MRCOOL DIY Mini Split Systems
MRCOOL DIY 4th and 5th Generation heat pump mini splits: complete systems from 9k to 36k BTU, wall mount and ceiling cassette air handlers, single-zone condensers and 2-zone and 3-zone condensers. Match the generation, capacity and voltage to your setup.
Browse all mini splits, or find MRCOOL mini split accessories such as line sets.
MRCOOL DIY mini split guide: generation, parts and installation ▾
Complete system or individual parts?
A complete system listing includes the indoor and outdoor units together, such as the 5th Generation DIY-24-HP-WM-230D25-O. The other listings are single components: wall mount air handlers (WMAH), ceiling cassette air handlers (DIYCASSETTE), single-zone condensers, and the 4th Generation 2-zone (DIY-MULTI2-18HP230C) and 3-zone (DIY-MULTI3-27HP230C) condensers for multi-room setups.
Match generation, capacity and voltage
Each title gives the generation (4th or 5th) and the capacity; the voltage is in the title or in the model code (115 or 230, as in DIY-09-HP-WM-115D25-O and DIY-24-HP-WM-230D25-O). The 5th Generation systems and cassettes use R-454B refrigerant. When adding an air handler to a condenser, keep the generation and model family the same and check the pairing in MRCOOL's documentation.
Sizing and installation
Size by the room or area you want to heat and cool; a load calculation by an HVAC professional gives the most accurate answer. Follow MRCOOL's installation manual, check your local codes, and have a licensed electrician run the dedicated circuit and wiring.
