It's easy to take modern indoor heating and cooling systems for granted. But the reality is these units keep us comfortable and happy all year long. That's why National Indoor Comfort Week, April 23 to 29, has been set aside to recognize heating, ventilating and air conditioning (HVAC) contractors and the critical work they perform to ensure our home and work environments are comfortable https://www.youtube.com/watch?v=p-8HHIL6HbE