No, it's not recommended to install an HVAC system yourself. HVAC installation requires specialized knowledge, equipment, and permits. It's best to hire a licensed and experienced HVAC contractor for installation.

Regularly changing air filters, scheduling HVAC maintenance, and installing air purification systems can all help improve indoor air quality in your home. Additionally, keeping your home clean and dust-free can also help reduce airborne contaminants.

The size of your HVAC system depends on several factors, including the size of your home, the number of windows, insulation, and the climate. A professional HVAC technician can assess your home and recommend the right size HVAC system for your needs.

It's recommended that you change your air filters every 1-3 months, depending on usage. Clogged air filters can reduce airflow and cause your HVAC system to work harder, leading to reduced efficiency and higher energy bills.

It's recommended that you schedule HVAC maintenance twice a year, in the spring and fall, to ensure your system is running efficiently and catch any potential problems before they become costly repairs.

The recommended temperature to set your thermostat during the summer is between 72-78 degrees Fahrenheit. Setting your thermostat too low can cause your HVAC system to work harder, leading to increased energy bills.