Three-phase heating, ventilation, and air conditioning

Choosing to use three-phase HVAC equipment is a no-brainer. Heating, ventilation, and air conditioning equipment are some of the most power hungry electrical loads in most buildings. The increased efficiency that comes with choosing three-phase can mean huge cost savings every month.

Unfortunately, three-phase power isn't available everywhere. It can still make a lot of sense to use three-phase HVAC equipment, even on single phase. When you pencil out the cost savings of using a rotary phase converter, a lot of the upside evaporates due to the high standby power usage of rotary phase converter technology. More and more HVAC equipment is also coming with variable frequency drives (VFD) installed internally, along with other sensitive electronics. These electronics need high quality, balanced, 3-phase power or they can be damaged.

In these cases, Phase Perfect® will allow you to have your cake and eat it too. You get low standby power usage and utility-quality three-phase to run any three-phase HVAC load, all on single-phase power!

The modern, microprocessor-controlled, Phase Perfect® is able to respond instantly to power demands ensuring quality, balanced power is there when you need it, but power isn't wasted when you don't.

HVAC / air conditioners close up view

Horsepower rating of largest or combined load that will be connected to the Phase Perfect®

The cost in cents per kilowatt/hour your utility charges you for electricity usage. You can estimate costs for your region by looking at the Average Price Chart on

Weeks per Year
Days per Week

Number of weeks per year and days per week you anticipate needing 3 Phase power available. For example: a business with typical operating hours might be 50 weeks per year and 5 days per week, while an elevator installation would require 52 weeks per year and 7 days per week.

Hours Per Day

The number of hours per day you anticipate not drawing a significant 3 Phase load. For example: a typical business might not draw a significant load right away in the morning, during breaks, or over the lunch hour, while an elevator might be idle 20 or more hours per day.

Modest HVAC installation, estimated annual savings with Phase Perfect® versus Rotary:


 Phase Perfect®Rotary Converter
Starting Load Horsepower2040
Standby Power Consumption80W2260W
Idle Power Cost$48.92$1,382.04

Phase Perfect®

The original Phase Perfect® supplies power to some of the most demanding applications available under some of the most challenging conditions imaginable. Utility-quality three-phase power anywhere you need it.

See the Phase Perfect®
Phase Perfect® Enterprise

The Phase Perfect® is also available in a compact, high-value, configuration where the customization options of the original are not required. These Enterprise models have the same modern digital phase conversion technology inside as the original.

See the Phase Perfect® Enterprise