Dayton U31 Electric Heater

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  • Dayton U31 Portable Electric Radiant Convection Space Heater
  • Features Dual Heating and Provides Both Radiant and Fan-Forced Heat!
4.5 Star Rating: Good
Availability: In Stock - Ships today if ordered by 1:00PM(PST)
List Price: $180.95
Price Break: $42.00
Our Price: $138.95
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Take the chill off in your garage or workshop with the Dayton U31 portable electric utility heater. Featuring up to 5,120 BTUs of heat, the Dayton U31 evenly distributes warmth to ensure maximum comfort.

In addition to its powerful heat output, the Dayton U31 electric utility heater is unique because it offers both fan-forced and radiant heat in one convenient unit. When switched onto the low setting, the U31 provides radiant heat that replicates the rays of the sun. When set to medium, this heater gives off fan-forced heat. When you need an extra blast of warm air, this heater uses both radiant and fan-forced heat for heavy-duty heating.

Additional features include a built-in thermostat for precise comfort control and a convenient carrying handle for durability. Safety features include an automatic tip-over switch and instant overheat protection.


  • Model: U31
  • Product Type: Electric Heater
  • Product Dimensions: 11.00 x 11.50 x 15.00
  • Product Weight: 8.00
  • Product Color: White
  • Application: Ideal for heating garages, workshops, and other rugged environments
  • Type: Garage Heater
  • Fuel Type: Electric
  • Coverage Area: 150 square feet
  • Voltage: 120 volts
  • Watts: 1500 watts
  • Amps: 12.5 amps
  • Frequency: 60 Hz
  • Certifications: UL
  • Heating Capacity: 5120 BTUs
  • Heating Method: Fan-Forced, Convection, Radiant
  • Construction: Stainless Steel, Metal
  • Adjustable Louvers: No
  • Number of Heat Settings: 3
  • Installation Type: Plug-In
  • Built-In Thermostat: Yes
  • Thermostat Type: Double Pole
  • Wall Mountable: No
  • Ceiling Mountable: No
  • Automatic Shut-Off: Yes
  • Carrying Handle: Yes
  • Includes Plug: Yes
  • Plug Type: Grounded 3-Pronged Plug
  • Power Cord Length: 6
  • Alarm: Yes
  • Automatic Temperature Control: No
  • Fan Delay Function: No


  • Auto safety shut-off and tip-over protection makes this heater extremely safe
  • Comfort control thermostat allows for precision temperature control
  • Easy adjustment control knobs for simple operation
  • Great for heating garages, workshops, and other rugged environments
  • Made of enamel with a chrome grille to ensure durability
  • Provides both radiant and convection heat for true versatility

Real Customer Testimonials

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4.5 Star Rating: Good
Name: S. Lause
Date: 01/25/2011
Location: Fremont, OH
Overall Rating:
5.0 Star Rating: Outstanding

Review Title: Works bigger than it looks
Comments: I use this to thaw out my 1 car garage. I've only run it for 30 minutes at a time, but it does take the chill out of the air on freezing days. I was worried when I took it out of the box since it's so small, but it does the job nicely.
Recommend to Friend: Yes
Name: Ron
Date: 10/21/2010
Location: Hacketown, NJ
Overall Rating:
4.0 Star Rating: Good

Review Title: The u31
Comments: Delivered on time and without damage. Air N Water offered the best price. This little heater may not heat a whole unheated space quickly, but it definitly throws off enough heat for small areas. You will need to use the high setting for colder days and put it on at least a half hour before using the room. Since it works on 120 volts, you do not need a heavy duty 220volt circuit to run it.
Recommend to Friend: Yes
Name: Eliot T.
Date: 04/07/2010
Location: Gaithersburg, MD
Overall Rating:
5.0 Star Rating: Outstanding

Review Title: Lots of heat, small package
Comments: I use the U31 in my 1.5 car garage (oversized 1 car) to work on my race car in the winter. I was initially worried about the size, it being so small, would it put out enough heat. It works very well if you give it enough time. I would say that I have to leave it on in my uninsulated A-frame garage for about an hour before woking in there. I still need a small jacket and cap to keep my head warm, but its comfortable. My hands and feet do not get cold being in there for hours. Also one good aspect is that there are no drafts.
Recommend to Friend: Yes
Name: J. Dickson
Date: 03/01/2010
Location: United States
Overall Rating:
5.0 Star Rating: Outstanding

Review Title: Review
Comments: Product works fine but is noisy.
Recommend to Friend: Yes
Name: B. Wetherington
Date: 01/27/2010
Location: Moreland, GA
Overall Rating:
5.0 Star Rating: Outstanding

Review Title: Highly Recommend
Comments: Bought this heater to add extra warmth to an area where our two cats stay. They love it - we love it. This heater is a good quality and provides more warmth than any we have had in the past. We recommend this and will be doing future shopping with this company. Like the reviews of other shoppers on the website. Very helpful.
Recommend to Friend: Yes
Name: R. Davis
Date: 12/06/2009
Location: Tempe, AZ
Overall Rating:
4.0 Star Rating: Good

Comments: Product works better than expected
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