Thermo-Pond 3.0

  • The world's most successful and efficient low-wattage pond de-icer

  • Uses only 100 watts 

  • Maintains a hole in backyard pond ice for just pennies a day

  • Floats on top of the water

  • Thermostatically controlled never to get hot

  • Completely safe when used with a pond liner or plastic pond

  • Fish friendly - assists the escape of toxic gases all winter long to help maintain a toxic-free environment for fish living under the ice

  • Tested in northern Wisconsin at temperatures of 30° below zero Fahrenheit.

  • MET Listed

  • One-year limited warranty



For ponds up to 1000 gallons! The worldʹs most energy efficient pond heater! Thermo-Pond is a unique patented pond heater that keeps a hole through the ice in backyard ponds for just pennies a day. In fact, Thermo-Pond can save up to $30.00 a month in electricity VS. those high wattage stock tank style de-icers! Just think, Thermo-Pond pays for itself in as little as 2 months. Thermo-Pond floats on top of the water and is thermostatically controlled to never get hot. Unlike some other heaters, Thermo-Pond will never burn a pond liner or plastic pond. It naturally allows the pond to ice over while maintaining a hole through the ice. Allowing that gas exchange can help keep a healthier environment during the winter months Thermo-Pond should be used in ponds that are deep enough to allow plenty of livable water under the iced portion of the pond. One year limited warranty.


Additional Info

Item # 8001
Cord Length 12 ft.
Wattage 100 watts
Safety Listing MET
Dimensions 12" L x 12" W x 4" H
Item Weight 3 lbs.
Shipping Package 4 Color Box
Shipping Package Dimensions 14" x 14" x 5"
Case Pack Qty 6
Case Pack Dimensions 25.5" x 13" x 12.5"
Case Pack Weight 18 lbs.
Printable UPC No
Unit UPC 655199080014
Case UPC 655199180004
Warranty 1 Year

Care & Instructions

Minimum Depth Requirement

Please make sure your pond has a depth of at least 18 inches.

Already Frozen Ponds

  • If the ice on your pond is more than 2 inches thick, drill a hole with an ice auger and place the Thermo-Pond over the hole. Do not chop through the ice in smaller ponds as the shock waves can damage or kill your fish.
  • If the ice is only 1 or 2 inches thick, place the Thermo-Pond on the ice and it will melt its way through the ice.
  • Try to position your Thermo-Pond within arm’s reach of shore to avoid walking on thin ice.
  • Snow and ice should be removed from the top of your Thermo-Pond.
  • 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

Product-Specific Questions

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.

Is there a minimum required pond depth for the Thermo-Pond 3.0?

The pond needs to be at least 18” deep. The Thermo-Pond 3.0 is designed to keep a 12” hole in the ice directly around the Thermo-Pond only.

How can this use only 100 watts?

The Thermo-Pond 3.0 Floating Pond De-Icer is an energy efficient way to allow gas exchange for your fish while wintering. That is why it is designed to only keep a 12 inch hole in the ice. Essentially, it functions as a chimney for oxygen exchange in larger ponds.

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.

When my pond de-icer runs, foam forms on top of the water. Is this normal?

Yes, the foam buildup is harmless and completely normal for this product. The difference in temperature between the water inside the ring and the water outside the ring creates foam, which is why there is no foam buildup when the deicer is off.

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 inside of the ring of the bottom half of the Thermo-Pond. It will begin to warm within about 5 minutes and will shut off automatically shortly after.

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.

General Questions about Outdoor Heated Products

How long is the cord?

The cord is 12 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.

Temporary use of a UL listed cord is fine, but consult your electrician for the proper cord for your application. 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.