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  • #16
    Re: Best Heater for Trailer?

    Originally posted by Plumber Punky View Post
    according to my heat loss calculator you have nearly 8,000 btu an hour loss assuming a 5F minimum temp, 50F temp indoors, no insulation. the $20 1500W heaters are not nearly enough. 1 kw = 3413 btu. So, 1.5 kw = 5119.5 btu.
    Thanks for the math! While there's no insulation in my trailer there is a 1/8" plywood skin on the front bulkhead and ceiling, 3/8" plywood cladding on the side walls and a plywood floor. Albeit not much, I'm sure this wood does offer some sort of R value.

    5'F is definitely on the colder side of the seasonal lows we experience in my neck of the woods so I'm thinking that I may be able to get by with a 1000W forced air style heater. I'm a little concerned about the load that a 1500W heater will draw along with my battery chargers and lighting compared to a 1000W one, (I always turn off the heater when running the microwave or compressor).

    Maybe one of those 500/1000/1500W oil filled rads with a little circulating fan beside it would do the trick. It would certainly give me options to choose from depending on the circumstances.
    "Good enough" isn't really "good"...

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    • #17
      Re: Best Heater for Trailer?

      i already calculated those numbers with 1/2" of solid wood for floors, walls, and ceiling.
      ~~

      ... it was plumbed by Ray Charles and his helper Stevie Wonder

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      • #18
        Re: Best Heater for Trailer?

        Originally posted by Plumber Punky View Post
        i already calculated those numbers with 1/2" of solid wood for floors, walls, and ceiling.
        Hmmm, wow...
        "Good enough" isn't really "good"...

        Comment


        • #19
          Re: Best Heater for Trailer?

          If you only want to heat a small area, they make infrared spot heaters that run off of 120 volts. They even have some on a telescoping stand like a lamp with remotes.
          AllurePlumbing.com
          • leak detection
          • drain cleaning
          • utility locating
          • conductor fault locating
          • and other specialties.

          Greensboro NC, Winston-Salem NC, High Point NC, Thomasville NC, Kernersville NC

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          • #20
            Re: Best Heater for Trailer?

            Insulate.

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            • #21
              Re: Best Heater for Trailer?

              Originally posted by Gettinit View Post
              If you only want to heat a small area, they make infrared spot heaters that run off of 120 volts. They even have some on a telescoping stand like a lamp with remotes.
              Pretty close quarters for infrared. I'd be concerned about something catching fire with a heater like this. What's the approximate required clearance in front / around one of these models?
              "Good enough" isn't really "good"...

              Comment


              • #22
                Re: Best Heater for Trailer?

                Originally posted by BobsPlumbing View Post
                Insulate.
                Yah...but you haven't seen how I've got my rig outfitted! Maybe sometime if I find myself between jobs long enough to get bored enough to get motivated enough! <big grin>
                "Good enough" isn't really "good"...

                Comment


                • #23
                  Re: Best Heater for Trailer?

                  Originally posted by gadgetarian View Post
                  Pretty close quarters for infrared. I'd be concerned about something catching fire with a heater like this. What's the approximate required clearance in front / around one of these models?
                  I suppose it depends on how big you intend on going. I don't think you would have to worry with 120 volt model. Try calling your local electrical supply house this week. If I can get to my computer I will try to get the name of a good manufacturer. Try Googling it for particulars on the ones that your interested in.
                  AllurePlumbing.com
                  • leak detection
                  • drain cleaning
                  • utility locating
                  • conductor fault locating
                  • and other specialties.

                  Greensboro NC, Winston-Salem NC, High Point NC, Thomasville NC, Kernersville NC

                  Comment


                  • #24
                    Re: Best Heater for Trailer?

                    Thanks everyone for your feedback. I'm thinking about one of these > Residential Wall Heater (OVS Series) - residential electric heating

                    We've installed these for clients and they work great. I can install a surface mount model on the bulkhead up front out of harm's way and it should do a decent job.
                    "Good enough" isn't really "good"...

                    Comment


                    • #25
                      Re: Best Heater for Trailer?

                      We use up to 3 ceramic heaters as needed. The model we use is the Dayton 1VNW9.It has 3 heat settings as well as an adjustable thermostat. More importantly it has a knock over cut off switch mounted in the bottom as well as internal overheat protection.
                      PPE Protective Clothing

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                      • #26
                        Re: Best Heater for Trailer?

                        Originally posted by gadgetarian View Post
                        Thanks everyone for your feedback. I'm thinking about one of these > Residential Wall Heater (OVS Series) - residential electric heating

                        We've installed these for clients and they work great. I can install a surface mount model on the bulkhead up front out of harm's way and it should do a decent job.
                        At 120 volts you will need 3 of those units. One of the 240 volts/2000W model would be sufficient only if the outdoor temp is well above 5 degrees.
                        Last edited by Plumber Punky; 01-15-2013, 12:27 PM. Reason: typo
                        ~~

                        ... it was plumbed by Ray Charles and his helper Stevie Wonder

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                        • #27
                          Re: Best Heater for Trailer?

                          Originally posted by Plumber Punky View Post
                          At 120 volts you will need 3 of those units. One of the 240 volts/2000W model would be sufficient only if the outdoor temp is well above 5 degrees.
                          Thanks for your feedback PP. Right now I'm using these little guys as a temporary measure.

                          Attachment Attachment

                          At the moment the outside temp is 0'C/32'F. The temp in my trailer is 10.7'C/51'F. The coldest it has been so far this winter is about -10'C/14'F. I didn't check the temp at that time but based on the current model I suppose it's safe to say that it was probably about 0'C/32'F.

                          Unfortunately the 240VAC unit won't meet my needs because I can only count on a 120VAC, 15A circuit (at best), at whatever site I'm working at. Guess I'm limited to 1,500W.
                          Attached Files
                          "Good enough" isn't really "good"...

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