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One of my buddies purchased an old Dome Style Fish Camp in Florida. The existing two ducted AC system had exposed duct work under the house that was leaking, because it was exposed to the harsh elements of the salt water. The old AC system ran non-stop most of the time. He wanted to heat and cool the fish camp, so he and his friends would be comfortable year around as it is occupied most weeks of the year.

As a Mitsubishi Elite Pro Dealer, he knew Ductless Wayne would engineer and select the correct equipment. After entering all the information into Mitsubishi's Diamond Builder Software, it was agreed to only use one Five to Heat pump, that would serve four Ductless-Wall Mounted AC Mini Splits.

So, we agreed to install one Ductless-Wall Mount Mini Split in the Master Bedroom as well as one in each of the other two bedrooms upstairs. We installed the largest Ductless-Wall Mounted AC Mini Split that serves the Kitchen Living area. Each of the Ducted-Wall Mounted AC Mini Splits is controlled by a branch box that communicates to the outdoor Five-ton Heat Pump.

After installing, we pressurized the entire Wall-Mounted Ductless Ac system with nitrogen per Mitsubishi Manufacturer directive to 600 PSI overnight. The next day, we performed a triple evacuation. We then weighed in the proper amount of Freon per Diamond System Builder.

Later, we installed the Kumo Cloud dongles, so my buddy could control all of the Ductless-Wall Mounted AC Mini Splits from his home in another state. We left a remote for each Ductless-Wall Mounted AC for those staying at the Fish Camp.

After start-up, we proved that his system can easily maintain a 22F degree Delta T in July-August.


Mitsubishi Electric uses a patented process called “flash injection” to allow the heat pump to produce such superior heating. A typical refrigerant loop in a heat pump collects heat energy from outside and transfers it inside. The flash injection process uses a bypass circuit to reroute a portion of the refrigerant to two places.

• Hot refrigerant flows back to the indoor coil to enhance heating.

• Colder refrigerant is injected back into the compressor to allow it to run at faster speeds to produce high-performance heat exchange.

In cold climates, heat pumps typically experience a decrease in pressure, refrigerant flow rate and operational capacity. Variable-capacity heat pumps with Hyper-Heating INVERTER® (H2i®) technology allow for higher compressor heating speeds at lower outdoor air temperatures, without putting extra strain on the unit or potentially causing long-term damage to the compressor. These are true cold-climate heat pumps designed to deliver 100% of heating capacity down to 5 F. This innovation means homeowners in all climates can experience the benefits of INVERTER-driven, variable-capacity heat pumps listed below:

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

• Consume Only The Energy You Need: INVERTER-driven 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-driven systems allow for quick and efficient air conditioning and heating.

• Energy Use is Even and Steady: Every time the compressor turns on in a traditional unit, energy consumption surges. On startup, variable-capacity heat pumps use less current, avoiding spikes in energy usage.

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Products Used

Mitsubishi Ductless Wall Mounted AC Mini Split

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