TOKYO — Fujitsu Training Academy is now offering its “Airstage V-II” classes online at the Fujitsu VRF Training Center, Fairfield, N.J., and at the Alabama HVAC Training Center, Verbena, Ala. “We’ve ...

Variable refrigerant flow (VRF) technology was introduced in Japan in the 1980s, but was launched much later in the American market. Since it is still a relatively new technology here, many ...