Mini Split Ductless Heating





When ductless mini split heating and air conditioning units first became popular, they had one very serious limitation – they were not recommended for homeowners in extremely cold climates like Chicago. Many manufacturers would recommend that homeowners who live in northern regions adopt a supplemental heating source for extremely cold days, which cancelled out the energy efficiency of the ductless mini split units. Many ductless systems were actually designed to shut down at -10º F in order to protect the technology from failure. This left homeowners using radiators, furnaces, and space heaters to heat their homes. Greenleaf Mechanical has actually recommended clients to use their mini split systems to about 30°F to be safe and to keep the efficiency intact. Long gone are those days.

Technology has finally evolved and homeowners can now achieve exceptional, year-round comfort with a single or multi-zone split-ductless unit. These new ductless units are able to provide heating at maximum efficiency no matter how cold the climate – even to -13º F, which is good enough to for the coldest nights in the Chicago area.

How Does it Work?

Traditional split systems lose heat energy in the outdoor coil. Thanks to recent advances, Hyper-Heating INVERTER technology (H2i®) is able to collect that energy, helping the mini split system to continue to operate at capacity in extreme temperatures.

In cold climates, ductless heat pumps typically experience a decrease in pressure, refrigerant flow rate and operational capacity. INVERTER technology actually allows for higher heating speeds at a lower temperature, without putting extra strain on the unit or potentially causing long-term damage to the compressor.

Some of the differences between traditional ductless mini split technology and the H2i technology that make it attainable for those who live in cold climates include:

Consistent Room Temperature – No Ups and Downs, Ons and Offs: Conventional heat pumps experience uncomfortable and extreme temperature fluctuations while INVERTER-driven pumps are able to self-adjust, providing consistent room temperature, even when the outdoor temperature dips below zero.

Consume Only The Energy You Need: INVERTER zoning systems deliver only the amount of hot air needed to achieve the desired temperature – no more, no less.

Heats Up Quickly: It takes traditional systems a very long time to reach the desired temperature, while the high rotation speeds of INVERTER systems allow for quick and efficient cooling and heating.

Energy Use is Even and Steady: Every time the compressor turns on in a traditional unit, energy consumption surges. On startup, INVERTER systems use less current, avoiding spikes in energy usage.

Homeowners who live in extreme climates have been traditionally left out in the cold when it comes to the ductless cooling and heating revolution. For decades, they have remained tethered to baseboards, and inefficient ducted systems. INVERTER technology has finally set Northerners free, giving them the ability to achieve energy-efficient and consistent home comfort, no matter how high or how low the mercury may go.