Peerless Boilers – MI Series Boiler

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The foundation of any boiler heating system is the boiler itself. Through experience, technology and innovation, PB Heat, LLC continues to be a top manufacturer of Peerless brand residential boilers!

SKU: MI Series Category:
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Peerless Boilers MI Series residential, cast iron, hot water boiler is fully packaged and ready-to-install in conventional chimney applications. The key component of the Series MI™ boiler is the heat exchanger which features a greater percentage of cast iron than the competition for a long life of durability and dependability. The front-facing integral draft diverter lends to a low-profile design allowing for installation in tight spaces with low ceilings. Backed by a non-prorated lifetime warranty on the heat exchanger, the Series MI™ is a top choice!


Peerless Boilers MI Series Features:

  • Up to 85% AFUE (MI85™)
  • Natural Gas-fired Boilers (Series MI™ also available for LP gas systems)
  • Residential Cast Iron Boiler for Hot Water Heating Systems
  • Fully Packaged and Ready to Install
  • Cast Iron Sections—Factory Tested and Assembled with Steel Push Nipples
  • Can be Safely Vented into Natural Draft (Chimney) Venting (See manual for specific venting instructions.)
  • Deluxe Powder Coated Steel Jacket—Reduces Boiler Heat Loss
  • Safety Controls—Flame Rollout Shut-off Switch, Vent Safety Switch and Low Water Cut-off
  • Low Profile Design—Ideal for Installations with Low Ceilings


Standard Equipment

  • Dependable Spark Ignition System
  • Taco Circulator
  • 30 PSI Safety Relief Valve
  • Drain Valve
  • Electrically Operated Automatic Vent Damper
  • Boiler Reset Control with Low Water Cut-off for Increased Efficiency and Safety


Complete Warranty Program
Peerless Boilers dependable products are backed by the best warranty in the industry. Peerless Boilers are so confident in the quality and dependability of boilers, that they are supported by Complete Warranty Program. Peerless Boilers warranties are “full cost” warranties (up to the original cost of the boiler), rather than the pro-rated warranties currently offered by other boiler manufacturers. PB warranty coverage does not decrease with time, rather, it remains complete for the entire length of the warranty. Your family can rest easy, knowing that your new boiler will provide years of dependable home heating comfort.

Additional information


Peerless Boilers