Ductless Air Conditioning

Ductless Air Conditioning

In the midst of a hot, humid summer, your home should be a place of relief- not one of scorching frustration. Properly installed, ductless air conditioners keep your house cool, allow you to breathe clean air, and keep your energy bill down.

Ductless Air Conditioning in the GTA

As suggested by its namesake, ductless air conditioners do not require ductwork. Instead, the indoor evaporator unit directly pumps cold air into the room. The evaporator is connected to a (usually wall mounted) condenser via a slim cable lined with coolants.
Generally, each room has cold air supplied by its own evaporator and adjacent condenser (minisplit). Depending on building needs, up to four evaporator units can be connected to one mounted outdoor condenser (multisplit).
Many ductless units feature a reverse heating function. During mild winter temperatures, ductless air conditioners can lessen the burden of a home’s central heating system, creating additional energy savings.

Why go ductless?

Being wall-mounted units, ductless air conditioners give you flexibility when deciding where to install. Ductless air conditioners are commonly found in older houses, where ductwork would be too complicated and expensive to install. Ductless units are also popular in small homes (under 2,000 sq ft) and apartment units, where a central air conditioner would generate too much energy for the areas being cooled.

Ductless units are especially effective in multi-storey buildings, as cold air naturally travels downwards. Central air conditioning in such situations may be impractical, as energy is wasted piping the cold air upwards. Lastly, ductless units can be used for extensions to your house, without the need to overhaul the existing central air conditioning system.

When a room requires specialized cooling- for example, a server room that houses thousands of dollars worth of fragile electronics- ductless air conditioners can fill the void.

Given proper installation, ductless units use around 30% less electricity than their central air conditioning counterparts, because the cold air doesn’t have to be piped through ducts.

Ductless units allow for better zone control- in other words, controlled cooling of different rooms only when needed.

Time to replace your Central Air Conditioner?

When you experience or notice the following, it may be time to consider a new air conditioning unit:

  • Inconsistent room temperatures throughout the house
  • Your house is always humid during summer months
  • Your air conditioner is 10-15 years old, the end of its useful life. A lack of maintenance can further shorten its lifespan
  • Your air conditioner is very loud when it runs
  • Your air conditioner requires constant repairs to keep it running
  • Your air conditioner’s warranty is expired
  • Your energy bill this summer is unusually high


Consider that heating and cooling costs make up over half your energy bill. Continuing to run an aging, obsolete air conditioner can cost more over a few months than buying a newer, more efficient model. Technicians at One Alliance HVAC can determine if your current cooling system is too costly to run.

Every home has its “ideal” A/C setup- one that minimizes power consumption yet delivers comfort to the home’s occupants. Ductless units must also be installed in the correct location for most effective operation.

Finding the right air conditioner involves some serious math- namely, load calculation. Fortunately, you’re not alone. One Alliance HVAC technicians can work with you to select and install a cost effective, efficient, and long-lasting air conditioning system.

Contact One Alliance HVAC today for your free quote!