Mexref R‑407C

Description

Mexref R‑407C blends R‑32, R‑125, and R‑134a to closely mimic R‑22’s pressure-temperature characteristics, making it ideal for retrofitting in existing HVAC systems. It provides a transition path away from ozone-depleting refrigerants without major component changes.

Key Features:

• Zero ODP, ASHRAE A1 safety

• Similar pressures and cooling profile to R‑22

• Retrofits with minimal hardware changes

• Approved by many OEMs for system upgrades

Specifications:

• Composition: R‑32 (23%), R‑125 (25%), R‑134a (52%)

• Boiling point: ~–43.6 °C

• GWP: ~1774

• ODP: 0

• Lubricant: POE

Applications:

• Packaging: ~11 kg, 60 kg cylinders

• esidential and commercial HVAC retrofits

• Packaged rooftop units and VRF installations

• Heat pump systems

Usage:

• Evacuate and convert from R‑22 before charging

• Charge in liquid form to ensure blend consistency

• Use POE oil and compatible expansion devices

FAQs:

1. Is R‑407C a drop‑in for R‑22?
   It mimics performance but requires system retrofit—oil change and expansion device adjustments.

2. Why prefer R‑407C over R‑410A for retrofits?
   It matches R‑22 system pressures, making it simpler to retrofit than higher-pressure R‑410A.

3. How sensitive is system glide?
   As a zeotropic blend, there’s temperature glide—charging methods must account for it to maintain efficiency.