With winter upon us and freezing temperatures taking hold, ensuring your horses have access to fresh, unfrozen water is essential. Tank heaters are a reliable tool to keep water troughs ice-free, but they come with their own safety concerns. Here are some tips to help you use tank heaters safely and effectively.

1. Inspect Before You Install

Before plugging in your tank heater, inspect it carefully for any damage. Look for frayed cords, cracked insulation, burnt plug ends, or signs of wear and tear. Replace any damaged components immediately to avoid electrical hazards.

2. Use a GFCI Outlet

Always plug your tank heater into a Ground Fault Circuit Interrupter (GFCI) outlet. This type of outlet protects against electrical shock by shutting off power if it detects a fault. If you don’t have a GFCI outlet, consider using a portable GFCI adapter like this: https://amzn.to/3VkB0Gi.

3. Secure the Heater Properly

Ensure the heater is securely placed or installed according to the manufacturer’s instructions. Submersible heaters should sit at the bottom of the trough, while floating heaters should be tethered to prevent them from drifting near edges where horses might damage them or pull them out.

4. Protect the Cord

To prevent horses from chewing on the cord, use protective coverings such as conduit tubing or run the cord through PVC pipe. Secure the cord out of reach whenever possible to eliminate risks.

5. Monitor for Stray Voltage

Stray voltage can occur if there’s a fault in the electrical system, causing horses to receive mild shocks when they drink. Test for stray voltage regularly with a voltmeter (like this one: https://amzn.to/49mkVpd), especially if you notice your horses avoiding the water.

  • For testing horse water troughs, set the dial on your voltmeter to AC Voltage (VAC). Insert the black probe into the grounding hole of an outlet or extension cord, and place the tip of the red probe into the water in the trough. If the meter shows a reading above zero, this indicates the presence of stray voltage in the water which could mean your horses are getting shocked when they drink.

6. Keep Water Levels Consistent

Ensure that the water level in the trough is appropriate for the type of heater you’re using. Some heaters can overheat or malfunction if the water level gets too low. Regularly refill the tank to maintain proper function.

7. Clean the Trough Regularly

Dirt and debris can accumulate in the trough and around the heater, reducing efficiency and potentially causing damage. Clean the tank and heater regularly to keep them in optimal condition. Be sure to unplug the heater if you are going to clean it, to avoid getting burned. It might need a little time to cool off before it is ready to be cleaned.

8. Use the Correct Heater for Your Tank

Choose a heater that’s appropriate for the size and type of water tank you’re using. An improperly sized heater can lead to overheating or insufficient performance.

9. Use Appropriate Extension Cords

When using extension cords for your tank heater, always choose heavy-duty, outdoor-rated cords designed to handle the required wattage safely. Check the gauge rating—lower gauge numbers indicate thicker wires capable of carrying more power. Using an undersized or low-quality cord can lead to overheating, voltage drops, and even fire hazards. Always match the cord’s amp capacity to your heater’s requirements, keep connections dry and elevated, and inspect cords regularly for wear or damage to ensure safe and efficient operation.

10. Supervise During Initial Use

When you first install a tank heater, monitor its operation to ensure it’s functioning correctly and your horses are comfortable using it. This allows you to address any issues before they become serious.

11. Have a Backup Plan

Always have a backup plan in case your tank heater fails. Keep an extra heater on hand, or use insulated trough covers and regular ice-breaking as a temporary solution.

Tank heaters are a valuable tool for keeping water accessible during freezing temperatures, but their safe use is critical to protecting your horses and your property. By following these tips, you can enjoy the benefits of ice-free water while minimizing risks and ensuring your horses stay healthy and hydrated all winter long.

Stay safe and warm this winter, and don’t hesitate to reach out with any questions or additional tips for tank heater safety!

Una
Author: Una

Una moved to Colorado in 2007 and started the Colorado Horse Forum as a way to meet other equestrians in the area. Una now rides and competes in dressage. She operates a small dressage horse breeding program in Castle Rock.

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