This is certainly for your personal security and for warranty functions. Only HVAC technicians are Accredited to handle HVAC refrigerants. They even have working experience securely working with natural fuel lines. Install the Thermostat: Mount the thermostat in a central location in your home, far from immediate daylight or drafts. https://followbookmarks.com/story21035710/the-smart-trick-of-hvac-installation-that-nobody-is-discussing