Why Do More Hot Water Systems Fail in Winter?

Ever noticed your hot water system failing right when you need it most in winter? During colder months, hot water systems work harder to heat water from a lower temperature. This extra strain affects the heating elements, thermostat, valve, and tank in electric systems. The good news? Many of these issues can be repaired affordably.

Thermal Shock

Heating cold water quickly can cause Thermal Shock. This happens when cold water enters an already hot system, creating rapid expansion and contraction. The sudden temperature change strains the tank, welds, thermostat, relief valve, and other components. Older systems face a higher risk of failure due to this stress.

How to Prevent Failures

Regular maintenance helps prevent hot water system failures. Follow the manufacturer’s maintenance schedule. Check that the thermostat is set correctly and adjust the temperature if needed. Test the relief valve to ensure it functions properly. If your system is aging, consider upgrading to a newer, more efficient model.

Troubleshooting a Faulty Hot Water System

If you have no hot water, try these quick checks before calling a technician:

Electric Systems

• Ensure the circuit breaker is on and the system has power.

Electric & Gas Storage Systems

• Slowly lift the pressure relief valve on the tank.
• If the water from the valve is cold → Call an electrician.
• If the water from the valve is hot but household water is cold or lukewarm → Call a plumber.

Important Reminder

Hot water systems are not DIY appliances. Always hire a licensed tradesperson for repairs.