Plumbers 911 referred contractors provide expert water heater repair
10 Jul

Is your hot water heater making noise? What’s wrong and how to fix it

Water heaters are known to make a certain amount of noise. It doesn’t necessarily mean anything is wrong. But there are certain water heater noises that indicate a serious problem that will require a HVAC specialist like the contractors at HVAC 911. We may need to flush your water heater, replace a part or outright replace the entire unit.

Here are a few reasons why your water heater could be making noise, and what to do about it. If you have any questions, contact HVAC 911 to be connected to a HVAC tech in your area.


Hard water is causing a rumbling or popping sound

Sediment buildup often occurs in hot water tanks, especially if you live in an area that has hard water. Mineral rich hard water leaves a residue that builds up into sediment that can clog the bottom of your tank. Collected sediment will trap water, which creates pressure as the water forces its way through the sediment. This can create a popping or hissing sound.

That’s why we recommend annually flushing out your hot water tank by a HVAC specialist like the contractors at HVAC 911. They can flush and drain the tank to remove sediment build up and lengthen the lifespan of your hot water tank and improve its performance. 


Ticking sounds are caused by changes in water pressure

Ticking sounds can result from changes in water pressure, loose pipe straps and heat trap nipples. Fortunately, these sounds are perfectly normal and not cause for concern. If the sound is annoying, you can adjust the straps on loose pipes to dampen the noise. Lowering the temperature of your water heater may also eliminate the ticking sound.


Screeching sounds may be caused by a bad relief valve

If your water heater is making a high pitched screeching sound (much like a tea kettle), water flow through a valve may be significantly restricted. Check the temperature and the pressure relief valve at the side of the tank. This valve allows water to escape if the pressure gets too high. If this valve is the source of the noise, immediately turn off the gas, electricity, and water to the tank and call HVAC 911, for professional help.

If it’s not this valve, the sound may be coming from the waterline. Make sure the valves are fully opened. Check the lines for any kink or deformations that may be restricting the flow of water. If there’s a problem with the lines, you may need to contact the HVAC specialists at HVAC 911.


A water hammer is creating a banging sound in your pipes

A water hammer occurs when water is forced to stop or change direction abruptly, creating a pressure surge within your system. This surge can lead to deformed pipes and can also expand and deform your hot water tank. If this happens frequently, call HVAC 911. One of our local HVAC technicians can install a water hammer arrestor or pressure-reducing valve to prevent damage.


Need a HVAC technician? Call HVAC 911

If you need a HVAC specialist, call HVAC 911. We are a network of HVAC techs that can send a local specialist to your home to inspect and repair your water tank. 

Our HVAC Techs are specially trained, licensed, insured and bonded. They have undergone a rigorous background check and drug testing. Find a local HVAC 911 tech in your area today!