Manifold gauge set

What it is

The most accurate way to verify proper refrigerant charge is to measure subcooling and superheat using manifold gauges.

Lubricants used for R-22 systems and R-410A systems are not compatible. When upgrading systems be to R-410A be careful to purge systems thoroughly. Using manifold gauges that are dedicated for R-22 and R-410A use will help avoid contamination and will have pressure ranges that are appropriate to the refrigerant type.

Source: U.S. Department of Energy

Its parts

Related pages

• Glossary: Manifold gauge set

  Its entry, and the guide's pages that use it.

Sources

1. U.S. Department of Energy. Measure Guideline: Air Conditioner Diagnostics, Maintenance, and Replacement (DOE Building America).