The average cost to install a window air conditioner is $187, with most homeowners spending between $100 and $300. Labor costs usually account for 60% to 80% of the total cost, while the cost of the air conditioner itself accounts for the remaining 20% to 40%.Window air conditioners require very little maintenance and can last 10 to 12 years when properly installed and maintained. Annual servicing is recommended, however, to ensure optimal performance and avoid costly repairs down the road. A service technician will typically clean filters, check electrical wiring and connections, lubricate moving parts, and inspect the compressor for any signs of wear or damage. Depending on where you live, service rates may vary.

It depends on a few factors, such as the brand and size of the air conditioner, as well as the location and accessibility of the unit. Generally, though, expect to pay around $100-$200 for a professional to install and service a window air conditioner.