Plumbing, Heating and Pool Repair Guides

Munchkin Boiler 80M

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The Munchkin 80M boiler is a gas-fired boiler that was designed for residential homes. This boiler is rated at 92% efficiency and an Input Btu’s of 27,000 to 80,000 Btu’s. The Department of Energy Rated Heating Capacity is 25,000 Btu’s to 74,000 Btu’s. If you are looking to save money this winter, the Munchkin Boiler 80M is what you need.Munchkin Boiler 80M

The Munchkin 80M Gas Fired Boiler offers a 316L Stainless Steel Construction. Stainless Steel is one of the strongest materials made, it offers protection from rust and corrosion as well as provides a maximum reliability. The boiler offers a stainless steel heat exchanger that will prevent corrosion of the heat exchanger that is caused by the condensation of the flue gases that are often found in the secondary portion of the heat exchanger.

The flue and the stainless steel water circuits are connected to help direct the flow of the gases through the system, this is called the heat transfer. Other boilers lose some heat in the transfer but the Munchkin Boiler 80M is not one of them. When the heat passes through the system from the sealed combustion system it can transfer right into the water as it travels through the helical circuits. This will bring you maximum efficiency every time.
Munchkin Boiler 80M
Some of the features and benefits are the reliable spark ignition. The Munchkin System guarantees that this divide will provide a constant and dependable operation. The unit uses a Direct Vent with a Schedule 40 PVC Plastic Pipe. The piping is one of the inexpensive ways to install vent piping. There is no chimney needs and the installation is flexible with this type of piping. With PVC piping, it will not rust or corrode. The 80M has a factory installed Munchkin 925 Control Board. This was designed to adjust the firing rate to match the needs of the heating system and this is done by saving money and energy with the 80M. You will need a 1-1/4″ NPT connection for the Supply Return Connections, a 3/4″ gas connection and a 3″ vent connection.

Some of the other standard equipment included is a Wiring Harness, a 8 psi Water pressure Switch, a Burner Fan, a Plastic Boiler jacket that will protect the unit from corrosion. Also included is the electrical junction box and a high grade Inconel NIT Burner. Some optional equipment that you can purchase to make the boiler more efficient is s Superstor Ultra Indirect Fired Water Heater and a SuperStor Ultra Pool Heater. A condensate neutralizer kit and a venting kit that includes a V1000 Aluminum Outside Terminal Kit plus a Concentric Vent Kit with a Termination of 3″.

The Munchkin 80M is one of the most efficient boilers on the market. If you are looking to save money then this is the unit for you. It has a sealed combustion operation plus it is environmentally friendly. Talk to Munchkin representative and ask them any questions that you have about the 80M or any other Munchkin Boiler that you are interested in. You are making a good choice with Munchkin.

28 Comments

  1. Had this installed a few years ago, and it was one of the worst investments I have ever made. The blower unit has failed every winter since I have had the system. I would not recommend this unit to anyone. They would not honor the warranty, and would shipped the part out two days after I ordered it last year. I am in the process today of installing the FOURTH blower unit.

  2. Same here. I’m going on my 3rd blower unit in 4 years. Circuit board also went out after year and half. NOT covered. I bought this unit (piece) brand new when I built my house Munchkin does NOT stand behind their product. VERY VERY POOR customer service as well. They told me there is just nothing else we can do for you sir, and hung up. Same as Nic, BAD investment. Go with Weil Mclain

  3. Wow. This is not encouraging. I am in the middle of fault code hell. An F00 fault code on my 80M Munchkin boiler is thrown each time I start her up. I am trying to understand what to look at next and how to trouble-shoot but am having difficulty. It’s late…(and cold) so i will tackle tomorrow. I should also say that I am consulting the various manuals I’ve found online. We purchased this house last March and this is the first problems we’ve encountered. Any advice is welcome… Cheers!

  4. I echo the comments on the blower motor. Had this installed in January 2007. Blower motor went in January 2009. It was covered under their 3 year warranty but cost me $350 in labor. I assume I’m out of luck next time short of legal action, and it sounds like there will be a next time.

  5. The Munchkin m-80 is an absolutet nightmare. I empathize with Shaun on the “fault code hell.” My index finger is numb from reseting this piece of garbage. Worse, not only does the manufacturere not stand behind it, neither does my contractor. Spread the word to anyone you know, whether or not they are in the market for a boiler. Blacklist Munchkin and Vastola Heating & Air Conditioning in Buffalo, NY.

  6. Not apples to apples, but we have been living with a Munchkin 199M condensing boiler, since home was built new in 2001: it may be the least reliable and most costly product I have ever owned. 3 main pc boars, 3 blower motors, countless other parts, 3-4 service calls per season, etc. The dlr/installer has done dozens of Munchkins; most are ok they say…a few like ours are complete lemons. Heat Transfer offers zero backup, consideration or even sympathy. We have spent thousands of dollars over the past 8 years, and the little piece of junk always seems to go “down” at the worse possible time. We use it for domestic hot water, in addition to heat, and the continual loss of DHW is no fun. I am at end of my rope. I would not take a new Munchkin if it was free. I am shopping other brands for replacement and, other dlrs/installers, but all the brands promise the same jive, imo.

  7. This boiler was recommended and installed by a big Washington, D.C. company, JONES AND WOODS. DO NOT HIRE THEM. Lots of problems because basically they had no idea what they were doing and lied to me about all the experience they have had installing these units, as evidenced by the elementary mistakes they made. Finally got the Munchkin rep. on a site visit and he confirmed that they had left out MAJOR components, like the secondary circulator pump on the supply side, as plainly specified in the install diagram. Learned lots from the rep, who was great, both about improvements in the Rev. 2 version of this unit as well recommendations: this little baby puts out LOTS of water as condensate, which must be directed back into the unit by having the exhaust pipe tilted back into the house. Steams outside like a locomotive in cold weather. The condensate, however, is HIGH ACID and must be neutralized with a kit as over time it will eat through even a cast iron drain. Condensate outlet hooked directly to a floor drain is a good idea. I’m using a standard plastic condensate pump to get the water up and over into a sink, and am worried that with the PH adjuster downstream of this pump, how long can the pump last? Also, how much net energy savings can there be, given the THREE electrical devices necesssary to run this moon unit? (2 circulators and the pump).
    Also, absolutely has to be taken apart and “combusion residue” that looks like coffee grounds cleaned out of unit ANNUALLY, further affecting operational cost savings.

    BE ADVISED: In spite of what Heat Transfer Products says explicitly on their website there is no WARRANTY registration program (!) and they no longer over the “certified training” programs they say are necessary for warranty
    eligibility. Appalling, but true.

    Next conversations about this experience is with my lawyer.

  8. Finally got everything done after 2years of sweat equity building are dream house ,and actualy living in the house for about a year are Munchkin t80 boiler went out and left us with no heat or hotwater(this was back in September).Being a builder I understand that new apppliances can go bad. So I called the installer and The service rep on the phone was trying to tell me it was the control board that was bad and that it was’nt under warrranty and it was going to cost me around 600.00 dollars to get it replaced plus a 186.00 dollar service call. After the service tech arrived and I demanded he first replace the blower ( because the F13 code says it can be either the blower or circuit board)and the blower was under warranty he hooked it all upand it worked great ,all the while telling me and showing me how important it was to clean the combustion chamber and check other connections ,venting ,drains etc.All of wich where never told to me during the installation.Now this morning Iwake up to a cold house and a cold shower again.After another phone call and being told it was going to be tomorrow before anyone can look at it .I decide to start investigating this POS,. Reading the reviews online and hearing all the upset owners of these Munchkin Boilers I decide since the service guy wont be out till tomorrow and the manufacture surrely is’nt going to do anything that I will find my own control board .Thinking that it had to be it because the blower was just replaced .I found one in Seattle for 250.00thru a Mechanical company where they where very helpful , I wont mention names because now after installing the new board the Boiler still does’nt work (and I’am hoping to return it).Now with 3 very upset females in the house I guess I will still be having the service tech out again to replace a 2 month old blower ,I suppose they’ll still want there service fee again. Must be time to take a trip into the owners office and ask him if this is what I bought 25,000.00 dollars worth of heatting and hot water .. Would be great if Munchkin would step up and replace these units or parts with at least a 10year full coverage warranty.If there’s one thing I’ve learned if you do’nt keep your previos customers happy ,you might as well kiss the future ones goodbye .

  9. I too wish that I had never purchased a Muchkin. I have replaced three mother boards and one blower. I also had $6,000.00 of water damage when the Wirsbo zone manifold leaked water and destroyed the living room ceiling. The mother board and blower problems were directly related to poor installation. The intake air and exhaust gas exit were piped too close to each other using a venting kit more suited to a forced air furnace. Highly corrosive exhaust gas was being sucked into the intake air supply and recirculated back into the boiler. Corrosive byproducts collected on the mother board shorting it out. The blower impeller is made of a composite material which becomes brittle after prolonged contact with corrosive exhaust gas. The blower impeller failed and scattered pieces throughout the boiler enclosure. These problems were corrected after months of negotiations with the installer who claimed that he had followed Munchkin’s installation instructions. The installation instruction for our unit calls for the air intake to be no closer than 8 inches to the exhaust and no further than 36 inches. Based on my experience the farther the two are apart the better. Mine are now 30 inches apart.

    I do the annual combustion chamber cleaning myself. The instruction manual is fairly clear regarding this effort and I save $150.00 per year. It takes about 2 hours to complete the task. I have also had a number of outages due to the flame sensor, which on my unit must be cleaned twice per year even though we are firing natural gas. Cleaning the flame sensor is discussed in the instruction manual under “Faults” and not in the annual maintenance section.

    In summary: There is a monster in the basement!

  10. After readings Tom’s saga about his POS Munchkin, I once again realize that some heating contractor really does not know his trade. Your problem of cross contaminaton could of been avoided if he read the venting section. Any installer who knows his work ( and a little common sense), knows that products of combustion must not re-circulate into the fresh air intake. I wonder what the piping looks like. How about the circulators? And the best thing is the contractor who does it for a living can’t get it right, so now, you the homeowner/end user are going to service you Munchkin!LOL GOOD LUCK!! You and many others are victims of contractors who pretend they know what they are doing when it comes to installing a Munchkin.

  11. I also purchased a Munchkin about six years ago and have had problems from the first day of installation. The local company has been out to my house approx. 30 times trying to figure out the codes that were coming up. The “rep” from the dealer was also trying to fix the furnace. Since DAY ONE I have had problems. I have also put another 1500.00 dollars into the system since day one. Munchkin does not warranty anything. In the past six months, I have had to put a blower system in and this week I have had to put a motherboard in. I would not recommend this boiler to any sane person.

  12. I have sold and serviced hundreds of Munchkin Boilers over the last 10 years. They are like any other low mass modulating boiler, they need to be serviced by a qualified teck. an a regular basis. About 80 to 90 percent of the problem boilers that I have been asked to work on haven’t been installed correctly. This past winter along I’ve had over 20 units completely repiped. Of course its always the boiler fault even if its not installed correctly.

  13. I installed a Wiel Mclain Ultra condening boiler five years ago. American made, it has worked flawlessly. I do have to clean out the condesation trap every year or so. Otherwise no other service. I have NEVER had a repairman out.

  14. I had a Munchkin 80 for about 15 months..I couldn’t take it any longer and replaced with with a Weil McClain bolier. The only problem I had with the Munchikn was that it would vibrate at start up…I mean vibrate to the point the floor and pipes would shake. I had it service three times with no fix in sight…the unit continued to vibrate. I didnt want to buy a new boiler but felt for safety reasons I had to…Dont buy a Munchkin!

  15. Ibought a Munchkin 80 & indirect WH about 4 years ago. Water heater started leaking after 4 months. Fan on the Boiler went out after less than a year. Now the boiler is leaking. Company in not responsive on warrantly. Can’t even get a call returned. Looks like I’ll be replacing the boiler, but certainly with not be a munchkin or any other HTP junk.

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