Product overview
MRCOOL DIY 5TH Gen Multi-Zone 6-Zones 55k BTU 22 SEER Ductless Mini-Split Air Conditioner and Heat Pump (12K + 12K + 12k + 12K + 12K + 12K)
Upgrade your home’s climate control with the MRCOOL DIY 5th Gen 55K BTU 6-Zone Ductless Mini-Split System, expertly configured with six 12K wall-mounted air handlers. This powerful combo is ideal for homes with a mix of small and larger rooms—providing precision temperature control across six zones without sacrificing efficiency or ease of use.
The system features MRCOOL’s DIY Quick Connect® technology, pre-charged lines, and smart-home integration, making it the go-to solution for confident homeowners who want professional-grade HVAC performance without professional installation. Built for flexibility, durability, and energy savings, this 5th Gen model is SEER2 rated up to 20.5 and comes loaded with features like Gold Fin® corrosion resistance, Wi-Fi controls, and low ambient heating/cooling.
Key Features:
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(1) 55,000 BTU 5th Gen DIY Multi-Zone Condenser (supports up to 6 zones)
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(6) 12K BTU DIY Wall Mount Air Handlers
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SEER2 Rating: Up to 20.5
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Smart HVAC Control – Compatible with MRCOOL app, Alexa & Google Assistant
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DIY Installation – Pre-charged lines, no vacuuming or special tools needed
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Gold Fin® Coating – Rust-resistant, ideal for coastal or humid areas
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Advanced features: Auto Restart, Leak Detection, Sleep Mode, Follow Me®
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UL Listed & AHRI Certified
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Backed by 5-Year Parts and 7-Year Compressor Warranty
Includes:
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(1) MRCOOL 55K BTU 5-Zone DIY Condenser (Model: DIY-MULTI5-55HP-WM00C)
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(4) 6K, (1) 12K, and (1) 18K DIY Wall Mounted Air Handlers
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(6) Remotes
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Installation Manuals
Brochure & Guides:
Specifications:
| BRAND NAME | MRCOOL |
| SERIES | DIY 5th gen Multi-Zone Mini-splits |
| MODEL | DIY-MULTI6-55HP230D-O |
| GTIN | 840255587488 |
| UPC | 840255587488 |
| SHORT DESCRIPTION |
MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v
|
| SEER2 | 22 |
| EER2 | 12 |
| HSPF2-4 | 10.6 |
| HSPF2-5 | 8.5 |
| TONNAGE | 4.6 |
| COOLING CAPACITY (BTU) | 47000 |
| HEATING CAPACITY (BTU) | 55000 |
| VOLTAGE (V) | 208/230 |
| PHASE | 1 |
| CYCLE | 60 |
| MAX FUSE BREAKER (A) | 45 |
| MIN CIRCUIT AMPACITY (A) | 43 |
| COLOR | White |
| ZONE CAPACITY | 6 |
| REFRIGERANT TYPE | R-454B |
| REFRIGERANT VOLUME (OZ) | 151.68 |
| DECIBEL RATING (DBA) | 64 |
| INVERTER | DC |
| LINE SET LENGTH | 25 |
| MAX LINESET LENGTH (FT) | 221.4 |
| LIQUID LINE SIZE | 1/4 |
| SUCTION LINE SIZE | (3/8 X4) (1/2 X2) |
| 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) | 16.34 |
| NET HEIGHT (IN) | 52.48 |
| NET WIDTH (IN) | 37.48 |
| NET WEIGHT (LBS) | 245.81 |
| GROSS DEPTH (IN) | 19.49 |
| GROSS HEIGHT (IN) | 58.27 |
| GROSS WIDTH (IN) | 43.11 |
| GROSS WEIGHT (LBS) | 267.46 |
In-stock systems ship fast and free with curbside freight delivery, typically arriving in 4–10 days. Please inspect each box at delivery and note any damage on the receipt before signing — it keeps any freight claim quick and simple.
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At a glance
Tech specs
| Condenser capacity | 55,000 |
|---|---|
| Indoor unit(s) | 12K + 12K + 12K + 12K + 12K + 12K |
| Coverage area | 2,300 Sq Ft. |
| Zones / rooms | 6 Zones |
| Efficiency | 22 SEER2 · ENERGY STAR certified |
| Power | 230 Volt |
| Line set | Custom |
| Mount type | Wall |
| Installation | DIY Installation |
| Brand | MRCOOL |
Sizing in doubt? Our HVAC experts confirm capacity for your rooms before you order — free. Ask us about utility rebates for high-efficiency heat pumps in your area.
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Every step, start to finish — most homeowners wrap a single zone in a weekend.
