Wiring two heaters off the same 240amp power source

If all is connected to the same thermostat and only 2 is not working then you have to ohm out the windings on those heaters ,maybe they are bad

#1 you have to calculate the heatloss of your rooms,that will tell you ur wattage require. Oil filled or not,it's just as dry. As far as ur load to panel breakers, a rule of thumb is approx 3600 watts for 20 amps,using a number 12 wire. But ur wall heaterS should suffice

A lot of variables in the question you asked. First, you need to convert your square footage to cubic footage. To do that multiply your square footage by your ceiling height. Assuming you have the standard 8' ceilings, your cubic footage is 2000 cubic feet. Also, what is the maximum BTU Output of your heater. Will the heater be the only heat source?

Now, how air tight is this room: fair, average, excellent? Also, is there a door opening(s) to the rest of the interior of the house? Will the door(s) remain opening during times the heater is in operation? Is this room, a bedroom? If it is a bedroom, the maximum BTU Output can not exceed 10,000 BTU's.

If it's not a bedroom and the maximum BTU Output range does not exceed 20,000 BTU's, you should be fine, as long as this room opens into the rest of the house and the door is left open. Higher than 20,000 BTU's will cause a problem.

Keep in mind, these vent-free heaters use interior air for combustion and as far as BTU Output is concerned, more is not better. Because, you are capturing all the heat. Safe placement of the heater is very important. Always keep combustible items at least 3' from the front of the heater. And never near draperies. The back of the heater should be a minimum of 12" off the wall.

Vent-free gas appliances are very safe when used as the manufacturer intended/specified. However, they are not maintenance free and should be cleaned and serviced at least once a year. Not only to maintain proper operation and efficiency, but equally as important SAFETY.

bedroom 17x14=9ft
bedroom 17x10=7ft
bedroom11x13=6ft
livingroom/din/kit14x24=13ft

I guess it all depends on how warm you want the room. I typically sleep with mine on low in the master-bedroom with connecting bathroom. When it's not on the room is in the low 50's. When I do run it for about 5 hrs (while sleeping) it keeps the room around mid 60's.

you need to measure the height of celing size of room how many outside walls thickness of walls take this info to your local heating shop they will tell you the heat loss for each room and what size heating you need in kws you then choose the heaters you want

Bedrooms are almost always smaller than living rooms and they usually have the same amount of warm air registers. Try adjusting the louvers down in the smaller rooms and opening the living room registers wide open to balance your airflow. Good luck.

12 gauge wire sounds under sized for the application. And 20 amp 240 v breakers might be sufficient if you where wiring the heaters separately. But be sure that your wiring is not romex - because romex is an insulator and is not permitted in conduit. I would suggest that you up size your wire to 10 guage and your breaker to 30 amp as well. Then double check your heater wiring connections to insure that they're wired the same throughout.

money seems to be an issue for lots of us. but if you don't mind a coupla extra bucks get a few axial muffin fans and use them to spread out the heat pattern at your bedroom doors

I have the same heater and it works great in my bedroom (with a door). the room is about 12 x 14. For my living room and dining area I use 2 or 3 oscillating, ceramic, fan forced heaters spaced out.

As you say, logically...since heat rises, the heat comes off the top. Only 3 things that I can think of would make that heater not work: First, a factory defect (it doesn't heat period). Second, if you have it a room that is too large for that size heater. Third, if the room has no doors (such as a living room).

If you have a draft it can work to your advantage. By placing the heater in line with the draft it will actually accelerate the heat exchange process and distribute the heat faster for you.