Get the comfort you need at a price you can afford! While you're at it, go ahead and give all of your walls a good scrubbing wipe off any loose dust with a soft cloth, then gently scrub off any dirt with an all-purpose cleaner that's safe for your walls (test in an inconspicuous area first if you’re unsure.) don’t forget the molding! The root of the problem comes from the boiler overheating the. Thank you for using wpj heating, we wish you a great.