RNAIR LLC

04/05/2026

Preventive Maintenance

-Check amp draw of compressor
-Check amp draw of condenser motor
-Check amp draw of evaporator motor
-Check and clear primary & secondary condensate lines and pans
-Check belts and pulleys; adjust if necessary
-Check system operating pressures (refrigerant levels)
-Check thermostat operation
-General inspection of wiring in furnace and A/C units
-Clean condenser coil
-Clean evaporator coil (if accessible)
-Inspect filter; replace if customer provides a replacement filter
-Lubricate motors if oil ports are accessible
-Test temperature rise and drop of furnace, A/C, and heat pump

02/02/2026

12/21/2025

The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam engines, allow mechanical work to be extracted from a fluid as it moves between a heat source and heat sink. The Rankine cycle is named after William John Macquorn Rankine, a Scottish polymath professor at Glasgow University.

10/10/2025

4-ton Heat Pump Replacement with WiFi Control thermostat.

10/10/2025

Always running nitrogen to prevent internal oxidation.

10/10/2025

Brazing new compressor replacement.

10/10/2025

2.5 Ton, two stage compressor replaced. Always applying 5 psi of nitrogen when brazing to prevent internal oxidation.

12/01/2024

11/27/2024

Before & After

11/08/2024

2 Ton MultiSplit Heat Pump.

10/19/2024

Working on this!