The term unvented ventless or vent free is applied to hearth appliances that burn gas natural gas or propane and do not require any kind of chimney or vent system.
Does propane fireplace need chimney.
Since there is no venting all of the warmth generated from the fire stays in the room where it is installed.
Traditional gas fireplaces like their wood burning cousins require an exhaust flue vent to remove harmful fumes from the home.
According to the chimney safety institute of america csia some of the new gas fireplaces still recommend or require an annual chimney cleaning.
This allows them to be placed pretty much anywhere within a home except bedrooms and bathrooms.
Plus it limits the number of penetrations into the home which is valuable for saving energy.
Some require venting systems and some don t.
In many cases these acids may wreak havoc on your chimney without producing any external symptoms until the problem has become dangerous or expensive to repair.
Ventless fireplaces require no flues or chimneys.
Vent free hearth products can be installed without venting up a chimney or to the exterior of the house.
This terminology is also used to describe other niche type fireplaces such as electric and ethanol models.
Not all gas fireplaces are created equal.
No you don t need a masonry chimney but for your most efficient gas units you will need a venting system though it does not always require venting through your roof.
With wood burnign fireplaces you know quickly if the chimney is not open because of smoke in the house.
This is so that it can both take in air from the outside and then vent out the by products from the flames inside the fire box.
Some are fueled by natural gas or propane gas.
Ventless fireplaces are standalone structures that function off natural gas propane alcohol based gels or electricity but do not require a vent or open chimney flue to heat a room like.
Some are yellow flame or blue flame.
When possible an existing chimney is used to run a new flue but.
This saves wall and floor space.
Ventless gas fireplaces produce enough heat that they could conceivably serve as a secondary heat source for a small space.
Gas fireplaces however produce carbon monoxide which you cannot see or smell.
Appliances fueled by natural gas or propane may not produce the visible soot that appliances burning other fuels do but they can deposit corrosive substances in your chimney.
Vented gas fireplaces are not as flexible as ventless gas fireplaces in order to install a vented gas fireplace you must use a chimney or an exterior wall.