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Best Ways to Keep A Garage, Granny Flat or Bonus Room Cool During the Summer

Best Ways to Keep A Garage, Granny Flat or Bonus Room Cool During the Summer

Summer is great- as long as the heat and humidity doesn’t become unbearable.  Although most of us are able to beat the heat by heading indoors and turning the AC on, there are part of your home that may not benefit from this action.

Most homeowners don’t have ductwork in their garages, granny flats or bonus rooms.

If you’ve recently built an addition onto the ground floor of your home, or you’re thinking about adding a second story, you’ve likely learned that adding duct work will be expensive.

So now you have a problem.

You enjoy working on projects in the garage, and perhaps, your children enjoy playing video games in the bonus room. Perhaps you’re in the planning phases of building a granny flat and you’re trying to figure out the best way to keep it cool during the summer and keep it warm during the winter.

Is there a way to accomplish this without breaking the bank?

Yes, as a matter of fact, there is.

The mini split solution

You may now find yourself wondering what the heck a mini split is. Don’t worry, you’re not alone. Most Americans have never heard of this type of technology.

Mini splits are hardly new, and in fact, they’re commonly used in other countries throughout the world.

Ultimately, this is a ductless heating and cooling unit that consists of an indoor unit (that’s usually installed toward the top of an interior wall) along with an outdoor compressor unit.

Mini splits don’t require duct work, and they don’t run off a wall-based thermostat.

The devices are instead powered on and off using a remote. With that remote, you can set the temperature warmer, or cooler. You can also use the remote to tell the mini split whether you prefer it to operate as an AC unit, a fan, a dehumidifier or a heater.

If you choose one with an energy saving setting, your mini split will turn on and off (much like your central AC does) in such a way that the temperature will be regulated.

Better than wall-based units

Mini splits are a superior option to wall-based AC units or window-based AC units. They’re far more energy efficient (which means they’ll save you quite a bit of money on your monthly cooling bill) and they’re relatively easy to install.

Most installations can be completed in a few short hours.

AC experts in your area

JM Heating & Cooling is a leading, local expert when it comes to AC installation, repair, replacement and maintenance.

If you’re currently exploring solutions that will help you cool parts of your home that don’t have existing duct work, call our office today at 303-434-0115 to speak with a local HVAC expert in your area.

If you’d like more information on mini splits, along with the pros and cons of using this type of technology, call us today to schedule a free, no-cost estimate.


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  • Fay
    October 7, 2019, 3:23 pm REPLY

    I like that you said that you can have an addition and having it be inexpensive at the same time. My brother told me he would like to have a granny flat in his property. I told him he should look into hiring a professional for that.

  • Ellie Davis
    October 24, 2019, 8:18 pm REPLY

    It’s interesting to know that a mini-split can help you to keep your granny flat cool during the summers. My husband and I are thinking about building a granny flat, and we are looking for advice. I will let him know about your recommendations to keep it cool when summer arrives.

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