As an HVAC expert with years of experience, I have encountered many homeowners struggling with the question of how long it takes to install a replacement AC unit. The good news is that it can usually be done in less than a day, with the average installation time ranging from 4 to 8 hours. However, the actual duration of the process can vary depending on several factors. When replacing a complete system, your HVAC technician will not only replace the unit itself but also install or replace the ductwork and wire the thermostat. This additional work can significantly extend the installation time, taking anywhere from three to five days.
While the unit itself can be replaced in just one day, the ductwork installation can take up to four days, depending on the complexity of the project. But let's focus on the more common scenario where only the AC unit needs to be replaced. In this case, you can expect your new air conditioner to be installed in just one day, as most installations take between 4 to 8 hours. So, you won't have to suffer in the sweltering heat of your living room for too long.
