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
DIY HVAC systems, MRCOOL, Mini-Splits, Air Conditioning
  • 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
      • Shop All DIY 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›
    TravelCool rooftop RV air conditioner at a lakeside campsite Comfort for the roadRV air conditioningTravelCool RV Air ConditioningRooftop cooling and supplemental heat-pump heating for RV applications.Explore TravelCool →
    • TravelCool / RV Air Conditioners
    • Monoblock Heat Pumps
    • Compact Refrigeration
    • Water Heaters
    • Industrial HVLS Fans
    • MRBREEZE
    MRCOOL Monoblock heat pump installed through an exterior wall All-in-one HVACMonoblock Heat PumpsHeating and cooling without a separate outdoor unit.Shop Monoblock → MRCOOL compact refrigeration equipment for a walk-in cooler Walk-in coolingCompact RefrigerationSelf-contained refrigeration for walk-in cooler and freezer applications.Explore Refrigeration → MRCOOL industrial HVLS fan installed in a warehouse 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 inFinancingHelp Center
MRCOOL DIY Direct
Log in Cart
    • Build Your System›
      • Multi-Zone System Builder
      • Olympus System Builder
      • Mini-Split BTU Calculator
    • Shop by System›
      • Shop All Mini Splits
      • Shop All DIY 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
    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 →
    • 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
    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 →
  • TravelCool rooftop RV air conditioner at a lakeside campsite Comfort for the roadRV air conditioningTravelCoolInverter-driven rooftop cooling and supplemental heat-pump heating for RV applications.Explore TravelCool → MRCOOL Monoblock heat pump installed through an exterior wall All-in-one HVACMonoblock Heat PumpsHeating and cooling without a separate outdoor unit.Shop Monoblock → MRCOOL compact refrigeration equipment for a walk-in cooler Walk-in coolingCompact RefrigerationSelf-contained refrigeration for walk-in cooler and freezer applications.Explore Refrigeration → MRCOOL industrial HVLS fan installed in a warehouse Large-space airflowIndustrial HVLS FansLarge-diameter fans for warehouses and other expansive spaces.Shop HVLS Fans →
    More specialtyWater Heaters →MRBREEZE →View all Specialty Equipment →
    • 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 →
    • 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 →
    • 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*

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 ↗

Search results

  • MRCOOL DIY three-zone system with three ceiling cassettes, two-fan condenser, line sets and controls

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 48,000 BTU 22 SEER2 (18K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes

    SALE

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 48,000 BTU 22 SEER2 (18K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump with Ceiling Cassettes

    Regular price $8,348.00
    Sale price $8,348.00 Regular price $10,435.00
    You Save: $2,087.00
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $2,087.00
  • MRCOOL DIY 5th Gen Multi-Zone 3-Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump

    SALE

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump

    Regular price $4,792.00
    Sale price $4,792.00 Regular price $5,990.00
    You Save: $1,198.00
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $1,198.00
  • MRCOOL DIY multi-zone system with wall-mounted indoor units, outdoor condenser, line sets and controls

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 48,000 BTU 21.8 SEER2 (18K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

    SALE

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 48,000 BTU 21.8 SEER2 (18K + 18K + 18K) Ductless Mini-Split Air Conditioner and Heat Pump

    Regular price $6,805.00
    Sale price $6,805.00 Regular price $8,506.25
    You Save: $1,701.25
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $1,701.25
  • MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

    SALE

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K + 12K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

    Regular price $4,662.00
    Sale price $4,662.00 Regular price $5,827.50
    You Save: $1,165.50
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $1,165.50
  • MRCOOL DIY 5th Gen Multi-Zone 3-Zone 18,000 BTU 23.9 SEER2 (6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 18,000 BTU 23.9 SEER2 (6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump

    SALE

    MRCOOL DIY 5th Gen Multi-Zone 3-Zone 18,000 BTU 23.9 SEER2 (6K + 9K + 9K) Ductless Mini-Split Air Conditioner and Heat Pump

    Regular price $3,795.00
    Sale price $3,795.00 Regular price $4,743.75
    You Save: $948.75
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $948.75
  • MRCOOL Universal 2nd Gen electric heat kit with circuit breaker (5–20kW)

    MRCOOL Universal (2nd Gen) Air Handler Electric Heat Kit w/ Circuit Breaker — 5kW, 8kW, 10kW, 15kW, 20kW

    SALE

    MRCOOL Universal (2nd Gen) Air Handler Electric Heat Kit w/ Circuit Breaker — 5kW, 8kW, 10kW, 15kW, 20kW

    Regular price $183.00
    Sale price $183.00 Regular price $228.75
    You Save: $45.75
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $45.75
  • close up of MRCOOL 10kW electric heat strip element for HVAC system

    MRCOOL 10kW Heat Kit with Circuit Breaker for Signature Series TruInverter Air Handlers | MCAEHFD10X1BA

    MRCOOL 10kW Heat Kit with Circuit Breaker for Signature Series TruInverter Air Handlers | MCAEHFD10X1BA

    Regular price $139.74
    Sale price $139.74 Regular price
    Unit price /  per 
    ✅ In Stock
    Shop Now
  • MRCOOL electric heat strip kit with heating elements, wiring and circuit breaker

    Electric Heat Kit for MrCool Universal Air Handler - Circuit Breaker

    SALE

    Electric Heat Kit for MrCool Universal Air Handler - Circuit Breaker

    Regular price $155.00
    Sale price $155.00 Regular price $193.75
    You Save: $38.75
    Unit price /  per 
    Shop Now
    Save $38.75
  • Residential Series - Line Set Cover Side Turning Elbows - Premium Quality -

    Residential Series - Line Set Cover Side Turning Elbows - Premium Quality

    SALE

    Residential Series - Line Set Cover Side Turning Elbows - Premium Quality

    Regular price $71.00
    Sale price $71.00 Regular price $88.75
    You Save: $17.75
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $17.75
  • Residential Series - Line Set Cover Inside Corner Elbows - Premium Quality -

    Residential Series - Line Set Cover Inside Corner Elbows - Premium Quality

    SALE

    Residential Series - Line Set Cover Inside Corner Elbows - Premium Quality

    Regular price $71.00
    Sale price $71.00 Regular price $88.75
    You Save: $17.75
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $17.75
  • Residential Series - Painted Metal HVAC Line Set Covers - Premium Quality -

    Residential Series - Painted Metal HVAC Line Set Covers - Premium Quality

    SALE

    Residential Series - Painted Metal HVAC Line Set Covers - Premium Quality

    Regular price $228.00
    Sale price $228.00 Regular price $285.00
    You Save: $57.00
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $57.00
  • Commercial Series - 24 Gauge Painted Metal HVAC Line Set Covers - Heavy Duty, Multiple Sizes & Colors -

    Commercial Series - 24 Gauge Painted Metal HVAC Line Set Covers - Heavy Duty, Multiple Sizes & Colors

    SALE

    Commercial Series - 24 Gauge Painted Metal HVAC Line Set Covers - Heavy Duty, Multiple Sizes & Colors

    Regular price $286.00
    Sale price $286.00 Regular price $357.50
    You Save: $71.50
    Unit price /  per 
    ✅ In Stock
    Shop Now
    Save $71.50
  • MRCOOL HVAC electronic control-board assembly

    Control Board for MrCool Ductless Heat Pump Condenser, fits DIY-24-HP-C-230C25 and Central Ducted 24k Condenser

    Sold out

    Control Board for MrCool Ductless Heat Pump Condenser, fits DIY-24-HP-C-230C25 and Central Ducted 24k Condenser

    Regular price $430.54
    Sale price $430.54 Regular price $489.06
    You Save: $58.52
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • HVAC electronic control-board assembly

    Electronic Control Box Subassembly Control Board for (DIY-18-HP-C-230C25 ; CENTRAL-18-HP-C-230-25) Condenser

    Sold out

    Electronic Control Box Subassembly Control Board for (DIY-18-HP-C-230C25 ; CENTRAL-18-HP-C-230-25) Condenser

    Regular price $272.95
    Sale price $272.95 Regular price $310.05
    You Save: $37.10
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • MRCOOL HVAC electronic control-board assembly

    Control Board for MrCool Ductless Heat Pump Condenser A-18-HP-C-230B

    Sold out

    Control Board for MrCool Ductless Heat Pump Condenser A-18-HP-C-230B

    Regular price $315.18
    Sale price $315.18 Regular price $358.02
    You Save: $42.84
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • MRCOOL HVAC electronic control-board assembly

    PCB Control Board for MRCOOL Central Heat Pump Condenser – ProDirect Series, Model #HAH14036

    Sold out

    PCB Control Board for MRCOOL Central Heat Pump Condenser – ProDirect Series, Model #HAH14036

    Regular price $189.52
    Sale price $189.52 Regular price $215.28
    You Save: $25.76
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • Indoor Wall Mounted Air Handler Control Board Model DIY–12–HP-C–115C25 - Genuine MRCOOL Replacement Parts** -

    Indoor Wall Mounted Air Handler Control Board Model DIY–12–HP-WMAH–115C25 - Genuine MRCOOL Replacement Parts**

    Sold out

    Indoor Wall Mounted Air Handler Control Board Model DIY–12–HP-WMAH–115C25 - Genuine MRCOOL Replacement Parts**

    Regular price $200.85
    Sale price $200.85 Regular price $228.15
    You Save: $27.30
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • MRCOOL Universal HVAC electronic control-board assembly

    Mr. Cool 2-3 Ton & 4-5 Ton Universal Series Air Handler Control Board

    Sold out

    Mr. Cool 2-3 Ton & 4-5 Ton Universal Series Air Handler Control Board

    Regular price $271.92
    Sale price $271.92 Regular price $308.88
    You Save: $36.96
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • MRCOOL HVAC electronic control-board assembly

    Genuine MRCOOL Replacement Part: Outdoor Control Board for DIY-MULTI2-18HP230C

    Sold out

    Genuine MRCOOL Replacement Part: Outdoor Control Board for DIY-MULTI2-18HP230C

    Regular price $423.33
    Sale price $423.33 Regular price $480.87
    You Save: $57.54
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • Genuine MRCOOL outdoor condenser main control board for 2-3 Ton Universal Series units, part number 300027060636. Non-returnable item with stock image.

    Outdoor Unit Main Control Board for MRCOOL MDOU18024036 and MDU18048060 Universal Series Condensers

    Sold out

    Outdoor Unit Main Control Board for MRCOOL MDOU18024036 and MDU18048060 Universal Series Condensers

    Regular price $249.26
    Sale price $249.26 Regular price $283.14
    You Save: $33.88
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • MRCOOL HVAC electronic control-board assembly

    Genuine MRCOOL Replacement Control Board for MPH361M414A-1

    Sold out

    Genuine MRCOOL Replacement Control Board for MPH361M414A-1

    Regular price $246.17
    Sale price $246.17 Regular price $279.63
    You Save: $33.46
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • HVAC electronic control-board assembly

    Electronic Control Board Sub-Assembly for Advantage Series Outdoor Condenser - Model A-12-HP-C-115C

    Sold out

    Electronic Control Board Sub-Assembly for Advantage Series Outdoor Condenser - Model A-12-HP-C-115C

    Regular price $239.99
    Sale price $239.99 Regular price $272.61
    You Save: $32.62
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • Genuine MRCOOL Advantage Series Outdoor Condenser Control Board Subassembly (Part #17122000045297) designed for A-09-C-230B, featuring durable components for efficient HVAC system performance.

    MRCOOL Advantage Series Outdoor Condenser Control Board Subassembly - Advantage Series A-09-C-230B

    Sold out

    MRCOOL Advantage Series Outdoor Condenser Control Board Subassembly - Advantage Series A-09-C-230B

    Regular price $277.07
    Sale price $277.07 Regular price $314.73
    You Save: $37.66
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • MRCOOL HVAC electronic control-board assembly

    Genuine Control Board for MRCOOL Ductless Heat Pump Condenser EZPRO-09-HP-C-11516

    Sold out

    Genuine Control Board for MRCOOL Ductless Heat Pump Condenser EZPRO-09-HP-C-11516

    Regular price $244.11
    Sale price $244.11 Regular price $277.29
    You Save: $33.18
    Unit price /  per 
    ❌ Out of Stock
    Shop Now
    Sold out
  • 1
  • …
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9

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›
  • Start a Return›
☷

Programs

  • Pro Contractor Program›
  • Creator Partnership›
  • Motorsports Program›
MRCOOL DIY Direct

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.

Follow Us

© 2026 MRCOOL DIY Direct. All rights reserved.

  • Terms of Service
  • Privacy Policy
  • Price Match Guarantee
  • MRCOOL Creator Partnership
  • Pro Contractor Program
  • Choosing a selection results in a full page refresh.
  • Opens in a new window.