There may be tax benefits to replacing your air conditioner, depending on certain factors such as the type of system and the location. In the United States, the federal government offers tax credits for the installation of certain energy-efficient HVAC systems. There could be a tax credit to homeowners equal to 30% of installation costs for the highest efficiency tier products, up to a maximum of $600 for qualified air conditioners and furnaces, and a maximum of $2,000 for qualified heat pumps. Additionally, some states and local jurisdictions may offer tax incentives for using renewable energy sources. It's best to consult with a licensed HVAC professional and a tax advisor to determine if you may qualify for any tax benefits related to replacing your air conditioner.