Going Ductless? Consider These 7 Factors Before Buying a New AC System

tips for purchasing a ductless AC system

Carefully considering how to spend your hard earned money is something many of us take seriously.

This fact is especially true when buying home upgrades, such as purchasing a new ductless air conditioning system.

Here are some factors to take into account before plunging into such an important purchase:


Most ductless AC systems will cost anywhere from $1,000 to $5,000 up front depending on the model you choose. If you want a multi-zone system, or one that’s powerful enough to cool a large room, you can expect to pay the higher amount. Don’t forget to figure in the cost of installation.


You must decide if you want a single-zone or multizone system. Single-zone ductless systems are cheaper as they cool a smaller area. If you have multiple rooms or areas you need to cool, the multi-zone is likely the best option. The good news is that a multizone system allows you to control each zone separately, saving you in energy costs.


The power of all air conditioning systems is measured in BTUs. The higher the BTUs, the larger the space your system will be able to cool. Consider your room size and then decide on the amount of BTUs required.

Check out this chart below to help you make your decision.

Area To Be Cooled (square feet) Capacity Needed (BTUs per hour)
100 up to 150 5,000
150 up to 250 6,000
250 up to 300 7,000
300 up to 350 8,000
350 up to 400 9,000
400 up to 450 10,000
450 up to 550 12,000
550 up to 700 14,000
700 up to 1,000 18,000
1,000 up to 1,200 21,000
1,200 up to 1,400 23,000
1,400 up to 1,500 24,000
1,500 up to 2,000 30,000
2,000 up to 2,500 34,00

Chart data courtesy of www.energystar.gov


The majority of ductless systems use the standard 110-120 volt outlet. However, larger systems require a higher voltage, meaning that you’ll need to have a certified electrician upgrade your plugs in order to avoid a fire hazard.

Energy Efficiency

We recommend purchasing an Energy Star qualified system. “Every mini-split air conditioner will provide the rating in their specs and the higher the number is, the better the A/C unit will perform in regard to overall energy use,” according to Compact Appliance.


Research top ductless AC brands and purchase a quality system that will hold up over the years, saving you money in expensive repairs.


Conduct your research and hire a qualified installation expert such as the personnel at Gagne Heating & AC. In order for your system to work properly, correct installation is key.