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Four Seasons Heating & Air Conditioning, Inc., Heating & Air Conditioning, Chicago, IL

Boilers / Water Heaters - Sales & Repair

Sales & Installation

If you are looking for a hot water boiler or boiler sales and installation contractor, Four Seasons Chicago has you covered. By reducing your heating cost, Chicago land residents can enjoy water boilers at a minimized price.

The Series MI residential gas hot water boilers are cast iron, fully packaged and ready to install. This atmospheric gas-fired boiler is designed for natural draft use with a conventional chimney. The Series MI boiler is available with a standing pilot or intermittent ignition, and is available as natural or LP gas. The intermittent ignition is provided by the Honeywell SmartValve® System, which houses the safety and ignition functions in one device. Only when there is a need for heat does the ignition light the pilot, keeping cost low and eliminating the need for extra wiring and separate controls. The integral draft diverter provides a low-profile design, allowing the boiler to be installed in areas with low clearance. The Standard Honeywell controls are easily accessible making the Series MI boiler simple to install and service. Standard equipment includes a Taco circulator, a flame rollout safety shutoff switch and a vent safety shutoff switch. The Series MI boilers are energy efficient exceeding the 80% AFUE (Annual Fuel Utilization Efficiency) federal standard for residential boiler efficiency.


Series MI Water Heater: At a Glance Type: Residential
Construction: Cast Iron
Fuel: Gas-Fired (Natural or LP)
Input: 70 to 260 MBH
Output: 58 to 211 MBH
Venting: Natural Draft
Trim: Water
Ignition: Standing Pilot or Intermittent

  • Natural Draft Venting
  • Standing Pilot or Intermittent Ignition
  • Low Profile Design
  • Natural or LP Gas
  • Residential Hot Water Boilers
  • Series MI Product Ratings
  • Product Dimensions

Model Number
  • MI-03
  • MI-04
  • MI-05
  • MI-06
  • MI-07
  • MI-08
  • MI-09

  • Input MBH
  • 70
  • 105
  • 140
  • 175
  • 195
  • 227.5
  • 260

  • Heating Capacity³ MBH
  • 58
  • 86
  • 115
  • 143
  • 160
  • 186
  • 211
  • Net I=B=R Ratings Water¹,², MBH
  • MI-03
  • MI-04
  • MI-05
  • MI-06
  • MI-07
  • MI-08
  • MI-09

  • Standing Pilot AFUE, %
  • 80.2
  • 80.2
  • 80.2
  • 80.3
  • 80.5
  • 80.3
  • 80.1
  • Intermittent Ignition AFUE³,
    %
  • 82.2
  • 82.1
  • 82.0
  • 82.0
  • 82.0
  • 82.0
  • 82.0

  • Water Content gal
  • 4.72
  • 6.00
  • 7.28
  • 8.56
  • 9.84
  • 11.12
  • 12.40
  • 1 Net I=B=R water ratings based on an allowance of 1.15.

    2 Consult factory before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.

    3 Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government test. Before purchasing this appliance, read important information about its estimated annual energy consumption or energy efficiency rating that is available from your retailer.

    Boiler Model Number
  • MI-03
  • MI-04
  • MI-05
  • MI-06
  • MI-07
  • MI-08
  • MI-09

  • Width "A"
    Front
  • 12 1/2"
  • 15 7/8"
  • 19 1/4"
  • 22 5/8"
  • 26"
  • 29 3/8"
  • 32 3/4"

  • Depth "B"
    Side
  • 26 5/8"
  • 26 5/8"
  • 26 5/8"
  • 26 5/8"
  • 26 5/8"
  • 29 5/8"
  • 29 5/8"

  • Top to Floor
    "C"
  • 31 3/8"
  • 31 3/8"
  • 31 3/8"
  • 31 3/8"
  • 31 3/8"
  • 31 3/8"
  • 31 3/8"

  • Four Seasons Information