MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz
SKU DIY-24-HP-WM-230C25
With Incentives
Save up to $1,47720.5 SEER2 meets CEE Tier 2 (≥16). Find your state's rebate
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Description
MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz
What's in This System
The actual units this bundle ships with — pictured individually, priced as one system.
Outdoor Condenser — included
MrCool DIY 4th Gen Single-Zone 24k Condenser 230V
Sold separately for $1,678
View this unit's full specs
Indoor Air Handler — included
MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Air Handler 208-230V/60Hz
Sold separately for $824
View this unit's full specs25 ft Quick Connect® Line Set
Pre-charged copper lines — in the box, no vacuum pump needed
DIYPro® Cable
Armored communication & power cable
Wireless Remote
Handheld remote with Follow Me sensing
Key Specifications
20.5
SEER2 Rating
23000BTU
Cooling Capacity
Up to 1000sq ft
Coverage Area
208-230V
Voltage
48.5/43.5/33dBA
Noise Level
MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 23,000 BTU
The MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz delivers 23,000 BTU of cooling and heating capacity (2-ton class), sized for spaces up to 1,000 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit handles medium primary rooms, master suites with attached bath, converted garages, and workshops. If your space includes a sunny west-facing wall or a finished bonus room above it, lean toward the upper end of the coverage range.
Efficiency & Operating Cost
This unit is rated at 20.5 SEER2 and 12.5 EER2 at full load. SEER2 measures seasonal cooling efficiency — higher is better — and 20.5 puts this in the premium efficiency tier. For heating performance it carries a 9.2 HSPF2 rating, which translates to roughly 300–350% heating efficiency versus resistance electric — one kilowatt-hour of electricity moves three kWh of heat into the space at mild outdoor temperatures. Running the unit 8 hours a day at full load draws roughly 269 kWh/month — about $43/month at the US average $0.16/kWh residential rate. Real-world draw is usually 30–50% lower because inverter compressors modulate down most of the time. ENERGY STAR certification makes this SKU eligible for federal tax credits (25C in 2026, up to 30% / $2,000 for qualifying heat pumps) and most state/utility rebate programs — check your state page for specific amounts.
Cold & Hot Weather Operating Range
This system produces rated heating capacity down to -1375°F ambient, putting it in hyper-heat territory suitable for northern climates where ducted gas is the usual backup. On the cooling side the compressor runs down to -13122°F outdoor ambient, useful for server rooms, grow rooms, and any space that needs year-round cooling. The inverter-driven compressor modulates between roughly 30% and 110% of rated capacity instead of cycling on/off, which both extends runtime at extreme temperatures and holds tighter setpoints (±0.5°F) versus ±2–3°F on fixed-speed units.
Power & Electrical Requirements
Power requirement: 208-230V 1-phase 60Hz (standard US residential 240V service). Minimum circuit ampacity is 22A with a maximum overcurrent protection of 35A. Wire the outdoor unit with 8 AWG copper on a dedicated 35A 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 4th Gen E STAR 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. The system supports line set lengths up to 75ft; longer runs are available as accessory kits. Plan the shortest practical route — every 10ft of line set adds roughly 2% capacity loss. Ships with R-410A refrigerant. R-410A is a mature, widely-serviced refrigerant; service technicians and parts are available at any HVAC supply house.
Sound Level & Comfort Features
Operating sound level ranges from 33 dB(A) on low to 48.5 dB(A) on high — the low end is whisper-quiet, below a normal conversation (60 dB) and comparable to a library reading room. Quiet mode caps fan speed and compressor rpm for an extra 2–3 dB drop in sound output.
Warranty & Certifications
When you register your unit within 60 days of purchase you get Limited Lifetime Compressor on the compressor through MrCool's registered warranty program. Unregistered coverage drops to 5-year Parts / 7-year Compressor — registration takes 3 minutes at mrcool.com and is the highest-ROI post-purchase step you can take. AHRI certified and UL/ETL listed for North American electrical safety — required for most utility rebate and tax credit programs.
What's in the Box & Compatibility
Ships as a Mini-Split with remote control included.
Product Details
The MRCOOL® 4th Generation DIY 24K BTU, 20.5 SEER Ductless Heat Pump is an all in one system that seamlessly combines efficiency, durability, and simplicity. This system can offer a 20.5 SEER efficiency rating that has allowed it to achieve an Energy Star certification and can heat & cool an area up to 1,000 sq. ft. It also features durable construction and a corrosion-resistant Gold Fin condenser. All of this is contained within a Do-It-Yourself system that can be installed by a homeowner in a few hours using simple tools. This simplicity is achieved with the use of the patented MrCool Pre-Charged Quick-Connect Line Set included with the system. Not only is this system capable of delivering exceptional performance, it is also equipped with up to six operating modes, which include AUTO, HEAT, COOL, FAN-ONLY, DRY (dehumidification), and SLEEP. The system’s Follow Me Feature allows the system to adjust the room temperature based on wherever you’re standing with the hand-held remote control. This system also has the ability to be controlled with a smartphone by way of the Smart HVAC app. Backed by a limited lifetime compressor warranty, this system is sure to meet your comfort needs and peace of mind.
Specifications
| Cooling Capacity | 23,000 BTU |
| Heating Capacity | 25,000 BTU |
| SEER2 Rating | 20.5 |
| HSPF2 | 9.2 |
| Voltage | 208-230 V |
| Refrigerant | R-410A |
| Noise Level | 48.5/43.5/33 dBA |
| Coverage Area | Up to 1000 sq ft |
| Zone Capacity | 1 zones |
| Max Line Set | 75 ft |
| SEER Rating | 20.5 |
| EER2 | 12.5 |
| Tonnage | 2 Ton |
| Airflow | 605.88/505.88/364.71 CFM |
| Phase | 1 |
| Refrigerant Type | R-410A |
| Refrigerant Charge | 81.13 oz |
| Liquid Line Size | 3/8 |
| Suction Line Size | 5/8 |
Features
- Up to 20.5 SEER2
- Gold Fin® condenser: corrosion-resistant coastal living - don't worry, our condenser is built to resist long term corrosion
- Variable-speed DC inverter compressor technology cuts operating costs
- R-410A environmentally friendly refrigerant
- Standard 7-year compressor/5-year parts warranty; register for limited lifetime compressor warranty
Frequently Asked Questions
Everything you need to know about this product
What size room will the MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz cool?
Can I install this myself without an HVAC license?
Is this unit eligible for the federal 25C tax credit?
How cold can it get outside before this heat pump stops heating?
What electrical circuit do I need for installation?
How fast does HVACZAR ship this unit?
What if it arrives damaged or I change my mind?
What is the warranty on the MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz?
How long does shipping take?
What size room does 23,000 BTU cover?
What is the efficiency rating?
Do you offer returns?
How can I pay?
Related Products
Ships Nationwide — Shop by State
We deliver the MRCOOL® E Star DIY 4th Gen 24k BTU Ductless Mini-Split Heat Pump Complete System 208-230V/60Hz to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.