Sizing, Install & Fixes
Do Window AC Units Have Air Filters?
Yes, window AC units have air filters. Learn where the filter sits, how often to clean it, and how a clean filter helps your unit cool better.
Find the right air conditioner for your room
Plain picks and side-by-side comparisons for portable and window air conditioners from brands like Black+Decker, GE, LG, TCL and Whynter. Start with your room size, the unit you're weighing or the recall check.
Latest guides
- Portable Air Conditioners
Does a Hisense Portable AC Need to Be Drained?
Yes, most Hisense portable ACs need draining: water collects in the tank and must be emptied. Here's how the tank, drain hose and pump options work.
Sizing, Install & FixesCan You Run a Window AC Inside?
Can you run a window AC inside? Yes, if the unit vents outdoors. Learn vented setups, why a window unit won't cool a closed room, and the right gear.
- Portable Air Conditioners
Does a Portable AC Need a Drain Hose?
Does a portable AC need a drain hose? Most units drain condensate themselves in dry air, but a hose or tank dump is needed in humid rooms.
Window Air ConditionersCan a Window AC Unit Run Continuously?
Can a window AC unit run continuously? Yes, if the unit is sized right and installed well. Learn when constant running is normal and when it signals a problem.
Portable Air ConditionersDo All Portable AC Units Need to Be Vented?
Do all portable AC units need to be vented? Every hose model does. Learn how venting works and how to fit a kit to sliding, casement and crank windows.
Sizing, Install & FixesAre Window AC Units Supposed to Drip Water?
Yes, window AC units drip water when condensate drains properly. Learn where the drip should land and how to keep the drain clear.
- Recalls, Compare & Reviews
Which Air Conditioner Brands Have Had Recalls?
Researching air conditioner brands to avoid? Check model recalls, compare room size and window fit, and choose a replacement that suits your cooling needs.
Recalls, Compare & ReviewsBest Air Conditioners for Apartments
Find the best air conditioner for an apartment with room sizing, window fit checks, portable AC comparisons, renter setup tips and clear buying advice.