You clean the filter with a soft, dry brush, compressed air, or rinse it with a mild detergent if it is a sponge-type filter.

Duffy announces airspace restrictions amid record government shutdown A big pattern change will funnel Arctic air into the US ...

Test gas for water contamination using a simple mason jar method that reveals dangerous phase separation before it damages ...

Bulgaria is drafting new legislation that will allow it to seize control of an important oil refinery belonging to Russia's sanctioned oil giant Lukoil. The Burgas refinery is the only one of its kind ...