Wall Air Vents For Gas Fires
This is not the official energy efficiency rating of the fireplace that is 100 the sap rating of 90 is greater than any other style of fireplace when installed in a new build property.
Wall air vents for gas fires. Air vents for flueless gas fires and stoves. One to get rid of the combustion products which are very dangerous. The major price difference between the two types of fireplaces is with venting. Entering while allowing a measured amount of air to enter the room either for background or for combustion purposes.
Gas fires less than 7kw no air vent chimney precast flue liner cvo fire 2020 05 07t23 26 00 01 00 chimney gas fires 7kw. One that expels gasses and another that draws in fresh air from the outside. Unless you have a special type of flueless fire. Superior fires air vents are a necessity to have a complete fully functioning flueless gas fire or gas stove.
The regulation states that due to the air vent in the same room as the appliance the gas fire must be rated at 90 not 100. You need another to supply fresh air to the fire to get correct combustion. However many direct vent fireplaces are vented with a single two chamber vent pipe. The purpose of a ventilator is to protect from rain vermin etc.
On a normal gas fire you need two vents. Direct vent gas fireplaces require two vents in the back.