The MRCOOL DIY 9K BTU 23.6 SEER2 5th Gen Ductless Mini Split Heat Pump System is the small-room specialist of the DIY 5th Gen family: 9,000 BTU of cooling and 10,000 BTU of heating for spaces up to 400 square feet, running on ordinary 115V power. It also happens to post the best efficiency numbers in the entire single-zone lineup.
If you have never installed HVAC equipment before, this is the system to learn on. The 25-foot Quick Connect line set arrives pre-charged with R-454B, so there is no vacuum pump, no gauges, and no special tools or refrigerant certification. Most homeowners have it mounted and connected in an afternoon.
Ideal Spaces
- Bedrooms and nurseries
- Home offices
- Sunrooms and small dens
- Bonus rooms and she-sheds
Sized for rooms up to 400 square feet with normal insulation. A space that bakes in the sun or bleeds heat through single-pane windows behaves like a larger room, and the 12K system is the right answer there.
Features
- Lineup-leading efficiency. 23.6 SEER2 and 14 EER2 top every DIY 5th Gen single-zone system, with an 11.5 HSPF2 heating rating and Energy Star certification.
- Sleep-friendly sound. The wall unit runs from 18 to 43 dBA, and the condenser holds 54 dBA outside.
- Plug-simple power. 115V household voltage on a dedicated circuit; no 230V wiring project required.
- Control from anywhere. Included remote, SmartHVAC app on iOS and Android, Amazon Alexa, and Google Assistant.
- Follow Me function. Comfort tracks the remote, so the system conditions where you actually are.
- Washable filter and Gold Fin coil. Zero-cost filter maintenance inside, corrosion protection outside, plus Dry Mode for muggy days.
Key Specs
- Capacity: 9,000 BTU cooling, 10,000 BTU heating (0.75 ton)
- Efficiency: 23.6 SEER2, 14 EER2, 11.5 HSPF2
- Power: 115V single phase, 20A max breaker, 18A minimum circuit ampacity
- Coverage: spaces up to 400 square feet
- Refrigerant: R-454B, pre-charged 25 ft Quick Connect line set included (runs up to 82 ft supported)
- Line connections: 1/4 in liquid, 3/8 in suction
- Sound: 18 to 43 dBA indoors, 54 dBA outdoors
- Certifications: Energy Star, AHRI certified; UL and ETL listed
What's Included
-
1 x MRCOOL DIY 9K BTU 5th Gen Ductless Mini Split Condenser - 115V, DIY-09-HP-C-115D25-O -
1 x MRCOOL DIY 5th Generation Wall Mount Air Handler, 9,000 BTU, DIY-09-HP-WMAH-115D25-O -
1 x MRCOOL Lineset for DIY 5th Gen Mini Split Systems - R-454B, 25 ft pre-charged Quick Connect line set
What you should know
This is a complete system with nothing extra to buy: pre-charged condenser, wall-mounted air handler, and the 25-foot pre-charged Quick Connect line set are all in the shipment. Longer runs up to 82 feet are supported with an appropriate 5th Gen line set.
Even on 115V, plan a dedicated circuit with a breaker no larger than 20 amps and 18A minimum circuit ampacity; the condenser should not share power with room outlets. At about 65 pounds for the outdoor unit, this is the lightest and easiest system in the range to place.
Everything stays within the 5th Gen family: the R-454B charge and Quick Connect fittings will not pair with 3rd or 4th Gen equipment. One more sizing note: the 9K figure is cooling capacity, and heating is actually a touch higher at 10,000 BTU.
Warranty
- 7-year compressor warranty
- 5-year parts warranty
Specifications:
|
BRAND NAME |
MRCOOL |
|
SERIES |
DIY 5th gen Single-Zone Mini-splits |
|
CONDENSER MODEL |
DIY-09-HP-C-115D25-O |
|
AIR HANDLER MODEL |
DIY-09-HP-WMAH-115D25-O |
|
CONDENSER GTIN |
840255586948 |
|
AIR HANDLER GTIN |
840255586993 |
|
SEER2 |
23.6 |
|
EER2 |
14 |
|
HSPF2-4 |
11.5 |
|
HSPF2-5 |
8.6 |
|
TONNAGE |
0.75 |
|
COOLING CAPACITY (BTU) |
9,000 |
|
HEATING CAPACITY (BTU) |
10,000 |
|
VOLTAGE (V) |
115 |
|
PHASE |
1 |
|
CYCLE |
60 |
|
MAX FUSE BREAKER (A) |
20 |
|
MIN CIRCUIT AMPACITY (A) |
18 |
|
ZONE CAPACITY |
1 |
|
REFRIGERANT TYPE |
R-454B |
|
REFRIGERANT VOLUME (OZ) |
30.34 |
|
DECIBEL RATING (DBA) |
54 |
|
INVERTER |
DC |
|
LINE SET LENGTH |
25 ft |
|
MAX LINESET LENGTH (FT) |
82 ft |
|
LIQUID LINE SIZE |
1/4 in |
|
SUCTION LINE SIZE |
3/8 in |
|
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 |
|
AIR HANDLER MOUNT TYPE |
Wall |
|
MAX COVERAGE AREA |
400 sqft |
|
AIR HANDLER DECIBEL RATING LOW (DBA) |
18 |
|
AIR HANDLER DECIBEL RATING HIGH (DBA) |
43 |
|
OSCILLATION |
Yes |
|
FILTER TYPE |
Reusable |
|
REMOTE CONTROL INCLUDED |
Yes |
|
BASE PARTS WARRANTY |
5 years |
|
BASE COMPRESSOR WARRANTY |
7 years |
|
CONDENSER NET DIMENSIONS (D X H X W) |
11.93 x 21.85 x 30.12 in |
|
CONDENSER NET WEIGHT |
65.48 lb |
|
CONDENSER GROSS DIMENSIONS (D X H X W) |
16.54 x 27.56 x 36.22 in |
|
CONDENSER GROSS WEIGHT |
83.11 lb |
|
AIR HANDLER NET DIMENSIONS (D X H X W) |
7.44 x 11.69 x 31.57 in |
|
AIR HANDLER NET WEIGHT |
24.91 lb |
|
AIR HANDLER GROSS DIMENSIONS (D X H X W) |
16.34 x 14.37 x 36.02 in |
|
AIR HANDLER GROSS WEIGHT |
35.49 lb |
Product Documents:
Need help?
Call us at 1-800-514-2418 and our HVAC product specialists will answer your questions and help customize your MRCOOL DIY 9K system.
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Good AirX is an Authorized MRCOOL Dealer. Every unit ships new, factory-sealed, and fully covered by MRCOOL's manufacturer warranty.