Why do some stores make you go through two sets of doors when you enter and exit?

[fr]

Example

Better protection against break-ins? Better insulation?

 

[George P Burdell]

Originally posted by: fr
\Better insulation?

That would be my guess.

 

[Kromis]

Convenience I guess.

 

[Auryg]

Originally posted by: George P Burdell

Originally posted by: fr
\Better insulation?

That would be my guess.

Yep. That way the cold/hot air isn't going straight into the store while both doors are open. Kind of a buffer.

At least..that's what I think.

 

[biggestmuff]

Originally posted by: fr
Example

Better protection against break-ins? Better insulation?

Damn, and you didn't even need this thread.

 

[fr]

Originally posted by: biggestmuff

Originally posted by: fr
Example

Better protection against break-ins? Better insulation?

Damn, and you didn't even need this thread.

I need validation, dammiT!

 

[Mday]

airlock (heating and cooling), and security. same as apartment buildings.

 

[Kelvrick]

Sometimes the guy's in security like to trap people between the doors like they do when they play sims.

 

[Jeff7]

Yes, insulation, kind of like an airlock.


Some will also use air curtains, which is a "sheet" of air blown downward near the door. They help keep temperature differences out, and can also keep insects out.

 

[Eli]

Originally posted by: Jeff7
Yes, insulation, kind of like an airlock.


Some will also use air curtains, which is a "sheet" of air blown downward near the door. They help keep temperature differences out, and can also keep insects out.

Hmm.. So that's what that is..

I always thought it was the weirdest place for a large heater outlet.. LOL.

Seems like they would just use ambient air? Maybe they use hot air to moderate the air getting sucked into the store?

 

[alkemyst]

I think it works the same way was why there are two sets of restrooms.

I am not going to test that theory again though...