Verification by ID.me •
What is ID.me?
A bottom-diffused aeration system built for shallow ponds up to 1/2 acre and 6 ft deep — four diffuser plates spread coverage evenly, reducing algae and keeping water healthy for fish and plants.
Shallow ponds and irregularly shaped water bodies present a unique aeration challenge — less depth means each diffuser covers less area, so many systems end up oversized and overpriced. The SW40 solves this with four dedicated diffuser plates that spread coverage evenly across your pond, reaching bends and shallow zones a single large diffuser can't. The result is reduced algae growth, fewer foul odors, and healthier, better-oxygenated water for your fish.
Purpose-built for small and shallow ponds up to 6 ft deep.
An energy-efficient diaphragm compressor that runs for as little as $7.20/month in electricity.
Faux-rock composite cabinet blends into the landscape while protecting internal components — 10-year warranty.
Spreads coverage across multiple zones — ideal for irregularly shaped or depth-restricted ponds.
Runs 24/7 for as little as $7.20 per month in electricity.
Membrane diffusers with check valves and quick-disconnect airline fittings for simple removal and storage.
| Max Pond Size | Up to 1/2 Acre |
| Max Diffuser Depth | 6 ft |
| Compressor | LR50 SilentAir Diaphragm |
| Running Amps | 0.87 |
| Voltage | 115V |
| Wattage | 100 Watts |
| Max CFM | 4.9 |
| Diffusers | 4 ProAir2 Weighted Diffusers |
| Cabinet | Airmax Composite Cabinet, 23"L x 17"W x 15"H |
| Power Cord | 6 ft |
| Monthly Operating Cost (24/7) | $7.20* |
| ProAir Diffuser Warranty | 5 Years |
| Compressor & Electrical Warranty | 3 Years |
| Composite Cabinet Warranty | 10 Years |
| EasySet Airline Warranty | 5 Years |
*Estimated cost based on average electricity rates; actual cost varies by location.
A powerful yet energy-efficient diaphragm compressor mounted on vibration-reducing rubber feet for quiet operation, with an integrated air regulator for easy airflow management. Backed by a 3-year warranty.
An ETL-certified composite cabinet with a faux-rock finish blends into any landscape while protecting the compressor and electrical components. An elevated base guards against flood water, and a ventilation fan with rain shroud keeps things cool and dry. Backed by a 10-year warranty.
High-efficiency membrane diffusers release fine oxygen bubbles into the water column without the maintenance headaches of traditional air stones. An integrated check valve prevents backpressure on the compressor, and the weighted sled keeps each diffuser upright and submerged during installation. Backed by a 5-year warranty.
If your SW40's compressor has failed, the genuine Airmax LR50 (SW40) replacement compressor is a direct fit.
Shop SW40 Replacement Compressor →Why does a shallow pond need four diffusers instead of one bigger one?
Less water depth means each diffuser covers a smaller area, so spreading four plates across separate zones gives more even coverage than a single large diffuser would in shallow or irregularly shaped ponds.
How far can the cabinet be from the pond?
The compressor cabinet can sit at the water's edge or up to 1/4 mile away, connected by airline, so you're not limited to running power right to the shoreline.
Do I need an electrician to install this?
No special wiring is required at the pond itself — Airmax EasySet airline delivers oxygen to the water while the compressor plugs into a standard outlet at the cabinet location.
What's covered under warranty?
The ProAir diffusers and EasySet airline are covered for 5 years, the compressor and electrical components for 3 years, and the composite cabinet for 10 years.
My compressor stopped working — can I buy just that part?
Yes — the LR50 (SW40) replacement compressor is sold separately and is a direct fit for the SW40.
