R32 vs R410A Refrigerant: Which is Better?

The biggest decision when buying a new AC: does the inverter premium pay off? In most cases, yes. Here is the technical breakdown.

How non-inverter works

Classic (on/off) ACs have only two compressor states: full power or off. When the room hits target temperature, the compressor stops; when it rises, it restarts at 100%. Three problems result:

1. Energy waste: each restart draws 4-7× more energy briefly.
2. Temperature swing: set 22°C actually oscillates 19-25°C.
3. Mechanical wear: each full-power start shortens compressor life.

Inverter technology

Compressor speed varies smoothly from 10% to 100%. Benefits:

• 30-50% energy savings — no startup spikes
• ±0.5°C temperature precision
• 3-5 min to reach setpoint (vs 10-15 min)
• 2× longer compressor life
• 5-8 dB quieter

Price difference and ROI

Same-capacity inverter costs 20-30% more. Example: 9,000 BTU non-inverter 450 AZN + 480 AZN/yr electricity vs inverter 580 AZN + 280 AZN/yr. Annual savings 200 AZN, payback 7-8 months.

Mitsubishi Heavy Industries offers two main residential series: SRK-ZSP-W (Standard Inverter) and SRK-ZSX-W (Premium Diamond). Both are high-quality inverters, but optimised for different scenarios.

Technical comparison

Pick ZSP for

Living rooms, kitchens, offices. Budget-priority. Noise not critical.

Pick ZSX for

Bedrooms, nurseries, allergy/asthma sufferers, smart-home integrations, 5-year compressor warranty.