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Dennis12's avatar
Dennis12
Explorer
Sep 16, 2016

Electric heaters

Does anyone know of a electric heater with more than 1500 watts?
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Dennis12 wrote:
    Does anyone know of a electric heater with more than 1500 watts?


    Several however I do NOT recommend them
    Some need 240 volts, no good on a 30 amp circuit
    ONE that I know of is 120 but it's been 16 years since I bought it Will try to find it. I still do not recommend it

    Multiple 1500 900 watt (1000 or less) is what I recommend without modifying the RV

    Why: The type of outlet they use in an RV is rated 15 amps. but not for long. if you hit it with a 12 amp load (1500 watt heater) there is a HIGH chance of failure. Had it happen to me, others have as well. Depending on the failure and how swiftly you detect it your RV may become excessively warm..... as in Here comes the fire department and a total loss (Rv fires are nearly always total loss)

    What I did: I installed two 15/20 amp outlets (actually 3) in the RV. These are wired each to a single breaker all its own.. with 12 ga wire, they are fully capable of delivering over 2,000 watts of power Wire is bent around a properly tightened Screw NOT SHOVED INTO A PUNCH DOWN BLOCK, NOT POKED IN A HOLE BUT BENT AROUND A PROPER SCREW.

    The Moral of this: Upgrade wiring.

    Got to change loads in the washer/dryer will do research and finish when I return.

    Ok could not find the item I owned but this is the class. YES these are evaporative coolers:
    Ebay

    The one I had had a 2,000 watt heater in it. Strange it did NOT blow a 15 amp breaker )(Though I checked it with a Kill-a-Watt and it was drawing 1900 watts or more (The KAW has a 15 amp limit too, I did not test for long)

    It also overheated an outlet in the RV. Other than being all white it looked a lot like the one shown in the link, and without trying to see if I still have the owner's manual (not going to do that) I think it was a'Gator' brand. But as I said, been 16 years.
  • I have a very old 1800w hair dryer, not sure where/when I got it, sure does get hot though. I've never seen more than 1500w heaters in stores, I'm guessing it's a safety thing. Sell a 20 amp heater and some dufus will run it on a 15 amp circuit and burn his house down.

    I typically run two 1500w ceramic heaters while winter camping (typical temp outside 10-20F.) When the temp goes below 0, the propane furnace is called into service as well.

    Each heater is on it's own 15a circuit breaker. If I need to microwave or boil water in the hot pot, one heater is shut off first so not to overload.
  • There are 2 circuits in most newer houses, 15 amp and 20 amp.
    15 amps x 120 volts = 1800 watts.
    20 amps x 120 volts = 2400 watts.
    They produce heaters with a max of 1800 watts which could run on a 15 amp circuit but it would be maxed out and could trip the breaker. It would be better if you could run it on a 20 amp circuit.

    How many amps is the wiring/circuit that you plan to run it on? If it's 15 amp I would probably lean more to 1500 watts or less. It's one of those things that you may have to try. If returning the item is a hassle that may matter too.

    I always placed mine on the open oven door so it might not catch the rig on fire if it goes into melt down as I have had 2 of them do that over the years. Some consider them a temporary solution for heating until a proper heating system can be sized. Some will only use them while awake!!!!
  • mike-s wrote:
    There's at least one 1800 W model. It's way overpriced, though.

    $194.90 !!!!! No thanks. Read the fine print at the bottom. $19.95 is a 30 day trial.
  • As mentioned above, that's all that anyone should plug into a standard household wall plug (15-20 amp) so there would not be much of a market for this kind of a device. There certainly are commercial heaters with higher output but they have to have special wiring.
  • Dennis12 wrote:
    Does anyone know of a electric heater with more than 1500 watts?

    That's pulling about 13 amps and about the max that should be pulled through normal house/RV wiring with other things on the same circuit. Anything bigger could start blowing fuses and breakers if anything else is on the same fuse/breaker. If you had a dedicated circuit you might get away with something a little larger if you could find one.

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