Fast and Simple Window AC or Installed HVAC Watt Usage and cost tool.

Fast and Simple Window AC or Installed HVAC Watt Usage and cost per hour day week month year calculator selection by TON and SEER Seasonal energy efficiency ratio

Quick Tips
12,000 BTU is 1 Ton of cooling.
Higher EER and SEER are more efficient but cost more.
Just Use this dropdown and Pick by BTU or TON to see general electric costs

You have Chosen A 1 Ton Unit. Which is 12,000 BTUs. At $.12 a kWh

	Watts/Hour	Cost Per Hour	8 Hour Cost	Monthly 247 Cost	8h/day Month Cost	8h/day Monthly KW
10 SEER	1,200	$0.14	$1.15	$105.13	$35.04	288
11 SEER	1,091	$0.13	$1.05	$95.57	$31.86	262
12 SEER	1,000	$0.12	$0.96	$87.61	$29.20	240
13 SEER	923	$0.11	$0.89	$80.87	$26.96	222
14 SEER	857	$0.10	$0.82	$75.09	$25.03	206
15 SEER	800	$0.10	$0.77	$70.09	$23.36	192
16 SEER	750	$0.09	$0.72	$65.71	$21.90	180
17 SEER	706	$0.08	$0.68	$61.84	$20.61	169
18 SEER	667	$0.08	$0.64	$58.41	$19.47	160
19 SEER	632	$0.08	$0.61	$55.33	$18.44	152
20 SEER	600	$0.07	$0.58	$52.57	$17.52	144
21 SEER	571	$0.07	$0.55	$50.06	$16.69	137
22 SEER	545	$0.07	$0.52	$47.79	$15.93	131
23 SEER	522	$0.06	$0.50	$45.71	$15.24	125
24 SEER	500	$0.06	$0.48	$43.80	$14.60	120
25 SEER	480	$0.06	$0.46	$42.05	$14.02	115
26 SEER	462	$0.06	$0.44	$40.44	$13.48	111

Incendar's 2 cents on Window ACs, Central AC, HVAC, SEER, BTU, and stuff:

If you live in Florida, a 10 EER or so WINDOW AC makes for a cheap backup unit for hurricanes / Central AC dies.
This is a must with older family, in which case, pick up a emergency generator too. 12 EER+ can make nice longer term units.

A 5000-6000 BTU can easily handle a bedroom, and is also lighter weight, easy install, smaller generator needed.
Window Units are rated for Sq feet based on running 8 hours/day, if you run it for 16-24, it can handle a much larger area.

I personally use a window unit running 24 hours a day in addition to Central air in Florida June-August to keep a room at an ideal 68 F.
Works out great to save some money spot cooling an area where I am, and for hurricanes or power loss, as it's ready to go.

If you are getting a new Central AC, don't worry too much for high SEER, 14-16 is just fine and keep in mind the refrigerant
will likely be banned in 5 years time so you will be getting a new one anyway soon as anything goes wrong.

You can actually use the different SEER in above table to also come to my conclusion, as the monthly savings dont overcome the higher SEER units in most cases.