Don’t wait until you own a home to change your air filter! Live in an apartment? Ask your maintenance team if you can change your filter. A 1 in. filter should be changed every 30 to 90 days. This filter hadn’t been changed in 9 months, no wonder this couple had allergies! #CampaignBreatheEasy #HomeAirFilter #NordicPure http://ow.ly/KIC7304amW1 http://ow.ly/i/mZkXN