MRCOOL® 12k DIY 5th Generation Mini-Split Air Handler & Condenser 115V w/ 25ft Pre-Charged Quick Connect® Line Set & DIY® Cable DIY-09-HP-WM-115D25-O
Summary
The 5th Generation MRCOOL® DIY® 9k BTU 23.6 SEER Ductless Heat Pump Single Zone Mini-Split System makes DIY installation simple, requiring no special tools or experience to heat or cool spaces up to 350–400 sq. ft. Featuring a pre-charged 25-foot QuickConnect® line set with R-454B refrigerant, installation is fast, safe, and vacuum-free, while the DIYPRO® cable eliminates the need for electrical conduit, offering extra durability against weather, animals, and outdoor hazards.
Enjoy seamless control via the included remote, SmartHVAC app (iOS/Android), or voice commands (Alexa/Google Assistant). The Gold Fin® Condenser ensures corrosion resistance, ideal for coastal areas, while advanced features like Follow Me mode, Auto Restart, and Dry Mode (for dehumidification) enhance comfort and efficiency.
Backed by an industry-leading warranty—including a limited lifetime warranty, 7-year compressor warranty, and 5-year parts warranty—this system delivers reliable, energy-efficient performance with 23.6 SEER rating. Perfect for hassle-free installation and year-round comfort, the MRCOOL® DIY® series combines innovation, durability, and peace of mind.
What's Included
-
Indoor Units MRCOOL® 9k DIY 5th Generation Mini-split Air Handler 115v w/ DIYPRO® Cable
- Outdoor Unit MRCOOL® 9k DIY 5th Generation Mini-Split Condenser 115v w/ 25ft DIY Quick Connect® Line Set
- Wireless Remote Controls
- Installation Manual
- User’s Manual
- Manufacturer Warranty
Warranty
- 7 year compressor limited warranty
- 5 year parts limited warranty
Warranty Inquiries are handled through MRCOOL at https://mrcool.com/contact/
Technical Information
DIY-09-HP-WMAH-115D25-O (Wall Mount Air Handler)
BRAND NAME |
MRCOOL |
SERIES |
DIY 5th gen Single-Zone Mini-splits |
MODEL |
DIY-09-HP-WMAH-115D25-O |
GTIN |
00840255586993 |
UPC |
840255586993 |
SHORT DESCRIPTION |
MRCOOL® 9k DIY 5th Generation Mini-split Air Handler 115v |
LONG DESCRIPTION |
Check out the new 5th Generation MRCOOL® DIY® 9K BTU Ductless Heat Pump Single Zone Mini-Split Air Handler. Designed for an easy and hassle-free installation, this system requires no special tools or prior experience and effectively heats or cools spaces up to 400 sq. ft. The pre-charged 25-foot DIY® QuickConnect® line set, which is pre-charged with R-454B refrigerant, eliminates the need for vacuuming, making installation faster, easier, and more cost-effective. The included DIYPRO® cable removes the need for electrical conduit, offering added durability against the outdoor elements and wildlife. Control is effortless with multiple options, including the wireless remote, the SmartHVAC app for Apple and Android devices, and hands-free voice commands via Amazon Alexa and Google Assistant. The Gold Fin® Condenser provides superior corrosion resistance for coastal homes, ensuring long-lasting performance in harsh conditions. Designed for both comfort and efficiency, the system's wireless remote features the innovative Follow Me function, which allows the air handler to adjust airflow temperature based on the remote's location, maintaining consistent comfort throughout the room. Additionally, Dry Mode helps reduce humidity by acting as a dehumidifier, removing excess condensation. Backed by an industry-leading warranty—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—the 5th Generation MRCOOL® DIY® 9K BTU Ductless Heat Pump Single Zone Mini-Split Air Handler is built for lasting reliability. Enjoy advanced technology, simple installation, and year-round comfort with confidence. |
FEATURE LIST |
|
TONNAGE |
0.75 |
VOLTAGE (V) |
115 |
PHASE |
1 |
CYCLE |
60 |
MAX FUSE BREAKER (A) |
15 |
MIN CIRCUIT AMPACITY (A) |
3 |
MOUNT TYPE |
Wall |
COLOR |
White |
MAX COVERAGE AREA |
400 sqft |
DECIBEL RATING LOW (DBA) |
18 |
DECIBEL RATING HIGH (DBA) |
43 |
NUMBER OF SPEEDS |
5 |
OSCILLATION |
Yes |
LIQUID LINE SIZE |
1/4 |
SUCTION LINE SIZE |
3/8 |
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 |
ENERGY STAR CERTIFIED |
Yes |
AHRI CERTIFIED |
Yes |
REGISTERED WARRANTY |
Extended Limited Lifetime* |
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) |
7.44 |
NET HEIGHT (IN) |
11.69 |
NET WIDTH (IN) |
31.57 |
NET WEIGHT (LBS) |
24.91 |
GROSS DEPTH (IN) |
16.34 |
GROSS HEIGHT (IN) |
14.37 |
GROSS WIDTH (IN) |
36.02 |
GROSS WEIGHT (LBS) |
35.49 |
Install Manual |
Remote Manual |
Model Number:DIY-09-HP-C-115D25-O
BRAND NAME |
MRCOOL |
SERIES |
DIY 5th gen Single-Zone Mini-splits |
MODEL |
DIY-09-HP-C-115D25-O |
GTIN |
00840255586948 |
UPC |
840255586948 |
SHORT DESCRIPTION |
MRCOOL® 9k DIY 5th Generation Mini-Split Condenser 115v |
LONG DESCRIPTION |
Installing an HVAC system yourself might seem impossible, but the 5th Generation MRCOOL® DIY® 9k BTU 23.6 SEER Ductless Heat Pump Single Zone Mini-Split Condenser is designed for exactly that. With no special tools or experience required, this system can heat or cool spaces between up to 350 sq. ft. The pre-charged 25-foot QuickConnect® line set makes installation safe, simple, and cost-effective. Pre-filled with R-454B refrigerant, it eliminates the need for vacuuming. The included DIYPRO® cable replaces the need for electrical conduit, offering added durability against weather, animals, and yardwork tools. You can control the system using the included remote, the SmartHVAC app on Apple or Android devices, or voice commands via Amazon Alexa and Google Assistant. For coastal homes, the Gold Fin Condenser provides superior corrosion resistance, ensuring long-lasting performance. This system offers multiple modes and features to enhance comfort and efficiency. The Timer function helps reduce energy use, while Auto mode maintains your set temperature effortlessly. After a power outage, the system automatically restores previous settings. The anti-mildew function prevents mold by reducing excess condensation in the air handler. Backed by an industry-leading warranty, the 5th Generation MRCOOL® DIY® 9k BTU 23.6 SEER Ductless Heat Pump Single Zone Mini-Split Condenser now includes a limited lifetime warranty, along with a 7-year compressor and 5-year parts warranty. With innovative technology, easy installation, and reliable performance, this system is built to deliver comfort and peace of mind. |
FEATURE LIST |
|
SEER2 |
23.6 |
EER2 |
14 |
HSPF2-4 |
11.5 |
HSPF2-5 |
8.6 |
TONNAGE |
0.75 |
COOLING CAPACITY (BTU) |
9000 |
HEATING CAPACITY (BTU) |
10000 |
VOLTAGE (V) |
115 |
PHASE |
1 |
CYCLE |
60 |
MAX FUSE BREAKER (A) |
20 |
MIN CIRCUIT AMPACITY (A) |
18 |
COLOR |
White |
ZONE CAPACITY |
1 |
REFRIGERANT TYPE |
R-454B |
REFRIGERANT VOLUME (OZ) |
30.34 |
DECIBEL RATING (DBA) |
54 |
INVERTER |
DC |
LINE SET LENGTH |
25 |
MAX LINESET LENGTH (FT) |
82 |
LIQUID LINE SIZE |
1/4 |
SUCTION LINE SIZE |
3/8 |
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 |
ENERGY STAR CERTIFIED |
Yes |
AHRI CERTIFIED |
Yes |
REGISTERED WARRANTY |
Extended Limited Lifetime* |
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) |
11.93 |
NET HEIGHT (IN) |
21.85 |
NET WIDTH (IN) |
30.12 |
NET WEIGHT (LBS) |
83.11 |
GROSS DEPTH (IN) |
16.54 |
GROSS HEIGHT (IN) |
27.56 |
GROSS WIDTH (IN) |
36.22 |
GROSS WEIGHT (LBS) |
65.48 |
Certifications
ADD EXTRA 1/4"-1/2" INSTALLATION KITS?
-
MRCOOL DIY R-410A Charged Line Set 1/4"-1/2" Mini Split Quick-Connection for DIY 9K, 12K & 18K with Connection Wires (Select Size)
Regular price $205.00Sale price $205.00 Regular priceUnit price per$140.00
Line covers
-
12FT PVC Decorative Line Set Cover Kit for Ductless Mini Split Air Conditioners, Heat Pumps, and Inverters systems.
Regular price $73.00Sale price $73.00 Regular priceUnit price per -
16.5FT Brown PVC Decorative Line Set Cover Kit for Ductless Mini Split Air Conditioners, Heat Pumps, and Inverters systems.
Regular price $89.00Sale price $89.00 Regular priceUnit price per
Brackets and Concrete Pads
-
18"x40"x4" Plastic Equipment Mounting Pads – Lightweight, Durable Base for HVAC Units & Outdoor Installations
Regular price $69.00Sale price $69.00 Regular priceUnit price perSold out -
Heavy-Duty Mini Split Ground Stand with Load Capacity up to 500LBS, Condenser Bracket for 9000-36000 BTU Ductless Air Conditioners and Heat Pump, Inverter Systems
Regular price $129.99Sale price $129.99 Regular priceUnit price per -
Heavy-Duty Mini Split Ground Stand with Load Capacity up to 770LBS, Condenser Bracket for 9000-60000 BTU Ductless Air Conditioners and Heat Pumps, Inverter Systems
Regular price $169.99Sale price $169.99 Regular priceUnit price perSold out -
Heavy-Duty Mini Split Wall Bracket with Load Capacity up to 480LBS, Condenser Bracket for High BTU Ductless Air Conditioners and Heat Pump, Inverter Systems
Regular price $59.97Sale price $59.97 Regular priceUnit price per -
Mini Split Compressor Bracket for 6,000 - 28,000 BTU
Regular price $39.97Sale price $39.97 Regular priceUnit price per
We will prepare your order within 24 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
SMALLWARES INFORMATION: Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
Shipping & Delivery
We will prepare your order within 24–48 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map

IMPORTANT DELIVERY INFORMATION
Please be informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery.
To AVOID delays, please make sure the phone number in your order details is accurate and one where you can be reached. You may also contact the carrier directly using your tracking number to schedule your delivery.
It is your responsibility to ensure a safe and secure delivery environment. We are not liable for any packages that are stolen or lost after delivery is confirmed.
Please verify your shipping address carefully. Changes to your shipping address after the freight has been shipped may result in additional fees of 15% or more, depending on freight weight and dimensions.
SMALLWARES INFORMATION
Smaller items such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves may be shipped via FedEx without a signature requirement if ordered individually.
It is your responsibility to ensure a safe delivery location. We are not liable for packages lost or stolen after delivery confirmation. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING
Please inspect your boxes carefully upon delivery. Shipments should arrive shrink-wrapped and on a pallet. If you notice any damage or signs of mishandling (such as a crushed box or forklift puncture), write comments on the delivery receipt before signing, even if the damage appears minor.
Contact us immediately if any issues arise so we can assist you promptly.
SMS Delivery Notifications
If you opted into SMS notifications, we may send you order updates or delivery reminders by text message. Message frequency may vary. Message and data rates may apply. Text STOP to opt out. Text HELP for assistance.
For more details, see our Privacy Policy.
Cooper & Hunter
DETAILED PRODUCT BOOKLETS FOR THIS PRODUCT:
Olivia Series Booklet
Multi-Zone Booklet
Specification Table
Quick-Start Guide
Installation Manual
General Manufacturing Information
Rebates




