Product overview
Mitsubishi WX-Series 24K BTU Single-Zone Ductless Mini Split Heat Pump
Value-focused Mitsubishi comfort for one dedicated space. This WX-Series ductless mini split pairs the MUZ-WX24NL outdoor heat pump with the MSZ-WX24NL wall-mounted indoor unit for efficient heating and cooling without adding ductwork.
With 22,400 BTU of rated cooling, 26,000 BTU of rated heating, and 18.0 SEER2 efficiency, this system is a strong fit for large rooms, open living spaces, finished basements, additions, and high-load spaces where a dedicated comfort zone makes more sense than extending central ductwork.
Not sure if 24K is the right size? Confirm your room load, insulation, sun exposure, and installation plan before ordering so the system is matched correctly to the space.
At a Glance:
| Best For | One-zone heating and cooling with a wall-mounted indoor unit |
| System Models | MUZ-WX24NL outdoor unit + MSZ-WX24NL indoor unit |
| Capacity | 22,400 BTU cooling / 26,000 BTU heating |
| Efficiency | 18.0 SEER2 / 8.0 EER2 / 8.5 HSPF2 |
| Voltage | 208/230V, 1 phase |
| Refrigerant | R-454B |
| Installation Type | Professional HVAC installation recommended |
Why Choose This Mitsubishi WX System?
- Entry-level Mitsubishi option: A practical choice for homeowners who want Mitsubishi single-zone comfort with a simpler 18 SEER2 equipment tier.
- Dedicated room comfort: Heat and cool one room or area without tying that space to a central duct system.
- Efficient inverter performance: Mitsubishi inverter technology adjusts output as conditions change, helping maintain steadier comfort than basic on/off systems.
- Year-round heat pump operation: Provides both air conditioning and heating from the same system.
- Quiet wall-mounted design: The indoor unit mounts high on the wall to distribute air through the room while keeping floor space open.
- Modern R-454B refrigerant: Built for Mitsubishi's current R-454B equipment generation.
- Warranty confidence: Mitsubishi lists a 10-year parts and compressor limited warranty when eligible equipment is registered within 90 days, subject to warranty terms.
What Is Included?
- 1 Mitsubishi MUZ-WX24NL outdoor heat pump condenser
- 1 Mitsubishi MSZ-WX24NL wall-mounted indoor air handler
- Wireless remote control capability for the indoor unit
Before You Order:
- Have your installer confirm the room load and that a 24K system is appropriate for the space.
- Confirm line-set length, indoor and outdoor placement, condensate routing, electrical requirements, and local code requirements before purchase.
- This is not a DIY quick-connect system. Refrigerant piping, evacuation, electrical work, startup, and commissioning should be handled by a qualified HVAC professional.
- Line sets, wall brackets, disconnects, pads, electrical materials, and installation accessories may be sold separately unless specifically included.
Frequently Asked Questions:
What makes this different from the HX-Series?
The WX-Series is Mitsubishi's entry-level single-zone heat pump tier in this catalog, with 18.0 SEER2 ratings across these capacities. HX steps up to 20.0 SEER2.
Does this system heat and cool?
Yes. This is a heat pump system designed for both air conditioning and heating.
Is this a DIY system?
No. This Mitsubishi system should be installed by a qualified HVAC professional.
Does it use R-454B refrigerant?
Yes. The MUZ-WX24NL / MSZ-WX24NL system is part of Mitsubishi's R-454B equipment lineup.
Specifications:
| BRAND NAME | Mitsubishi |
| SERIES | WX-Series |
| SYSTEM TYPE | Ductless mini split heat pump |
| OUTDOOR MODEL | MUZ-WX24NL |
| INDOOR MODEL | MSZ-WX24NL |
| ZONE CAPACITY | 1 zone |
| COOLING CAPACITY | 22,400 BTU |
| HEATING CAPACITY | 26,000 BTU |
| AHRI CERTIFICATE NUMBER | 215862735 |
| SEER2 | 18.0 |
| EER2 | 8.0 |
| HSPF2 | 8.5 |
| REFRIGERANT TYPE | R-454B |
| POWER SUPPLY | 208/230V, 1 phase |
| MAX OVERCURRENT PROTECTION | 29 A |
| LINE SET SIZE | 1/4 in liquid / 1/2 in gas |
| OUTDOOR DIMENSIONS | 31 in W x 28 in H x 11 in D |
| INDOOR DIMENSIONS | 36 in W x 12 in H x 10 in D |
| REGISTERED WARRANTY | 10-year parts and compressor limited warranty when registered within 90 days; terms apply |
| NON-REGISTERED WARRANTY | 5-year parts / 7-year compressor limited warranty; terms apply |
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
| System capacity | 24000 BTU |
|---|---|
| Efficiency | 18 SEER2 |
| Power | 230 Volt |
| Brand | Mitsubishi |
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.
