It takes diligence to keep indoor air and water clean. Here's how often you should replace each type of filter. When to ...

Learn what happens if you don't change HVAC filters. Degraded performance and system failure may occur if you don't change HVAC filters.

The advice is always the same: Change the air filters for your home's heating and air conditioning system every 90 days. But also: Do it more often if you have pets or allergies. How often is more ...

Remembering to change the filters in your HVAC system can be harder than it sounds. In addition to changing them on a regular schedule, per manufacturer instructions, you might need to change filters ...

Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...

Clean fuel is key to a healthy diesel engine. Fuel filter replacement is one of the major maintenance items that is often neglected or overlooked entirely. Diesel fuel filters also serve a dual ...

Which under-sink water filters are best? More people are concerned about the quality of their drinking water than ever before. Many buy bottled water, but more and more people concerned about the ...