In this episode I run through an exercise that had me using the Testo 405i and 605i Smart Probes to determine the actual heat output of a rooftop unit. Testo Smart Probes https://www.testo.com/en-US/products/smartprobes AC Smart Seal https://www.trutechtools.com/AC-SmartSeal-Quick-Shot?gclid=EAIaIQobChMIxKSq9JjC5QIVEZSzCh1zWAAlEAAYASAAEgL-JvD_BwE Housecall Pro https://www.housecallpro.com/hvacknowitall