Vertex Air 4 XL2 Aeration System
Aerate Up to 12 Acres with the Vertex Air 4 XL2 Aerator
The Vertex Air 4 XL2 Aerator System is the top of the XL2 line and the largest single-cabinet system Vertex builds for commercial ponds. Inside the Large QuietAir cabinet sit two 1/2 HP Brookwood rotary-vane compressors - 1 HP and four cylinders combined - pushing 8.6 CFM at depth. That airflow gets split across four XL2 AirStations with two 9 in self-cleaning membrane disks each, for a total of eight diffuser disks moving up to 19,300 gallons per minute. Roughly twice the capacity of the Air 3 XL2 and comfortably enough to aerate ponds up to 12 acres at depths greater than 8 ft.
Pick 115V or 230V at 60 Hz. The dual-compressor design provides redundancy as well as capacity - if one compressor needs service, the other keeps flowing while the first is being worked on. Each unit uses upgraded rotors, stators, valve plates, bearings, and capacitors tuned for continuous 24/7 operation. Vertex SafeStart auto-restart brings both compressors back online under maximum rated pressure without motor damage after a power loss, and thermal overload protection trips before either compressor can overheat.
Add the optional Large Cabinet Sound Reduction Kit at order time for ultra-quiet operation - a muffler box, sound insulation, and quiet filter package sized to the Large QuietAir cabinet. Pick the 3/8 in self-weighted BottomLine tubing length that reaches from your cabinet to each AirStation drop point - up to four tubing runs. Free shipping on every Air 4 XL2.
The Vertex Air 4 XL2 is a four-station bottom-diffused aeration system for ponds up to 12 acres. Two 1/2 HP 2-cyl Brookwood compressors (1 HP combined, 4 cyl), 8.6 CFM, four XL2 AirStations, up to 19,300 GPM total pumping capacity.
Large QuietAir powder-coated aluminum cabinet with 140 CFM cooling fan. Class A GFCI protection. Vertex SafeStart auto-restart. Thermal overload protection. Oil-free, no lubrication. Dual-compressor redundancy.
115V or 230V. Optional Large Cabinet Sound Reduction Kit. Optional 50, 100, 250, or 500 ft BottomLine tubing for the run to each AirStation.
Free shipping on every Vertex Air 4 XL2. Optional Sound Reduction Kit and weighted tubing available above. Call (470) 354-1969.

Watch the Vertex Aeration System in Action
Why Choose the Air 4 XL2 by Vertex
Air 4 XL2 Specifications
| Air 4 XL2 | |
|---|---|
| Horsepower | 1 HP total (two 1/2 HP compressors) |
| Compressor | 2 x Brookwood rotary vane, oil-free, 2 cylinder each (4 cyl total) |
| AirStations | 4 x XL2 (two 9 in self-cleaning membrane disks each; 8 disks total) |
| Max Air Output (CFM) | 8.6 CFM |
| Maximum Operating Depth | 30 ft |
| Maximum Aerated Acres | Up to 12 acres at depths above 8 ft |
| Pumping Capacity | Up to 19,300 GPM |
| BottomLine Tubing (Optional) | 50, 100, 250, or 500 ft - 3/8 in self-weighted |
| Voltage Options | 115V or 230V |
| Cabinet | QuietAir Large powder-coated aluminum with 140 CFM cooling fan |
| Sound Reduction Kit (Optional) | Muffler box, sound insulation, and quiet filter for the Large cabinet |
| GFCI Safety Circuit | Class A, on compressor and fan circuits |
| Auto Restart Under Pressure | Yes - Vertex SafeStart |
| Thermal Overload Protection | Yes |
| Lubrication | Oil-free, no lubrication required |
| Compressor Warranty | 3 yr (excluding wearable parts) |
| Cabinet Warranty | Limited lifetime against rust |
| AirStation Warranty | 5 yr |
| BottomLine Tubing Warranty | 15 yr |
Requirements & What to Know Before You Buy
- Pond Surface: up to 12 acres on the Air 4 XL2 at depths greater than 8 ft. For larger water bodies, look at the Vertex XL5, HighFlow, or BriteStar systems.
- Pond Depth: 30 ft maximum operating depth. Standard XL2 AirStations are rated for 8 ft or deeper - for shallower water Vertex offers optional Shallow Water XL2 SW stations on request.
- Power: pick 115V or 230V (60 Hz). The cabinet draws more power than the smaller Air systems - confirm circuit sizing with a licensed electrician.
- Cabinet Placement: the QuietAir Large cabinet is heavier and larger than the Small or Medium cabinets - allow extra clearance and a sturdy mounting location. Use the included heavy-duty mounting pad. Shade helps keep compressor temperatures down.
- Tubing Runs: 3/8 in BottomLine self-weighted tubing connects the cabinet to each of the four AirStations. Measure each run separately and choose 50, 100, 250, or 500 ft above - you may need up to four tubing kits. The cabinet has a multi-valve control manifold to independently meter each station.
- AirStation Placement: drop the four XL2 stations to maximize coverage - typically in the deepest spots or spread across irregular shorelines. Self-sinking stainless bases prevent sinking into soft sediment.
- Sound Reduction: the Large Cabinet sound kit adds a muffler box, insulation, and quiet filter. Order at the same time as the system to get a single-shipment install.
- Winter Operation: the Air 4 XL2 can run year round. In freezing climates we recommend pulling the AirStations into shallower water during winter to maintain a small open-water area without freezing the cabinet.
- Sizing Help: Call (470) 354-1969 with your pond surface area and depth and we will recommend the right Vertex system.
What's Included & Optional Add-Ons
- Two 1/2 HP Brookwood Compressors - rotary-vane, oil-free, continuous duty, 4 cylinders combined
- Four XL2 AirStations - two 9 in self-cleaning membrane disks each on stainless steel self-sinking bases (8 disks total)
- QuietAir Large Cabinet - powder-coated aluminum with 140 CFM cooling fan
- Multi-Valve Aluminum Control Manifold - pre-assembled in the cabinet to independently meter all four AirStations
- Class A GFCI Safety Circuit - on compressor and fan circuits, quick disconnect switch
- Heavy-Duty Mounting Pad - lightweight pad sized to the Large cabinet
- Optional Large Cabinet Sound Reduction Kit - muffler box, sound insulation, and quiet filter (CBN108SA)
- Optional 3/8 in BottomLine Tubing - 50, 100, 250, or 500 ft self-weighted; up to four kits depending on AirStation placement
- Optional Shallow Water AirStations (XL2 SW) - for depths shallower than 8 ft, on request
- Warranty - 3 yr compressors, 5 yr AirStations, 15 yr BottomLine tubing, limited lifetime cabinet against rust
- Returns - Unused Vertex aeration systems are eligible for returns within 30 days, minus a 25% restocking fee.
Vertex Air 4 XL2 Diffused Aerator Specifications
| Manufacturer | Vertex Aquatic Solutions |
| Model | Air 4 XL2 Aeration System |
| Type | Four-station bottom-diffused aeration system with shore-mounted dual-compressor cabinet |
| Horsepower | 1 HP total - two 1/2 HP Brookwood rotary-vane compressors |
| Cylinders | 4 cylinders total (two 2-cyl compressors) |
| Voltage Options | 115V or 230V, 60 Hz |
| Air Output | 8.6 CFM |
| Pumping Capacity | Up to 19,300 GPM |
| Maximum Operating Depth | 30 ft |
| Maximum Aerated Acres | Up to 12 acres at depths over 8 ft |
| AirStations Included | 4 x XL2 (two 9 in self-cleaning membrane disks each, 8 disks total) |
| AirStation Base | Powder-coated stainless steel self-sinking base |
| Cabinet Construction | QuietAir Large powder-coated aluminum with stamped ventilation grill |
| Cooling Fan | 140 CFM |
| Safety Features | Class A GFCI on compressor and fan circuits, quick disconnect switch, SafeStart auto restart, thermal overload protection |
| Tubing (Optional) | 3/8 in BottomLine self-weighted; 50, 100, 250, or 500 ft per AirStation |
| Sound Reduction Kit (Optional) | Large Cabinet sound kit (CBN108SA): muffler box, sound insulation, quiet filter |
| Total Configurations | 20 across voltage, sound kit, and tubing length |
| Applications | Large commercial ponds, municipal water features, HOA lakes, golf course irrigation ponds, agricultural water bodies up to 12 acres at depths over 8 ft |
| Warranty (Compressors) | 3 years (excluding wearable parts) |
| Warranty (AirStations) | 5 years |
| Warranty (BottomLine Tubing) | 15 years |
| Warranty (Cabinet) | Limited lifetime against rust |
| Country of Origin | Vertex Aquatic Solutions, USA |