SPARTA, N.J. — Testo Inc. announced that it is now offering a $75 mail-in rebate when a new digital manifold and digital vacuum gauge are purchased. Through July 31, 2013, anyone who purchases new a Model 550, 557 or 570 Digital Manifold and a 552 Vacuum Gauge is eligible for a $75 rebate.

Testo has introduced the new 552 Digital Vacuum Gauge for the evacuation of heat pumps, air conditioning systems, and refrigeration systems. With the 552, the absolute pressure sensor needs no cleaning, unlike traditional thermistor sensors.

Testo digital manifolds are designed for accurate charging and troubleshooting of air conditioning, heat pump, and refrigeration systems. They accurately measure temperature and pressure to instantly calculate superheat and subcooling.