President Jeff Turner told Nashville's News 2 right now his company is averaging about five or six sales a day and workers have been installing two shelters each day.
"Once the holidays are over, the phone starts ringing," Turner said.
He said following last week's 14 tornados even more people have called.
"That transposes everybody's mindset. All of a sudden it's like ‘Oh yeah, I want to do this,'" he continued.
Below-ground tornado shelters cost around $5,500 and hold between six and eight people.
"It's an insurance policy is what it is," Turner added.
If a storm shelter is not in the budget, Turner reminds everyone to have designated safe spot with helmets and an emergency preparedness kit, including sturdy shoes, a fully charged cell phone, a blanket, a battery powered flashlight and glow sticks, a weather radio, a whistle, water and a personal locator beacon.