The answer to 'how much to replace air conditioner' is that the cost can vary significantly depending on several factors. As a general guideline, a typical air conditioner replacement for a home can range from around $3,000 to $10,000 or more.
The specific cost will depend on factors such as the size and efficiency of the new unit, the complexity of the installation, the brand and model you choose, and any necessary ductwork modifications. Additionally, the location and labor costs in your area can also impact the overall price. It's important to get multiple quotes from local HVAC contractors to get an accurate estimate for your home.