About the SRF25ZS-W
The Mitsubishi Heavy Industries SRF25ZS-W is a premium floor-standing console indoor unit, delivering a sophisticated and powerful climate control solution for residential and light commercial spaces. This 2.5kW model is engineered for year-round comfort, providing efficient cooling in the summer and robust heating in the winter. Its elegant, semi-flat front panel in a stylish white finish allows it to blend seamlessly into a variety of interiors, from modern living rooms to classic bedrooms and home offices.
One of the standout features of the SRF25ZS-W is its exceptional design versatility. With a slim depth of just 238mm and a low height of 600mm, it is perfectly suited for installation in areas with limited space, such as on dwarf walls in conservatories, under windows, or in loft conversions. Beyond traditional floor-standing placement, it can also be wall-hung or even concealed behind gallery panels, offering unparalleled flexibility to suit any architectural requirement.
At the heart of its performance is Mitsubishi Heavy's advanced inverter technology and intelligent airflow management. The unit features a unique dual-outlet system that optimises air distribution based on the operating mode. In heating mode, it prioritises the lower outlet, directing warm air across the floor to counteract the natural tendency for heat to rise. This creates a comfortable, uniform warmth from the ground up. In cooling mode, it uses the upper outlet to gently circulate cool air, preventing uncomfortable cold draughts at floor level. The user-customisable 'Flap Control System' allows for precise adjustments to airflow direction, ensuring comfort in every corner of the room.
Environmental responsibility and operational efficiency are central to the SRF25ZS-W's design. It utilises R32 refrigerant, which has a significantly lower Global Warming Potential (GWP) than older refrigerants, reducing its environmental impact and ensuring compliance with modern regulations. This efficiency is reflected in its outstanding energy ratings of A++ for cooling (SEER 7.4) and A+ for heating (SCOP 4.0), translating to lower energy consumption and reduced running costs.
Air quality is another area where this unit excels. It comes equipped as standard with an Allergen Clear Filter, which captures and neutralises pollen, dust, and other allergens. This is complemented by Mitsubishi's innovative Natural Enzyme Filter, designed to destroy airborne fungi, bacteria, and viruses, while a Photo-catalytic Washable Deodorising Filter tackles unpleasant odours. Together, these systems create a healthier, cleaner, and fresher indoor environment for occupants.
Designed for residential living, the SRF25ZS-W operates at exceptionally low noise levels. In its ultra-low cooling mode, the sound pressure is a mere 25dB(A), which is quieter than a whisper, ensuring it won't disturb sleep or concentration. This is achieved through a multi-stage heat exchanger that allows for lower air velocity without compromising performance.
This product is the indoor unit only and requires connection to a compatible Mitsubishi Heavy Industries outdoor unit to function as a complete system. Control is managed via an included infrared remote controller, and for ultimate convenience, an optional Wi-Fi adapter can be added to enable control from a smartphone or tablet. For the installer, the unit is designed for ease of installation, with piping and drain hose connections possible from six different areas. It is a legal requirement in the UK for any system containing F-Gas refrigerants to be installed by an F-Gas certified engineer. This is essential for safety, regulatory compliance, and to validate the manufacturer's warranty.
Applications
- Conservatories and garden rooms
- Living rooms and lounges
- Bedrooms and home offices
- Loft conversions with low eaves
- Small retail shops or boutiques
- Hotel rooms and serviced apartments
Installation guidance
- This is an indoor unit and must be paired with a compatible MHI outdoor unit.
- Installation must be carried out by a qualified F-Gas certified engineer.
- Versatile mounting options: floor-standing, low-wall mounted, or concealed.
- Slim profile (238mm deep) is ideal for spaces with limited depth.
- Piping and drain connections are accessible from 6 different directions for flexibility.
- Requires 1/4" liquid and 3/8" gas pipe connections.
- Maximum piping length between indoor and outdoor units is 20 metres.
- Requires a 10A fused power supply.
Frequently asked questions
Is this a complete air conditioning system?
No, this product listing is for the SRF25ZS-W indoor unit only. To function, it must be installed with a compatible Mitsubishi Heavy Industries outdoor condenser unit.
What makes this unit a good choice for a conservatory?
Its low height (600mm) and slim design make it ideal for installation against the low dwarf walls typically found in conservatories. Its intelligent heating mode, which warms the floor first, is also highly effective at making the space comfortable year-round.
Can I control the SRF25ZS-W with my phone?
Yes, Wi-Fi control is possible with the addition of an optional Wi-Fi adapter (sold separately). This allows you to manage your air conditioning system remotely via a smart device.
How quiet is this air conditioner?
The SRF25ZS-W is designed for very quiet operation. Its sound level in the lowest fan setting (Ulo mode) for cooling is just 25 dB(A), which is comparable to a soft whisper, making it ideal for bedrooms and other quiet spaces.
