Do Air Conditioners Use Water?
Whether air conditioner water is safe, why AC units drip, how much water they produce, and what a technician charges to clear a clogged drain line.
Fans, Air Conditioners and Heating
Keeping a small home comfortable: fans, air conditioners, dehumidifiers and heaters.
Tools
Compare room air conditioners by running cost — Every ENERGY STAR certified window and through-the-wall AC, grouped by BTU and ranked cheapest to run per cooling season.
Compare dehumidifiers by running cost — Every ENERGY STAR certified dehumidifier, grouped by capacity and ranked cheapest to run first.
Compare air purifiers by running cost — Every ENERGY STAR certified air purifier, grouped by room size and ranked cheapest to run first.
Compare electric water heaters by running cost — Every ENERGY STAR certified electric (including heat pump) water heater, grouped by tank size and ranked cheapest to run first.
Compare ceiling fans by efficiency — Every ENERGY STAR certified ceiling fan, grouped by size and ranked by airflow per watt.
Why Do Fans Have 3 Blades?
Why most fans have three blades, whether 3 or 4 blade fans work better, and how many blades are best for a ceiling fan in your room.