Compared to gas or wood-burning counterparts, electric fireplaces replace much of the frustration and work with a simple flick of a switch. Gas fireplaces can be noisy, with built-in fans running at high blast. Normally, electric fireplaces run quietly, with the only major noise being the crackling of the "fire." However, due to malfunctions or simple wear and tear over the years, sometimes they may start making other, less ambient noises. Before you have a repairman come to look at your fireplace, though, try a few methods yourself to see if you can restore the peace that the electric fireplace brings.
Tighten up any loose connections in the basic hardware components of the fireplace. Rattling may be the cause of some of the extra noise, so this may be the easiest fix. Double-check access panels to ensure they fit snugly.
Check the tubing that connects the equipment. If any look bent, gently bend them back into place using a hammer or wrench.
Clean out the fan. As with any fan/blower, your fireplace's will likely accumulate a lot of dust and lint over the months. A simple cleaning with dusting cloths will allow it to blow clean, quiet air.
Check the fan belt. If it is worn or sticking, spray a fan belt dressing on it. Replace if necessary, or adjust it if it is too loose or too tight.
Open the back panel of your fireplace. You will see the main rod; if this rod is not properly lubricated, you may hear extra noises. Use lubricant to ensure it moves smoothly and easily.
Inspect the internal wiring, particularly if you are having any visual or operational issues as well. Wire connections should be secure.
Consult your owner's manual if none of the above seem to help; you may need to replace your flame motor.