Product overview
MRCOOL DIY 5th Gen Multi-Zone 2-Zone 27,000 BTU 23 SEER2 (9K Wall Mount + 18K Ceiling Cassette) Ductless Mini-Split Air Conditioner and Heat Pump
Heat and cool 2 rooms with this mixed MRCOOL DIY 5th Gen multi-zone system. This bundle pairs 1 wall mounted air handler and 1 ceiling cassette air handler with a 27,000 BTU multi-zone condenser, giving customers the flexibility to use discreet ceiling cassette comfort in open living areas while keeping familiar wall mounted air handlers in bedrooms, offices, or secondary rooms.
The MRCOOL DIY system is designed for easier installation with compatible pre-charged Quick Connect line sets, R-454B refrigerant, app-based controls, and year-round heat pump performance. Ceiling cassettes install out of the way between standard joists, while wall mounted air handlers offer a straightforward, efficient solution for rooms where wall placement is preferred. Line sets are selected separately from the product options.
Looking for a different combination? Build your own system here.
Features:
- Mixed wall mount and ceiling cassette indoor unit bundle
- Easy DIY installation with compatible Quick Connect line sets
- Multi-room heating and cooling comfort
- Energy efficient DC inverter technology
- Gold Fin condenser coating
- Eco safe R-454B refrigerant
- Smartphone app control with Google Assistant and Amazon Alexa compatibility
- Quiet operation and Follow Me comfort control
- 7 year compressor warranty and 5 year parts warranty
Brochure & Guides:
Specifications:
| BRAND NAME | MRCOOL |
| SERIES | DIY 5th Gen Multi-Zone Mini-Splits |
| MODEL | DIY-MULTI4-27HP230D-O |
| SYSTEM CAPACITY | 27,000 BTU |
| INDOOR UNIT COMBINATION | 9K + 18K mixed wall mount and ceiling cassette air handlers |
| ZONE CAPACITY | 4 |
| VOLTAGE | 208/230V |
| REFRIGERANT TYPE | R-454B |
| LINE SETS | Sold separately through selectable options |
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.
Ask AI
Ask AI about this product
Ask our AI product assistant about sizing, compatibility, electrical needs, accessories, shipping, warranty, and install planning.
Complete Your System
See it done
Watch the full DIY install
Every step, start to finish — most homeowners wrap a single zone in a weekend.
