MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v
Component — Not a Complete System
This is the outdoor unit only. To run, you also need a matching indoor air handler and a refrigerant line set. Looking for the complete system instead? Browse complete 47,000 BTU systems.
SKU DIY-MULTI6-55HP230D-O
With Incentives
Save up to $2,19622 SEER2 meets CEE Tier 2 (≥16). Find your state's rebate
MrCool DIY factory warranty — register after install to activate the full coverage tiers.
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Description
MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v
What's in the Box
Here's what you'll receive with your order
MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Spl...
As described
Key Specifications
22
SEER2 Rating
47000BTU
Cooling Capacity
208/230V
Voltage
64dBA
Noise Level
6
Zone Capacity
MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 47,000 BTU
The MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v delivers 47,000 BTU of cooling and heating capacity (4.6-ton class), sized for spaces up to 2,000 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit is typically used for open-plan main floors, large garages, pole barns, finished basements, and small commercial bays. For homes with vaulted ceilings, heavy sun exposure, or poor insulation, plan on ~20% more BTU per square foot than the nominal coverage. As a multi-zone system this condenser supports up to 6 independent indoor heads, each with its own thermostat and mode — so bedrooms can cool while the living room heats, on one outdoor unit.
Efficiency & Operating Cost
This unit is rated at 22 SEER2 and 12 EER2 at full load. SEER2 measures seasonal cooling efficiency — higher is better — and 22 puts this in the premium efficiency tier. For heating performance it carries a 10.6 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 513 kWh/month — about $82/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.
Power & Electrical Requirements
Power requirement: 208/230V 1-phase 60Hz (standard US residential 240V service). Minimum circuit ampacity is 43A with a maximum overcurrent protection of 45A. Wire the outdoor unit with 6 AWG copper on a dedicated 45A 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 Multi-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. The system supports line set lengths up to 221.4ft; 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-454B refrigerant. R-454B is the EPA 2025-compliant low-GWP replacement for R-410A, required for new-manufacture equipment — lower global-warming footprint without an efficiency penalty.
Sound Level & Comfort Features
Rated sound output is 64 dB(A) at full operation. 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
Our new 5th Generation MRCOOL® DIY® 55k BTU Multi-Zone Ductless Mini-Split Condenser is one of the most efficient and innovative units in the industry, and we’re excited to finally share it with you! On top of saving time and money because you won’t need an HVAC professional, this system will give you a good sense of accomplishment because you’ll have installed it yourself! The whole family will be able to enjoy the comfort of this condenser, because it can heat and cool up to 6 different spaces that equal up to 2290 sq. ft., giving you the ability to heat and cool an entire home to your exact specifications using a single MRCOOL® system. The system’s patented pre-charged Quick-Connect® line sets essentially fast-forward the installation of this system, enabling you to skip the evacuation and charging steps and simplifying the entire process. We utilize new R-454B refrigerant in these line sets, which is a much more environmentally friendly and efficient choice. Features like these assist this unit in achieving its impressive SEER2 of 22, and its HSPF2-4 of 10.6, both of which signify that this system will help you save money throughout the entire time you use it. These line sets are sold separately. Once you install this condenser, you’ll be met with a variety of features to help you control your comfort. One of these features is the Smart HVAC app, available on Apple and Android, that allows you to operate your system from the convenience of your phone. Set schedules, manage different modes, monitor energy consumption, and more all without having to leave the couch! You can also set up voice control through Amazon Alexa or Google Home, meaning you can control your comfort without moving a finger. This system ensures you’ll be enjoying ultimate convenience and superior comfort. The warranty for this unit is one of the best in the industry, and we’re proud to have your back. You can enjoy the peace of mind of a 5 year parts warranty, a 7 year compressor warranty, and, once you enroll in the MRCOOL® Care Program, a Limited Lifetime Replacement warranty. If you need perfect comfort but don’t want to break the bank, this MRCOOL® DIY® condenser is your answer!
Specifications
| Cooling Capacity | 47,000 BTU |
| Heating Capacity | 55,000 BTU |
| SEER2 Rating | 22 |
| HSPF2 | 10.6 |
| Voltage | 208/230 V |
| Refrigerant | R-454B |
| Noise Level | 64 dBA |
| Zone Capacity | 6 zones |
| Max Line Set | 221.4 ft |
| EER2 | 12 |
| Tonnage | 4.6 Ton |
| Phase | 1 |
| Refrigerant Type | R-454B |
| Refrigerant Charge | 151.68 oz |
| Liquid Line Size | 1/4 |
| Suction Line Size | (3/8 X4) (1/2 X2) |
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
What size room will the MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v cool?
Can I install this myself without an HVAC license?
Is this unit eligible for the federal 25C tax credit?
What electrical circuit do I need for installation?
Can I add more indoor units later on this condenser?
How fast does HVACZAR ship this unit?
What if it arrives damaged or I change my mind?
What is the warranty on the MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v?
How long does shipping take?
What size room does 47,000 BTU cover?
What is the efficiency rating?
Do you offer returns?
How can I pay?
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Ships Nationwide — Shop by State
We deliver the MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.