About the SRC35ZSX-W
The Mitsubishi Heavy Industries SRC35ZSX-W is the high-performance outdoor component of the premium Diamond Inverter series. As the engine of the split system, this unit is engineered to deliver exceptional cooling and heating for residential properties and light commercial spaces across the UK. It combines advanced Japanese engineering with a focus on energy efficiency, quiet operation, and installation flexibility, making it an ideal choice for discerning property owners seeking reliable, year-round climate control.
At its core, the SRC35ZSX-W provides a nominal cooling capacity of 3.5kW and a robust heating capacity of 4.3kW, ensuring comfortable indoor temperatures even during the extremes of British weather. The "Inverter" technology is key to its performance; it allows the compressor to intelligently adjust its speed in response to the room's temperature demands. Unlike traditional fixed-speed units that switch on and off, the inverter-driven system runs continuously at varying power levels, resulting in more stable temperatures, faster cooling or heating, and significantly lower energy consumption. This translates directly to reduced electricity bills and a smaller carbon footprint.
This unit boasts an impressive Energy Efficiency Ratio (EER) of 4.73 in cooling mode. When paired with a compatible Diamond series indoor unit, the complete system is capable of achieving the highest seasonal efficiency ratings, often denoted as A+++. This top-tier efficiency is not just an indicator of performance but a commitment to sustainable operation. For a homeowner, this means enjoying powerful air conditioning without the worry of excessive running costs. For a business, it represents a smart investment that contributes to lower operational overheads and helps meet corporate environmental targets.
The SRC35ZSX-W utilises R32 refrigerant, the modern standard for air conditioning systems. R32 is a significant step forward from older refrigerants like R410A. Its Global Warming Potential (GWP) is approximately one-third that of its predecessor, meaning it has a much lower impact on the environment if accidentally released. Furthermore, R32's superior thermodynamic properties allow it to convey heat more effectively, which contributes to the system's overall high energy efficiency and requires less refrigerant volume, further enhancing its green credentials.
Mitsubishi Heavy Industries understands that an outdoor unit should perform powerfully without being obtrusive. The SRC35ZSX-W features a modern, compact, and aesthetically pleasing design intended to blend seamlessly with a building's exterior. Its clean lines and neutral colour scheme ensure it does not detract from the property's appearance. More importantly, it is engineered for quiet operation. With a sound pressure level of just 48 dB(A) during cooling and 47 dB(A) in heating, its presence is auditory minimal, making it perfectly suited for residential neighbourhoods, office balconies, or outdoor seating areas where low noise is paramount.
The design of the SRC35ZSX-W provides installers with significant flexibility, accommodating a wide range of property layouts. The unit supports a maximum total piping length of up to 25 metres between it and the indoor unit. It also allows for a substantial vertical height difference of 15 metres, whether the outdoor unit is positioned above or below the indoor unit. This versatility means it can be conveniently located on a flat roof, at ground level in a garden, or on a wall bracket, far from the conditioned space, without compromising performance. The system comes pre-charged with refrigerant for pipe runs up to 15 metres, simplifying the installation process.
Please note that the SRC35ZSX-W is a component of a stationary refrigeration system. In compliance with UK regulations, it is a legal requirement that the installation, commissioning, and any maintenance involving refrigerant handling must be performed by an F-Gas certified engineer. Employing a qualified professional not only ensures the system is fitted safely and operates at peak efficiency but is also essential for validating the manufacturer's warranty. This ensures your investment is protected and your system provides reliable service for years to come.
In summary, the Mitsubishi Heavy Industries SRC35ZSX-W outdoor unit is the foundation of a world-class air conditioning system. It offers a powerful combination of efficient performance, advanced inverter technology, quiet operation, and eco-conscious design. As part of the prestigious Diamond series, it is built for longevity and reliability, providing an effective climate control solution for homes, offices, and small businesses throughout the year.
Applications
- Home bedrooms and living areas
- Small to medium-sized office spaces
- Retail shops and boutiques
- Restaurants, cafes, and bars
- Home offices and garden rooms
- Doctor's surgeries and waiting areas
Installation guidance
- Must be installed by an F-Gas certified engineer for legal compliance and warranty validation.
- Requires connection to a compatible Mitsubishi Heavy Industries indoor unit to function.
- Suitable for wall-mounting, roof-mounting, or ground-mounting on a solid, level base.
- Requires a dedicated 220-240V/1ph/50Hz power supply, typically protected by a 16A MCB.
- Supports a maximum total pipe run of 25 metres between the indoor and outdoor units.
- Allows for a maximum vertical height difference of 15 metres.
- The unit is pre-charged with R32 refrigerant for pipe lengths up to 15 metres.
- Pipe runs longer than 15 metres require an additional 20 grams of R32 refrigerant per metre.
Frequently asked questions
Is this a complete air conditioning system?
No, the SRC35ZSX-W is the outdoor unit only. It must be paired with a compatible Mitsubishi Heavy Industries indoor unit (e.g., from the SRK-ZSX Diamond series) to form a complete split system.
What is R32 refrigerant?
R32 is a modern refrigerant with a significantly lower Global Warming Potential (GWP) than older refrigerants like R410A. It is also more energy-efficient, helping to reduce electricity consumption and environmental impact.
How noisy is this outdoor unit?
The unit is designed for quiet operation, with a sound pressure level of 48 dB(A) during cooling and 47 dB(A) during heating. This is comparable to the sound level in a quiet library or a peaceful suburban area.
Do I need a professional to install this unit?
Yes, absolutely. UK law requires that any stationary air conditioning equipment be installed and commissioned by a fully qualified, F-Gas certified engineer. This is also mandatory to validate the manufacturer's warranty.
