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K&H Thermo-Pond Perfect Climate Submersible Pond Deicer

Original price $86.99
Current price $54.98
  • Low power consumption of 300 watts
  • Controlled thermostatically
  • Excellent for pre-formed or small ponds up to 18" deep
  • Won't burn pond liners or preformed ponds
  • Use with water or air pumps thanks to its inlets
  • 15 ft. cord / MET Safety Listed


The Thermo-Pond Perfect Climate Submersible Pond De-icer was designed specifically for small and preformed ponds up to 300 gallons and 18 inches or less in depth. Even in sub-zero temperatures, it prevents these ponds from freezing over and facilitates the gas exchange needed to help pond fish survive the winter.


While other high-wattage de-icers can drive electric bills through the roof, the K&H Perfect Climate Submersible Deicer is easy on your budget. It consumes a mere 300 watts of power and operates for just pennies a day.

Internal thermostats automatically turn the K&H Perfect Climate Submersible Deicer on and off as needed to keep your pond from freezing over. Unlike some other heaters, K&H Pond Deicers will never burn a pond liner or plastic pond.


The K&H Perfect Climate Submersible has been tested and certified by MET Labs to meet their high standards for electrical product safety. This deicer will not burn your pond or liner and will not harm your fish.

Finding the deicer that is right for me

K&H has solved the problem of having to use those high wattage deicers by creating a whole line of de‐icers along with a convenient zone chart for you to choose the correct de‐icer. (See the K&H Pond Chart below) Simply find your zone and use the chart to match up your pond size to find the deicer that is perfect for you.

**Warning: Deicer must be in water at all times. Do not operate when heating element is not fully submerged in water.

  K&H Perfect Climate Deluxe Pond Deicer - 250 Watt K&H Perfect Climate Deluxe Pond Deicer - 750 Watt K&H Perfect Climate Deluxe Pond Deicer - 1500 Watt K&H Thermo-Pond 3.0 - 100 Watt K&H Perfect Climate Submersible Pond Deicer- 300 Watt
Wattage 250 Watt 750 Watt 1500 Watt 100 Watt 300 Watt
Diameter 6" Round 6" Round 9" Round 12" Round 9" Round
Cord Length 12' cord 12' cord 12' Cord 12' cord 12' cord
Thermostat Type Internal - Preset Adjustable by user Internal - Preset Internal - Preset Internal - Preset
Floating or Submersible Floting & Submersible Floating & Submersible Floating & Submersible Floating Only Submersible Only
Safety Listing MET Listed MET Listed MET Listed MET Listed MET Listed
Warranty 2 Year Waranty 2 Year Warranty 2 Year Warranty 1 Year Warranty 2 Year Warranty
Recommended Pod Size Use Chart Below Use Chart Below Use Chart Below Up to 1,000 gallons per deicer Up to 300 gallons & 18" deep or less

K&H Pond De-icer Zone Chart

Care & Instructions

Pond Size Requirements

This pond de-icer is designed for ponds up to 300 gallons.

Already Frozen Ponds Using an Ice Auger

  • If ice has already formed on the surface of your pond, drill a hole in the ice with an ice auger. Do not chop through ice as the shock waves can damage or kill your fish.
  • Then place your heater through the hole and run your cord to a properly grounded outlet protecting the cord from damage.

Without an Ice Auger

  • If you do not have access to an ice auger, place a large pan or bucket with water on the surface of the ice. Place your heater into the container and plug the heater into a properly grounded outlet. The heater will heat the water and container, melting a hole in the pond ice.


  • Always keep safety as your number one priority. Never walk on thin ice.
  • Please consult your pond professional on tips for overwintering fish.

Product Q&A

At what temperature should the de-icer turn on?

Our Thermo-Pond units are thermostatically controlled to keep the average water temperature just above freezing. They feature internal thermostats and will turn on and off as necessary to keep the pond from freezing over.

Will my fish be safe with this deicer in the pond?

Your fish are quite safe, even when they do come in contact with the heating element of the deicer. The heating element will never get hot to the touch as long as it is submerged in water. You can actually reach down into the water and put your finger on the heating element and it will not burn you.

Please rest assured that your fish are quite safe when the Thermo-Pond Perfect Climate deicer is in the water. In the middle of winter when it gets really cold you’ll find your fish huddling around the deicer to keep warm, but the deicer will never harm them.

How can I test my pond de-icer outside of a pond?

You can test the Thermo-Pond by placing it in the freezer for about an hour. Then remove the Thermo-Pond and plug it directly into an outlet. Hold onto the bottom, making sure not to touch the heating element, and it will warm up within minutes. When you feel the warmth, immediately unplug it to prevent damage.

Does the cord actually sit in the water?

Yes, the cord does come out of the bottom of the deicer and will be in the water. If the cord were placed outside of the water, it would tip the unit sideways, causing the heating element to be exposed to the air, which is not desirable. The heating element must always be completely submerged under water to keep it cool.

I just purchased this item of yours but don't know how to connect it to my pond aerator. I see the 1/4 and 3/8 inch holes to insert tubing but don't really know how to hook it up.

Determine whether the ¼” or ⅜” hole is more appropriate for your aerator tube. Starting from the bottom where it says either ⅜” pump inlet or ¼” pump inlet, push the tube a few inches through one of these holes and up toward the gray plastic. That’s all there is to it!

How long is the cord?

The cord is 15 feet long.

Can I use an extension cord with this product?

MET requires that all manufacturers put the extension cord statement “Do not use with extension cord” on every item that is MET listed by UL 499 standards. This is because they cannot test every extension cord on the market in conjunction with our products for safety. Also, MET suggests that an extension cord is not recommended as a permanent fixture and should only be a temporary solution when using any electrical product.

For more information on MET safety testing, please visit their website at

How long can a heated product be plugged in?

MET Safety Laboratories suggests unplugging the product if you leave your home on an extended vacation, as they do with any electrical appliance. Otherwise, it is designed for 24/7 operation and you can leave it plugged in all day. This item has been certified by MET labs to adhere to strict electrical safety standards. For more information, please visit

Is there an off/on switch?

There is not an off/on switch. It is always on when plugged in.