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Vent-Free Gas Logs
Unlike vented gas logs, vent-free logs do not require a chimney. In addition, almost 100% of the heat produced remains within the home, making this an extremely efficient option. When considering the vent-free gas log, it is important to know that a few states do not allow this type of option, which includes Alaska, California, Colorado, Massachusetts, Minnesota, Montana, and Utah.

The vent-free option has a feature called an Oxygen Depletion Sensor, ODS. Whenever the oxygen level in the air drops below what is considered a safe level, the ODS cuts off the flame. While this problem does not happen very often, this is a great safety feature. A terrific benefit of a vent-free gas log is that they can be burned in either a regular wood burning fireplace or a prefabricated vent-free firebox with no chimney. In addition, vent-free logs do not require the damper to be opened.

Vented gas logs produce a yellow flame while vent-free gas logs produce a blue flame, are designed to produce far more heat, and burn cleaner. Many people feel that the blue-flamed fire is not as appealing as a yellow-flamed fire but keep in mind, the main determining factor between the two types has to do with the amount of heat produced. In general, when it comes to sensibility and the best option for heating your home, the vent-free gas log wins. Best of all, the operating cost is only a few cents per hour of use. Keep in mind that vent-free gas logs do not need electricity and therefore offer a perfect solution during bad weather and power outages. Many fireplace professionals will tell you that the vent-free gas log is the most realistic and safe choice you can make. However, before you make your final decision, here are a few other considerations:
  • If your home is not well ventilated, you may need better ventilation before your vent-free gas logs are installed.

  • If you have other appliances that burn fuel, they are using the inside air as a means of combustion. If the vent-free gas logs will be located in close proximity to any of these other appliances, you will need to ensure there is appropriate fresh air in order to support all of the appliances.

  • Homes located at high altitude (above 4,500 feet above sea level) such as Colorado often have trouble with the pilot light going out because of low atmospheric pressure.

  • For bathrooms and bedrooms, there are limits to the number of BTUs that can be handled. For bathrooms, the limit is 6,000 and for bedrooms, 10,000.
Vent-free gas logs are now beautifully designed to look just like real wood. Now you can come home, sit back, and relax in front of your cozy fire.

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