Air conditioning evaporator coils and fins allow heat to pass from the refrigerant in the system into the air, just as ...

But with a little sweat-equity you can fix it with this Arduino thermostat and temperature display ... allowing him to use a small relay to control the AC. The control algorithm is simple enough ...

Use Your Laundry Efficiently: Skip the dryer and let your clothes air dry. This not only cuts energy costs but also reduces heat in your home, saving you anywhere from $9–$20 on your energy bill.

• Not just your AC, but also appliances like your refrigerator work harder in the summer to keep things cool. Keep it running ...