JTG MUIR thermalboard official site

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JTG/Muir is the premier wholesale manufacturers' representative for the
hydronics industry!


With thousands of Munchkins now in service, we can confidently say Munchkin is the most reliable and popular high-efficiency boiler in America. Munchkin has set the standard for hydronic systems efficiency with load matching modulation, while providing whisper quiet operation from a tiny corrosion-proof box.
  • 92% AFUE, 97% combustion efficiency
  • Fully modulating for ultra high efficiency 
  • All stainless steel construction
  • Compact, lightweight design
  • Direct vent with standard schedule 40 PVC plastic pipe
  • Super quiet operation
  • State-of-the-art control
  • Reliable field-proven spark ignition
  • Sealed combustion
  • Environmentally friendly
  • Modular component construction
  • 12 year limited warranty
  • Operates at low supply temperature
 
Presently, the modulating Munchkin comes in five models:
  • 50M: 50K/10K BTU Input Wall Mount  NEW!
  • 80M: 80K BTUs
  • 140M: 140K BTUs
  • 199M: 200K BTUs
  • 399M: 400K/80K BTU Input  NEW!
energy star compliant vision controls
C O M M E R C I A L   R E S I D E N T I A L
NEW! ModCon 94% Efficient Commericial Boilers
munchkins on racksNow Munchkin is available in commercial models of 199K and 399K for hydronic or potable volume water heating and in modular packages to 1600K.   new munchkin with gray coverMunchkin is an ideal choice for Residential Applications offering home heating savings and instant hot water on demand.
ASME / UL / AGA / NSF

Click the button below to go to:
to munchkin commercial
  AGA / UL / CEC

Click the button below to go to:
to munchkin residential


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Please contact info@jtgmuir.com with comments, questions, or corrections.