I will bay RCA room heater type JNF-88H2 - RCA Televison & Video

You really need the model name to find that. They usually all work to a theme though

https://www.google.com/search?q=Simpson+Bay+17+x+12+hex+dome+2+room+screened+tent+manual

Probably the one in the first link and the reviews are dreadful!

https://www.google.com/search?q=Simpson+Bay+17+x+12+hex+dome+2+room+screened+tent

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Unless you live in a very mild climate, 1200 watt heaters are good to supplement existing heated rooms only. To get an idea of how much heat is supplied by this type of heater, it is about 350 btu's or about the amount of heat produced by a person walking around in the room. A typical whole house furnace output is between 75,000 and 125,000 btu's. Again, these heaters are really not designed to heat a room, just a person in the room.

Oil heaters produce no fumes or flames and feature whisper-quiet operation. Because the oil within the heater never needs to be replaced, oil-filled heaters are maintenance-free. In addition, these types of heaters are compact and portable - allowing you to carry them from room to room. Many also feature carrying handles or a set of casters for easy mobility
some of these types of heaters have a hole with a plug, that allow you to add oil, but few of these are in use today. so this being said it is most likely the heating element is failing to fully heat up the oil. parts may be found, if researched in detail on the net


also be known that the electrical componets are most likely to fail befor the oil evaporates. so look at all overheating controls and so on.

good luck,

Hello
This model is 5050 btu per hour,will cool room 10x15 or 150 sq feet.

well usually what works for me is a small heater on near the tv or just keeping the room above 65 degrees. There is a way on some tv's to turn off the power saver and that will keep your tv warm. But on others you cant turn it off so you have to deal with the heater or keeping the room warm cause that tv wont turn on for anything exept if its warm....

If they are all the same make/model they will only have a few frquencies they work from. If there is a slide switch or something that is numbered 1 to 4 or whatever, set them all to the same and 1 remote will work them all.(or should).

The problem is that it is burning up all the oxygen in the room. That is what makes the CO level high. He needs to either leave a door, or something open, and possible even a little fan to keep the Oxygen that is IN the room mixed. I figure he is working low, and there is not much air moving around him.
Get fresh air INto the room and the CO will not be a bother.

1500w / 1000w = 1.5 kwh. Every hour you run (assuming it is at 100% peak power) you use 1.5 kw. Just multiply that rate by how much it your power company charges per kwh.

Estimating high at 10 cents per kwh it would be $1 for every 10 hours you run the heater, or $2.40 per day, or about $72 per month if you ran it 24/7 for 30 days.

It is FAR cheaper to use these types heaters to heat one small room than an entire apartment or house if you are only in one room the majority of the time.

measure each room you want to heat. multiply the length x width, this will give you the square footage of the room to be heated, multiply that by 10 and that is the number of watts needed to heat the room using 220/240v baseboards.