There are four main types of venting systems used by gas fireplaces. The four main types are as follows:

  1. B-Vent
  2. Direct Vent
  3. Vent Free
  4. Outdoor (Ventless)

The following describes each of the four major venting systems in more detail:

The B vent always exits the {+}

Loving My Customer16 Nov 2008

Recently I arrived at a customer in Denver who explained that another company had come to fix their fireplace and it did not go well. The other company dissembled their fireplace and then said it could not be fixed. The solution was to have the customer buy a new fireplace that would cost $4,500. As you can imagine, this customer was quite distraught. After an exchange of words, the other company just left - without even putting things back together. This is a good example of not loving your customer.   So, here I am. The fireplace is in a million pieces and it's pulled apart so that I cannot even run diagnostics to narrow down the problem. This is worse case scenario for me. The {+}
A vented gas fireplace is where you have a fireplace that is vented to the outside. This fireplace is generally safer and can be run for long periods of time without causing your room to be too hot. This is the most common type of gas fireplace int he Denver area.   A fireplace that is not vented means the air that it consumes comes from the room where the fireplace is situated. In addition, none of the heat it produces escapes to the outside. This type of fireplace produces a ton of heat and has to be cycled on and off throughout the day. {+}