No, you cannot choose any type of boiler system to install in your home. The type of boiler system you need will depend on various factors such as the size of your home, the layout, the climate in your area, and your heating needs. It's important to have a professional HVAC contractor assess your home and provide recommendations for the best boiler system for your specific needs. Installing the wrong size or type of boiler system can lead to inefficient heating, higher energy bills, and even damage to your home. Therefore, it's important to work with a licensed and experienced HVAC contractor who can help you choose and install the right boiler system for your home