If you have a granny flat above your garage, that offers functional space for guests or extended family. However, to ensure the residents or visitors of your granny flat are comfortable, you may need to add air conditioning. Ideally, you should select a split system ductless unit. Here's why:
1. Split system air conditioners have their own thermostats.
When you install split system air conditioners, you get to create zones. Depending on the size of your granny flat, it may be one distinct zone separate from your house, or if you have a large flat, you may divide the flat itself into multiple zones.
Regardless of how many zones you have, they each feature their own thermostat. This means that you can set your home at one temp and your granny flat at another temp. If no one is staying in your granny flat, you can cool your home, but you can turn the AC in the granny flat off, helping you to save energy.
Similarly, if someone is staying in your granny flat, they can control the temps on their own. This allows them to create the comfort level they need.
2. A split AC system doesn't put stress on your existing cooling system.
If you have ducts running through your home connected to your air conditioner, you have the option to cool your granny flat by simply extending the ductwork to it. Unfortunately, there are several downsides to this approach.
In most cases, your current AC has been specifically selected based on the size of your home. If you increase the amount of space you need it to cool, your air conditioner may not be able to keep up with the demand. In contrast, with a split unit system, you don't put additional stress on your existing air conditioner.
3. Split system air conditioners protect your granny flat from garage fumes.
Additionally, if you decide to cool your granny flat using a ducted system, you will likely have to run the ducts through your garage. If you have vents in your garage, toxic fumes from your car can travel through the vents, into the ducts and into your granny flat.
However, if you opt for a ductless AC unit, you don't have to worry about fumes from the garage reaching your granny flat through your cooling system. To further protect the air in your flat, you can also add a filtration system to your ductless AC unit.
To learn more about why ductless units are typically the best option for granny flats, workshops, additions or other similar areas, contact an AC specialist.