So, after examining all the options, you chose the perfect gas fireplace. You decided a traditional style direct vent gas fireplace is best for you, completed with a rich stone surround, a sturdy hearth and maple wood mantel. And you’re thinking… all that’s left is enjoying many warm fires on cold winter nights! But wait, there’s one more decision – you need to decide what kind of chase you want.

What is a chase, you ask? For direct vent gas fireplaces, it is an insulated structure that houses the fireplace. Built according to careful specifications, a chase can either be added to the exterior of the home (a mini-chase), or installed into the living space (a reverse or interior chase). What you chose depends on how much space you have in the room, and how you’d like the fireplace to be positioned – either nearly flush with the wall, or a few feet into the room.

This infographic will help you visualize the difference between a mini chase and a reverse/interior chase…


Click here to view as PDF.

You see, with a mini chase the fireplace doesn’t require much floor space since the chase is built on the outside of the house wall. But if you have ample room and don’t mind if the fireplace extends into the room, a reverse/interior chase will work. Some fireplaces, like the Heat & Glo SL-750 Slim Line, are narrow and designed to take up only 1.5’ of floor space, so they are a great choice if you have limited space and prefer a reverse/interior chase. Keep in mind that mini chases are more expensive since they are structures that require construction, but they save floor space, which is important to many homeowners and architects.

Direct vent gas fireplaces can be installed either way. Check them out here.