How much did an AC unit cost in 1990?

In 1990, the cost of a window air conditioning unit typically ranged from $200 to $600, depending on the brand, size, and energy efficiency. Central air conditioning systems were more expensive, often costing between $2,500 and $5,000, including installation. Prices varied based on features and local market conditions. Adjusted for inflation, these prices would be significantly lower than today’s costs.