Tjernlund Auto-Draft for Stove Draft Problems, Model# AD-1
I purchased this item several yrs. ago due to poor draft issues and smoke back-filling into the room when I added wood to my stove. It has completely solved my issues. Just turn it on before opening the door then add the wood and turn it off. It also makes it very easy to start a fire with wet wood or very few coals! Installation did require a few minor modifications though. Since the mounting surface of the product is flat and the pipe is round, I simply reduced the angle of the mounting flanges to less than a 90 degree. There will still be some cracks between the flanges and the pipe, but a little high temp. silicone and high temp. paint will make it look as though it were made for 6" round pipe.
April 24, 2013
Solved draft problem
I bought this product because I install a too small flue on a coal blacksmith forge and to cost to redo it was substantial. The Tjernlund AD-1 unit solved my problem with a smokey shop at less than half the cost of new stove pipe. The unit was easy to install and wire, just follow the instructions.
May 7, 2012
A good product
I purchased the Tjernlind Auto Draft because of the problems I was having with smoke escaping from my wood furnace when refueling. Now, I am thrifty (cheap). I thought long and hard about this but finally decided to buy the device. Boy, am I pleased. It does a great job of adding the increased draft I needed to add wood or get the fire going quickly. I have already recommended it to a friend.
January 16, 2012
Works… but has some issues!
The quick review is it does improve the draft; it does eliminate the smoke exiting the stove when the door is opened; it will improve the burning; it does not compensate for a poor chimney or piping installation; it is not an easy install; the instructions are poor; you need some tools and some ability to work with metal; and I can find no reason not to buy it based on my longer review. I’ve used it now for several weeks and I’m a happy camper but reading the full review may be helpful.
I gave the Auto-Draft 5 stars solely for what it can do to remove smoke and that’s what I purchased it to do. However, I’d have to give it 3 stars for what you have to do to get it to work properly; the design flaws you must overcome; and the overall lack of design quality that will make it the problem after installation if you’re not handy and able to overcome the issues. I do cover them further in my review but, in summary, you will have holes the unit does not fill so there’s a natural draft that let’s smoke escape; you can’t properly fit a flat piece of metal against a curved pipe; the motor does get very hot; and the control switch is all plastic that’s near a very hot source of heat. It is not meant to overcome a poor, or inadequate, chimney system but if you have trouble getting a proper draft and/or have smoke issues this was the best and most cost effective remedy I could find.
The pic shown for this item is incorrect. For the review to make sense you need to see the piece which fits into the pipe and it’s not shown in the pic so check the pic I added. The square flange should be seen on the top of the unit as shown so please check my pic before reading on. This is not something you purchase unless you have a problem and before doing so you should want to know as much as you can before you proceed so what follows is probably way more than you want to know but if it helps one person install it easier or think of other options I think that’s what the review process is all about.
It’s cold here on the high desert and there’s not much to do in the winter except try to stay warm. Friday nights are for watching a fire, listening to some loud music and downing some libation. We sit in front of a fireplace with a roaring fire and freeze our butts off and have to get up a lot to throw on another log. Fireplaces cause a huge draft and put a lot of heat up the chimney. Meanwhile, in the next room, there’s a perfectly good vintage Blaze King (BK) wood stove that cranks out some heat but does not have a glass door for fire viewing. The BK manual states you can remove the door, add a screen over the opening and convert it to an open fire. We tried that but smoke was a huge issue even after heating the stove up for an hour before removing the door. It wasn’t just the smoke it was also the black soot that was collecting on everything from the windows to the ceiling. If you can’t isolate the room your stove is in then the adjacent rooms form a draft… because they’re colder than the room the stove is in… and will draw the smoke in and up to the ceiling until the room fills with it. Seemed like a lost cause and it was back to the drafty fireplace. Adding a glass door would be easier but they’re hard to find for a vintage stove and since the stove is in excellent condition replacing it was not an option at several thousand dollars. Then I can across this item in some searches on smoke issues and, for the price, it was worth a shot because I knew I did not have any chimney blockage or defective installation.
I have lots of tools and over 50 years of experience using them and I found this install tough. It appears to me that the company has modified one of their existing items, the DJ-3 In-Line Draft Inducer made for furnace venting problems, by painting it black and calling it the answer to wood stove draft problems. That doesn’t quite work when you open the box, read the vague half page of instructions and start scratching your head. After a half-day to install it did work and the smoke issue was gone. The install was not easy, which I expected, and some remedial work was done to ensure it was properly sealed. I have discovered that the way a wood stove works with the door open and with the door closed are very different. I now have the ability to watch a roaring fire while getting lots of heat and no smoke. The good folks at BK are wrong in how easy it is to convert your stove from a closed unit to an open fire but this device did it. There are some flaws with it that, if not addressed, will make it tough to go back to a closed fire. I wanted my stove to also function with the door closed so I could also heat the house when I didn’t want to be in the room and not have to feed it logs constantly. Yes, an open door fire burns logs much faster than when it’s closed. With a closed door I can get through the night on half dozen logs because it burns longer and not hotter. The BK was not properly installed when we purchased the house and I had venting issues so over the summer I did a complete rebuild from the stove through the wall and into the chimney. It’s still not prefect but it’s the best it’ll ever be and this unit made it so.
With the door closed I do not have a draft problem. You can prevent most of the smoke from escaping by opening the door just a crack to let some air in to “liven up” the fire. It only takes it a few seconds to liven up and when you can see the flames, add another log and close it back up again. The natural burn process in a closed stove is slow and smoldering so when you quickly open the door all the way there’s a rush of air to the fire; the burn process accelerates quickly; a lot of smoke is generated; and it all comes out the door because that’s the path of least resistance.
January 16, 2012
Tjernlund Auto-Draft, Model# AD-1
I purchased The Tjernlund Auto-Draft for use in my large work shop. I have a heavy custum made wood stove that burns 4 foot long logs and was having problems getting smoke in the building. After purchasing and installing the auto-draft I no longer have any smoke problems. It is much easier starting the fire and once it is burning I can put in fresh cut green wood if I want and it will burn down to a fine ash.
The Tjernlund is worth much more than I paid for it. My wife says my cloths no longer smell smokey at the end of the day.
January 10, 2012
Disappointed and Warnings please read
After reading other reviews I really thought this product would help my draft issues. I have a split entry house and in the basement I put a wood stove in and ducked it thru the chimney that was already in place.
Here is my set up and issues: stove to chimney 2 foot pipe that goes into a tee then up to 6" Flex pipe to the roof. Once the smoke got the top of the house it was too cold for it to draft correctly, the clay brick was not warming up.
Installing it.... super simple if you dont like reading directions (one pager and a sticker) The blower is not marker which way in what so, I got it backwards at first time HA ( Glad I didnt light a fire) and the sticker does not remove easy, tape it on with masking tape or you will be scrubbing for a while. Once installed and fire going I found the the tee fitting leaked smoke everywhere so I had to seal all cracks. Once sealed, the blower itself leaked smoke around the housing ( only spot welded together) So I started to think this was prob caused by the tee pipe not giving the fan a straight shot out... So if you have a tee dont buy it, its a waste of 120 bucks.
December 20, 2011
Best thing I have bought as a add on for my wood stove.I never have a problem starting a fire in minutes ,no matter what the temperature is. Mystery
March 14, 2011
No more smoking fire-starting!
With a supplemental woodburner in our basement, we often experienced back-drafts allowing smoke to enter the basement, then it spread to the living areas. Once we purchased and installed the Tjernlund Auto-Draft, we have eliminated all the smoke so prevalent before. It was easy to install and works like a charm. We have lots of deadwood on our property, so we are saving on fuel, cleaning up the property and have a warm and toasty, albeit smoke-free home. Thanks, Northern and Tjernlund Auto-Draft!
November 23, 2010
this is a great product
iwould recommend to throw away the mounting clips and use tek screws instead. other than that it works and installs good
November 16, 2010
Very useful product
Purchased this to try to decrease the amount of smoke filling our house every time we filled our wood boiler. Despite the chimeny setup being as it should to draft properly, there were many days the smoke would billow out the boiler when opening the door. Installing this fan was extremely simple and has nearly totally eliminated our draft problems.
August 30, 2010