The cost to install a window air conditioner averages between $150 and $300, depending on the size you need. Installing a window air conditioning unit can bring added comfort for a reasonable price, but it will be less powerful than a central air conditioning system.any central air conditioning systems use the furnace blower to distribute cool air through the home. If you do not have a central heating system installed, it is cost-effective to install a heating and air conditioning (HVAC) system at the same time.
1 The average cost for a transmission fluid flush is $150 to $250 for most cars and up to $375 for lifetime fluids.2  The average cost for a transmission fluid filter and fluid service is $89 to $159 for most cars and light trucks. Midas Hawaii in Honolulu, Hawaii, offers transmission flush services for $144.99, which includes a test drive in addition to transmission fluid change.
Note: I already had approved the 4-wheel brake service for $150. Would have thought that flushing out the brake fluid would have been a part of that. We took our 2007 Prius in for its 30K service yesterday and the dealer called to say we should have the transmission fluid flushed to the tune of $230!!!