I thought that air vents covers were just for looks

Back when we were building our house, it was so much fun picking out all of the design elements for the different rooms.

I liked designing the kitchen and choosing which countertops and cabinets that I wanted.

It was even fun to choose the hardwood flooring and the paint colors. After we got the flooring installed, I realized that we were also going to need to choose the supply registers and return grills for the air vents and ductwork in the walls, floors, and ceiling. The HVAC contractor had worked really hard to install our high efficiency HVAC unit and I was certain that we were going to be pleased with the results. I was also looking forward to using our new smart programmable thermostat system. The house that we had lived in before had a really old furnace and an ancient thermostat dial. Plus, we had only had window unit air conditioning. So this was going to be a big difference for us. When I started looking at registers for the air vents, I thought that they were just for looks and to cover up the holes from the air ducts in the floors. But it turns out that they actually do more than cover up the rough openings. The registers actually control the proper delivery of air conditioning and heating into the living spaces in your home. You should always choose registers that are going to properly regulate the A/C and heat delivery into your home. I was glad that I could also find some pretty air vent covers that blended seamlessly into our decor.
Cooling industry