Evacuation With Professional-Grade HVAC Tools from NAVAC

Any NAVAC Pump

NAVAC Vacuum Pumps - National HVAC Manufacturing Company

NMV1 Micron Vacuum Gauge

Big Boy Ø1/2″ Evacuation Hose(s)

Vacuum Hoses from NAVAC High Quality HVAC Tools

NVR1 Valve Core Removal Tool(s)

Valve Core Removal Tool - NAVAC HVAC Tools

For a faster evacuation, we must change the narrative

Commercial HVAC Tools - Schrader Cores

Should I pull the Schrader Cores?

Yes! For a faster evacuation,

  • Use a Schrader Core Removal Tool/s.
  • Pressure rated for R410A systems.
  • Vacuum rated to 20 microns.
Professional Grade HVAC Tools - What size hoses

What size hoses?

When talking about evacuation hoses:

  • Bigger is always Faster (only if Schrader Cores are removed).
  • Must be Vacuum Rated.
  • Constructed for Low Permeation.

Size vs. Flow (CFM per hose):

  • 1/4″ = ≤1 CFM
  • 3/8″ = 2-3 CFM
  • 1/2″ = 4-6 CFM
  • 5/8″ = 8-10 CFM
  • 3/4″ = 12-16 CFM
Vacuum Pumps - What Size Pumps?

What size pumps?

When talking about Vacuum Pumps, Bigger is not always Faster. Vacuum Pump performance will be limited by the following:

  • Not removing Schrader Cores.
  • The size of vacuum hose used.

Ultimate Micron Rating = Pump Efficiency

2 Stage Vacuum Pumps must be used for HVAC/R system evacuation.

  • Single stage pumps are incapable of achieving deep vacuum.