More and more people are switching to ductless mini-splits than ever, but professional installation can be costly – especially when added to the cost of the system itself. So let's discuss DIY Mini-Split Installation
Don't worry! With many great DIY kits from established brands available, putting in your ductless system is easier than ever and can save you thousands. This quick guide shows how simple installing your system can be in four easy steps.
DIY Mini-Split Tools Required
- Adjustable Wrench
- Drill and Driver
- Hole Saw
- Level
DIY Recommended Materials
- Wall Brackets or Plastic/Concrete Pad (condenser)
- Wall Brackets (evaporator)
- Plastic Line Set Cover Kit
- Screws
Steps to DIY Mini-Split Install
Step 1: Power to your mini-split
First, you need to get power to the system. Mini-splits usually run on 120V or 220V. A small system might allow you to tie into your pre-existing circuit, but the safest practice is dedicating a new breaker line to it by running a cable from the main panel to the unit. Remember to turn off the power before you begin working! Safety first, friends.
Step 2: Condenser Placement
The first step for installing your outdoor unit is finding the best location. Ideal locations should have good air circulation/ventilation, a solid base that can support the unit, and be as obscured from sight and sound as possible. If you can, position the unit to protect it from the weather (snow, rain, sun, etc.).
Install the base for the condenser. If mounting on the ground, place the foundation pad. If wall mounting, install the condenser brackets. Either way, make sure to leave ample clearance around the unit. How much clearance should be specified in the manufacturer's manual, but at least 12" inches is recommended.
Step 3: Air Handler Placement
In the room you want air conditioning, choose an exterior wall that leads to the outside. Like the condensing unit, find an area large enough to house it and where things like furniture or shelving won't block it. The manual should list required clearances. Ensure the spot is free of wires and pipes before you make your hole. Locate the studs and fasten the bracket to them with screws. Make sure to use a level when installing your brackets; it's essential for proper function.
Drill a 2-3" hole in the wall between the brackets. The hole is typically in the lower left or lower right-hand corner but refer to the manufacturer's manual for your specific unit. Create a downward slope with your hole saw to allow condensation to drip down to the outside.
Feed the refrigerant line, drain tubing, and control wiring through the wall (electrical tape helps keep them together). Connect all your lines to the outside condenser, indoor evaporator, and control wire to the circuit. Please note, DIY kit refrigerant lines come pre-charged. Be careful not to cut or break pre-charged lines – this is very dangerous.
Once everything is hooked up, it's time to mount your air handler. Replace any insulation lost in the process for better efficiency.
Last but not least, cover your refrigerant line set with some casing. Metal works great, but plastic is a more cost-effective solution for the DIY'er.
Step 4: Testing the DIY Mini-Split
Make sure to test your system – especially before you need it!
If you need more confidence with electrical or HVAC, having a licensed professional check never hurts to make sure it all checks out. Local inspectors are often happy to help, especially when safety is involved.
Want to DIY?
Check our MRCOOL Do-It-Yourself 4th Generation E Star DIY. Its Sophistication Simplified and Comfort Made Simple. Or check out our entire MRCOOL collection.
E Star DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz
$2,888.00
The E Star DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz is a high-performance heating and cooling solution for medium to large-sized spaces. It is designed for DIY (do-it-yourself) installation and includes everything needed to… read more
Onward to your DIY Journey
We highly recommend if you feel uncomfortable with any of these steps that you get a trained professional to come to help you. Whether that be electrical or HVAC - when in doubt call for help.
Happy heating!
Want More Mini-Split Info?
Want to read more about Mini-Splits? We have all the information you need:
- Where Should I Install My Ductless Mini-Splits
- Best Mini-Split Air Conditioners 2023
- Do Mini-Splits Increase Your Home's Value? Yes, Here's Why
- How To Size Your Mini-Split System
- How Mini-Splits Work
- Are Mini-Splits Right For You?
- Leaky Mini-Split - 5 Quick Reasons Why
Need Help?
Have questions about DIY Mini-Split Installation or need help deciding what mini-split is perfect for you? We would love to assist you in finding the best product for you! Please feel free to reach out to one of our real representatives by chatting with the chat button in the bottom right, calling us at +1 (256) 633-6553, or sending us an email at info@thetradetable.com.
