Lake and Pond De-Icers
Lake and Pond De-Icers
Winter ice can put tremendous pressure on docks, boats, piers and other waterfront structures. A properly sized and positioned pond or lake de-icer keeps water moving around these structures, helping maintain an open-water area and reducing the risk of damage caused by expanding and shifting ice.
American Aeration offers pond and lake de-icers from leading manufacturers including Kasco Marine, Ice Eater by Bearon Aquatics and Scott Aerator, along with dock mounts, controllers and other installation accessories. Whether you're protecting a residential dock, boat, marina or other waterfront structure, choosing the right size and installation method is important.
Are you a duck hunter looking for options to maintain open water? We can help you with that.
Ice Damage Can Get Expensive Quickly
Expanding and shifting ice can lift dock pilings, damage floats and hardware, crush dock components, and damage boats left in the water. A properly installed de-icer is inexpensive protection compared with repairing a dock or waterfront structure after winter damage.
How Does a Pond or Lake De-Icer Work?
A de-icer is a submersible motor and propeller designed to move large volumes of water. It doesn't heat the water. Instead, the propeller circulates relatively warmer water from below toward the surface. This moving water helps prevent or reduce ice formation in a targeted area.
The direction of that water flow matters. A de-icer positioned vertically tends to produce a more circular open-water area. Angling the unit directs the flow outward and can create a longer area of open water. This makes angled installations particularly useful along docks, around boats and in slips where water needs to be moved in a specific direction.
Choosing the Right De-Icer
Choosing a de-icer isn't simply a matter of buying the largest motor available. Horsepower is important, but several factors determine how much water a de-icer can keep open and how effectively it protects a structure.
- Winter temperatures: Colder conditions generally reduce the area a de-icer can keep open.
- Horsepower: Larger units produce more thrust and generally protect a larger area.
- Water depth: A de-icer needs access to deeper, relatively warmer water to work effectively.
- Mounting angle: Vertical and angled installations produce different coverage patterns.
- Shape of the area: Protecting a long dock may require a different installation than maintaining open water around a boat.
- Obstructions: Pilings, seawalls, boats and other structures can change water movement.
For large docks, marinas or unusually cold locations, several smaller de-icers positioned strategically can sometimes provide better protection than relying on one unit to circulate the entire area.
Compare Pond & Lake De-Icers
Most propeller-style de-icers operate on the same basic principle, but horsepower, motor design, electrical requirements, mounting options and available controls vary by manufacturer. American Aeration carries several options so the system can be matched to the application rather than simply choosing a de-icer by brand.
Kasco Marine De-Icers
Kasco offers 1/2, 3/4 and 1 HP de-icers for residential, commercial and marina applications. Both 120V and 208-240V configurations are available on selected models, along with multiple cord lengths and several mounting options.
| Model | Horsepower | Voltage | Running Amps | Thrust |
|---|---|---|---|---|
| 2400D | 1/2 HP | 120V | 5.4 | 31 lbs. |
| 3400D | 3/4 HP | 120V | 6.6 | 37 lbs. |
| 3400HD | 3/4 HP | 208-240V | 3.1 | 37 lbs. |
| 4400D | 1 HP | 120V | 9.1 | 42 lbs. |
| 4400HD | 1 HP | 208-240V | 4.5 | 42 lbs. |
Ice Eater De-Icers By Airmax
Ice Eater de-icers from Airmax provide another proven option for moving warmer subsurface water toward the surface. Ice Eater models are available in several horsepower sizes and are commonly used around docks, boats, marinas and other waterfront structures. Their adjustable mounting options allow water flow to be directed toward the area that needs protection.
Scott Aerator De-Icers
Scott Aerator also offers equipment for winter water circulation and de-icing. These systems provide another option for property owners who need targeted water movement around docks and waterfront structures.
How Much Water Can a De-Icer Keep Open?
There is no single coverage number that applies to every installation. Air temperature, water depth, mounting angle, obstructions and local conditions all affect the size and shape of the open-water area.
The following Kasco sizing information is useful for understanding just how much conditions can affect de-icer performance. These are planning estimates for an angled installation rather than guaranteed ice-free dimensions.
| Average Low Temperature | 1/2 HP | 3/4 HP | 1 HP |
|---|---|---|---|
| 20°F to 34°F | 30' × 100' | 35' × 120' | 40' × 150' |
| 0°F to 19°F | 25' × 60' | 30' × 80' | 35' × 90' |
| -20°F to -1°F | 25' × 55' | 30' × 75' | 35' × 85' |
| Below -20°F | 20' × 40' | 25' × 50' | 30' × 60' |
Remember: Manufacturer coverage charts are sizing guidelines, not guarantees. Kasco's published estimates assume unobstructed water more than four feet deep. Weather, water depth, wind, currents, structures and installation angle can substantially change actual performance.
Three Ways to Install a De-Icer
1. Suspension Ropes
Suspending a de-icer with ropes is one of the simplest and most economical installation methods. It works particularly well beneath boats and docks where secure attachment points are available.
Suspension also makes it relatively easy to experiment with the depth and angle of the unit until the desired water movement is achieved.
2. Dock Mount
A dock mount provides greater control over both the depth and direction of the de-icer. This is often an excellent choice for protecting docks because the unit can be aimed along pilings, slips, seawalls or other areas where ice pressure is a concern.
Being able to adjust the angle can also help create a longer open-water area rather than simply circulating water directly upward.
3. Float Mount
A float mount can be useful when there isn't a convenient dock or structure from which to suspend the de-icer. It allows the unit to be positioned away from shore or in a specific portion of a pond, lake or marina.
Where Should a De-Icer Be Positioned?
Placement is just as important as horsepower. The goal isn't necessarily to create the largest possible hole in the ice. The goal is to move water where protection is needed.
For a dock, that may mean directing flow along the length of the structure and around pilings. For a boat, it may mean positioning the de-icer beneath or alongside the boat and directing water outward. Larger marina installations may work best with multiple de-icers positioned so their areas of water movement complement one another.
Always follow the manufacturer's minimum-depth and installation requirements for the specific de-icer you purchase.
Should You Use a Thermostat or Timer?
A temperature-sensitive controller can be a very useful addition to a de-icing system. Rather than operating continuously throughout the entire winter, a controller can operate the de-icer when temperatures reach conditions favorable for ice formation.
This can reduce unnecessary run time during warmer periods, reduce electricity use and extend the amount of time the equipment spends idle when de-icing isn't needed. Timers are another option where more direct control over the operating schedule is desired.
For many installations, a thermostatic controller is one of the most useful accessories you can add to the system.
De-Icer or Diffused Pond Aerator?
Both de-icers and diffused aeration systems can maintain open water during winter, but they serve somewhat different purposes.
A de-icer is particularly useful when the primary objective is protecting a specific structure such as a dock, boat, pier or marina. Its directional water movement can be aimed toward the area that needs protection.
A diffused pond aeration system is generally the better choice when the primary objective is pond-wide oxygenation and winter water quality. Diffused aeration can also maintain an opening in the ice, but it doesn't provide the same directional water movement around a dock or boat.
For some properties, using both makes sense: aeration for the overall pond and a de-icer for targeted protection around the dock or other waterfront structures.
De-Icer Maintenance
De-icers are relatively simple pieces of equipment, but routine inspection and maintenance can improve reliability and service life.
- Inspect the unit periodically during operation for reduced water flow, vibration or unusual performance.
- Disconnect power before removing weeds, fishing line, plastic or other material from the propeller or shaft.
- Remove and clean the unit periodically so mineral and biological buildup doesn't accumulate on the motor housing.
- Inspect sacrificial anodes where equipped and replace them when significantly deteriorated.
- Follow the manufacturer's recommendations for seal, oil and other scheduled service.
- Inspect the power cord before each season and never operate a unit with a damaged cord.
De-Icing Safety
A de-icer intentionally creates areas of open water and thin ice. Clearly mark or restrict access to de-iced areas where people, pets, snowmobiles or other traffic could encounter unsafe ice. Never assume ice surrounding a de-icing installation is safe to walk or travel on.
Need Help Choosing a Pond or Lake De-Icer?
If you're protecting a boat, dock, pier or marina and aren't sure which horsepower, mounting method or number of de-icers you need, we're happy to help.
When contacting us, it helps to know the approximate dimensions of the area you're trying to protect, water depth, your location, available electrical service and how you plan to mount the de-icer.
Call American Aeration at 800-852-3206 and we'll help you choose the right de-icer and installation method for your application.
