Your water heater is a key part of your household, providing pleasantly warm showers or the higher temperatures needed to clean dishes or launder clothes. Like any piece of machinery, your unit may make noise from time to time. However, some hubbubs are worth noting, as they may indicate underlying problems. Here are four every homeowner should know. 

A Guide to Water Heater Sounds

1. Sizzling & Hissing

If your water heater sounds like bacon cooking in a frying pan, this might indicate that water isn’t flowing properly from one or multiple valves. First, listen closely to the temperature and pressure (T&P) release valve, usually found on the side of the tank. If this is the source of the noise, turn off the power and water supply and contact a plumber immediately — this device safeguards against explosions. If this doesn’t seem to be the origin of the problem, check the water inlet valve to ensure it’s fully open and isn’t leaking. If all valves seem fine, it may actually be a sediment issue. 

2. Crackling & Popping

Excessive sediment buildup within the tank can cause many sounds, from crackling and popping to pounding and squealing. Water contains minerals like calcium carbonate. When heated, they turn into solid particles that drift to the bottom of your tank. Water bubbles up through these deposits, resulting in a racket. You can correct this issue by having your tank flushed and a water softener installed to remove mineral ions. If your unit is nearing the end of its lifespan — most last about 8 to 12 years — it may be time to replace it. 

3. Knocking & Banging

Occasional ticking is normal and typically just the result of minor pressure adjustments. However, loud hammering is cause for concern. If normal water flow into your water heater is interrupted, the abrupt change in velocity can produce a noisy shock wave that can impact your entire plumbing system. Left unattended, this can eventually damage your pipes and valve fittings, so consult a plumber. They may recommend installing an expansion tank or a water hammer arrestor to absorb the impact. 

Identifying and resolving the source of water heater sounds are tasks best left to professionals. For all your residential and commercial plumbing needs, turn to Bernie Buchner, Inc. in La Crosse, WI. Since 1952, they’ve provided the tri-state area with prompt assistance, honest service, and quality workmanship. They’re proud to offer upfront pricing. Contact them at (608) 784-9000​​​​​​​ for a free estimate. Visit them online to read testimonials from satisfied clients.