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Gas Unit Heater, LP, Propeller, BtuH Output 121,500, 2400 cfm, Gas Connection 1/2", Full Load Amps 6 close
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Gas Unit Heater, LP, Propeller, BtuH Output 121,500, 2400 cfm, Gas Connection 1/2", Full Load Amps 6

Price $1,381.00 / each

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  • Item # 4LX55
  • Mfr. Model # 4LX55
  • UNSPSC # 40101819
  • Catalog Page # 4294
  • Shipping Weight 190.0 lbs.
Country of Origin USACountry of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • ItemGas Unit Heater
  • Gas TypeLP
  • Fan TypePropeller
  • BtuH Input150,000
  • BtuH Output121,500
  • Air Flow2400 cfm
  • Full Load Amps6.9
  • Gas Connection1/2"
  • Flue Dia.5"
  • O.C. Mounting18-5/8"
  • Height33-3/4"
  • Width25-1/4"
  • Depth43-1/2"
  • Indoor Air Discharge Height24-1/2"
  • Indoor Air Discharge Width18-3/4"
  • Voltage120
  • Hz60
  • Air Temp. Rise47 Degrees F
  • Installation Height8 to 20 ft.
  • Ignition SystemHot Surface Pilot
  • Primary Heat Exchanger Material20 ga. Aluminized Steel
  • Drive TypeDirect
  • VentPower
  • Burner Air Inlet Size5"
  • Manufacturers Warranty Length1 yr. All Components, Additional 9 yr. on Heat Exchanger, Flue Collector and Burners
  • StandardsETL
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Compliance and Restrictions



The Dayton® gas unit heater is a tubular, gas-fired direct spark propeller unit heater. Designed to be suspended within the space to be heated, it features 2-point suspension for balanced installation. The power venting allows horizontal venting through side walls. Delivers 83% thermal efficiency. ETL Certified in accordance with both Categories I and III venting requirements.
Note: For altitudes above 2000 ft., consult owner's manual prior to installation for proper adjustments. This heater is not to be connected to ductwork.

Repair Parts

Displaying repair parts for model:
  • 4LX55,
  • "4LX55"

Rated 1 out of 5 by 2reviewers.
Rated 1 out of 5 by work on it at least 2x per season-it is a piece of junk.i have so much money into repair cant rely on it at all and needs baby siitting by a repair tech at all times. February 1, 2013
Rated 1 out of 5 by I give this unit 1 star because I can't rate it any lower. Purchased new about 10 years ago. Has probably 100 hours of run time tops on the unit. The Honeywell SmartValve has gone out for the 4th time at $300 bucks each. Also, the furnace has rattled since day one.Save your money and buy a Reznor. November 27, 2012
  • 2015-10-08T19:50:38.379-05:00
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