2.5 kWMitsubishi Electric MSZ-AP 2.5kW Split System
The 2.5kW Mitsubishi Electric MSZ-AP Split (model MSZ-AP25VGKD2) is sized for standard bedrooms and small home offices. As a guide, it cools a room of up to about 18 to 21 m². That is from Mitsubishi Heavy Industries' sizing chart for an insulated room: the larger figure if it faces north, the smaller if it faces east. Western sun, poor insulation and high ceilings bring it down. It is the smallest capacity in the Mitsubishi Electric MSZ-AP Split range. If the space is bigger, has high ceilings or strong afternoon sun, step up to the 3.5kW.
Part of the Mitsubishi Electric MSZ-AP Split range, Mitsubishi Electric's split system line, in 7 sizes. Running costs below use the Sydney median rate; the Eastern Suburbs and Western Sydney pages cost systems on their own network tariffs. Check the size against your rooms, compare it with other 2.5 kW options, see every 2.5kW split system ranked by running cost, or ask about supply and installation.
About $157 a year at the current Sydney median electricity rate: $45 of cooling plus $112 of heating, from the official GEMS test figures.
The Mitsubishi Electric MSZ-AP 2.5kW uses 142 kWh per year for cooling and 351 kWh per year for heating under GEMS test conditions for Sydney's climate zone. The system holds a 5.5-star energy rating for cooling and 3-star rating for heating. With a rated cooling efficiency (AEER) of 4.97 and heating efficiency (ACOP) of 4.75, it converts incoming power into conditioned air at these measured levels.
Your actual running costs depend on usage patterns and current Sydney electricity rates. The official annual energy figures above provide a reliable basis for calculating typical annual operating expenses for this system size and efficiency rating in the Sydney climate zone.
Source: Australian GEMS registry · median of 170 Sydney residential tariffs, including GST · Refreshed monthly · Last updated September 2026
Specifications
From the manufacturer’s published range data. We confirm the exact configuration when we quote.
About the Mitsubishi Electric MSZ-AP Split range| Brand | Mitsubishi Electric |
|---|---|
| Model | MSZ-AP25VGKD2 |
| Series | Mitsubishi Electric MSZ-AP Split |
| System type | Split System |
| Capacity | 2.5 kW |
| Refrigerant | R32 |
| Outdoor units | MUZ-AP25 to MUZ-AP71 VGD2 |
| Warranty | 5 year parts & labour |
Mitsubishi Electric MSZ-AP 2.5kW: your questions
How much does a 2.5kW split system cost installed?
The unit is only part of the cost. Installed price depends on whether it is a straightforward back to back installation or needs longer pipe runs, wall brackets or a condenser slab, plus any electrical work at the switchboard. You get a fixed price in writing before any work starts. Photos of the wall, the outdoor spot and your switchboard help us price the job, and if it needs a look first, we book a site visit.
What size room does a 2.5kW air conditioner suit?
A 2.5kW split system cools a room of up to about 18 to 21 square metres as a guide. That is from Mitsubishi Heavy Industries' sizing chart for an insulated room: the larger figure if it faces north, the smaller if it faces east. Strong afternoon sun, high ceilings or big glass areas push you toward the next size up, and oversizing wastes money on short cycling. The capacity calculator sizes your room in under a minute, and we confirm before we quote.
How much does the Mitsubishi Electric MSZ-AP 2.5kW cost to run?
Official government test figures for Sydney's climate zone put the Mitsubishi Electric MSZ-AP 2.5kW at 142 kWh a year for cooling and 351 kWh for heating. The running cost figures on this page turn that into dollars at the Sydney median electricity rate, refreshed monthly. Your bill depends on your tariff and how much you run it.
Is the Mitsubishi Electric MSZ-AP 2.5kW reverse cycle?
Yes. The registered model (MSZ-AP25VGKD2) heats and cools, so one system covers Sydney summers and winters. Its official heating figures for this climate zone are shown in the energy section above.
