Should You Use Your AC When There’s Wildfire Smoke Outside?

If you are reading this from northern Minnesota, you know that it is an incredibly smoky day. There are wildfires burning in our neck of the woods and it is having a major impact on wildfire smoke.

You are advised to stay indoors, even if you are healthy and don't have any lung issues. You should limit your time outdoors as much as possible until the air clears up.

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At the time of writing, the smoke is expected to continue until the end of the week. When I woke up this morning, I thought it was raining because that's how gloomy and dark it was outside.

The wildfire smoke also brings up some other questions, like what you should do differently over the next few days. With hot temperatures also impacting us this week, you may be wondering if you should run your air conditioning.

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Should You Use Your Window AC Unit In Northern Minnesota Right Now?

You may be tempted to in order to get a break from the smoke but certain types of air conditioners could actually bring more smoke into your home. If you have a window AC unit, the EPA suggests that you find out how to close the outdoor air damper on it.

RELATED: The One AC Fix All Minnesotans Should Make In July

You should then make sure that the seal between the unit and the window is as tight as possible. If you cannot close the outdoor air damper, you should opt out of using the window AC unit and use a fan instead.

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Can You Use A Portable Air Conditioner In Smoky Conditions?

According to the EPA, if you have a portable air conditioner with one single house that is vented outside a window, you should try not to use it in smoky conditions because it could bring more smoke into your home.

RELATED: This Is What Happens To Lake Superior In Extreme Heat

However, if you have one that has two hoses, that is a better option. You should make sure the seal between the venting kit and the window is as tight and secure as possible. If not, opt for an indoor fan or window AC unit during smoky conditions.

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Other Recommendations For Smoky Conditions Per The EPA

Last but not least, if have a central HVAC system, you should either close it or set the system to 'recirculate' mode. You should also ensure that filter is in good condition and fits well into the filter slot. You should also consider upgrading to a MERV 13 or higher filter if you can and if you know smoky conditions are in the forecast, per the EPA.

Smoke can make its way indoors, even if your windows and doors are shut so be proactive and take the steps needed to stay safe in this wildfire smoke. Stay safe out there!