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Are Ventless Gas Fireplaces Safe? Ventless gas fireplaces emit dangerous and noxious gasses into the room they are operating. ... In addition to carbon monoxide, ventless fireplaces also produce a high levels of water vapor.

Quick Answer: Most states except for California and New Mexico allow installation of vent free gas logs. Califoria does not allow any ventless gas logs or heaters inside the home.

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Answer: Without contacting the manufacturer of your fireplace it wouldn't be recommended to convert a vented gas fireplace to a ventless gas fireplace. The fireplace is rated for 22,500 BTU'S vented, where 20% of the heat is lost through the vent.

The study also found higher-than-recommended levels of nitrogen dioxide, a pollutant that can irritate the lungs. Because of CO safety concerns, ventless gas fireplaces are banned in California and Canada.

Ventless fireplaces are more energy efficient than vented fireplaces because no heat escapes up the flue, so you'll save money on gas utility bills. A vented gas fireplace uses more gas to create the same level of warmth because some of its heat escapes through the flue.

In fact, a faint gas smell is an unavoidable consequence of using gas fireplace logs. ... In a gas ventless fireplace, oxygen is provided by the air in your home. If that air contains impurities, those impurities are drawn in with the oxygen and can produce odors which are amplified by the flame.

Without proper ventilation and safety systems in place there can be serious health risks associated with burning gas in a ventless fireplace. Ventless fireplaces produce small amounts of nitrous dioxide and carbon monoxide which can be deadly in large doses.

The best way to prevent odors in a gas fireplace is to improve the quality of air in your home. If you smoke, take it outside. If you have pets, vacuum regularly and consider investing in a room air purifier. Avoid the use of harsh cleaning chemicals and plug-in deodorizers.