutorials For DIY Mini Split Installs?

There are quite a few of videos online that walk through the install process that you can follow along with. Here are some of our favorites:

The Bottom Line

MRCOOL DIY mini splits are genuinely designed for self-installation, and thousands of homeowners have successfully installed them. The quick-connect technology removes the main barrier that previously made DIY mini split installation impossible.

If you're reasonably handy, willing to read instructions carefully, and comfortable with basic tools, you can definitely install a MRCOOL DIY mini split yourself. Just plan your installation carefully, take your time, and don't hesitate to call an electrician if the electrical portion feels over your head.

The money you save on installation (typically $500-$1,500) can make this an even more attractive option for heating and cooling individual rooms or additions to your home.

If you have any questions about this, feel free to reach out at 888-231-8920!