Koenders - Model HD 450 -Electric Pond Aeration System

You can rest knowing that the HD 450 is breathing life into your water by pumping a consistent flow of oxygen throughout the water body. It promotes healthy aerobic activity for fish and pond life. The oxygenation process also provides a source of energy for enzymes and bacteria to consume the excess nutrients, fish droppings and pond muck that starves algae of its food source and keeps algae under control.

Our compressors are plumbed and housed in weather-resistant enclosures that have been proven to protect them from moisture and provide enough air circulation to prevent overheating and freeze up in all climates and temperatures. The housing is designed to reduce motor noise and operates at low decibel levels. Our compressors are designed using the revolutionary WOB L technology; this revolutionary piston design provides consistent, longer lasting dynamic compression by a fixed piston inside cylinder.

• Ideal for ponds over one acre in size up to 30 feet deep.
• Provides consistent bottom-up aeration for your pond
• Built to last
• Easy to install
• Quiet operation

• 110 Volt Motor - 3.4 Amps
• Weatherproof Housing
• Durable Die-Cast Aluminum Components
• Built-in Pressure Relief Valve
• 1 Year Full Warranty

Engineered with Decades of Field Experience Providing Customers with Proven Quality and Reliability
With 1000`s of electric aeration systems in the field and customers who have been using them for decades, Koenders Water Solutions has designed their latest generation of electric aeration systems with real life feedback and reliable statistics. Listed below are a few key advantages of these electric aeration systems which has aided Koenders Water Solutions in becoming a leading brand in the sewage and pond aeration market.

HD Electric Housing Units
Koenders designed its housing units out of a high density Polyethelene material so that the units that house our motors are RUST, ROT and CORROSION FREE. At the same time the material provides water resistant and light weight characteristics.

This housing unit design is now over 20 years old and has been created in a specific way to keep constant airflow circulating through the housing. This keeps the compressors from burning out pre-maturely in hot summer temperatures while providing enough heat during the freezing cold winters to ensure it operates smoothly.

This material was chosen over heavier metal designs such as aluminum powder-coated and steel cabinetry because aluminum tends to dent, rust, and corrode quite easily leading to leakage, overheating and motor burn outs. This is such a big issue with manufacturers that some companies that have chosen to go with this lower cost alternative and offer outlandish warranties that are simply unrealistic and mere marketing ploys. For example, if your compressor has burnt out do you care about a lifetime warranty on the cabinet?

HD Compressor Design
Koenders design team worked with the engineers from one of the world`s leaders in compressor technology, Thomas Compressors (a Division of Denver Gardner) for almost 2 years testing a selection of compressors which would be used in our line of electric aeration product.

These compressors have been modified to work in very hot and cold climates and customized for Koenders` design requirements. We have worked with Thomas Compressors and its engineering partners on these modifications so that these models will work reliably in extreme temperatures from 40 below right up to plus 40. In addition, these compressors are proven and tested to work under constant pressure loads. This is the case with bottom-up aeration, where aeration starts at the bottom of the water body and rises up through the water column as opposed to surface aeration that only aerates the top 1 ft of the water column.

Additional Features
Additional compressor features and advantages that add to the HD design advantage in reliability, performance and reduced noise levels of operation:

• Oil-less operation
• Permanently lubricated bearings for optimum life
• Stainless steel valves for longevity, consistent performance and corrosion resistance
• Die-cast aluminum components for strength, light weight and durability
• Dynamically balanced for low operating vibration and noise
• Incorporated the WOB-L Technology Design for longer lasting compression by a fixed piston inside cylinder
• Thermally protected motor for fail-safe operation
• Inlet filter for quiet and clean operation
• Ventilation Fan for air circulation and cooling
• Designed and tested to UL, CSA standards

Koenders Electric Aeration Systems proven track record - Reliability Statistics
Koenders Electric Aeration Systems were introduced into the market in the early 1990s. The former product was named "Koenders EL2" and used the same housing design as our current HD line of products. (Only difference is that they were red!) There were over 25,000 EL2s sold and installed between the 1990`s and 2014, and customers today still have these units aerating their ponds with little to no maintenance. The warranty rate on these units were less than 1%!

Since 2014, there have been several thousand HD units sold and installed in North America and reliability statistics are just as impressive as our EL2 numbers. We are tracking well below industry standards at far less than a 1 % warranty rate for these systems which is reassuring for all our future customers.

Performance Data: High Performance and Energy Efficiency

• Voltage/frequency: 120 V-60 Hz
• Power at rated pressure: 636 W
• Speed at rated pressure: 1946 rpm
• Max pressure restart:15 PSI up to 30 ft of water
• Efficient Amperage draw: 3.4 amps
• Horsepower: 0.6 HP

Max Airflow: 4.6 CFM (13.1 L/min)

• Produces 4.4 CFM at 10 FT depth 5 PSI
• Produces 4.2 CFM at 20 FTdepth 10 PSI
• Produces 4.0 CFM at 30 FT depth 15 PSI

Designed to a maximum pressure of 30 PSI

General Data:

• NetWeight:45lbs Exterior Dimensions: 17.25" wide x 13.5" deep x 21.5" tall
• Safety Certification: UL, CSA CE *To prolong life locate unit in a sheltered area out of direct sunlight or precipitation

Nature`s Pond HD 250 and HD 450 Comparison

• HD 450 pumps 2 times more air compared to the HD 250 at the depths detailed above
• Functions at depths up to 6 times greater than the LD 1.5
• Can connect double the airstones to the HD 450 compared to the HD 250