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Why buy MRCOOL from Wild Oak Trail?
Authorized dealer. DIY experts. Reliable shipping.
Authorized Dealer (Full Warranty Protection)
Expert Guidance on DIY Installation
Clear Communication & Installation Support
Fast, Free Shipping on All Systems
MRCOOL DIY Mini Splits
Official Partner Authorized Dealer for MRCOOL
Stop Wasting Money on HVAC Installers!
Take control of your home's temperature today! MRCOOL systems deliver powerful cooling and heating exactly where you need it. You get smart control, massive energy savings, and reliable performance without draining your bank account. These DIY Systems are designed to eliminate expensive contractor fees forever. Connect the pre-charged lines yourself using standard wrenches—no vacuum pumps or specialized training needed.
True DIY Installation Pre-Charged Lines Smartphone Control No Vacuum Pump Lifetime Warranty Free Shipping
Keep Your Cash with True DIY Installation
MRCOOL DIY® 5th Gen Series — Eliminate expensive contractor fees forever! The MRCOOL DIY® series features the patented Quick Connect® line set that comes pre-charged with eco-friendly R-454B refrigerant. You connect the lines yourself using standard wrenches—no vacuum pumps or specialized training needed.
- Secure Long-Term Protection: Get a Limited Lifetime Compressor Warranty upon registration.
- Control From Anywhere: Adjust temps via the SmartHVAC app or voice commands.
- Slash Energy Bills: High SEER2 ratings reduce your monthly electrical usage significantly.
Get Pro Performance for Less
MRCOOL Advantage 5th Gen Series — Enjoy premium features without the premium price tag! The Advantage Series 5th Gen is the ultimate cost-effective solution for spaces requiring professional installation. These units offer the same smart WiFi capabilities and Gold Fin® corrosion protection as top-tier models.
- Fit Any Setup: Available in 115V and 230V options to match your wiring.
- Stop Rust: Gold Fin® technology stops corrosion to extend unit life.
- Future-Proof: Uses compliant, low-GWP R-454B refrigerant.
Hide Your AC with Ceiling Cassettes
DIY® Series OuttaSight® Ceiling Cassettes — Reclaim your walls! MRCOOL® DIY® OuttaSight® cassettes fit flush between standard 16" ceiling joists and vanish into your room. They connect seamlessly to DIY® Multi-Zone condensers for invisible comfort you install yourself.
Product Comparison
DIY® 5th Gen
For You (Self-Install)
Best For Homeowners (DIY)
Installation No Tools / No Vacuum
Warranty Limited Lifetime
Refrigerant Pre-Charged (R-454B)
Smart App Included
Efficiency Up to 22 SEER2
VS
Advantage 5th Gen
For Pros (Hired Help)
Best For Budget (Hire a Pro)
Installation Pro Required
Warranty 1-Yr Parts / 2-Yr Comp
Refrigerant Site Charged (R-454B)
Smart App Included
Efficiency Up to 21.5 SEER2
Quick Specs: DIY® Multi-Zone Condensers
| Model |  |
 |
 |
 |
 |
|---|---|---|---|---|---|
| Model SKU | DIY-MULTI3-18HP | DIY-MULTI4-27HP | DIY-MULTI5-36HP | DIY-MULTI6-48HP | DIY-MULTI6-55HP |
| Capacity | 18k BTU | 27k BTU | 36k BTU | 48k BTU | 55k BTU |
| Max Zones | 3 Zones | 3 Zones | 5 Zones | 6 Zones | 6 Zones |
| Rec. Area | 750-1,100 sq. ft. | 1,100-1,400 sq. ft. | Up to 1,550 sq. ft. | 2,000-2,500 sq. ft. | 2,800-3,200 sq. ft. |
Capacity 18k BTU
Max Zones 3
Area 750-1,100 sq. ft.
Capacity 27k BTU
Max Zones 3
Area 1,100-1,400 sq. ft.
Capacity 36k BTU
Max Zones 5
Area Up to 1,550 sq. ft.
Capacity 48k BTU
Max Zones 6
Area 2,000-2,500 sq. ft.
Capacity 55k BTU
Max Zones 6
Area 2,800-3,200 sq. ft.
Frequently Asked Questions
Can I install MRCOOL Advantage myself?
No. The Advantage Series requires a licensed HVAC professional to evacuate and charge the lines to ensure warranty coverage.
Do I need a vacuum pump for the DIY Series?
No. The DIY Series uses pre-charged Quick Connect® lines, so no vacuuming or special tools are required for installation.
What is the difference between 115V and 230V?
115V uses standard household outlets, while 230V requires a dedicated higher-voltage circuit, often used for larger capacity units.
What is R-454B refrigerant?
R-454B is a new eco-friendly refrigerant with a lower Global Warming Potential (GWP) than older R-410A, meeting new regulations.
Can MRCOOL heat in freezing weather?
Yes! The DIY® 5th Gen Series heats your home efficiently even when outdoor temperatures drop to -13°F.
Is MRCOOL compatible with Alexa or Google?
Absolutely! All 5th Gen models integrate with Amazon Alexa, Google Assistant, and the SmartHVAC app.
How many rooms can one system handle?
The DIY® Multi-Zone condensers can power up to 6 independent zones from a single outdoor unit.
How do I get the Lifetime Warranty?
Simply register your DIY® system in the MRCOOL® Care Program to unlock the Limited Lifetime Compressor Warranty.