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Natural Gas Fireplace Inserts

Discover the incredible energy efficiency and convenience of the natural gas fireplace insert. We’re proud to feature these uniquely effective inserts from the industry’s biggest names. Best of all, we bring them to you at prices that won’t leave you feeling burned.

You’ll find direct vent model fireplace inserts as well as the amazingly productive ventless models. These natural gas fireplace inserts are available in a giant array of styles and sizes, too, so everyone can find exactly what they want. You truly do get the best of both worlds with these amazing natural gas fireplace inserts.

By Cindy from Skillman on September 29, 2013
How do we get our insert installed after we purchase it?
By Collin C. - NFI Master Hearth Professional on September 30, 2013

Answer:
In order to install the insert, you will need to contract a local contractor, NFI technician, or HVAC professional to do the work. I recommend checking with a few local businesses to verify they are familiar with that type of installation first.

By Doug Kahn from Vernon Hills, IL on November 18, 2012
We have a natural gas fireplace that does not give off a lot of heat. We are thinking about getting a natural gas fireplace insert. Would that give us more heat? Right now there is a metal covering on the fireplace with two glass doors. Would we leave that on as a covering or would that be replaced with an insert?

I wanted to see what our options were for inserts. How would I measure the opening to see what inserts you have that would work with our fireplace measurements (because there is a covering on the fireplace now)? We have a chimney now were it vents to.

Do the inserts you sell have blowers on some of them? I saw you have both direct vent and ventless options - since we have a chimney, would we get a direct vent? Can homeowners install these inserts themselves?
By Collin C. - NFI Master Hearth Professional on November 19, 2012

Answer:
Per your description, it sounds as if you have a true masonry fireplace with a glass door enclosure added. In order to take accurate measurements of the fireplace, you would need to measure the front and rear width of the fireplace opening, as well as the depth.

Because you have a functioning chimney, you would be able to use either a direct vent or vent free insert. Vent free units are more efficient and give more heat, however some people can be sensitive to the smell they produce. Direct vent inserts draw all of their combustion air from outdoors, as well as vent their exhaust to the outdoors.

By Mike from Anchorage, AK on July 12, 2014
I teach a class for a local college. I have never installed any of the items you sell so I personally am not at all familiar with the process. I am going to be covering venting in an upcoming class and hope I can ask a question or two from folks who obviously know far more than I.

I heard years ago from a friend in the field that you can not simply stick a gas-fired insert into an existing fireplace, that you must run a vent off the gas fired unit up through the chimney. And I see that you sell vent kits and chimney liners for that purpose. Could you help me out and explain the reasons for that and what the considerations are for this. Thank you so much for your time.
By eFireplaceStore on July 14, 2014

Answer:
In regards to B vent inserts, which draw combustion air from the room, the primary reason it is a requirement to line a chimney is because of the relation between the size of the chimney and the buoyancy of the flue gases. If a chimney is over two times the size of the flue collar cross section, the flue gases will cool rapidly enough that stagnation of the gases within the flue can occur. This leads to a blockage of the gases, causing possible spillage of additional flue gas into the room. At the very least, flue gases may escape from the chimney, but they will begin to condense on the walls of the chimney before they escape, causing moisture damage to the appliance as the condensation drips onto the unit below. By using a liner sized to the flue collar on the appliance, flue gases remain hot and will escape from the chimney with more velocity, ensuring the appliance operates as it should and spillage does not occur.

Direct vent inserts are sealed to the room by a pane of tempered or ceramic glass. These systems use a pair of aluminum liners, which are usually 3 inches in diameter. One liner draws combustion air from the outdoors, while the other vents exhaust gases. The exhaust liner must run the entire length of the chimney for the same reasons as the B vent inserts, save for the fact the spillage will not occur, due to the fact that the unit is sealed. However, if exhaust gases cannot escape, the burner inside the unit will be smothered and cause the flame to extinguish. Likewise, the sources of combustion air and exhaust must remain isolated from one another from beginning to end, as to prevent any issues with mingling of the gases. I exhaust gases are allowed to leak into the incoming combustion air with sufficient quantity, the flame can once again be smothered.

By John Van Vorst from Evansville, IN on December 6, 2012
I have a Majestic fireplace model MBUC (new in 1997) and since the day we bought it the fans have been loud - so much so that we never use the blower. I would love to finally resolve this. There are two small fans in the bottom that are just too loud. Is there a replacement for these that may be quieter?
By Collin C. - NFI Master Hearth Professional on December 6, 2012

Answer:
This was a common complaint with this particular fan kit and Majestic has since moved away from the impeller fan design and is now using a squirrel cage version. Unfortunately, the fan kit you have, known as the UFK, has long since been discontinued and does not have a direct replacement.

It is possible to retrofit a newer fan kit into this unit, but it would require cutting the sheet metal mounting brackets for the old fan assembly.

By Joanna from Mt prospect il on March 25, 2014
I currently have a wood burning fire place and would like to replace it with a gas or other option fire place. Can you tell me what type you recommend?
By Tyler M. - NFI Certified Specialist on March 25, 2014

Answer:
A direct vent gas fireplace insert is a good option to install inside your existing fireplace. These inserts provide good supplemental heat while providing a nice, realistic flame. We have both traditional styles with a log set and more contemporary models with fire glass. Please see our full selection below:

Direct Vent Fireplace Inserts

This inserts are installed inside your existing firpelace and must use co-linear (side-by-side) aluminum vent liners (3"/3" or 3"/2" diameters) all the way up to the top of your existing noncombustible chimney. Please reply with your fireplace dimensions and preferred style and we can offer some specific suggestions.

By Frank Moroney from Long Island, NY on December 10, 2012
How do I measure the interior of my fireplace to get the correct size insert?
By Tyler M. - Fireplace Specialist on December 10, 2012

Answer:
We need your full fireplace dimensions (front width, rear width, opening height, depth, etc.) as well as what type of insert you need (full-bodied direct vent insert, full-bodied vent-free insert, vented gas log set or ventless gas log set) and your fuel type (natural gas or propane).

Also, please let us know if your existing fireplace is a brick/masonry unit or a steel (manufactured) model. With this information, we can provide some recommendations for your application.

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