MRCOOL DIY® 5th Gen E Star 12,000 BTU Single Zone Mini Split Condenser with 25 ft. Line Set 115V, DIY-12-HP-C-115D25-O
The MRCOOL DIY® 5th Gen 12,000 BTU Single Zone Mini Split is the ideal solution for efficient, year-round heating and cooling in spaces from 350 to 500 sq. ft.—perfect for bedrooms, offices, small living rooms, or studios. Designed to make installation simple and fast, this system delivers reliable comfort and modern convenience, all backed by a best-in-class warranty.
Key Benefits for Contractors and Homeowners
Tool-Free DIY Installation:The included 25 ft. QuickConnect® line set comes pre-charged with R-454B refrigerant, so there’s no need for vacuum pumps or specialty HVAC tools. The DIYPRO® cable streamlines installation by eliminating the need for electrical conduit, saving you time and effort (source).
Smart Comfort Control:Control the system with a wireless remote, SmartHVAC app (for Apple and Android), or voice commands via Amazon Alexa or Google Assistant.
Coastal-Ready Durability:Gold Fin® technology provides superior corrosion resistance, making this unit a great choice for coastal and humid environments.
Eco-Friendly & Efficient:Equipped with R-454B refrigerant, which has a significantly lower Global Warming Potential (GWP) than older refrigerants like R-410A, this system is both environmentally responsible and energy efficient.
Industry-Leading Warranty:Enjoy peace of mind with a limited lifetime warranty, 7-year compressor warranty, and 5-year parts warranty.
Certified Quality:Intertek listed (5031495) for proven safety and reliable performance.
Standout Features
Fast, easy installation—no special tools or prior experience required
Gold Fin® condenser—long-lasting performance, even in harsh climates
Smart, wireless control—modern convenience for every user
Eco-friendly refrigerant—future-proof and energy efficient
Choose the MRCOOL DIY® 5th Gen 12K BTU for your next project and deliver comfort, reliability, and satisfaction—every time.
SPECIFICATIONS & DIMENSIONS
Dimensions & Weight
Dimensions
30.12 W" x 11.93 D" x 21.85 H"
Weight
65.48 lbs / 29.7 kg
DIY-12-HP-C-115D25-O Capacity & Performance
Zone Capacity
1
Cooling Capacity
12,000 BTU
EER2
12.5
SEER2
23.5
Heating Capacity
12,000 BTU
HSPF2-4
10.2
HSPF2-5
7.6
Coverage Area
350 to 500 sq ft.
Outdoor Noise Level
54 dB(A)
Electrical Requirements
Voltage
115V
Phase
1
Cycle
60 Hz
Max Fuse Breaker
20A
Min Circuit Ampacity
18A
Refrigerant & Piping
Refrigerant Type
R-454B
Refrigerant Volume
30.34 oz
Liquid Line Size
1/4"
Suction Line Size
3/8"
Max Line Set Length
82 ft.
DIY-12-HP-C-115D25-O Features
Inverter
DC
Compressor Type
Rotary
Fan Only Option
Yes
Quiet Mode
Yes
Auto Cool
Yes
Wifi Compatibility
Yes
App Compatibility
Yes
Works with IOS
Yes
Works with Android
Yes
Remote Control Included
Yes
DIY-12-HP-C-115D25-O Certifications & Warranty
Certifications
UL Listed, ETL Listed, Energy Star Certified, AHRI Certified
Warranty
7 Years Compressor 5 Years Parts Extended Limited Lifetime Replacement *If the original owner does not register the unit, the warranty defaults to the standard 5 year parts, 7 year compressor warranty **The original, registered owner must be enrolled in the MrCool Care Program every year in order to qualify for the 7 year full unit replacement for compressor failure and lifetime compressor replacement.
Frequently Asked Questions About MRCOOL DIY® 5th Gen E Star 12,000 BTU Single Zone Mini Split Condenser with 25 ft. Line Set 115V, DIY-12-HP-C-115D25-O
Most Frequently Asked Questions
Other Questions
Product Overview
Zone / ROOM:
1 Zone
Air Handler BTU:
Coverage Area:
500 sq.ft
Condenser BTU:
12k
Outdoor Operating Temp (Cool/ heat):
Warranty
MRCOOL DIY® 5th Gen E Star 12,000 BTU Single Zone Mini Split Condenser with 25 ft. Line Set 115V, DIY-12-HP-C-115D25-O Reviews
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