EH-12S, 41,000 BTU Output, 12KW Single Phase Three Element Electric Boiler Zoom

EH-12S, 41,000 BTU Output, 12KW Single Phase Three Element Electric Boiler


Brand: Slant/Fin

Qty Price
/ each
On Backorder Expected to Ship in 3-4 Weeks



Number of Elements: 3
Fuel Type: Electric
Phase: 1
DOE Rating:
BTU Output: 41000
System Type: Hydronic (Water)
Application: Heating

Description for Slant/Fin EH-12S-135S

Note: Product Title reflects this boiler's DOE Rating

Designed with features for dependable performance, the Slant/Fin Monitron boiler combines the convenience of electricity with the comfort of hydronics. Trouble free operation and long life are ensured. The compact, wall-hung Monitron electric boiler is easy to install for primary or standby installations. A chimney is not required. The boiler works with virtually any baseboard, convector or radiant heating system, providing all the comforts of modern hydronics.

The Slant/Fin Monitron electric boiler is the smart choice as a heat source for virtually any hydronic heating system when another fuel is not available, or when a back-up for other heating equipment is desired. Although rated in kilowatts, it is clearly identified by BTU output. Monitron is particularly suited for commercial and industrial facilities, or office buildings which can't risk down time with their existing heating equipment. If oil or gas is temporarily unavailable, the owner easily switches the heating system to the electric boiler.


  • Compact, easy to install, minimal maintenance
  • Internal baffles improve heat transfer by directing water flow along the full length of each heating element
  • UL listed; ASME certified
  • Dual limit aquastat
  • Altitude pressure and temperature gauge
  • Safety relief valve (unmounted)
  • Circulator relay and heater contactors
  • Circuit breaker (one or two heaters per breaker)
  • Low voltage thermostat with adjustable heat anticipator (packed separately)
  • Drain cock, 3/4 " (packed separately)
  • Built-in air separator
  • Cast-iron ASME approved heat exchanger
  • Terminal blocks for circulator, thermostat, flow switch and for zone valve transformer
  • Sequencer
  • Complete jacketing
  • Flow switch. Not included with, but necessary on all models
  • Circuit breaker for circulator and control circuit
  • Lifetime limited warranty

PLEASE NOTE: The product weighs 145 lbs. and may require the use of a
lift gate.
If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.

EH-12S, 41,000 BTU Output, 12KW Single Phase Three Element Electric Boiler

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1 Question | 2 Answers
Displaying question 1
  • EH-12S, 41,000 BTU Output, 12KW Single Phase Three Element Electric Boiler


    can this unit run at 180 degrees and sustain at 4 gpm?
    Asked on 5/26/2011 by merlin from 83861

    2 answers



      Yes, this unit should be able to deliver 4.1 GPM.

      Answered on 5/27/2011 by PexSupply Staff from NY
    • A:

      The question needs to include the inlet temperature. The 41,000 BTU capacity of the EH-12S (12KW) will deliver approximately 20 degrees temperature rise (delta t) across the heat exchanger at 4.1 GPM (a little less if he's using glycol). So, if Merlin's inlet temperature is lower than about 160 degrees, the EH-12S WILL NOT maintain 180 degree discharge temperature at 4 GPM.

      Answered on 6/29/2011 by Mark from Seattle WA
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