Double Skid Shallow Water Aeration System- SW20
$1,699.99
System: Airmax SW20 (A600803)
Pond coverage: Up to 1/4 acre, 6' maximum depth
Includes: 2 ProAir 2 diffusers and 200' of 3/8" weighted airline
Compressor: LR25, 115V, 2.5 CFM
Warranty: Cabinet 10 years; airline and diffusers 5 years; compressor and electrical components 3 years
Made in USA | ETL Listed
View Airmax Owner's Manual & Limited Warranty
Pond coverage: Up to 1/4 acre, 6' maximum depth
Includes: 2 ProAir 2 diffusers and 200' of 3/8" weighted airline
Compressor: LR25, 115V, 2.5 CFM
Warranty: Cabinet 10 years; airline and diffusers 5 years; compressor and electrical components 3 years
Made in USA | ETL Listed
View Airmax Owner's Manual & Limited Warranty
Airmax Shallow Water Series | SW20 | A600803
Reliable Bottom-Diffused Aeration for Shallow Ponds
The Airmax SW20 Shallow Water Aeration System helps circulate and oxygenate ponds up to 1/4 acre and 6 feet deep. This package includes two ProAir 2 weighted diffusers, an outdoor composite cabinet with SilentAir LR25 compressor, and 200 feet of 3/8-inch EasySet weighted airline in two 100-foot rolls. It is a coordinated system designed specifically for shallow-water applications.
Up to 1/4 Acre Maximum pond coverage
6 Feet Maximum diffuser depth
2 Diffusers ProAir 2 weighted assemblies
200 Feet 3/8" weighted airline total
2.5 CFM Maximum system airflow
Why Choose the SW20?
Designed for Shallow Water
In shallow ponds, rising air bubbles have less depth in which to circulate water. The SW20 uses two strategically positioned diffusers to distribute aeration through smaller, shallow-water environments.
Quiet, Efficient Operation
The LR25 linear diaphragm compressor uses rubber mounts to reduce vibration. Its ventilated outdoor cabinet protects the equipment while keeping the system conveniently accessible for maintenance.
Is the SW20 Right for Your Pond?
Choose the SW20 for a shallow pond with a maximum surface area of 1/4 acre and diffuser locations no deeper than 6 feet. Pond shape, obstructions, and diffuser placement affect actual circulation.
Important: Airmax warns that operating a Shallow Water Series system deeper than 6 feet can cause premature equipment failure and void the warranty.
For larger shallow ponds, consider our Airmax SW40 Shallow Water Aeration System .
What's Included in This SW20 Package?
1. SilentAir LR25 Compressor & Manifold
- One high-efficiency LR25 linear diaphragm compressor
- Two-port airflow manifold with individual valves
- Rubber mounting system for reduced vibration
- Compressor air filter
- Airline quick-disconnect connections
2. Airmax Composite Cabinet
- Outdoor-rated composite enclosure with faux-stone appearance
- Removable top for component access
- Integrated cooling fan and intake filtration
- Elevated base and pre-wired electrical components
- ETL-listed system design
3. Two ProAir 2 Weighted Diffusers
- Two complete weighted diffuser assemblies
- Two PTFE-coated 6-inch membrane sticks per diffuser
- Integrated check valves
- Weighted sled bases that maintain an upright position
- Low-maintenance diffuser design
4. 200 Feet of 3/8" EasySet Weighted Airline
- Two individual 100-foot rolls
- Self-weighted tubing designed to rest underwater
- Flexible, kink-resistant construction
- One separate airline run for each diffuser
Need additional length? View our 3/8" Self-Weighted Aeration Tubing . Compatible connectors for added sections are sold separately.
Before You Order: Airline Length
This A600803 package contains 200 feet total, supplied as two 100-foot rolls—not one continuous 200-foot run. Plan the route from the compressor manifold to each diffuser before ordering. If either route requires more than 100 feet, additional airline and appropriate connector fittings will be necessary.
Electrical service, site preparation, installation tools, and any additional airline or optional mounting accessories are not part of the listed package.
SW20 Technical Specifications
Blue Thumb SKU: A600803
Airmax item: 600803
Model: SW20
Maximum pond size: 1/4 acre
Maximum depth: 6 ft.
Maximum airflow: 2.5 CFM
Compressor: SilentAir LR25 diaphragm
Voltage: 115V
Running amperage: 0.43A
Rated power: 50W
Power cord: 6 ft.
Diffusers: 2 ProAir 2 weighted diffusers
Diffuser dimensions: 14.75" L × 8" W × 3.75" H each
Included airline: 2 × 100 ft. of 3/8" weighted airline
Cabinet dimensions: 23" L × 17" W × 15" H
Sound level: 45.8 dB at 5 ft. (manufacturer reference)
Electrical certification: ETL Listed
Country of origin: Made in USA
Manufacturer operating-cost reference: approximately $3.60 per month at $0.10/kWh when operated continuously. Actual electricity costs depend on local utility rates and usage.
SW20 vs. SW40: Compare Shallow Water Models
Both models are designed for water no deeper than 6 feet. The SW40 uses a larger compressor and four diffusers to serve a larger shallow-water area.
| Specification | SW20 — This Model | SW40 |
|---|---|---|
| Maximum pond coverage | 1/4 acre | 1/2 acre |
| Maximum depth | 6 ft. | 6 ft. |
| ProAir 2 diffusers | 2 | 4 |
| Compressor | LR25 | LR50 |
| Maximum airflow | 2.5 CFM | 4.9 CFM |
| Running amperage | 0.43A | 0.87A |
| Voltage | 115V | 115V |
| Cabinet size | 23" × 17" × 15" | 23" × 17" × 15" |
| Blue Thumb package airline | 200 ft. | 400 ft. |
| Power cord | 6 ft. | 6 ft. |
SW20 — This Model
Coverage: 1/4 acre
Maximum depth: 6 ft.
Diffusers: 2 ProAir 2
Compressor: LR25
Airflow: 2.5 CFM
Running amps: 0.43A
Voltage: 115V
Cabinet: 23" × 17" × 15"
Package airline: 200 ft.
Power cord: 6 ft.
SW40 — Larger Model
Coverage: 1/2 acre
Maximum depth: 6 ft.
Diffusers: 4 ProAir 2
Compressor: LR50
Airflow: 4.9 CFM
Running amps: 0.87A
Voltage: 115V
Cabinet: 23" × 17" × 15"
Package airline: 400 ft.
Power cord: 6 ft.
Installation & Startup
The SW20 requires a suitable cabinet location, a properly grounded GFCI-protected electrical supply, airline routing, and correct diffuser placement. Follow the Airmax owner's manual for the full installation procedure.
Choose the Cabinet Location
Position the cabinet on a stable, level surface above the pond's high-water mark. Keep it away from irrigation spray and maintain open ventilation around its air intake and exhaust.
Plan and Route the Airlines
Determine the distance to each diffuser. Run separate airlines from the cabinet manifold to the two diffuser locations. Additional airline lengths require the proper connector kits. Follow the manufacturer's trenching and protection instructions.
Position Both Diffusers
Install the ProAir 2 assemblies in suitable locations, generally spaced to promote circulation throughout the pond. Lower them carefully so the weighted sleds remain upright. Always follow appropriate water-safety procedures.
Connect and Balance the System
Connect both airlines securely, power the system using a GFCI-protected outlet, and adjust the manifold valves for appropriate airflow to each diffuser.
Use the Required Gradual Startup
When starting a new system, or restarting after an extended shutdown, follow the Airmax seven-day startup schedule. Immediately running continuous aeration in a pond with poor bottom-water quality can create hazardous conditions for fish.
Important Electrical & Fish-Safety Information
Use a properly grounded, GFCI-protected outlet. Never operate the system with an extension cord. Follow the complete manufacturer's safety and startup instructions before powering the system.
Manufacturer's initial startup schedule: Day 1: 30 minutes; Day 2: 1 hour; Day 3: 2 hours; Day 4: 4 hours; Day 5: 8 hours; Day 6: 16 hours; Day 7: continuous operation.
Care, Maintenance & Seasonal Use
Routine Maintenance
- Every 3–6 months: clean or replace the air filter and inspect cabinet ventilation.
- Every 6–12 months: inspect and service the LR25 compressor using the appropriate maintenance kit.
- Every 24–36 months: inspect or clean diffuser membranes, or service sooner if bubble output declines.
- Always disconnect electrical power before servicing.
Winter Operation
The system may be operated seasonally or year-round when conditions permit. Aeration can create dangerous open-water areas and thin ice during freezing weather. Follow Airmax winter safety guidance and post appropriate warnings.
If shutting down, follow the manufacturer's winterization instructions for disconnecting, capping, and storing components.
Manufacturer Warranty Coverage
Airmax provides separate limited warranty periods for major system components:
- Composite cabinet: 10 years
- Airline and ProAir diffusers: 5 years
- Compressor and electrical components: 3 years
Coverage is subject to Airmax warranty terms, exclusions, proper installation, and authorized operating conditions. Wear parts are excluded under the manufacturer's published warranty terms. Review the official owner's manual for complete conditions.
Product Resources & Installation Guides
Airmax Installation & Maintenance Videos
These manufacturer videos cover general Airmax aeration installation and maintenance of the LR25 compressor used in the SW20. Follow the SW20 owner's manual for exact-model instructions.
Airmax Aeration System Installation
Official Airmax installation overview for the aeration system family. Some configurations shown may differ from this SW20 kit.
Video source: Airmax
SilentAir LR25 Compressor Maintenance
Official Airmax demonstration of the LR25 diaphragm maintenance kit installation. Replacement maintenance parts are not included with this aeration system purchase.
Video source: Airmax
Need Help Sizing Your Pond Aeration System?
Not sure whether the SW20 provides the right coverage, or whether the included airline is long enough? Our Sales/Tech Team can help review your pond size, depth, diffuser placement, and installation plan.
Frequently Asked Questions
Does this SW20 package include 100 or 200 feet of airline?
The A600803 package includes 200 feet total: two separate 100-foot rolls of 3/8-inch EasySet weighted airline. Each diffuser receives its own airline run.
Can I use the SW20 in water deeper than 6 feet?
No. Airmax limits this Shallow Water Series system to a maximum diffuser depth of 6 feet. Operating it deeper than this can cause premature equipment failure and void the manufacturer warranty.
Do I need electricity right beside my pond?
Not necessarily. The compressor cabinet can be positioned away from the water when suitable airline routing is provided. A correctly installed, grounded, GFCI-protected electrical supply is required at the cabinet. Additional tubing, connectors, or a remote manifold may be needed for longer installations.
Can I run the aeration system continuously?
The system is designed for continuous operation, but a gradual startup is important when first installing it or restarting after an extended shutdown. Follow Airmax's seven-day procedure to reduce the risk of bringing poor-quality bottom water rapidly to the surface.
Will the SW20 eliminate algae or pond muck?
Bottom-diffused aeration supports water circulation and oxygen availability, which can help beneficial biological processes and overall pond management. It is not a guaranteed standalone solution for algae, excessive nutrients, or accumulated muck. Additional pond-management measures may be necessary.
What maintenance should I expect?
Periodically clean the air filters, inspect cabinet ventilation, maintain the LR25 compressor, and inspect diffuser membranes. The Airmax manual provides the recommended service intervals and replacement procedures.
Can the system operate during winter?
Winter operation is possible, but moving water can create dangerously thin ice and open-water areas. Follow the manufacturer's winter safety recommendations. If you shut down the system, follow the specified winterization procedure before storage.
Related Products
-
-
-
Triple or Quad Skid Pond Aeration System - PS40
$3,399.99 - $4,019.99 -
