The right MRCOOL system, sized for your home.
Complete MRCOOL DIY mini-split systems at authorized-retailer pricing, shipped free by freight anywhere in the lower 48. Buy online, or call our Ohio team.
One room or several?
Start with the number of spaces you want to condition. Final sizing should be confirmed with a Manual J load calculation.
Shop by capacity
Start with the size of the space
Pick the capacity closest to your room size, then compare every series that makes it.
9KUp to 350 sq ftFrom $2,329.00
12K350–500 sq ftFrom $2,359.00
18K500–750 sq ftFrom $2,909.00
24K750–1,000 sq ftFrom $3,329.00
36K1,000–1,500 sq ftFrom $3,769.00
PreliminaryCoverage shown is preliminary guidance for shopping, not a load calculation.
Shop by series
Four ways to go DIY
Every series is a complete heat-pump kit with a pre-charged line set. Pick the one that fits your budget and climate.
Choose your system
It mostly comes down to one question: are you fixing one room, or the whole house? Here is how the two paths actually differ.
1 roomFrom $2,329.00Single-zone
One indoor unit connects to one outdoor unit, for one room or defined area. The garage, the sunroom, the addition, the bedroom that is always five degrees off.
- Capacities
- 9K to 36K BTU
- Indoor units
- One
- Line set
- Pre-charged, included
- Capacities from 9,000 to 36,000 BTU across four series
- One indoor unit paired to one outdoor unit
- Pre-charged Quick Connect line set included
2 to 6 roomsFrom $2,923.00Multi-zone
One outdoor unit, up to six rooms. Tell us the rooms and we show you the one exact bundle that matches. No nearest match, no guessing.
- Zones
- 2 to 6 rooms
- Indoor units
- Wall or cassette
- Outdoor units
- One
- Ten families covering two to six rooms
- Wall-mount or ceiling-cassette indoor units
- One outdoor unit serves every room
Room by room
Comfort where you actually live
A ductless system conditions the room it is in. No ductwork to run, and no cooling the whole house to fix one warm bedroom.
Heating and cooling in one system
Every DIY system here is a heat pump, so the same equipment works in summer and winter.
Wi-Fi and app control
The listed systems support smartphone app control, and work with Amazon Alexa and Google Assistant.
Pre-charged line set
Every single-zone kit ships with a factory-charged line set; the length is listed on each product.
Shop the collection
Featured systems
Complete systems to start with.
Single-zone
MRCOOL 12k DIY 5th Generation Bundle
Model DIY-12-HP-WM-115D25-O
- Capacity
- 12,000 BTU
- Voltage
- 115V
- Preliminary coverage
- 350-500 sq ft
- Included line set
- 25 ft included
3-zone · ceiling cassette
MRCOOL DIY 3-Zone Ceiling Cassette Systems
- Indoor unit
- Ceiling cassette
Questions before you buy
See all FAQsIs your price the same as MRCOOL's?
Yes. Listed prices follow MAP, the manufacturer's minimum advertised price, so every authorized retailer advertises the same figure. What differs between retailers is shipping, the help you get before you buy, and who answers the phone afterwards.
How does shipping work?
Free curbside freight delivery to the contiguous 48 states. Inspect the equipment before signing. Note any damage on the driver's receipt before you sign.
Can I install a DIY mini split myself?
Yes. The line set is factory-charged and uses Quick Connect fittings. A licensed electrician should run the dedicated circuit, and permit requirements vary by locality, so check with your building department before you start.
Is my order accepted as soon as I check out?
Not necessarily. An order confirmation is not final acceptance. Orders are reviewed for payment authorization, product availability, shipping restrictions and pricing before fulfillment, and high-value equipment may get additional verification first.
Can you help me find an installer?
Yes. Tell us about the project and we'll follow up. Equipment is sold separately from installation, so a request starts a conversation about the work rather than booking an appointment.