Mitsubishi Ductless Systems

Air Conditioning

Mitsibishi Ductless Air Conditioning

Air Conditioning used to be a luxury. Today it is a necessity. An air conditioning system will not only regulate your home comfort zone, it will purify the air you breathe by filtering out dust, pollen, odors, allergens, bacteria, mites, and other particles. The secret is Mitsubishi’s catechin-infused filter system which employs a pre-filter and an anti-allergy Blue Enzyme filter.

What is a ductless A.C. system?

A ductless A.C. system includes a condenser unit positioned outside the building, an indoor evaporator, line sets (pipes connecting the condenser and the evaporator), a power cable between the units, and two drain pipes leading from both units.

Indoor ductless systems come in 4 different variations: wall-mounted, floor mount, cassette (ceiling unit) and concealed unit installed over the ceiling.

Ductless systems can be used the entire year for both heating and cooling. The majority of the various brands available work efficiently to minus 5 degrees (centigrade) outside temperature. Some low ambient temperature units will continue to operate efficiently to minus 25 degrees. These ones are designed for computer server rooms and other areas that need to be kept cool throughout the year.

What sizes do ductless units come in?

Indoor units come in 6000, 9000, 12,000, 15,000, 18,000, 21,000, 24,000, 30,000, and 36,000 Btu. (Btu stands for British thermal unit. One Btu is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.) Outdoor units range from 9000 to 60,000 Btu.

Different manufacturers will provide a different array of sizes. The optimal size for your home results from a calculation based on your home’s square footage, the number of windows in the home, and the height of your ceilings. Another factor to consider is how much sunlight comes in through the windows. The correct size of unit (number of Btus) is very important. If you err on the side of smallness, the result may be inadequate temperature in your comfort zone, not cool enough or possibly an A.C. unit that overheats. If you choose an overly large unit, it may not remove enough moisture from the room resulting in an uncomfortably humid or clammy environment. The web has a few Btu calculators, but we suggest contacting Pro Ace Heating and Air Conditioning to get an exact number. Pro Ace always offers free advice on any HVAC concern. We have been installing, servicing and repairing furnaces, boilers, gas fireplaces, and all kinds of Air Conditioning units in the Lower Mainland for over 22 years. And we are always willing to visit you at your place of residence anywhere in the Lower Mainland to take measurements and assess other factors to make sure you get the optimal ductless Air Conditioning unit for your home, townhouse, office or other commercial space. Besides Mitsubishi ductless A.C. units, Pro Ace carries Trane, LG, Samsung, Daikin, and Fujitsu makes and models. No matter how your home, townhouse or office is configured, Pro Ace will be able to provide the optimal HVAC system.

Perfect your comfort zone while saving you money and conserving energy!

Pro Ace Air Conditioning technicians are trained and certified to Service, Maintain, Repair and Install a variety of Ameristar Ductless systems.

Pro Ace Heating and Air Conditioning Mitsubishi Ductless Installation.
No matter if you live in a condo, townhouse, house, Pro Ace Heating and Air Conditioning will find a good solution for you. This includes a proper sizing, an effective design, at reasonable costs.

Pro Ace Heating and Air Conditioning Mitsubishi Ductless Repair.
Pro Ace Heating and Air Conditioning technicians are red seal certified refrigerant mechanics. With years of experience in delivering efficient, reliable service. 

Pro Ace Heating and Air Conditioning Mitsubishi Ductless Maintenance.
At Pro Ace Heating and Air Conditioning has been maintaining commercial and residential Mitsubishi Ductless Mini-Split systems since 1995. We provide knowledgeable, reliable, and reasonable service to keep our customers satisfied for a lifetime.

If you want to know more about our ductless and mini-split, please Contact Pro Ace Heating & Air Conditioning Services with your questions

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What people are saying about us!


Took advantage of a furnace maintenance program that they were offering and they came and did a fantastic job of cleaning and checking the system for any gas leaks. They were thorough in their cleaning and very nice to work with.

Jazozika Holding

Thank you for the great service I received in April 2012. Your service men were quick and efficient and on top of it very freindly.


Many thanks to Grant for identifying our problem and to Ali and his assistant for fixing it promptly and efficiently. Very friendly service men!

To book this service, simply contact us by calling at 604-293-3770