Comments on: Munchkin Boiler 80M

By: G. Mason

G. Mason — Wed, 20 Nov 2024 13:30:09 +0000

We installed a Munchkin 80M in our home in 2006 to support the hydronic floor heat installed in a major addition to our home. There was one situation in the second heating season where one small circuit panel needed to be replaced. Since then (it’s now 2024) the unit has operated flawlessly year in and year out. The only subsequent issue with the heating system was a single situation when a valve in one of the manifolds was stuck closed, but that was resolved in less than an hour. We can’t really overstate how satisfied we’ve been with our Munchkin going into its 18th heating season!

By: Pete Falconi

Pete Falconi — Mon, 18 Oct 2021 20:20:52 +0000

16 years on my 80m and have never serviced or touched it. Thing runs quite a bit to heat my 3000 square foot commercial garage and is very efficient.

By: John Rogers

John Rogers — Mon, 17 Feb 2020 18:20:07 +0000

I have a Munchkin 80M and its been a lot of trouble and unreliable. No service people here in Bozeman MT seem to understand the unit. A few years ago I replaced the display board myself and “fixed” the problem for a year or two. Now its fails with error code F09 (no flame). I am going to clean the igniter myself and if the problem persists, I’ll buy a different boiler. I am also going to stay away from HT Products who sells or sold Munchin.

By: Peter Campion

Peter Campion — Sun, 29 Apr 2018 18:45:47 +0000

I need to know how to get the air out of a munchkin 80

By: Dave

Dave — Wed, 08 Mar 2017 21:29:58 +0000

Installed a Munchkin 140M 13 yrs ago. It’s been working fine with no problems up till now. It’s one of the original models that doesn’t have the “upgrade” kit/control bd. Last week, no heat. Technicians spent 2 days and lots of my $ to no avail. Still no heat. They replaced the blower motor but problem now appears to be the pressure switch. I called HTP and the joker in tech support tells me that the pressure switch that this units requires has been discontinued and is no longer available. Now I’m reasonable safe around tools so I asked him if there are any after market pressure switches that are compatible. He says no and that instead, I need to buy the “upgrade” kit/control bd (wholesale cost from HTP ~$550). Can you believe this nonsense? Instead of replacing a $10 pressure switch, he recommends that I throw away more of my hard earned money for an upgrade kit? If this company cared about customer service, the least they can do is get one of the members of their “crack” technical staff to spend a little time researching a compatible replacement. Instead, they peddle this bit of nonsense. This company is corrupt. I will go out of my way to steer everyone I know away from this corrupt company and their faulty products.

By: john h

john h — Fri, 11 Jan 2013 18:08:55 +0000

M80 lots of trouble. ‘Back fire’ and blew the vent top off about 20 ft. Scary. At year 3, ‘full rebuild’ was about $800 – should have dumped it then. They say you need yearly maintenance, at $300 or so. Forget efficiency #, it’s way more service than any savings. Replaced thermo switch twice, lots of error codes. Burner gasket blew a hole that blasted blue flame inside and melted the plastic main body frame through about 4″ before shutting down. Would never recommend Munchkin, ours is for radiant floor heat. Get a Takagi TK4 (or similar) for either radiant or domestic water. Same install date for domestic hotwater, zero issues. Works every time – frankly it’s on about 10x more for the same period of use also; makes it about 1000x more reliable.

By: steve

steve — Mon, 26 Nov 2012 21:45:23 +0000

mine just blew up,water pissing into the inside and out the exhaust ,only 8 years old???? new one coming in tomorrow,lets see how much this is going to set me back ???? under warren-tee but pro rated so lets see ??? yup putting in another one (stupid me ?? ) had many problems with this one electrodes went ,gaskets suck ,if you buy new ones get many !!water pressure switch, and other things also !! good thing I never called service or I would be looking at thousands !! well wish me luck with the next one,good luck everyone else !!

By: Norm

Norm — Sat, 17 Dec 2011 17:58:35 +0000

I installed a Munchkin 80M boiler about 6 years ago and just had the control board fail for the 3rd time. Seems all the savings for “high efficiency” is spent in repairs. Contrast this with a wood furnace I’ve used for over 25 years that has Honeywell analog controls that have never malfunctioned. I agree the solid state controls are over-complicated and way too fragile for real world use. Is there anyone that refurbishes the Munchkin control boards?

By: kat

kat — Fri, 23 Sep 2011 19:37:30 +0000

bought a house with 80M munchkin and all i have is problems ,,,going on thousands of dollars that is costing me to run it,,,really thinking about replacing it with something else,,it was installed in 2004 and constantly brakes down,,last year was the one year that it runned fine ,,now my tech turned it on to service it and motor and fan have to be replaced,,it just died,,the furnace was off all summer and i have a repair on my hands again before we can get heat,,,hate this product ,,i really advice people to stay with regular furnace,.,yu may pay little more in heat but yu’ll have a lot less headacke and maintnaice bills,,,we’re save in heating bills but i already put at least two thousand dollars in repairs between parts and labor,,,DO NOT RECOMEND THIS PRODUCT AT ALL ,,,AND MANUFACTURER SHOULD BE RESPONSIBLE FOR SOME OF THESE MALFUNCTIONS,,,,12 YEAR WARRANTY BUT DOESN’T COVER VERTUALLY ANYTHING,,,,

By: GS

GS — Mon, 22 Nov 2010 17:52:48 +0000

I feel dam lucky, put mine in a 2700 sq. ft. home in 2005 and to date no problems. If it quits I feel confident the plumber who put it in as no clue on what to do. Where do I call?? 86301 , AZ