Cassettefrom $1,312
What is the difference between MRCOOL Advantage and DIY?
Short answer: It comes down to labor. Advantage is MRCOOL's lower-priced single zone mini split that must be installed by an HVAC professional, who connects the lines, pulls a vacuum and checks for leaks. The DIY Series comes with pre-charged Quick Connect line sets so you can install it yourself, which usually makes it the cheaper system once the installer's bill is counted.
Both are MRCOOL ductless heat pumps that cool, heat and dehumidify one room or zone. We only sell the DIY lines, and further down we explain why. First, here's what each one asks of you.
What is the MRCOOL Advantage?
MRCOOL describes the Advantage as a single zone mini split at a lower price point. Its own product page is direct about the install: it is not a DIY system and must be installed by an HVAC professional.
That's because the Advantage uses a conventional refrigerant connection. The installer joins the line set at both units, pulls the lines into a deep vacuum with a pump and gauge, checks that it holds, and then opens the refrigerant into the system. Done right, it works well. Done wrong, moisture or a slow leak can shorten the life of the compressor.
MRCOOL's Advantage warranty paperwork is written around installation by a licensed HVAC contractor. If you skip the contractor, plan on having no warranty to fall back on.
What is the MRCOOL DIY Series?
The DIY Series ships with line sets already filled with R-454B at the factory. You thread the Quick Connect fittings onto each unit, tighten them, and the refrigerant side is finished. No vacuum pump, no gauges and no HVAC tech for that step.
MRCOOL's DIY warranty covers a homeowner install for the original owner, as long as you register the system. We carry three DIY lines:
- DIY Select, from $1,249 (prices as of November 2026): 9K to 24K, 1 year parts and 2 years compressor, white or black indoor unit.
- DIY EasyPro, from $1,487: 9K to 24K, leak detection, Follow Me, ENERGY STAR on 12K to 24K, 3 years parts and 5 years compressor.
- DIY 5th Gen, from $2,329: 9K to 36K, up to 23.6 SEER2, multi-zone for 2 to 6 rooms, 5 years parts and 7 years compressor.
EasyPro and 5th Gen also offer a lifetime compressor option with registration and MRCOOL's paid Care program. Our DIY comparison chart lists every difference.
Which one costs less once it's installed?
The Advantage price you see online is equipment only. To compare fairly, you have to add everything it takes to get cold air in the room.
| Cost item | MRCOOL Advantage | MRCOOL DIY |
|---|---|---|
| Equipment | Usually lower than DIY at the same size | From $1,249 (Select 9K) |
| HVAC tech for lines, vacuum, leak check, startup | Required | Not needed |
| Electrician for the dedicated circuit | Often part of the contractor's quote | Usually hired separately |
| Disconnect, whip, pad, line set cover | Often part of the contractor's quote | About $432 from us ($59 + $72 + $172 + $129) |
| Permit | Contractor pulls it | You pull it, typically about $50 to $300 |
| Warranty condition | Licensed HVAC install | Registered DIY install |
Here's the simple test. Take the HVAC contractor's labor for the Advantage and compare it with the price gap between the Advantage equipment and a DIY system of the same size. If the labor is bigger than the gap, the DIY system costs you less in total.
A real example with our numbers: a DIY Select 12K is $1,399, and with the four accessories above the parts come to $1,831. A DIY EasyPro 12K lands at $2,031 with the same parts. Both need an electrician unless your town lets you wire the circuit yourself.
This is the step that replaces the vacuum pump and gauges an Advantage installer would bring.
Next: what does a DIY install cost with every part added?
Why do we sell only the DIY lines?
Our customers install their own systems. Many call us because they'd rather not wait on a contractor's schedule or pay for labor they can do themselves on a Saturday.
Selling the Advantage to that buyer would set them up badly. They'd get a unit that needs a vacuum pump and a licensed tech, and a warranty that depends on that tech. People who already have a contractor usually buy the equipment through that contractor anyway.
So we stick to systems a homeowner can put in and still keep the warranty: DIY Select, DIY EasyPro and DIY 5th Gen, plus the line sets and accessories that go with them.
Who should pick Advantage, and who should pick DIY?
An Advantage makes sense when:
- An HVAC contractor you trust is already doing the job and recommends it.
- The contractor's quote for the full install is lower than a DIY system plus your electrician.
- Nobody in the house wants to drill a 3 in hole through an outside wall or mount the outdoor unit.
- One room is all you need, and a single zone fits.
A DIY system is the better fit when:
- You'd rather do the mounting and hire only the electrician.
- Contractors near you are booked out, or won't take a one-room job.
- The plan includes two to six rooms, which the DIY 5th Gen multi-zone handles on one outdoor unit.
- Keeping the warranty without a licensed HVAC tech matters to you.
Not sure you can manage the install? Run through our DIY self-check first.
What if your situation is different?
What if I already bought an Advantage and want to put it in myself?
Don't open the refrigerant valves without a licensed tech. Without the vacuum and leak check you risk the compressor, and the warranty is tied to a licensed install. Find a local HVAC tech to do the line connections and startup, even if you do the mounting.
What if the run from the indoor unit to the outside is long?
Pre-charged line sets come in 16, 25, 35 and 50 ft, and a coupler kit joins two of them for 66 or 75 ft. The DIY 5th Gen includes 25 ft in the box. DIY Select and DIY EasyPro ship with 11.5 ft and can be extended with a separate pre-charged line set, which adds cost. Check the line set chart in your system's manual for the exact part.
What if my winters drop below −13°F?
All three DIY lines keep heating down to −13°F outside. Below that, keep a backup heat source or size up, and call us for cold-climate sizing.
What if I need more than one room?
The Advantage is a single zone product. For several rooms on one outdoor unit, look at the DIY 5th Gen multi-zone systems, from $2,923 for two rooms with a 16 ft line set per room.
Next: DIY Select, EasyPro or 5th Gen, which one should you buy?
What should you do next?
Measure the room and pick a size with our sizing guide. Then measure the path the line set will take from the indoor unit to the outdoor spot, so you know whether the line set in the box is long enough.
If you have an Advantage quote and want to check a DIY system of the same size against it, call us at +1 (844) 999-9725, Monday to Friday, 9 AM to 5 PM EST, or text 302-385-6142. We'll help you choose the size and line.
