Why Is My Hot Water Pressure Low?
If only the hot water trickles while cold runs strong, the problem is on the hot side—often the heater. Here's what's going on.
Read more →Why Is My Water Too Hot?
Water that's too hot wastes energy and risks scald burns. Here's why it happens and how to set it safely.
Water that comes out dangerously hot isn't just uncomfortable—it's a real scald hazard, especially for young children and older adults. Here's what causes it and how to bring it back to a safe temperature.
The right temperature
For most homes, 120°F is the sweet spot: hot enough for comfort and sanitation, efficient, and safe against scalding. Many units leave the factory set to 140°F, which scalds in seconds and wastes energy.
Common causes of too-hot water
- The thermostat is simply set too high (most common)
- A failed thermostat stuck in the 'on' position
- A stuck or faulty gas control valve
- On electric units, a shorted element heating continuously
How to adjust it safely
- On a gas unit, turn the thermostat dial on the gas valve down toward 120°F
- On an electric unit, switch off the breaker, then adjust both upper and lower thermostats behind the access panels
- Wait a few hours and test the water temperature at a tap
- If it stays too hot despite a low setting, the thermostat or valve has failed
Water at 140°F can cause a serious burn in about 5 seconds; at 120°F it takes minutes. For homes with kids or seniors, 120°F is the safe standard.
When it won't turn down
If you've lowered the setting and the water is still scalding, a component has failed—usually the thermostat or gas valve stuck open. That's a repair worth doing promptly, both for safety and energy.
We'll make it safe
If your water is dangerously hot and won't adjust, don't wait. We'll diagnose and fix the faulty part fast. Call 973-834-8833.
Good to Know
Frequently Asked Questions
What temperature should my water heater be?
120°F suits most homes—comfortable, efficient, and far safer against scalding than the 140°F many units default to.
Why is my water scalding even on a low setting?
A failed thermostat or a gas valve stuck open can heat continuously regardless of the setting. That needs a prompt professional repair.
Need a hand from a licensed NJ water heater pro? Hot Water NJ installs, repairs, and replaces every type of water heater across Northern New Jersey—usually same day. Call 973-834-8833 or request a free estimate below.