Homemade Boiler Exhaust Gas Heat Recovery off Flue from a Furnace Used for Space Heating

Mikey Pipes - Pipe Doctor Plumbing & Heating & Air

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YOU MUST OF BEEN AN ENGINEER! Only an engineer would take a furnace heat exchanger with inducer motor assembly and build a homemade boiler exhaust flue gas heat exchanger to heat a room next to the boiler with ductwork! Epic idea - yet completely dangerous!
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Опубликовано:

4 окт 2024

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Комментарии : 100

@thefathvacguy6341 Год назад

Thanx for the shout out....she heard her name and turned her head like who is talking to me.. she is blind so she can't see your videos but she listens closely... Thanks for saying Hi to my baby girl

@CamMacMastermusic Год назад

Awesomeness!! A very heart warming exchange. All the best to all.

@salvhockey Год назад

I've seen coil wrapped around the exhaust pipe and also waste pipe

@mattwittneben443 Год назад

That was awesome. You made that girls day. Mikey Pipes wears 2 pounds of gold but also has a heart of gold.

@fatcat-hc4pj Год назад

Pretty ingenious idea we used have a magic heat heat exchanger on wood stove

@shahsmerdis Год назад

Humble shout out to the viewer . ♥️♥️♥️

@nathanbauer482 Год назад

I just had this on a 60 year old American Standard with a Magic Heat fan and this was it's purpose!

@johnwalker890 Год назад

Good job Mike and Peter, put some roll out and spill switches on it and see how it works, I wouldn't recommend using it though, Peter is getting better at naming the parts list, Keep going Pete. And God bless that girl with the health issues, I know how it feels, I have my own health issues myself. Good job again, hope you get the install.

@williamdwyer3302 Год назад

one of the best heat reclaimer ive seen.i like watching newbe's try to change the spring coulping's on the taco 110,shower time.

@mikerefrigeration5736 Год назад

Daniel is a very nice kid. He seems like the type of kid you want to be 2nd in command in your company

@davidpetersen7091 Год назад

Mike, They have been doing this with wood stoves for years. Mr. Pete----------> aging hippie

@kangaroogod Год назад

Brush/blow that heat exchanger out, clean burners and open air shutters and it’s good for another 40. Co will drop and adjust o2 to 7ish

@peterking1134 Год назад

My father built one of those heat exchangers years ago. It was made of copper pipes with the air blowing through the copper. It provided heat to the basement.

@10minutenewhampshirebreak77 Год назад

In the 70s my father installed a diverter on the dryer vent, used a nylon sock to capture the lint. I’m pretty sure he purchased it from the hardware store.

@chadschafer1723 Год назад

He also had 90 percent humidity in the basement and most likely mold. But hey it was warm

@10minutenewhampshirebreak77 Год назад

I don’t remember any mold, but the sock used to break and there was a lot of lint stuck on the rafters. I’m amazed that there was never any issues with it. He’s 90 and still lives in the house, I’ve made sure everything is now safe. He doesn’t go into the basement anymore. Thanks

@throttlebottle5906 Год назад

that and other lint trapping buckets worked fine hooked to dryers in winter, BUT only to be used on ELECTRIC DRYERS! otherwise you're CO gassing yourself. the additional indoor humidity is usually needed in winter and would disperse throughout the whole home anyway(older homes were drafty and not sealed well)

@mitchdenner9743 Год назад

Testo is right in new joisey. Very nice people over at testo. Excellent customer service.

@rickw4160 Год назад

Yes. Easy enough sensor add on. The only issue you have to contend with is that it is possible to remove enough heat to slow down exhaust gases in certain circumstances.

@donaldclark1872 Год назад

Good job Peter!!

@Jimbobo162 Год назад

You gotta do what you gotta do with these high energy prices thanks to FJB

@claudenewman3440 Год назад

The original high efficiency heater

@rustyshakleford5230 Год назад

I come across them from time to time mainly on oil boilers but only around Schenectady NY. There must have been a guy who sold them back in the 50s-70s.

@andrewsexton2247 Год назад

Dang Mikey if that old rust bucket ever gets ripped out I want that emblem. Have a huge collection of old emblems off old systems and that one is awesome

@AnthonyCelata Год назад

I have a heat exchanger on my flue pipe and I'm able to take a ton of heat out of the stack. So much so that I had to add a power vent on my chimney. Once a year I spray a baking soda and water solution down my chimney to combat any acid that may form since now my chimney temp is totally out of whack. I use significantly less oil. My basement is finished and that's where I have my office so I just dumb the heat straight into the basement and let it rise. Certainly do NOT attempt this if you don't understand the risks. You should get rid of combustion heating anyway. A heat pump is far more efficient especially if you go ground source.

@PipeDoctor Год назад

Very very smart!!

@busman2000 Год назад

Well I have seen something doing the same thing. It was in the 1970's and it was called "Wonder Heat" It was a solid fuel (wood burner) that one would place on the cavity of your fire place. What was unique about it was . There were two 3.5-4" square tubes placed paralelle and on a 70 degree angle from the bottom of the fire box to the top inner edge of the unit ( all completely seam welded ) so no smoke could enter the room, but they would convect the room air at floor level which was drawn in to the space heater and the fire inside would thus heat these tubes, which inturn drew in more air into them (not the fire box). With very little wood you couldn't stand up infront of the thing in ten minutes time as it threw out so much warm air. However it was perfectly safe and warmed the average home in no time. If I can find schemeatics I'll post them.

@hughholt121 Год назад

Back in the day you could buy a heat recovery unit from Sears to add to the flue pipe on their wood burning Stove /fireplace. It captured the heat from the flue pipe and blew it around the room.

@Guillotines_For_Globalists Год назад

I thought they might still sell those for wood stoves?

@arielhernandez2911 Год назад

That’s crazy I’ve never seen that the oldest thing I’ve seeen was. A coal boiler and a coal furnace

@throttlebottle5906 Год назад

never seen one cobbled onto a boiler, but I have seen plenty on wood/coal stove flue pipes, but most were not ducted, just a blower and through tube exchanger.

@paulphillips4148 Год назад

Mike in 50 years I have never seen anything like that heat exchanger

@DAS-Videos Год назад

My dad did something similar. He wrapped the exhaust pipe with copper tubing, and used the hot water from it to heat a water tank for the domestic hot water. When the boiler went on, a circulator went on to circulate the water around the stack and into the heat exchanger in the water tank.

@ADOENDRA Год назад

Same here ;-)

@throttlebottle5906 Год назад

that water setup and flue pipe air to air heat exchangers worked best on coal/wood fired stoves, where the flue gas temperatures(and pipe) would be very hot.

@ADOENDRA Год назад

@@throttlebottle5906 Yep. And some fire places have a water connection as well.

@whodat1473 Год назад

Used to see them often in the late 80’s on oil fired units, more popular in the 70’s fuel shortages, no need for them today with low stack temperatures

@pacohenmd Год назад

That is exactly how small aircraft cabin heaters work. There is an exhaust shroud that passes ram air over the exhaust and into the cabin with a damper for temp control. Which is why CO sensors are often purchased for safety. Why they don’t come with the plane with that setup is beyond me. But a cracked exhaust shroud can be a very bad thing for a small plane. Good thing you can still open the windows.

@rogersmith5947 Год назад

One day your well trained Peter shall make you stacks.

@barry4666 Год назад

i would call that a high efficiency boiler XD

@scottlaferriere4499 Год назад

That heat exchanger on the flue pipe may cause the chimney to condense from flue gas not being hot enough and possibly not draft from chimney being to cool.

@throttlebottle5906 Год назад

it would never extract that much heat from the flue gasses. well maybe if it was bringing in freezing cold outdoor air.

@eddeeforw3119 Год назад

They have done it for ages with wood stoves. Its most known as Magic Heat, and still produced today. I don't see any difference except if it cracked you would see smoke with the wood fired. Also they are heavy gauge steel, so possibility is way lessened. But like you said... either way, both flue gasses will smell... Up to the operator, had grandparents with them lol. Love your channel man. Take cares

@ADOENDRA Год назад

@@PipeDoctor That's when dad is an engineer / inventor :-) Guess what I became :-) And yes I have learned a lot from the good old day's and still implement those tricks in my new designs.

@throttlebottle5906 Год назад

yep, mostly what I've seen and variations of it, always used on wood/coal stoves, where the flue gas temps were very high in comparison to natural gas/LP/fuel oil.

@chadschafer1723 Год назад

Good way to make sure theres not enough heat in the exhaust to make it out of the chimney. Jeez wonder why its not still made

@alexbecker9588 Год назад

At over 500 degrees dont think that is a problem if the blower doesn’t turn on until the stack it above a certain temp

@summertop511 Год назад

Called an economizer. Hot water loop through the hot exhaust into a hot water fan coil for that room.

@xslabcabxhearsex Год назад

Made a few of these for wood stoves in our sheet metal shop over the years

@xslabcabxhearsex Год назад

@@PipeDoctor no we made tubes kinda like this that the flue pipe for wood stoves heated up and fan blew the heat off it into the room.the smoke pipe wasn’t cut into.the customers had seen a aftermarket device and wanted us to make one based on it.personally I didn’t understand why they didn’t just buy the aftermarket device. Never seen one on or even heard one on a boiler flue.the guy who owned the house must have been a engineer maybe.they can come up with some crazy ideas sometimes

@donaldclark1872 Год назад

I worked on one of those a couple of weeks ago

@donaldclark1872 Год назад

@@PipeDoctor Sorry I was referring to the boiler itself. I get to work on a lot of old boilers in my area.

@jimbonito9810 Год назад

yep robbing temp from exhaust gases ... pretty cool ... seen things similar over the years but not with the blower and fan limit set up

@briandolan9123 Год назад

Wash the burners and blow out heat exchanger co will drop to 20 ppm or less

@kevinpoore5626 Год назад

Well I seen a lot of weird things in my life like a homemade solar water heater made out of black beetle pipe ran all over a roof which works fairly good obviously but never anything like that I mean technically it's like the secondary flu gas exchanger on a modern high efficiency unit in theory

@woody9052 Год назад

Reminds me of a VW heater....

@kobie4238 Год назад

That was pretty cool😂

@marty0715yt Год назад

That is a VW heater from the bug days! Heat the interior by running air across the mufflers!

@marty0715yt Год назад

@@PipeDoctor The exhaust system had an enclosure (plenum) which heated the air for the inside with the aid of a diverter valve and a fan. It was common for the exhaust system to rust out and pour deadly exhaust gases into the occupied space of the car. People just seemed to deal with the problem of deadly carbon monoxide coming out of the heater vents

@rupe53 Год назад

VW used heat from the exhaust while Corvair (Chevy) used the cooling air from around the engine cylinders. The Chevy version was known for blowing oil smoke inside the car due to engine oil leaks, although that system got more hot air to the passengers.

@marty0715yt Год назад

@@rupe53 Chevy Thunder!

@cappello333 Год назад

whos going to run the show in Carolina

@ADOENDRA Год назад

My dad made a heat exchanger at the exhaust pipe, not with air, but with water used for the boiler or the room heater. Unfortunately the house is sold 10 years ago, no picture :-(

@kenmoore800 Год назад

Doesn’t seem any more dangerous than the heat exchanger in a gas furnace, especially the newer furnaces with paper thin exchangers in them.

@swiggs1999 Год назад

You can now buy these things in stores.

@engel1196 Год назад

Shavua Tov!

@chavescrave Год назад

Hi Peter, take the size tag off your shirt :)

@flyingmachineworks Год назад

I’ve seen plenty of videos of people wrapping copper pipe around their flue pipes to pre heat their dhw

@josephlomeo3435 Год назад

Heat exchanger might make the flue gas too cold and not have a good natural draft. Also might make the room negative for combustion air and draft air.

@jasonjohnsonHVAC Год назад

I service a church with an American Standard boiler from 1961.....thing runs like a top and i can't find anything wrong with it. They don't build like them that anymore

@ajalbrecht9956 Год назад

My question to you is when you replace the boiler can you leave this homemade device on top of the new boiler if it's an 82% of course and not be liable for it in the house because there is no UL listing on it?

@brianbuskey7419 Год назад

Why didn’t you condemn that system?

@forzamilan07 Год назад

Did you leave that running with 200ppm is that dangerous

@1971-w9u Год назад

Surprisingly the flue pipe isn’t rusted out from condensation. But 220k btus boiler there is probably 40-60k btus going out the flue. I would hate to see that heat bill.

@Silky_boi Год назад

550 F that’s hot 😤

@ItsTheCostanza Год назад

“She’s a spanker mama” - Steve Lav

@BobbyS1981 Год назад

Hey Mikey. That heat exchanger is pretty ingenious as you said. But, I do not see why this would not pass certification if properly designed. It is no different than a gas fired forced air furnace where the heated combustion gases pass through a heat exchanger with air blowing across it. One could potentially make the waste gas heat exchanger safer with a CO sensor safety circuit to sound an alarm and shut off the blower and boiler.

@BobbyS1981 Год назад

@@PipeDoctor Understood. I meant to say I do not see why something like this would not pass certification if properly designed. I should’ve proofread it. LOL. Sorry for the confusion. 😁 Maybe I should put my mechanical design skills to the test on this idea. 🤔 Appreciate the reply and thanks for all you do!

@JamesBrown-db9pk Год назад

happy sunday mp can u com out 2 servic this boiler your offix=c sez 25 bucks a hr huuryy

@chuckquinn8026 Год назад

That branch piping leaving the heat exchanger should be disconnected and a cover plate installed for safety. Was this guy’s uncle a tin knocker back in the day? Nice build, just unsafe as all hell 😂

@rupe53 Год назад

Not sure where they were sold, but I recall seeing similar heat exchangers out on Long Island as a kid of the 50s / 60s. They also sold external heat fins that strapped onto the flue pipe with small springs. I'm sure none had any UL approval.

@erichardy1988 Год назад

I think that inducer is starving the boiler of air.

@bauhnguefyische667 Год назад

An example of when someone is just smart enough to be dangerously stupid.

@stephwaylonwells3218 Год назад

👍

@xmasgoose5889 Год назад

What if a person used a radiator type system, exhaust gas to heat water pumped into an adjacent room? Would that be safe?

@alexbecker9588 Год назад

Put that heat into a towel warm for after the pool

@danobrien3109 Год назад

Here you would need to shut down that system. If you cannot get it below 100 here you can’t operate it. From the old hvac guy in Toronto.👍🇨🇦

@dancefan20121 Год назад

What would be a good replacement for an old boiler in Ontario aside from the combis they sell? Mine is hydrotherm 125 from the 70s and I’ve been doing the maintenance except for the readings because I’m afraid a plumber will lie to my face and want to shut it off because it’s so old. It has worked really well and have changed parts throughout the years and has never set off the carbon monoxide detector. Is there something similar that will last 20-30 +years with few problems? Plumbers keep wanting to sell me combis but those have life expectancy of 10 years. Would like something similar to what I have but new. Any ideas?

@danobrien3109 Год назад

@@dancefan20121 yes a Weil McLean boiler would or should last 20-25 years. If your in Ontario it is mandated that you have an annual inspection of your draft hood boiler and it be tagged with the before and after readings of CO.

@alexbecker9588 Год назад

@@dancefan20121 those hydrothermal parts are usually still available. Co detectors only alarm when either lots of CO is or a little over a long period of time. CO makes your body not be cause to absorb oxygen if you are get little doses all the time it can cause health problem. Cleaning a heat exchanger on both side and get water Chem right on old or new with good maintenance will keep a system going and safe for many year. I am a plumber in Ontario and service lots of these boilers. Not coming to Toronto those. Finding a good plumber that does boilers is hard to find. The HVAC guys try and fake it a lot

@alexbecker9588 Год назад

@@dancefan20121 we install Laars and Viessmann products and both seem to work great. It is usually a good installation and and maintenance that keeps a system healthy. I clean the the boiler water up and demonetize water and older system add a magna clean to help with magnetite and protect you heat exchanger warranty. The Viessmann high mass boiler are the best replacement for these system but are not cheap Vitocrossal

@swaterman08 Год назад

You could have a carbon monoxide Detector on the other end and if the alarm goes off, it will open the relay and cut off the TT to the boiler. But still not a great idea. I think it would be safer if you had a copper heat exchanger in the exhaust pipe that would heat water and then go into a fan coil to release the heat on the other end. that would limit the possibility of having fumes going into the house. or just have the actual heating loop run thru the heat exchanger, maybe on the return before it gets back to the boiler. but nothing in life is free, especially energy.