Skip to content

USA's Most Trusted MRCOOL Dealer – Free Shipping On Systems*

Local Help (417) 291-9921 Toll Free (800) 651-9297 Email Support

Live Help Currently Closed

Today's status Currently Closed

Regular hours Mon-Fri 9:00am-5:00pm CT

Weekend Closed Sat-Sun

Email Support

Facebook
YouTube
TikTok

Mini Splits
RecommendedRecommended for multi-zoneBUILD A DIY MULTI-ZONE SYSTEMConfigure zones, indoor units, capacities, and line-set lengths.START BUILDING →

Installation pathDesigned for DIY InstallationHomeowner-oriented systems with factory-precharged connection options.Shop DIY systems →Installation pathProfessional InstallationCompare Olympus and Advantage systems intended for traditional HVAC installation.Compare systems → Planning a complete system?Financing AvailableExplore payment options for a complete multi-zone purchase.View financing →
- Build Your System
  
  Multi-Zone System Builder
  Olympus System Builder
  Mini-Split BTU Calculator
- Shop by System
  
  Shop All Mini Splits
  Single Zone Systems
  Multi-Zone Systems
  DIY Pre-Charged Systems
- Shop by Zones
  
  2 Zones
  3 Zones
  4 Zones
  5 Zones
  6 Zones
- Popular Series
  
  5th Gen DIY
  DIY Hyper Heat
  Easy Pro
  Olympus
Not sure what size?Plan before you buyUse the BTU calculator as a starting point for system sizing.Open BTU calculator →
Central HVAC
DIY hybrid configurationPlan a DIY Hybrid SystemCombine a central ducted air handler with supported wall or cassette zones on a DIY multi-zone condenser.Open Hybrid Builder →

Before you chooseInstallation Varies by ConfigurationSome eligible split systems offer precharged options; packaged, furnace, and traditional configurations follow professional-installation paths.Get selection help → Planning a whole-home purchase?Financing AvailableReview payment options for larger equipment purchases.Explore financing →
- Build & Plan
  
  Build a Central System
  Manual J Load Calculator
  Get a Free Quote
- Shop by System
  
  Central Ducted Heat Pumps
  Dual Fuel Systems
  Package Units
  Gas Furnaces
- Shop by Series
  
  Universal Series
  Hyper Heat Series
  VersaPro Series
  Signature Series
Sizing & planningManual J Load CalculatorEstimate heating and cooling loads before selecting equipment.Open Manual J →
Specialty
Comfort for the roadRV air conditioningTravelCool RV Air ConditioningRooftop cooling and supplemental heat-pump heating for RV applications.Explore TravelCool →
All-in-one HVACMonoblock Heat PumpsHeating and cooling without a separate outdoor unit.Shop Monoblock → Walk-in coolingCompact RefrigerationSelf-contained refrigeration for walk-in cooler and freezer applications.Explore Refrigeration → Large-space airflowIndustrial HVLS FansLarge-diameter fans for warehouses and other expansive spaces.Shop HVLS Fans →
Parts & Accessories
Replacement partsStart with your model numberShop genuine MRCOOL replacement parts. Confirm equipment details before ordering.Shop replacement parts →
- Replacement Parts
  
  Shop All Replacement Parts
  Control Boards
  Fan Motors
- Installation & Accessories
  
  Line Sets
  Installation Kits
  Couplers, Wire & Adapters
  Condenser Mounting
  Tools & Gauges
Installation & accessoriesInstallation essentialsLine sets, mounting, kits, controls, and installation accessories.Shop accessories →
Build & Size
RecommendedPrimary configuration toolBuild a DIY Multi-Zone SystemBuild a matched MRCOOL DIY multi-zone system from zones through line-set lengths.Start building →
- System Builders
  
  Multi-Zone System Builder
  Hybrid System Builder
  Olympus System Builder
- Sizing Tools
  
  Mini-Split BTU Calculator
  Manual J Load Calculator
  HVAC Replacement & Sizing Guide
Sizing toolsFind the right sizeUse the BTU calculator or Manual J tools before choosing equipment.Start sizing → After you planExplore Payment OptionsAfter configuring and sizing your project, review available financing options.View financing →
Learn
- Start Learning
  
  Mini Splits 101
  DIY Installation Guide
  Tools & Calculators
- Help & Reference
  
  DIY FAQs
  Error Codes
  QMID Codes
- Official Product Information
  
  Knowledge Center
  Manuals & Documents
  AHRI & EnergyGuide Resources
- View All Learning Center
Learn the basicsNew to MRCOOL? Start hereGet straightforward guides for choosing, planning, and installing your system.Start learning →
Support
Customer supportHow can we help?Contact our team, track an order, start a return, or find warranty help.Get help →
- Customer Support
  
  Contact Us
  Shipping & Tracking
  Warranty
  Start a Return
- Programs & Policies
  
  Pro Contractor Program
  Price Match Guarantee
  Financing

Log in Financing Help Center

What are you shopping for?

Log in Cart

RecommendedRecommended for multi-zoneBUILD A DIY MULTI-ZONE SYSTEMChoose your zones, indoor units, capacities, and line-set lengths for a matched MRCOOL DIY multi-zone system.START BUILDING →

Installation pathDesigned for DIY InstallationExplore homeowner-oriented mini splits with factory-precharged connection options.Shop DIY systems →Installation pathProfessional InstallationCompare Olympus and Advantage systems intended for traditional HVAC installation.Compare systems → Planning a complete system?Financing AvailableExplore payment options for a complete multi-zone purchase.View financing →
Not sure what size?Plan before you buyUse the BTU calculator as a starting point for system sizing.Open BTU calculator →
DIY hybrid configurationPlan a DIY Hybrid SystemCombine a central ducted air handler with supported wall or cassette zones on a DIY multi-zone condenser.Open Hybrid Builder →

Before you chooseInstallation Varies by ConfigurationSome eligible split systems offer precharged connection options. Packaged, furnace, and traditional configurations follow professional-installation paths.Get selection help → Planning a whole-home purchase?Financing AvailableReview payment options for larger equipment purchases.Explore financing →
Sizing & planningManual J Load CalculatorEstimate heating and cooling loads before selecting equipment.Open Manual J →
- Replacement Parts
  Shop All Replacement Parts
  Control Boards
  Fan Motors
- Installation & Accessories
  Line Sets
  Installation Kits
  Couplers, Wire & Adapters
  Condenser Mounting
  Tools & Gauges
Replacement partsStart with your model numberShop genuine MRCOOL replacement parts. Confirm equipment details before ordering.Shop replacement parts →

Installation & accessoriesInstallation essentialsLine sets, mounting, kits, controls, and installation accessories.Shop accessories →
- System Builders
  Multi-Zone System Builder
  Hybrid System Builder
  Olympus System Builder
- Sizing Tools
  Mini-Split BTU Calculator
  Manual J Load Calculator
  HVAC Replacement & Sizing Guide
RecommendedPrimary configuration toolBuild a DIY Multi-Zone SystemBuild a matched MRCOOL DIY multi-zone system from zones through line-set lengths.Start building →

Sizing toolsFind the right sizeUse the BTU calculator or Manual J tools before choosing equipment.Start sizing → After you planExplore Payment OptionsAfter configuring and sizing your project, review available financing options.View financing →
Learn the basicsNew to MRCOOL? Start hereGet straightforward guides for choosing, planning, and installing your system.Start learning →
- Customer Support
  Contact Us
  Shipping & Tracking
  Warranty
  Start a Return
- Programs & Policies
  Pro Contractor Program
  Price Match Guarantee
  Financing
Customer supportHow can we help?Contact our team, track an order, start a return, or find warranty help.Get help →

110% Price Match Financing

USA's Most Trusted MRCOOL Dealer – Free Shipping On Systems*

What are you shopping for?

MRCOOL DIY DIRECT / LIMITED-TIME PROJECT PACKS

5th Gen E-Star Single-Zone Project Packs

Complete 5th Gen E-Star single-zone systems with LineGuard and a Care Kit. Choose one system or a package for several spaces. Standard freight included on buy-now packages.*

Shop Project Packs ↗

Quote

Need help sizing your system?

Our easy System Builder recommends the perfect system for your space in minutes.

Use the System Builder →

✓

Family-OwnedUSA Business

BBB

BBB AccreditedA+ Rating

▱

Fast & Free ShippingNationwide

☏

Expert SupportDIY Friendly

▢

Shop

Mini Split Systems
Multi-Zone System Builder
Central Ducted Systems
Dual Fuel Systems
HVAC Parts
Accessories

?

Support

BTU Sizing Chart
Installation Checklist
Electrical Requirements
Line Set Length Guide
Troubleshooting & Error Codes
Warranty Registration

▱

Learn

Single-Zone vs Multi-Zone
4th Gen vs 5th Gen
What’s Included in a DIY Kit
How to Size a Mini Split
DIY vs Professional Installation
MRCOOL Mini Split Series Comparison

⌂

Company

About Us
Contact Us
Track Your Order
Return / Refund Policy
Shipping Policy
Financing

☷

Programs

Pro Contractor Program
Creator Partnership
Motorsports Program

The #1 source for DIY mini split systems. Trusted by thousands of homeowners nationwide.

Get Exclusive Offers & Tips

Join our email list and be the first to know.

Email address