The answer to 'types of system upgrade' is that there are several common HVAC system upgrades homeowners can consider to improve efficiency, comfort, and performance. Some of the most popular upgrades include replacing an old furnace or air conditioner with a newer, more energy-efficient model, adding a smart thermostat to better control temperatures, upgrading ductwork to improve airflow, and installing a whole-home humidifier or dehumidifier for better indoor air quality.
When considering an HVAC system upgrade, it's important to work with a qualified professional who can assess your home's specific needs and recommend the best solutions. They can help you evaluate the costs and benefits of different options to ensure you make the most informed decision for your home and budget.