PK Ultra Boilers


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  • Three Pass Design
  • Standard Burners
  • Reversible Swing Door 
  • Over 90% AFUE 
  • No Combustion Chambers
  • Standard Controls
  • ASME designed and certified pressure vessel
  • Easy Access For Cleaning the Primary and Secondary Exchangers
  • Firing rates from 0.90 to 1.25 gallons/hour (120,000 to 160,000 BTUH)



The e·f·m PK Ultra High Efficiency is now available "Knocked Down." If you have an installation site that is tight, the PK Ultra can be provided in four pieces then re-assembled on site.



The PK Ultra is still available as an assembled unit and comes with a  Beckett, Riello, or Carlin oil burner. The gas version comes with a Carlin gas burner.

Energy Star Qualified Product
Locate an EFM Dealer in your state
Homeowners who would like to see our products should schedule an appointment with your local EFM dealer. You can also call us at 570-385-1892.

Dealers can schedule training on installation and maintenance at EFM in Schuylkill Haven, PA at your convenience. Just call us at 570-385-1892 and set up a date.