Technical Data
Specs, manuals, videos, and product documents
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The 5th Generation MRCOOL® DIY® 36K BTU 18 SEER Ductless Mini-Split Heat Pumpprovides powerful, efficient climate control for large spaces up to 1,550 sq. ft., offering true DIY installation with no special tools or professional help required. Its pre-charged 25-foot QuickConnect® line set with R-454B refrigerant eliminates vacuuming needs, while the durable DIYPRO® cable replaces traditional electrical conduit, protecting against outdoor elements. The corrosion-resistant Gold Fin® Condenser ensures reliable performance in coastal areas, and multiple control options—including wireless remote, SmartHVAC app, and voice commands via Alexa/Google Assistant—make operation simple and convenient.
Designed for both comfort and efficiency, the system features Follow Me technology that adjusts temperatures based on the remote's location, Dry Mode for humidity control, and an Auto Restart function that preserves settings after power outages. The energy-saving Timer and anti-mildew protection help maintain optimal air quality while reducing excess moisture. With an 18 SEER rating, this heat pump delivers year-round heating and cooling for spaces between 1,000-1,500 sq. ft., combining smart technology with user-friendly operation.
Backed by industry-leading warranties—including a limited warranty, 7-year compressor coverage, and 5-year parts protection—the MRCOOL® DIY® 36K BTU system offers long-term reliability and peace of mind. Its robust construction, easy installation, and advanced features make it an ideal choice for homeowners seeking professional-grade comfort with the convenience of a DIY solution. Whether you need to heat or cool a large space, this system delivers efficient performance and customizable comfort in any season.
Warranty Inquiries are handled through MRCOOL athttps://mrcool.com/contact/
DIY-36-HP-WMAH-230D25-O(Wall Mount Air Handler)
|
BRAND NAME |
MRCOOL |
|
SERIES |
DIY 5th gen Single-Zone Mini-splits |
|
MODEL |
DIY-36-HP-WMAH-230D25-O |
|
GTIN |
00840255587068 |
|
UPC |
840255587068 |
|
SHORT DESCRIPTION |
MRCOOL® 36k DIY 5th Generation Mini-split Air Handler 230v |
|
LONG DESCRIPTION |
The 5th Generation MRCOOL® DIY® 36K BTU Ductless Mini-Split Heat Pump is an efficient and versatile heating and cooling solution for spaces up to 1550 sq. ft. Designed for true do-it-yourself installation, it requires no special tools or professional help, making setup quick, straightforward, and cost-effective. A key feature of this system is the pre-charged 25-foot DIY® QuickConnect® line set, arriving to you already filled with R-454B refrigerant. This eliminates the need for vacuuming, reducing both installation time and expense. The included DIYPRO® cable further simplifies setup by removing the need for electrical conduit while enhancing durability against outdoor elements and wildlife. You can easily control the system using the included wireless remote, the SmartHVAC app on Apple and Android devices, or voice commands through Amazon Alexa and Google Assistant. For enhanced comfort, the Follow Me function ensures even temperature distribution by adjusting airflow based on the remote’s location. Dry Mode helps maintain a pleasant indoor environment by reducing excess humidity. Built for longevity, the Gold Fin® Condenser resists corrosion, making it ideal for coastal areas. This system is backed by a robust warranty package, including a limited warranty, a 7-year compressor warranty, and a 5-year parts warranty. Experience effortless installation, smart features, and reliable year-round comfort with MRCOOL® DIY®. |
|
FEATURE LIST |
|
|
TONNAGE |
3 |
|
VOLTAGE (V) |
208/230 |
|
PHASE |
1 |
|
CYCLE |
60 |
|
MAX FUSE BREAKER (A) |
15 |
|
MIN CIRCUIT AMPACITY (A) |
3 |
|
MOUNT TYPE |
Wall |
|
COLOR |
White |
|
MAX COVERAGE AREA |
1550 sqft |
|
DECIBEL RATING LOW (DBA) |
27.5 |
|
DECIBEL RATING HIGH (DBA) |
55.5 |
|
NUMBER OF SPEEDS |
5 |
|
OSCILLATION |
Yes |
|
LIQUID LINE SIZE |
3/8 |
|
SUCTION LINE SIZE |
5/8 |
|
FILTER TYPE |
Reusable |
|
AUXILIARY HEATER INCLUDED |
No |
|
AUXILIARY HEATER AVAILABLE |
No |
|
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 |
|
UL LISTED |
Yes |
|
ETL LISTED |
Yes |
|
AHRI CERTIFIED |
Yes |
|
REGISTERED WARRANTY |
Extended Limited |
|
BASE PARTS WARRANTY |
5 |
|
BASE COMPRESSOR WARRANTY |
7 |
|
HAS BATTERIES |
Yes |
|
CONTAINS ELECTRONICS |
Yes |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
NET DEPTH (IN) |
11.1 |
|
NET HEIGHT (IN) |
14.25 |
|
NET WIDTH (IN) |
49.57 |
|
NET WEIGHT (LBS) |
48.72 |
|
GROSS DEPTH (IN) |
18.74 |
|
GROSS HEIGHT (IN) |
16.57 |
|
GROSS WIDTH (IN) |
53.94 |
|
GROSS WEIGHT (LBS) |
67.9 |
|
BRAND NAME |
MRCOOL |
|
SERIES |
DIY 5th gen Single-Zone Mini-splits |
|
MODEL |
DIY-36-HP-C-230D25-O |
|
GTIN |
00840255586986 |
|
UPC |
840255586986 |
|
SHORT DESCRIPTION |
MRCOOL® 36k DIY 5th Generation Mini-Split Condenser 230v |
|
LONG DESCRIPTION |
The 5th Generation MRCOOL® DIY® 36k BTU 18 SEER Ductless Heat Pump Single Zone Mini Split Condenser makes it easy to stay comfortable year-round. Designed for straightforward installation, this system requires no special tools or professional expertise, making it a great choice for spaces between 1,000-1,500 sq. ft. Installation is hassle-free thanks to the pre-charged 25-foot QuickConnect® line set, which comes filled with R-454B refrigerant, eliminating the need for vacuuming. The DIYPRO® cable adds extra durability, replacing traditional electrical conduit to safeguard against weather, animals, and yardwork damage. Multiple control options let you adjust settings with ease. Use the included remote, the SmartHVAC app on Apple or Android devices, or voice commands via Amazon Alexa and Google Assistant. If you live near the coast, the Gold Fin Condenser offers excellent corrosion resistance, ensuring long-lasting performance. This system includes features that enhance both comfort and efficiency. The Timer function helps manage energy use, while Auto mode keeps your space at your preferred temperature without manual adjustments. After a power outage, the system automatically restores its previous settings. Plus, the anti-mildew function prevents excess condensation buildup inside the air handler. Designed for reliability, the 5th Generation MRCOOL® DIY® Mini Split comes with an industry-leading limited warranty, along with a 7-year compressor and 5-year parts warranty. With innovative technology, easy setup, and long-term dependability, this system delivers efficient climate control without the stress. |
|
FEATURE LIST |
|
|
SEER2 |
18 |
|
EER2 |
8.5 |
|
HSPF2-4 |
8.5 |
|
HSPF2-5 |
6.5 |
|
TONNAGE |
3 |
|
COOLING CAPACITY (BTU) |
36000 |
|
HEATING CAPACITY (BTU) |
36000 |
|
VOLTAGE (V) |
208/230 |
|
PHASE |
1 |
|
CYCLE |
60 |
|
MAX FUSE BREAKER (A) |
35 |
|
MIN CIRCUIT AMPACITY (A) |
33 |
|
COLOR |
White |
|
ZONE CAPACITY |
1 |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
109.7 |
|
DECIBEL RATING (DBA) |
60.5 |
|
INVERTER |
DC |
|
LINE SET LENGTH |
25 |
|
MAX LINESET LENGTH (FT) |
213.2 |
|
LIQUID LINE SIZE |
3/8 |
|
SUCTION LINE SIZE |
5/8 |
|
COMPRESSOR MOTOR TYPE |
Rotary |
|
AUXILIARY HEATER INCLUDED |
No |
|
AUXILIARY HEATER AVAILABLE |
No |
|
FAN ONLY OPTION |
Yes |
|
QUIET MODE |
Yes |
|
AUTO COOL |
Yes |
|
WIFI COMPATIBILITY |
Yes |
|
APP COMPATIBILITY |
Yes |
|
WORKS WITH IOS |
Yes |
|
WORKS WITH ANDROID |
Yes |
|
UL LISTED |
Yes |
|
ETL LISTED |
Yes |
|
AHRI CERTIFIED |
Yes |
|
REGISTERED WARRANTY |
Extended Limited |
|
BASE PARTS WARRANTY |
5 |
|
BASE COMPRESSOR WARRANTY |
7 |
|
HAS BATTERIES |
Yes |
|
CONTAINS ELECTRONICS |
Yes |
|
CONTAINS CHEMICALS |
Yes |
|
CONTAINS AEROSOL |
Yes |
|
CONTAINS COMPRESSED GAS |
Yes |
|
PROPOSITION 65 WARNING |
Yes |
|
NET DEPTH (IN) |
16.14 |
|
NET HEIGHT (IN) |
31.89 |
|
NET WIDTH (IN) |
37.24 |
|
NET WEIGHT (LBS) |
152.12 |
|
GROSS DEPTH (IN) |
19.88 |
|
GROSS HEIGHT (IN) |
37.01 |
|
GROSS WIDTH (IN) |
42.91 |
|
GROSS WEIGHT (LBS) |
183.42 |

Technical Data
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Product FAQs
MRCOOL products are sold through authorized retailers and distributors rather than directly by MRCOOL to consumers. Purchasing through an authorized seller helps confirm that the equipment is genuine and that the correct purchase records are available for product and warranty support.
Do not assume that MRCOOL indoor units, outdoor units, line sets, controls, or accessories are interchangeable. Use only manufacturer-approved combinations for the exact model family; in particular, MRCOOL states that R-410A products are not compatible with R-454B products and the refrigerants must never be mixed.
Eligible MRCOOL DIY systems are designed around installation-friendly components such as factory-precharged line sets and compatible connection hardware. The included components vary by generation and package, and electrical work, permits, clearances, and local code requirements still need to be followed.
MRCOOL does not dispatch field technicians. Its in-house team provides phone and email assistance for diagnosis, troubleshooting, and product guidance, while the owner arranges and pays for any local on-site technician unless a specific written warranty program states otherwise.
The model and serial number identify the exact equipment, generation, capacity, and applicable documentation or warranty. Use the identification labels on the equipment and MRCOOL’s registration guidance rather than relying only on a product title or general series name.
No. Only product families specifically identified by MRCOOL as DIY-capable should be treated as do-it-yourself systems. Other lines, including the Advantage Series, require professional HVAC installation, so always follow the installation requirements for the exact model.
MRCOOL maintains a documentation library and a product support center with model-specific installation manuals, owner manuals, technical documents, certifications, warranty information, and troubleshooting resources. Search using the exact model number because documents can differ by series, generation, capacity, and refrigerant.
MRCOOL offers a broad range of comfort products, including ductless mini-splits, central ducted split systems, packaged heat pumps, geothermal systems, water heaters, fans, thermostats, line sets, and HVAC accessories. Available capacities, refrigerants, efficiencies, and features depend on the exact product family and model.
Register the system as soon as possible after purchase and installation. Several MRCOOL residential warranty programs require registration within 60 days of installation, or within 60 days of purchase when the installation date cannot be verified, but the exact requirement is controlled by the warranty document for the specific product.
MRCOOL recommends starting with the original place of purchase because many dealers can special-order replacement parts. If that is not available, use an authorized MRCOOL parts distributor and confirm compatibility with the exact model and serial number before ordering.
MRCOOL provides support by phone at (270) 366-0457, by email at support@mrcool.com, and through its online support-request form. Have the exact model and serial number available so the support team can identify the correct product documentation and next steps.
Yes. If a local technician is scheduled, MRCOOL’s in-house support team can help coordinate troubleshooting and product guidance with that technician. The technician should have the model, serial number, system configuration, measurements, error codes, and a clear description of the issue available.
MRCOOL’s support center provides separate technical-support sections for ductless systems, residential ducted systems, product-specific error codes, wiring guidance, installation procedures, and troubleshooting articles. Use the exact series and model because codes and procedures are not universal across all MRCOOL equipment.
Register the product through MRCOOL’s online warranty-registration page. Be prepared to provide the serial number along with purchase, owner, installation-location, and installer information requested by the registration form.
No. MRCOOL publishes separate warranty terms for different product families, generations, and applications. For example, the current DIY 5th Generation warranty lists 5-year parts and 7-year compressor coverage, but that coverage should not be assumed for another MRCOOL series; always check the exact product warranty document.