If a fluorescent bulb is making the noise the fixture s ballast might need to be replaced the ballast is the part of the fixture that controls voltage to the bulb.
The roof alarm is making a noice.
The beeping alarm is to warn that the roof is not fully open and locked.
If your boiler is knocking your circulation pump may be on its way out.
Department of energy suggests placing shims under one side of the radiator to tilt the excess water back toward the pipe or steam trap.
Wall or attic sounds scratching or scurrying from within a wall or ceiling.
10 people found this helpful.
This movement creates the popping noise.
The patter or even the roar of falling rain or hail popping and cracking noises perhaps due to thermal expansion and contraction of roof coverings metal roofing or roof structure and transmitted noises from other external sources such as low flying aircraft or nearby trains or auto truck traffic from a nearby highway.
If you hear rattling start by checking the screws or bolts holding any.
When you open the roof keep holding the button for about a further 10 20 seconds you will hear a slight motor whir at the end of this the roof is completely locked open.
The sun hits your roof and heats it up.
First make sure the radiator inlet valve is fully open as a partial opening could result in some noise.
Rattling is a common noise with air conditioners as the various fasteners throughout the machine can eventually come loose.
If that doesn t end the sound replace the dimmer.