MRCOOL® 9k DIY 5th Generation Mini-split Air Handler 115v
Component — Not a Complete System
This is the indoor unit only. To run, you also need a matching outdoor condenser and a refrigerant line set. Looking for the complete system instead? Browse complete systems.
SKU DIY-09-HP-WMAH-115D25-O
With Incentives
Save up to $4475th Generation system — meets CEE Tier 2 efficiency. Find your state's rebate
Customize it — compatible add-ons only
Diameter matched to this unit per MrCool's spec sheet.
Clean channel for the lines running down your exterior wall.
Universally compatible tools and care items — maintenance kit, coil cleaner, install tools.
MrCool DIY factory warranty — register after install to activate the full coverage tiers.
Sizing Help
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Resources
Brochures & Manuals
Description
MRCOOL® 9k DIY 5th Generation Mini-split Air Handler 115v
What's in the Box
Here's what you'll receive with your order
Wall-Mount Air Handler
Indoor ductless mini-split unit
Wireless Remote Control
Handheld remote with temperature control
Mounting Plate & Hardware
Wall mounting bracket and screws
Owner Manual
Installation and operation guide
Key Specifications
400sq ft
Coverage Area
115V
Voltage
MRCOOL® 9k DIY 5th Generation Mini-split Air Handler 115v — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Power & Electrical Requirements
Power requirement: 115V 1-phase 60Hz (standard US 120V household outlet). Minimum circuit ampacity is 3A with a maximum overcurrent protection of 15A. Wire the outdoor unit with 14 AWG copper on a dedicated 15A double-pole breaker (or single-pole at 120V), with a disconnect within sight of the condenser per NEC 440.14.
Install Difficulty — DIY-Friendly
This DIY 5th gen Single-Zone Mini-splits system ships with a pre-charged Quick Connect line set — no HVAC license, no vacuum pump, no refrigerant gauges. The pre-charged fittings use a hand-tightened mechanical seal that a homeowner completes in 15 minutes per connection. Typical install time from unboxing to first cool air is 4–8 hours for a single-head system.
Sound Level & Comfort Features
Operating sound level ranges from 18 dB(A) on low to 43 dB(A) on high — the low end is whisper-quiet, below a normal conversation (60 dB) and comparable to a library reading room. The indoor blower offers 5 fan speeds plus auto mode, letting you trade airflow for quiet operation in bedrooms while running louder in living areas. Quiet mode caps fan speed and compressor rpm for an extra 2–3 dB drop in sound output.
Warranty & Certifications
Manufacturer warranty: 5 on parts, 7 on the compressor. AHRI certified and UL/ETL listed for North American electrical safety — required for most utility rebate and tax credit programs.
Product Details
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.
Specifications
| Voltage | 115 V |
| Coverage Area | 400 sqft sq ft |
| Tonnage | 0.75 Ton |
| Phase | 1 |
| Liquid Line Size | 1/4 |
| Suction Line Size | 3/8 |
Features
- Intertek listed 5031495
- Easy DIY installation
- Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
- Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
- The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
Frequently Asked Questions
Everything you need to know about this product
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Ships Nationwide — Shop by State
We deliver the MRCOOL® 9k DIY 5th Generation Mini-split Air Handler 115v to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.