Do any DUers have a Hydro-Sil wall mounted electric heater?

[Paper Roses]

I have had mine for many years. Lifetime guarantee. Having some funny problems and need advice.
Guess what? Out of business according to my searches.
It is a 70 inch wall mounted, hard wired heating unit that is used to heat one room addition to my house. Very expensive to operate but the oil company cannot access this area so I have no choice.

I am wondering if there in an alternative to this (1500 Watt) baseboard unit that could do the job.
I will get through this winter but am not sure this unit is safe anymore. It is making strange clicking noises and seems to be emitting some kind of particulate that had dirtied my curtains and walls.

Need any advice you can give. Funds are limited so I must be careful as I look for something else...plus the cost of an electrician is through the roof in my area. Any suggestions would be appreciated.