Home News Blog

7 Steps To Test Water Heater Thermostat

Jan 07,2022

When you check your electric water heater, you will notice two thermostats on the unit-one at the top, and one at the bottom. Each of these devices controls two different heating elements.

If you turn the hot water tap and cold water runs out, then the upper thermostat is damaged. But if the water is hot that becomes later becomes cold, then you have a damaged lower thermostat.

However, you will need to know how to test a water heater thermostat to find the faulty unit. As soon as you complete this task, you can fix it. Whether you’re using propane tankless water heater or any other types, the thermostat works great to regulate the temperature. But first, let us sNormally, an electric water heater has three main features. They include a heating element, a thermostat and a switch to prevent the unit from excess heat.

You can use a thermostat to produce heated water to suit different purposes. For instance, the level of heat required for washing might be different from the one needed for showering. Furthermore, it controls the current that moves to another thermostat or heating element.

An electric heater with a storage tank of at least 30 gallons comes with two heating elements with a thermostat on each of them. The thermostat on top acts as the primary one while having a high limit switch. But the lower one detects any change in the temperature of the water.

Both thermostats (on the same water heater) do not have the same features. They even do not work at the same time.

ee how a thermostat works.

he high limit switch is found on the location as the upper thermostat. It also has a button that stops it from working, especially when the water goes above 170F. To restore it to default settings, press this button.

To set the thermostat on a water heater, you will need to adjust both thermostats to similar temperatures. Alternatively, you can adjust the upper element to a lower temperature thereby allowing the one underneath to activate first.

For water heaters that have smaller tanks (a maximum of 30 gallons), a single thermostat and heating element handle temperature control. But they use a high limit switch like the larger water heaters.

How To Test Water Heater Thermostat

Dec 30,2021

How do I find a Thermostat in my water heater？

7 Steps To Test Water Heater Thermostat

Latest News

Smart HVAC for Schools and Offices: Solving Energy Challenges with LoRaWAN TRV

LoRaWAN vs Zigbee for Commercial HVAC: Why LoRaWAN is Superior for Large Buildings

Commercial LoRaWAN TRV ROI: Why Battery Life is the #1 Factor in Heating Retrofits

BACS Compliant LoRaWAN TRV: A Guide to Meeting EN 15232 Standards

Active ΔT vs. Passive Modulation: Why SA905-T is the Superior Hydraulic Solution

Eliminating UFH Hot and Cold Spots: How Saswell SA905-T Ensures Uniform Heat Distribution

Why a Stepper Motor is Better Than a Wax Element Actuator for ±1.5℃ UFH Control?

What is ΔT Automatic Balancing Control and How Does It Fundamentally Differ from Standard Thermostatic Actuators?

2025 HVAC Thermostat Trends: Color Displays and Deep Customization Define the Market – Why is 4-Inch the Optimal Size?

HVAC systems. HVAC systems are classified as either self-contained unit packages or as central systems

Replacing a Water Heater Thermostat in 8 Steps

What's 24 volt thermostats

6 Best Boiler Thermostats – Smart, WiFi Thermostats For Boilers

The Best Thermostat for Electric Floor Heating Systems

Saswell Sprinkler Timers for Hoses

Best WiFi garden hose timers

What is a Fan Coil Thermostat?

Installing a Thermostat in Your Home

What’s Does a Smart Thermostat Do?

Setting Your Thermostat for (Energy) Savings in Winter

Absorption Heat Pumps

What are HVAC controls?

How to Troubleshoot a Defective Thermostat on An Electric Water Heater

How To Replace A Faulty Thermostat On An Electric Water Heater

How To Test Water Heater Thermostat

How do I find a Thermostat in my water heater？

LinkTap G2 switch

What is a smart thermostat?

The Best Smart Thermostat

The Best Sprinkler Timers and Controllers for Your Lawn and Garden-Flora

Smart Irrigation Controllers Save Water and Money

Smart irrigation controllers have Difference Between Weather-Based and Soil Moisture Sensors

Best Wifi Water Timer

Best smart sprinkler controller

Remote sensors vs. Remote control thermostats

Which End of the Radiator To Fit the TRV

Changing an Old for a New TRV or Changing a Lockshield Valve for a Thermostatic Radiator Valve

Common Problems with TRVs and Maintaining Thermostatic Radiator Valves

One Radiator Not Getting Hot

The Benefits and the Disadvantages of Having TRV's Fitted

What Is a TRV or Thermostatic Radiator Valve?

Bathrooms: A TRV No-No

How to Unstick a Thermostatic Radiator Valve?

What's Two wire thermostats and Millivolt thermostats?