Mitsubishi Electric - HVAC School

Mitsubishi Electric is a leading manufacturer of high-performance ductless and ducted residential heat pumps and Variable Refrigerant Flow (VRF) HVAC systems. Both their commercial CITY MULTI® and residential Zoned Comfort Solutions® lines provide efficiency, personalized comfort, and aesthetic appeal. Their electric-powered systems conserve energy and promote environmental stewardship in any application while also offering a wide range of indoor unit styles. With a nation-wide distribution and support network, Mitsubishi is proud to partner with industry professionals in developing a comfortable, efficient, and high-performing built environment. We are very happy to have Mitsubishi partnered up with us here at HVAC School.

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Rely on Mitsubishi Electric to Deliver VRF Solutions Built for Your Business

Mitsubishi Electric introduced VRF zoning technology to the United States and has continued to advance the category with industry-leading products, training, and support. Our VRF experts have helped solve complex HVAC challenges in buildings of practically every shape and size across the country. Learn how we can help you design the system that’s right for your building.

Products We Love

Outdoor Unit Single-Zone Cooling Only (PUY)

Cooling-only light commercial ductless systems with INVERTER-driven compressors for improved energy efficiency provide 100% cooling capacity even when it's -40º F outside.

Outdoor Unit Water-Source Heat Recovery (WR2‑Series)

Modular heat recovery systems that combine the efficiency of water source with VRF technology.

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Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

Bryan describes the tricky concept of power factor and why we should care about it. He also compares power factor to a beer mug to make the topic easier to understand.

Power is often represented on a sine wave, which is a curvy line that marks the state of electrical energy at different points on a circle. Power gets stronger and weaker, and it goes above and below the neutral line depending on the excess or deficit of electrons.

Unity power factor refers to a power factor of 1, indicating that voltage and amperage are perfectly balanced; there is no lag. However, an inductance (a form of resistance) opposes the current and causes an imbalance between current and voltage. Power loss or quality refers to the difference between the input and output power that results.

Apparent power refers to volt-amps, which we’d traditionally consider to be the wattage; however, in an inductive load, the true or real power (wattage) accounts for that power loss and comes from volts x amps x power factor. We can imagine power factor as a mug of beer: apparent power (VA) is the entire mug, the foam is reactive power (wasted), and the beer itself is real power. The power company only charges for the real power, not the reactive power. However, a power factor closer to unity can help prevent motor windings or wires from overheating.

To get closer to unity power factor, we need to make sure we have a run capacitor of the correct size. You can measure power factor with a power quality meter.

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