Phoenix-area water carries a heavy load of dissolved calcium and magnesium. Inside your water heater, that mineral content settles out as scale, and it's the number one reason Valley water heaters die years ahead of schedule.
What scale buildup actually does
- Sediment blankets the bottom of the tank, forcing the burner to work harder and run longer.
- That popping or rumbling sound? Water boiling up through a layer of scale.
- Scale eats anode rods faster, which accelerates tank corrosion and leaks.
- Tankless units suffer too: scale narrows the heat exchanger until flow and temperature drop.
How to fight back
Flush the tank once a year to clear sediment, twice if your home doesn't have a softener. Have the anode rod checked every couple of years and replaced when it's spent. For tankless systems, an annual descaling service keeps the heat exchanger clean and the warranty valid.
When replacement beats repair
If your tank heater is past 10 years old, leaking from the tank itself, or producing rusty water, replacement is almost always the smarter spend. Modern units are noticeably more efficient, and we can usually swap one out the same day.
Water heater acting up?
Airpex plumbers repair and replace tank & tankless water heaters across the Valley. Upfront pricing, same-day service.
(602) 842-6750