• Wed. Sep 27th, 2023

Everything You Need to Know About Installing a Ductless Mini Split System


May 30, 2023

If you are planning to install a ductless mini split air conditioner, one of the most crucial decisions you will have to make is selecting the right-sized unit to suit your particular needs. Picking the perfect size of ductless mini split unit for your home is critical to maintaining a comfortable environment while controlling energy usage and avoiding unpleasant surprises from your energy bill. With so many choices available on the market, it can be overwhelming to choose the most appropriate size for your space. In this article, we will provide you with some tips on how to choose the right ductless mini split unit for your home.

1. Understand the importance of choosing the right size

The size of your ductless mini split unit determines how effectively it removes humidity and heat from your home, thereby ensuring a comfortable temperature level. An undersized unit will struggle to keep up with demand and leave you feeling uncomfortably warm. Alternatively, an oversized unit can cause problems as it will periodically cycle on and off, leading to suboptimal comfort levels and significantly increasing your energy bill.

2. Assessing your home’s air conditioning requirements

Calculating the appropriate unit size depends on many factors that are unique to your home, such as its size, floor plan, insulation, and even the number of people residing in it. Professional air conditioning contractors typically use a calculation known as Manual J to identify the ideal unit size required for your home, ensuring that it accurately matches your air conditioning needs.

3. Choose high-quality equipment

When choosing your ductless mini split unit, ensure you are purchasing from a reputable manufacturer with professional after-sales support. Also, keep in mind that high-quality equipment typically comes at a premium price but saves you money in the long run, with better operation, higher efficiency, and longer lifespans.

4. Get professional installation

You can have the right ductless mini split unit, but if it is merely installed correctly, you are not going to benefit from all the energy and cost-saving benefits. It is crucial to get professional installation from a licensed air conditioning contractor who will, among other things, correctly size and install your unit, ensure all pipes are leak-free, and perform proper electrical wiring for your safety.

5. Consider upgrading to smart technology

You can enhance your ductless mini split unit’s energy efficiency by incorporating technology to help automate temperature regulation, such as thermostats, timers, and smart automation systems. These tools provide flexible scheduling, temperature control, and usage tracking, ensuring you don’t use more energy than necessary.


Choosing the right size of your ductless mini split unit is an essential decision requiring careful consideration. It would help if you sought professional advice on determining the appropriate size, purchasing high-quality equipment, getting professional installation, and incorporating smart technology to increase your energy efficiency. With these tips, you can ensure that you select the right-sized ductless mini split unit to keep your home comfortable all year long.

By George