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By Ed from Shingle Springs, CA on October 3, 2014
I recently purchased a Harmon Accentra pellet insert. I plan on running a 4 inch SS flexpipe down my existing brick chimney. Do i need to insulate the flex pipe?
By eFireplaceStore on October 3, 2014

Answer:
Because pellet stoves rely on a combustion blower to initiate positive pressure in the liner, you will not need to use insulation. Unlike a wood insert, the flue gases do not have to be kept warm to maintain draft. The combustion blower will continue to push combustion byproducts, no matter how cold the air around the liner is.

By Todd from Lake Tahoe on February 7, 2014
What is the most economical way to vent a top vent wood stove insert up a masonry chimney?
By Collin C. - NFI Master Hearth Professional on February 7, 2014

Answer:
By far the most cost effective solution is a 304 grade stainless steel flex liner. We offer several kits of varying length for this application. An example is the DuraFlex 6 Inch Diameter x 25 Foot Long Kit of 304-Alloy Light Chimney Liner. This will include the adapter to connect the liner to the stove, as well as the support plate and cap.

By Rich Tomczak from P{ine Island, NY on January 9, 2013
I am looking for all fuel chimney pipe 8T36 208036 which I purchased at Master Plumbing in Vernon NJ. 10 years ago. They no longer carry it. Could you please help me locate this pipe?





By Collin C. - NFI Master Hearth Professional on January 10, 2013

Answer:
The manufacturer has confirmed that the newer 8UT chimney system has replaced the 8T system that you have now. The parts are virtually the same and are readily interchangeable. The exact part that is equivalent to the 8T-36 you are looking for is the MetalBest Ultra-Temp 8 Inch Diameter x 36 Inch Chimney Pipe Length. Please let me know if I can help you in finding any other parts for this system.

By Aaron from Leavenworth, ID on October 9, 2014
I need some information about venting a wood burning stove through a wood frame house wall with vinyl siding with 6 inches of outlet from the stove. What do I need to know?
By eFireplaceStore on October 10, 2014

Answer:
This type of installation will use a combination of single or double wall stovepipe and double or triple wall chimney pipe. Most commonly, black stovepipe will be run at least 12 inches off of the top of the stove before making a 90 degree turn to run horizontally toward the wall. The 12 inch height is the minimum, but additional height is always better. More height in the home will help the stove to establish proper draft and will cut down on the amount of chimney pipe you must use outside. Single wall stovepipe requires 18 inches of clearance to combustibles and is galvanized steel. Double wall stovepipe requires only 6 inches of clearance. While it is more expensive, the double walled pipe has a stainless steel inner wall and usually does not require replacement. As you near the wall, the stovepipe will use an adapter to convert to chimney pipe. A section of chimney pipe will then pass horizontally through the wall, using a thimble. Outside, you will need to install a chimney tee and tee support to direct the chimney pipe vertically along the side of the home. The chimney pipe must extend far enough above the roof to clear any obstructions or adjacent parts of the roof by 10 feet.

By Alex from NJ on October 3, 2014
I currently have a gas fireplace and want to replace it with a wood burning stove. Do they use the same type of flue pipe?
By eFireplaceStore on October 6, 2014

Answer:
They do not. Gas fireplaces will usually utilize a galvanized steel and aluminum vent pipe, while wood stoves will use a galvanized steel stovepipe in the room and then convert to double or triple wall stainless steel chimney. The caustic flue gases from a wood burning stove will degrade the aluminum piping used for a gas fireplace.

By Mike from Langhorne, PA on September 26, 2014
I just purchased a pre-owned LOPI model FL wood burning insert. Do you sell a modification kit to connect a chimney liner kit to it? The opening in the pictures is 8 inches. I need a 6 inch liner for the chimney.
By eFireplaceStore on September 29, 2014

Answer:
Because this is an older, pre-EPA insert, it was not designed with a direct connection to be made to the flue collar. The design required the insert to be installed into a masonry fireplace with a chimney liner that was already sized to the collar on the insert. The design of the damper and damper control rod makes it effectively impossible to install a collar or insert boot on the top of the appliance.

By Susan from Ashland, OR on December 6, 2013
I am looking for an ornate stove pipe trim collar. In a 7" size. Can you help?
By Collin C. - NFI Master Hearth Professional on December 6, 2013

Answer:
Unfortunately, we do not carry trim collars that have an especially ornate pattern. The best example we offer is the Snap-Lock Black Steel Stovepipe Trim Collar - For Pipes with a 7-Inch Diameter. Anything more ornate would likely have to be custom made, as 7 inch is no longer a common size.

By Pete from Indianapolis, IN on July 8, 2013
We have a Comfort Glow B42LI-M wood burning box. First flue liner needs to be offset elbow. Should inner liner go inside outlet on box or should it be outside?

By Stuart from Gloucester, Va on January 3, 2013
Do you offer an elbow 22 1/2 & 45 degree chimney pipe? I have a wood burning stove. The chimney pipe will run through a chase in a room with a cathedral ceiling. I need to put my cap off to one side.
By Kevin E. - Fireplace Specialist on January 3, 2013

Answer:
Unfortunately, not. Class A chimney is only permitted to offset by 30 degree elbows. If you'd like to reply with the brand of chimney pipe you are using, we'd be happy to match up an elbow kit for you.

By Ricky from Peoria, IL on December 5, 2012
I have a cast iron wood burning stove with a single wall 8" black pipe coming up about 3 feet. I also have a chimney system (consisting of two pipes), inside pipe also 8" and outside pipe 12 1/2" or 12 3/8".

What kind of adapter am I looking for? The pipe/chimney system will be a straight vertical run up through the roof of my garage.
By Collin C. - NFI Master Hearth Professional on December 5, 2012

Answer:
Based on the dimensions of your Class A chimney pipe, it sounds as if this is an air cooled chimney system. This type of piping is only meant to be used with specific types of open faced fireplaces. As such, there is not an adapter to mate it to 8 inch, single wall stovepipe.

It would be necessary to use a solid pack chimney system, such as Simpson DuraTech or DuraPlus. These systems use a ceiling support to make the transition between the single wall pipe and the double/triple wall chimney system.

By Darrel from Iowa on November 30, 2013
I want to put an oil furnace in my shop. This is a steel building with a wood frame. The side walls are concrete up to 8 feet & 5 more to 13 feet are wood frame covered with steel. The chimney will be going straight up through the roof. I live in Iowa. What pipe can I legally use? I want the least expensive as money is an object.
By Tyler M. - NFI Certified Specialist on December 2, 2013

Answer:
Your oil furnace likely requires class A chimney pipe, and we have a variety of such pipe available. Please see our full selection here:

Class A Chimney Pipe

If you want a quote for everything you would need, please fill out our Chimney Pipe Design & Quote Form.

By Michael from Statesville, NC on January 18, 2014
I have an older wood burning fireplace insert that I believe is from the 70's. I constantly could smell ash in the house even after I had cleaned out the firebox. I decided to pull the insert out from the fireplace and found most of the insulation around the insert was crumbled into practically nothing. After reading on the internet I've learned that I need a chimney cap, a liner/pipe, and new insulation before I reinsert the box as I have none of these items in my masonry chimney. I have several questions though. The top of my insert has an opening that is 5" x 10". This is 50 sq in so should I get a pipe that has an inside diameter with the same sq in (an 8" ID pipe)? I believe I need a Class A insulated chimney pipe for this application, but I don't know if I also need a chimney liner. Could you tell me? With 20' of chimney what brand would you recommend that would give good results but also be economical?
By Collin C. - NFI Master Hearth Professional on January 20, 2014

Answer:
You are indeed correct that installing a liner within your masonry chimney is the best way to proceed. Older inserts with rectangular or oval openings were usually designed to be used without a liner, as they released enough heat to the chimney that a liner was not necessary. However, degradation of the insulation and downdrafting can cause the smell of ash to be prevalent.

You are correct on the size of the liner, as an 8 inch diameter is nearly exact in area to your opening. When venting up a masonry chimney, only an insulated liner is needed. Class A chimney is only used in a free standing application where no masonry chimney is present. To adapt to the 8 inch liner, a boot adapter, such as the HomeSaver Cast-Iron Insert Boot for 8 inch Chimney Liner is needed first. You can then use a complete liner kit, such as the DuraFlex SS Stainless Steel Chimney Liner - 8 inch x 20-ft and the DuraFlex SS Insert Kit for 8 inch Chimney Liner. The secondary kit includes the adapter needed to connect the liner to the cast iron boot, as well as the top plate and cap for the chimney. Depending on the size of your chimney flue and whether it is built on an inside or outside wall, you may or may not need insulation for the liner. If you would like to elaborate on the size of the flue and its location, I will be able to assist you further.

By Deanna from Conicville, VA on September 17, 2013
What kind of pipe do I need to vent a wood stove through a wall? We don't have a chimney.
By Tyler M. - NFI Certified Specialist on September 17, 2013

Answer:
You can use single- or double-wall stovepipe to vent the stove up to your wall, then transition to double- or triple-wall class A chimney pipe to pass through the wall into a tee, at which point the pipe will then run vertically up alongside your home over the roof. For a complete quote, please fill out our Chimney Pipe Design & Quote Form.

By Michael from Hickory, NC on November 16, 2013
When using an oval liner, should the adapter be sized so that the liner fits over the adapter or inside of the adapter?
By Chris on November 17, 2013

Answer:
When using sleeves and adapters, the male end of the liner should always be facing back towards the unit. This allows condensation to run back inside of the appliance as opposed to down the exterior of the liner itself.

By Diana from Northeast Texas on January 10, 2014
I was given a Timberwolf 2100 as a Christmas gift. I am unsure of which chimney product is best for this stove. Can you give me a recommendation?
By Tyler M. - NFI Certified Specialist on January 10, 2014

Answer:
We recommend the DuraVent stovepipe and chimney pipe system. You can use DuraBlack pipe for a single-wall stovepipe installation in the room with the stove, then transition to double-wall insulated DuraTech class A chimney pipe. Or, if you prefer, you can use double-wall DVL black stovepipe before adapting to the DuraTech pipe. Please fill out our Chimney Pipe Design & Quote Form for a full estimate with everything needed for installation.

By Michael from Atlanta, GA on September 16, 2014
I have a wood burning stove that I want to put in my masonry fireplace. Do I need a stove pipe or can I just let it burn?
By eFireplaceStore on September 16, 2014

Answer:
To guarantee that you do not have any drafting issues, I recommend running a short piece of stovepipe or flexible liner up through the damper area of the fireplace and into the smoke chamber. This will help to establish draft and prevent any problems with smoke pooling, especially of the unit is burned on a low setting.

By Lawrence on November 9, 2012
We are looking for a chimney pipe for a fireplace in a modular pre-built home: 12” x 8” x 4’ silver . We live at 5600 feet elevation and our present chimney is 10’ high from fireplace to top, 4’ above roof. We have a problem with smoke in the house. We want to extend our chimney for better draft.
on November 9, 2012

Answer:
From these measurements, it appears you may have triple-wall solid-pack chimney pipe. Can you provide the manufacturer of your existing pipe, so we can check availability of a compatible 4-foot piece? We would also recommend adding an extended roof support piece, since your pipe will extend eight feet over your roof; an extended roof support is intended for use when the pipe protrudes further than five feet above the roof. Please reply with the manufacturer of your current pipe and we will be happy to assist you in finding the appropriate pieces.
By Mike from Clarkridge,AR on March 16, 2014

Answer:
I have a modular home too, 2002 model. They use FMI pipe. 8 inch stainless inner pipe and a 12 inch outer pipe. Hope this helps.

By Brian on November 9, 2012
What type of pipe do I need for a Wood Burner it has 8” opening out the back? I am planning on putting a heat reclaimer fan on the pipe coming out, so inside it will be single wall stove pipe. When it goes out my wall I know it has to be double wall, but once outside do I continue to use double or can I go with single wall again?
on November 9, 2012

Answer:
Yes, you do indeed have to convert from single-wall pipe to double- or triple-wall Class A chimney pipe once you get to the wall. We have all of the components to make this work for you. We will be happy to provide you a quote for everything you need. Just fill out our Chimney Pipe Design & Quote Form.

By Robert on November 9, 2012
Can I use pellet stove pipe for a small pizza oven that burns both propane and wood? This is not a super high temp. oven, only about 500 - 600 degrees.
on November 9, 2012

Answer:
If solid fuel is being burned, Class A chimney must also be used. Pellet pipe is simply not rated for use with solid fuel appliances. We'd be happy to put a quote together for you for this pipe. We would just need the details of the installation.

By Johnathan Brown from Lafayette, LA on December 19, 2012
I have the BC-42 Majestic wood-burning fireplace and I am unable to fine the flue pipe in my area. Can you help me?
By Tyler M. - Fireplace Specialist on December 19, 2012

Answer:
The Majestic BC42 Royalton Woodburning Fireplace uses the SK8 double-wall chimney pipe (8" inner diameter and 11" outer diameter), which we carry. All of the compatible chimney parts can be found in the "Venting Components" tab on each item's individual page. You can see one example of this pipe here:

Majestic 4-Foot SK Series 8 in. Diameter Wood Burning Flue Section


By Dan from TN on March 12, 2013
The house I've recently bought was built in the 1960s and has following problem: The existing chimney was damaged by a lightning strike, so the previous owners had chimney taken down and roofed over. I want a fireplace. Can I use an ultra efficient fireplace insert and a chimney stack similar to the ones used in mobile homes? Are there other options?
By Tyler M. - NFI Certified Specialist on March 12, 2013

Answer:
You would need to choose a zero clearance fireplace that utilizes manufactured chimney pipe from the unit to termination. If you want a woodburning fireplace, you will need to also get the appropriate class A chimney pipe, and it must run from the unit to at least three feet over the roof (maybe more depending on your roof pitch and the location of your roof's peak). If you want a gas fireplace, you can choose a direct vent model that can be vented and terminated horizontally.
For more information about the gas options, please see our Gas Fireplace and Stove Buying Guide.

By Craig from Hamilton on September 9, 2013
How long does a gas liner last?
By Collin C. - NFI Master Hearth Professional on September 10, 2013

Answer:
While longevity will depend on the amount or humidity in the flue gases, the typical liner can last for 20 to 25 years under normal conditions. In extreme circumstances where high humidity is present, the life expectancy can be cut in half.

By John from GA on July 26, 2013
I'm replacing a chimney on the roof which consists of a 12" chimney pipe enclosed in wood box covered with stone. I'm going to just use a free standing pipe through the roof. It will need to extend about 7' and will be on a sloped roof. What components would I need for this application?
By Tyler M. - NFI Certified Specialist on July 26, 2013

Answer:
We sell a few different brands of class A chimney pipe, all of which must be used only with its own other components. For a 12" inside diameter, we only carry DuraVent's DuraTech brand pipe. You will need to identify the manufacturer or model information of your existing pipe before ordering components.

Chimney pipes and chimney liners are critical parts of keeping your fireplace and your home working safely and efficiently. We offer chimney pipes and chimney liners to fit any home's needs that protect your chimney, prolong its life, and make sure you get all the function out of your fireplace or gas appliance it was intended to provide. Your chimney is an important part of your home; treat it right with chimney liner and pipes from here in our chimney store.

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