Features

low footprint icon v2 FitMaxWzkzMCwzMzZd

Utilises a lower GWP refrigerant, reducing environmental impact, supporting sustainability and helping achieve CSR targets

Click to see more
Low Running Costs

Provides powerful and efficient heating for consistent comfort and reduced energy costs, even at low ambient conditions

Click to see more
Tick icon

Integrated refrigeration sensor, providing early detection of leaks and enhancing occupant safety

Click to see more
infrared icon FitMaxWzkzMCwzMzZd

Built-in Wi-Fi interface for remote control & monitoring via the Mitsubishi Electric MELCloud app, delivering convenient system management

Click to see more

Product information sheet

MSZ-RZ R290 PI Sheet

View & Download

R290 Frequently Asked Questions

What is R290 refrigerant?

R290 is the refrigerant-grade version of propane, a hydrocarbon used in air conditioning and refrigeration systems. It is natural, non-toxic, and has low global warming potential (GWP) compared to traditional refrigerants like R410A or R32.

What are the benefits of using R290 in wall-mounted AC units?

The benefits of using R290 refrigerant in wall-mounted air conditioning systems:

  • Environmentally friendly (very low GWP, zero ODP)
  • High energy efficiency
  • Good thermodynamic performance
  • Lower operating pressure than some synthetic refrigerants

Is R290 more efficient than R410A or R32?

In many cases, yes. R290 can offer higher COP (coefficient of performance) and energy savings due to its excellent thermodynamic properties.

Will switching to R290 reduce my electricity bill?

Potentially, yes. Because of its higher efficiency, R290 systems often consume less electricity for the same cooling output.

Is R290 compliant with environmental regulations?

Yes. R290 has Zero ozone depletion potential (ODP) and a GWP of 0.02, making it fully compliant with F-Gas regulations and ideal for future-proof installations.

What sizes and capacities are available for the MSZ-RZ R290?

  • MSZ‑RZ25 –5 kW cooling / 3.2 kW heating
  • MSZ‑RZ35 –5 kW cooling / 4.0 kW heating

What safety measures are in place?

  • Leakage sensors
  • Unique to Mitsubishi Electric odorant detection
  • Strict design to comply with A3 classification standards

What efficiency performance does the MSZ-RZ offer?

  • Cooling SEER: Up to 11.7
  • Heating SCOP: Up to 5.3 (A+++ rating)

How quiet is the MSZ-RZ?

Indoor unit operates from as low as 19 dB(A) in both heating and cooling modes.

What built-in features enhance comfort and air quality?

  • Plasma Quad‑Plus filter: Neutralises viruses (including 99.8% of SARS‑CoV‑2), bacteria, allergens and PM2.5
  • 3D i-see sensor: Detects occupancy & temperature distribution to optimise airflow.
  • MELCloud Wi‑Fi: Built in for remote control and monitoring via app

What are the installation considerations?

R290 is flammable, so charge limits, ventilation, and strict compliance must be adhered to.

What service and maintenance protocols apply?

Certified technicians only should service the system—flammability makes DIY servicing unsafe.

Filters should be cleaned/replaced per manual guidelines; ensure regular leak detection is maintained.

Ideal for eco-conscious homeowners and smaller commercial applications wanting high-performance, low-GWP heating/cooling with smart capabilities. Make sure it's installed and serviced by qualified, certified (F-gas) professionals.