Special Offer!

Purchase a testo AC / Refrigeration Smart Probes Kit and receive a testo 605i via mail-in rebate

Special Offer!

Purchase a testo 549 Digital Manifold and get a $20 Gift Card via Mail In Rebate.

Digital, not Analog

Testo: One line for all AC / refrigeration systems.

Intuitive air velocity and IAQ.

The new testo 440 air velocity and IAQ meter, now available!

Increase Quality.
Lower Cost.

Testo Saveris Restaurant

Every drop is precious.

Guarantee cooking oil quality
and save costs.