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There is now a number of options available to people seeking to keep the air inside the home at the perfect temperature year-round, but which one is right for you? Ductless systems provide a cost-effective alternative for applications where ducted equipment would be unfeasible or for those who wish to reduce their energy consumption and save money.

Like a conventional split system, Mr. Slim ductless heating and air conditioning units by Mitsubishi include an outdoor condensing unit to help minimize interior noise. However, unlike central A/C units that enclose the blower, compressor, and evaporator coil inside a single unit, a Mitsubishi ductless system’s components are housed in individual units which are then placed strategically throughout the building. The component’s enclosures are hidden within the ceiling or interior walls, with no need for unsightly ducting.

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Conventional air conditioning units use a system of metal or flexible plastic ducting. Over time, these connections degrade and leak, causing loss of efficiency. The ducting is usually not insulated, and even when they are, that too becomes less efficient as it ages. These factors can account for as much as 30 percent of the unit’s total energy consumption.

By contrast, Mr. Slim units by Mitsubishi deliver air directly to where it is required without passing through a network of ducts. The ability to place individual coil units throughout the building creates independent zones of heating and cooling, allowing the thermostat in unoccupied rooms to be set higher, which equates to substantial energy savings.



Though the initial costs of installing ductless heating and air conditioning equipment is higher than that of a conventional system or a room air conditioner, ductless systems are extremely cost-effective over the course of their life, and within a few years, your savings will have far outstripped any savings you might have made by choosing a less efficient system.


In a conventional system, dirt and debris inevitably accumulate inside the ducting. When moisture is added to the equation through condensation, mold, and fungi soon flourish, further degrading the quality of the air quality. This can dangerously aggravate the condition of those who suffer from allergies, asthma, and other respiratory problems. The seals of window units are compromised quickly when exposed to the element, allowing contaminants and unconditioned air to enter. In addition, ducted units are noisy; a problem that only grows worse over time.

The evaporator coils in Mitsubishi ductless systems are easy to access and clean. Because there is no need for ductwork, harmful organisms are unable to thrive and dirt and dust have nowhere to accumulate, helping you maintain a cleaner, healthier, and fresher smelling living area or workspace.




If a central air conditioner or heater malfunctions, the entire system is affected, and temperatures and humidity will rapidly become uncomfortable until the unit is repaired. During periods of extreme summer heat or ice-cold winters, this can be potentially fatal for the elderly and small children. Since Mitsubishi ductless heating air conditioning systems employ multiple heating and cooling units in different zones, occupants can move to a safe area of the home or office while awaiting a maintenance team.

If you need your Ductless system repaired or replaced, or if you’re thinking about having a new system installed, call or email us today.


A huge shout out to 1st Class HVAC we were having problems with the heat in our home , I have had to stay awake for the last six days…

Ric Fowler

In the beginning of September(when the temps were in the 90’s)our central A/C died. We called and they sent a technician named Mike who found the problem and got it…

Jean Burkhardt

The problem first came up on Memorial Day. Gary arrived quickly even though it was a holiday. He discovered the problem and had to order a part which they did…

Dolores Fidishun

Every member of the team was professional, courteous, knowledgeable, respectful, industrious, and delivered such high quality product that I was impressed beyond belief. Duane took the time and effort and…

Steve Feher

Our 12 year old Central AC unit burnt out and needed replacing. We contacted our current service company for an estimate to replace. The sales rep showed up with three…

Bruce Temple

Working with Sean Walsh to design and install our replacement HVAC system was a delight. Mr. Walsh was extremely knowledgeable and did a great job explaining our options based on…

N Marvin

Arrived at our second home only to find that our heat would not come on for what was the coldest night of the season so far. Called First Class, as…


First Class is an outstanding company. My Mitsubishi system was installed by them and now a complete of two bath breakdown and replacement of bath items and pipes was completed…