The Air Supply Gast 2.5 HP Commercial Air Blower (Model R5125-2) is engineered for relentless, around-the-clock aeration in the most demanding environments. Designed to deliver steady, oil-free airflow, it minimizes downtime and maintenance while supporting critical setups—from pools and spas to aquaculture and industrial processing. This single‑phase workhorse keeps spaces comfortable and equipment running smoothly, day after day.

Why the R5125-2 stands apart

• Oil-free, continuous airflow powered by perma‑lube sealed ball bearings for years of non‑pulsating performance with minimal maintenance.
• Quiet operation built‑in silencers keep noise levels within OSHA guidelines, making it ideal for shared spaces, open‑concept facilities, and guest areas in hotels, condos, or spas.
• Durable, moisture-ready housing a totally enclosed, fan‑cooled aluminum design built to withstand humid environments and busy service schedules.
• Safety and reliability UL recognized and CSA approved motors provide dependable operation across installations.
• Global electrical compatibility supports 50/60 Hz and operates on 120/230V single‑phase, adapting to domestic and international setups.
• Compact footprint aluminum enclosure fits neatly in equipment rooms, basements, or utility closets without sacrificing performance.
• Tailored performance options available in a range of sizes and voltages to precisely match your airflow and pressure needs (consult for details).
• U.S. craftsmanship from the Gast line, backed by Air Supply of the Future’s sizing expertise, technical support, and a broad range of aeration solutions.

Practical applications and outcomes

• Ideal for commercial and residential pools, spas, and bathtubs requiring steady, noiseless aeration that enhances comfort and water quality.
• Essential in aquaculture systems where continuous, oil‑free airflow supports healthy tanks and consistent oxygenation.
• Suitable for industrial processing or chemical applications needing a durable, compliant air supply in challenging environments.
• Perfect for facilities like health clubs, condominiums, hotels, and motels where reliable operation with minimal disruption matters.

Technical snapshot

• Horsepower: 2.5 HP
• Model: R5125‑2
• Airflow: oil‑free, continuous
• Phase/Voltage: single‑phase 120/230V
• Frequency: 50/60 Hz
• Enclosure: aluminum, totally enclosed, fan‑cooled
• Protection: moisture‑resistant design
• Certifications: UL recognized, CSA approved

Delivery, support, and expert guidance

Important: this is not a stocked item and may take up to three months for delivery. No returns on commercial air blowers. For faster options, many Air Supply of the Future models are in stock for immediate delivery. If you need help with fit, sizing, or alternative configurations, our Product Specialists are available by phone, chat, or email during normal business hours. Air Supply of the Future offers a broad range of aeration products, design expertise, and industry‑leading technical support to ensure the right blower choice for your application.

With the R5125‑2, you invest in a durable, quiet, and maintenance‑light solution that supports consistent aeration where it matters most—pool areas, spa environments, multi‑unit residential spaces, aquaculture setups, and industrial processes. Built in the U.S. and backed by deep sizing expertise, it’s a dependable choice for facilities that value reliability, compliance, and long‑term performance.