gasification wood boilers

Welcome to the Boiler room, vju.

My usual knock on combination wood/oil boilers probably doesn't apply to the Tarm 2000 since, according to our Webmaster, the wood side is basically a gasification boiler, or at least is as clean and efficient as one. That eliminates the one danger of a combination boiler that vents into the same flue, i.e., that if you have a chimney full of creosote and you switch over to oil without cleaning it, you could have a serious safety issue. A clean-burning boiler shouldn't produce creosote.

However, you're kind of putting all your eggs into one basket (or welded pressure vessel) with any combi. If the boiler springs a leak at some point, you don't have a backup. This may or may not be enough to overcome the necessity of installing another chimney or a powervent arrangment for the oil side. You don't need a special boiler--just a power vent kit that allows you to vent the exhaust out of the side of the house or basement. They're not all that expensive, and can be mated to a basic oil boiler, which is all you would need or want for a backup. Plumbing wise, putting in two boilers at one time is not much more difficult or expensive than putting in one, when you get right down to it.

As to the relative merits of different boilers, who knows? The Tarm has a 20-year warranty, but I believe it's fairly limited when you get beyond 5 years, which is what the EKO and Economburn offer. They're all good quality equipment.

I can burn green wood in my EKO, but I wouldn't want to and wouldn't recommend it. You can burn biomass other than wood in all the gasifiers you mentioned, though I think Wood Gun gives you the option of rigging up a hopper or some other feed system to make it easier than shoveling the stuff into the firebox. For occasional/emergency/curiosity use of things like pellets, corn cobs, nut shells, etc, I doubt it would worth spending the money on the upgrade. But I say that without the benefit of any experience or details.

Efficiency claims are all basically theoretical under actual battlefield conditions. I wouldn't get too carried away trying to compare them. Actually, the EKO claims 91 percent efficiency compared to 87% for the Econoburn, but you won't notice any difference among the brands we're talking about, I'd wager.

I would somewhat disagree that the Tarm is not efficient on oil. Certainly it cannot match the top of the line stand-alone oil boilers, but it uses a completely separate combustion chamber and a different series of firetubes. It also, as you mention, uses only one 6" flue.

I would question claims from one manufacturer or another about burning green wood or more efficiently. These boilers are not rocket science - you can look at the combustion designs and see the basic similarities.

I'll let others chip in here, as my main area of expertise is the Tarm units since I formerly imported them (I sold the company to the current owners).

Did you say a Tarm is 11k now? Then they went up a lot in two years!

I have no experiance with a combination unit, though I looked at an oil option on a CB that I almost bought. Just my uneducated opinion, I'd get an inexpensive oil burner and a good wood-fired hydronic unit. a/k/a "Do as I say, not as I do"

Wondering, where do you guys come up w/ these prices for the Eko?

The reason I ask is according to the sales literature, an Eko 40 should be around $6,500.00 plus shipping. I can't even get one shipped to NH for $5,600.00

I've been told that Eko will be coming out w/ a 20 limited warranty just like everyone else in the industry.

solarguy said:

Wondering, where do you guys come up w/ these prices for the Eko?

The reason I ask is according to the sales literature, an Eko 40 should be around $6,500.00 plus shipping. I can't even get one shipped to NH for $5,600.00

I've been told that Eko will be coming out w/ a 20 limited warranty just like everyone else in the industry.

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http://www.cozyheat.net/eko.htm I think it is the latest, looks like the price keeps going up with the dollar.
leaddog

Installing them at the same time is the way to go, I think. You can get everything matched up and working together. Go with a parallel arrangement if you decide to go the two-boiler route.

Pricing can be funny and it pays to shop around, especially when shipping is involved with machines weighing 1,500 or 2,000 pounds.

I can't speak for any other brand because I only did my homework on the EKO line after I decided that's what I wanted, but you have a situation where you have an importer (New Horizon) selling direct, and also supplying several dealers who compete with the importer and each other. I found a big disparity in pricing on the 60. Some dealers charge extra for shipping and some don't. I think Tarm is only sold by the distributor, so what you see is what you get. And there are EKO dealers in Canada, some of whom may ship to the U.S., although I have no idea whether they actually do or not.

One thing is for sure--the weak dollar has inflated prices across the board over the past year by a considerable margin.

Tarm is sold thru a network of dealers, but Tarm protects it's dealers.

Beginning to sound like Eko doesn't protect it's dealers & that sucks because
we just became a dealer.

I think they do, actually. When I was shopping I called a dealer and got a quote and then called Zennon and tried to get him to give me a quote. When he found out I was talking to a dealer, he was happy to give me information on the boiler, but not a quote. Which I found to be admirable. And maybe they won't quote systems in other dealers' territories--I really don't know.

And you're right on the Tarm dealer network. My mistake.

Speaking of "dealer protection", this is almost impossible for most central heating units, simply because not enough dealers usually want to carry them. Back when we owned Tarm, very few dealers were interested - the P&H;guys were into oil, and the stove dealers were into gas. It would be one thing if a brand had 200 dealers or something like that, but most don't.

Now that there is a sudden renewed interest, the dealers (of course) want territory. But for an important or manufacturer with millions of dollars in inventory and investment, that is a tough wish to grant unless (and until) those dealers have a track record of moving lots of units.

That was good to hear Eric, thank you.

That's the sad part about this whole industry Craig.

Most manufacturers only care about moving product & I feel most really
don't care who moves their product as long as it moves, the greed factor.
Look at the OWB world. Most of those dealers are landscapers,
tractor dealers, mobile home salesmen & lumber yards.
What do they know about heat?

I wouldn't go to a plumbing supply house to buy a tractor.....

The market is a funny place. As I said, when I sold wood boilers all the "good" dealer were missing in action. They said it was too much trouble (too much education) to sell boilers like ours. That is also why the OWB's were sold by fence companies....because no one else would sell them!

So it's not the manufacturers fault - any maker HAS to sell things where and when they can. I would have loved to have 100 dealers selling Tarm, but we probably had 10 decent ones in the whole country...so what the heck to do? Were we supposed to give them territory? (we did with maybe 3 of them, who actually displayed products).

So, again, I think you will find most of the high quality units having high quality dealers and sending customer leads to them. But the day of the customer only having one choice of where to buy a product is mostly over...and that is probably a good thing. Any dealer with the skills to deliver, spec and install these units is probably not going to have a problem getting work. Not too many people are familiar.

vermont jotul user said:

I've been looking into a wood boiler for our 2000 sq. ft. fairly well insulated house, so I was very interested in the discussion involving the relative merits of the TARM, EKO, Econoburn etc.

...

Speaking of flues, the Econoburn and the Wood Gun seem to require a 8" flue. Now it's not impossible that we could add another flue, even an 8" flue. After all the Econoburn is made in the USA, and makes claims of higher efficiency than the others. They also claim that it can burn GREEN WOOD! I'm not sure I really believe this.

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Econoburn is the "Cadillac of wood boilers." They aren't cheap, but they are one of the most impressive boilers on the market.

The flue outlet is 8" on all models for simpler manufacturing. The folks over there are very responsive and I've already spoken to Mark (one of the VP's) about getting the manual to explicitly state that installing a reducer immediately at the flue collar is acceptable. 6" is fine for the smaller model. As long as it says that reducing is acceptable, in the manual, then code allows it. So, that should be fixed, soon.

You can burn green wood. It won't hurt the boiler. But it will take some of the energy (heat) to steam out the water, so you will reduce your efficiency. I wouldn't recommend it.

What are you planning to use for radiation? Radiant, baseboards, radiators?

Joe

vermont jotul user said:

bht: we'll be using baseboard. I have to say the Econoburn does look like a very impressive unit, although I have yet to see one in person. Or to get a price quote for that matter.

In the end a lot is going to depend on convenience and my feel for the dealer. In that respect, so far the TARM is winning. Literature was sent out the same day I called and arrived before my visit the next day! In my visit I was very well treated by a very knowledgeable salesperson, and at 45 minutes away, I can drive up and get a unit plopped in my pickup. Getting it out may be a different story! :lol:

In contrast, my contact at EKO has yet to send the promised literature...

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You should get a pretty timely response from Econoburn. If you contacted them and have not heard back, drop me an email with your info and I'll make sure that they get jumping on it. They were just at the expo in Boston this past weekend, so they might be slightly behind on the return calls as a result.

If a road trip to southern Maine is something you feel up to, I can arrange to show you one in operation.

Joe

i just faxed econoburn today for prices on the 100 and 150. we will see how long it takes to get an answer or reply.
the boiler does look good to me very similar to eko maybe more refractory to dry the wood in the top chamber.

rsnider said:

i just faxed econoburn today for prices on the 100 and 150. we will see how long it takes to get an answer or reply.
the boiler does look good to me very similar to eko maybe more refractory to dry the wood in the top chamber.

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I was actually just chatting with them earlier today regarding heat storage systems, so I mentioned your fax. They tried to send you a reply, but couldn't get through on the fax number they had for you. They forwarded me an electronic copy of the letter they tried to fax to you; if you'd like, I can email it to you. If not, I'd suggest giving them a call and making sure that the fax number didn't get garbled or something.

Joe

that would be great thanks ryan