A:  To use a timer on an air conditioner it would need to be three prong and your ac would have to be completely manual with switches. 

A:  DonaF, You are able to this item as long as it does not exceed the specs below- Max Load Resistive: 15A, 1875 Watts – AmerTac Customer Support

A:  I do have this timer and on the back of it, it is rated at 15 amps 1875 Watts resistive and at 1250 Watts, 10 amps for Tungsten (light bulbs). I hope this helps.

A:  According to the back of the timer it should. Please see the Manufacturers guidelines attached.

A:  Hi, thanks for your question. If the power goes out, then everything stops working. Your settings will still be there when the power comes back on however, your time will need to be adjusted. Should you have additional questions, please reach out to us at CustomerService@Amertac.com, we'd love to help!

A:  Settings will still be in place however you are going to have to reset the Time on it.

A:  First rotate the dial to the current time - time with an upward arrow is on the face of the dial. Then push the pins down for the period you want the timer on. For example, if you want the timer on from 7:00 PM to 1:00 AM, you push down the 7, 8,9,10,11,& 12 pins. Slide the switch on the very top face to timer on and then plug it in.

A:  First, point the arrow on the face of dial to the current time of day. Then locate the pegs on the edge, being sure that they are all pushed in before programming. Select a time period you want the appliance turned on and push out ALL the pegs that fall on or within that period. Set the switch to TIMER ON position and plug the appliance into the outlet of the timer. Finally, plug the timer into an electrical outlet to turn the appliance off and on at the times you set. If you need additional instructions, they can be found by going to our website at www.amertac.com and searching for the timer. On the product page you will see a link to download the product instructions.

A:  Little arrow inside the dial. Just spin the dial so the correct time is at the arrow.

A:  First, point the arrow on the face of dial to the current time of day. Then locate the pegs on the edge, being sure that they are all pushed in before programming. Select a time periods you want the appliance turned on and push out ALL the pegs that fall on or within that period. Set the switch to TIMER ON position and plug the appliance into the outlet of the timer. Finally, plug the timer into an electrical outlet to turn the appliance off and on at the times you set. If you need addition instructions, they can be found by going to our website at www.amertac.com and searching for the timer. On the product page you will see a link to download the product instructions.