VlogOctober 1, 202624:57

How four-way valves reverse heat pump flow

Name: How four-way valves reverse heat pump flow
Uploaded: 2026-10-01T15:55:14.474846Z
Duration: 1497 s
Description: This heat pump combo class covers foundational HVAC skills and the transition to A2L refrigerants for EPA 608 and ESCO certification prep. It explains how four-way valves reverse flow for heating and how inverter technology optimizes energy efficiency. Useful for technicians, students, and people considering the trade.

This heat pump combo class covers foundational HVAC skills and the transition to A2L refrigerants for EPA 608 and ESCO certification prep. It explains how four-way valves reverse flow for heating and how inverter technology optimizes energy efficiency. Useful for technicians, students, and people considering the trade.

Comments

Tauris Tech

Study for your NYC license with the school behind this video.

Tauris Tech is FDNY-approved to teach the Q-01 refrigeration course and the F-89 Fire and Life Safety Director course. We also teach EPA 608, 36 FDNY Certificates of Fitness and hands-on classes in Flushing.

Which license do you need?