Are Ventless Gas Fireplaces Safe? Ventless gas fireplaces emit dangerous and noxious gasses into the room they are operating. ... Ventless fireplaces produce small amounts of nitrous dioxide and carbon monoxide which can be deadly in large doses.

Do ventless gas fireplaces give off carbon monoxide?

According to the National Association of Certified Home Inspectors (NACHI), even though ventless fireplaces greatly reduce toxic fumes, they will still release some small amount into the home, which increases the risk of exposure to carbon monoxide.

Can a ventless fireplace make you sick?

One of the greatest risks of using a ventless fireplace is that of carbon monoxide poisoning, which can be deadly inside your home. Specifically, carbon monoxide is a colorless and odorless gas that, in high enough concentrations, can lead to serious health problems such as: nausea.

Which is better vented or ventless gas fireplace?

It all depends on your needs, but vented sets have a more realistic flame and can be used in an existing real wood fireplace, while ventless logs are more efficient. A gas fireplace makes a great alternative for homeowners looking for a supplemental heat source that also provides a beautiful ambience.

How long can you run a ventless gas fireplace?

For one, these ventless fireplaces aren't meant to be installed in bedrooms or rooms without ample square footage. Guidelines also advise that they shouldn't be run for too long (typically no more than two hours).

Vented or Ventless Gas Fireplace (which one is better?)

30 related questions found

Are fumes from gas fireplace harmful?

Gas fireplaces are generally considered cleaner than traditional wood-burning fireplaces, but they can also pollute indoor air quality if not properly vented. Toxic gasses emitted include deadly carbon monoxide and nitrogen dioxide -- a gas particularly harmful to those with asthma.

Why does my ventless fireplace smell?

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.

How efficient are ventless gas fireplaces?

The unvented gas fireplace keeps all of that heat in the house, which is how they claim 99.9% efficiency. The only loss is from the little bit of incomplete combustion that happens.

Do ventless fireplaces have glass fronts?

The direct vent fireplace needs a glass panel in front of the unit for operating efficiency and to keep the combustion system protected. Meanwhile, vent-free eliminates the need for venting. This type of unit draws air from inside the home and burns efficiently.

Do ventless fireplaces smell?

Ventless logs do in fact produce an unmistakable odor, some more so than others depending on the quality of the brand. There is no way of preventing this, it is simply the nature of burning gas in your home without exhausting the fumes up a chimney.

Is it safe to sleep with gas fireplace on?

Is it safe to sleep with a gas fireplace running overnight? No, you should not leave your gas fireplace on overnight as you risk carbon monoxide poisoning. Although it's never recommended, if your gas fireplace has been properly maintained and designed to run continuously, it may be safe to leave it on.

How do you vent a ventless fireplace?

Answer: Unfortunately, there is no way to convert a ventless fireplace into a vented fireplace. Ventless fireplaces are not designed to have a vent added to them. Your only alternative is to tear out the existing ventless fireplace and replace it with a vented fireplace.

Does a ventless fireplace need a blower?

Yes, you can run your fireplace without a blower. Since the blower is on the unit's exterior, it does not affect the unit's fuel efficiency or drafting. It is a tool to help circulate the heat and provide warmth further into the home.

How do I stop my ventless gas logs from smelling?

Vacuum up pet hair and dust to prevent the smells from concentrating around your fireplace. A room air purifier will also help to clear the air. Also, if you smoke, it's best to do so outside to prevent residue from accumulating around your fireplace. Plug-in deodorizers and harsh cleaning chemicals should be avoided.

Do ventless gas fireplaces need electricity?

Electrical components within modern day gas furnaces are important for safe operation, though they also hinder use of your unit in the event of a power outage. However, ventless gas fireplaces can operate without the use of electricity during an outage by simply lighting their pilot light.

How can you tell the difference between vented and unvented gas logs?

Follow the gas line from beneath the logs to where it disappears in the wall or floor. If the gas is merely contained by a simple gas line, then the logs are vent free. If there is a small cylinder attached to the gas line, then the logs are vent-free.

Can you put a TV over a ventless gas fireplace?

The short answer is – yes. However, to ensure your television isn't damaged from the heat, care must be taken to ensure heat generated by the fireplace is redirected away from television.

How much does it cost to install a ventless gas fireplace?

Ventless inserts for a gas fireplace can cost you $2,000-$3,500 for the unit itself; installation can cost an additional $200-$1,000.

Do you need a chimney for a gas fireplace?

Ventless fireplaces fueled by gas or propane rely on indoor air for combustion, and they exhaust a low level of their combustion gases into the room in which they're located. A chimney or flue isn't necessary. ... In fact, ventless fireplaces generally are just for aesthetics and supplemental space heating.

Is it cheaper to run furnace or gas fireplace?

Operating a furnace for one hour at 75,000 -100,000 Btu cost a homeowner $1.12 - $1.49 based on last month's national average natural gas rate. By comparison, a natural gas fireplace running at 30,000 Btu per hour cost only 45 cents.

Are gas logs ventless?

Ventless gas logs are extremely efficient and will provide an exceptional amount of heat for your room. They don't require a chimney or venting, allowing all of the heat produced to circulate back into the room, rather than escaping up the chimney. Ventless gas logs are designed to achieve a clean, smokeless flame.

Can gas fireplaces cause headaches?

#3 The smell of burning gas

The smell of burning gas can cause sensitivity, headaches, and other issues in some people. This can especially be the case with vent-free gas logs. These types of logs don't have a chimney or vent to remove the fumes produced by the fire, so the smell is typically stronger.

How do I know if my gas fire is leaking carbon monoxide?

12 Signs There Is Carbon Monoxide in Your House

1. You see black, sooty marks on the front covers of gas fires.
2. There is heavy condensation built up at the windowpane where the appliance is installed.
3. Sooty or yellow/brown stains on or around boilers, stoves, or fires.
4. Smoke building up in rooms.

Do ventless fireplaces cause headaches?

It can cause all sorts of health problems ranging from mild headaches to death. If you decide to install a vent-free gas fireplace do yourself favor and install multiple carbon monoxide detectors in your home, including near the fireplace. Check them regularly.