How to Choose The Right Mitsubishi Mini-Split A/C System on Cape Cod

So you’ve decided you want to invest in a high-quality ductless mini-split A/C system from Mitsubishi, but you’re still fuzzy on the details? There are a lot of factors to consider even once you’ve committed to a ductless heat pump system and a good manufacturer. Today, we’ll look into what those factors are, and how you can pick the right Mitsubishi ductless mini-split A/C system for your Cape Cod, MA home. Continue reading this blog post from Hall Oil about the top things to think about as you are choosing your Mitsubishi mini-split air conditioning system.

The Basics of Mitsubishi Ductless Mini-Split A/C

Any standard Mitsubishi mini split system installations is going to have certain things in common (other than high quality components):

  • A condensing unit outside
  • One or more indoor units which provide A/C and heat
  • Refrigerant lines connecting the indoor units to the condensing unit
  • A wall monitor or remote control for management of your system
  • Quiet and efficient, due to heat pump technology
  • No need for window access, unlike a window A/C unit

You can expect to see these in every unit. Now, let’s see how they diverge between different ductless mini-split air conditioning systems.

Single-Zone vs. Multi-Zone

Mitsubishi offers a selection of single-zone and multi-zone ductless mini split A/C systems. Here is how these mini-split air conditioning systems from Mitsubishi are different:

Single-Zone Mini-Split A/C

A single-zone system features a single indoor unit matched to the outdoor unit, used most frequently when you have a single particular room or area of your house you want to keep cool without ductwork, with high efficiency, or with specific control independent of a central system servicing the rest of the building.

Multi-Zone Mini-Split A/C

A multi-zone system has multiple indoor units—as much as five—connected to a single outdoor unit, meaning you can have five different rooms climate controlled independently on a single system, giving you unparalleled control over the temperatures of the different rooms of your building. If you plan to completely replace your central air conditioning with a ductless system, or don’t have a central system, you probably want a multi-zone system.

Related Post: Everything You Need to Know About Ductless Mini-Split Heat Pumps


When you’re choosing a Mitsubishi mini-split system, you’ll need to consider the BTUs the system can push—that’s the measurement of how much cooling (or heating) power a unit really has. For single-zone systems, you’ll want to think in terms of how many BTUs you’ll need for the one room you’re servicing, while multi-zone systems have large ratings for the outdoor system and smaller ratings for the indoor units, which both will need to meet your requirements for whole-house and room-specific BTU totals.


While a Mitsubishi mini split is inherently efficient for heating and respectably efficient for cooling, there are differences between models, even within a manufacturer’s lines. You’ll want to look at the Seasonal Energy Efficiency Ratio, or SEER number, on a unit to determine its cooling efficiency. The bigger the number the better.

If you’re also looking at heating efficiency, the Heating Seasonal Performance Factor offers the same information for heating efficiency, and works the same way. As a general rule, you’ll pay more up front for higher efficiency, but will often save in the long run (depending on how much you use your unit).

Compressor Type

Modern ductless mini-splits from Mitsubishi also come with two different types of compressor to consider. Inverter compressors are designed to be more frugal with their energy use, reaching the intended setting and then idling, while rotary compressors always turn on with full power. Most Mitsubishi ductless mini splits have moved to inverter compressors for improved efficiency, but it’s good to be aware of the difference.

Related Post: Central A/C vs. Ductless Mini-Split A/C: What’s the Difference?

Hall Oil Can Help You Choose Your Mitsubishi Ductless A/C System on Cape Cod

Past these key features, there are many smaller features you might want to consider. How you can control or direct the air, remote control versus wall unit controls, washable vs replaceable air filters, and so on. While these are unlikely to make or break your preferences, they can mean the difference between two close contenders, so make sure to look at the minor features if you get stuck past the bigger ones.

Ultimately, you’re probably balancing your preferences for a flawlessly powerful and efficient unit against budgetary constraints; just keep in mind that saving now might not mean saving in the long term, if you compromise on efficiency or cooling potential and have to upgrade or spend too much on energy. Hall Oil Gas and Electric performs ductless mini-split air conditioning system installations across Cape Cod, MA. In addition to installations, we can also help you with Mitsubishi ductless mini-split replacements, maintenance, tune-ups, and repairs. We provide HVAC service plans, emergency A/C service, and natural gas conversions.

If you’d like to learn more about Mitsubishi mini-split A/C systems for your Cape Cod home, reach out to the team at Hall Oil Gas and Electric to find out more. Dial 508-398-3831 or reach out to us online.