The Castair UNE-5-15 Noise Reduction Enclosure is designed for rotary screw and reciprocating air compressors in the 5 to 15 horsepower range. Compressors in this HP bracket are common in smaller shops, body shops, detail operations, and service bays where the compressor lives in the same space as the work being done. The constant motor and pump noise adds up over an 8-hour day — this enclosure addresses that at the source without requiring you to build a dedicated compressor room.
Who This Enclosure Is For
The UNE-5-15 fits shops and facilities running smaller compressor units:
- Smaller auto service shops with a 5-15 HP unit in the main bay or adjacent room
- Detail shops and small body shops where customer interaction happens near the compressor
- Tire shops running smaller rotary or reciprocating units
- Facilities sharing wall space with other tenants where noise transfer is a concern
- Home garages or workshop settings where a professional-grade compressor runs near living spaces
If you're running a 20 or 25 HP unit, the UNE-20-25 is the right enclosure for that HP range. Using an enclosure sized for a smaller compressor on a larger unit creates airflow restriction problems that can cause overheating.
How the Enclosure Works
Castair noise reduction enclosures use sound-absorbing panel construction to block and dampen compressor noise from the pump, motor, and cooling fan. The enclosure includes ventilation provisions that allow adequate airflow for cooling — a critical design requirement for any compressor enclosure. Simply boxing in a compressor with solid panels causes heat buildup and premature pump failure. The UNE-5-15 is engineered to balance noise reduction with the airflow requirements of compressors in this HP range.
Key Features
- Sized for 5-15 HP Compressors: Proportioned and configured specifically for this HP bracket
- Sound Dampening Panels: Multi-layer construction absorbs and blocks airborne compressor noise
- Ventilation Design: Engineered openings maintain cooling airflow during continuous operation
- Maintenance Access: Panel design allows access to filters, oil fill, and other service points without full enclosure removal
- OEM Castair Product: Designed by the compressor manufacturer to work with their units in this HP range
- Permanent Installation: Built for long-term shop use, not a temporary solution
Noise Reduction — Practical Expectations
A proper noise reduction enclosure brings compressor noise down to a level where normal shop conversation and phone use are practical near the unit. It won't make a 10 HP compressor silent, but it makes a real difference in daily shop environment. For hearing protection compliance, combine this enclosure with compressor room isolation and appropriate PPE for personnel working in direct proximity.
The actual noise reduction achieved depends on installation conditions — how well the enclosure seals, what's behind and around it, and the specific compressor model running inside. An enclosure on a hard concrete floor with walls on two sides will perform better than a freestanding installation in the middle of an open bay.
What's in the Box
- 1x Castair UNE-5-15 Noise Reduction Enclosure (complete enclosure assembly)
Note: Manufacturer product page data was not available at time of writing. Exact panel count, assembly hardware, and included components are not confirmed. Contact us for current specifications before ordering.
Available Configurations
- UNE-5-15 ($2,956.80) — For compressors in the 5 to 15 HP range (this unit)
- UNE-20-25 ($3,388.00) — For compressors in the 20 to 25 HP range
Match the enclosure to your compressor's nameplate horsepower rating. The motor HP is stamped on the motor itself. If you're unsure, call us — it's a 30-second question.
When Does a Shop Need This vs. Stepping Up or Down
The UNE-5-15 is the right choice when you're running a 5-15 HP compressor in a location where noise is a daily problem and building a full compressor room isn't practical or in the budget. At $2,956.80, it's a significant investment for a smaller shop — but compare that to the cost of lost productivity, customer complaints, or noise-related hearing issues over years of operation.
If your compressor is already in a dedicated mechanical room with solid walls and a closing door, an enclosure may be redundant. But if it's in the open shop floor, near the service desk, or adjacent to a customer waiting area, this is a practical solution.
Technical Specifications
- Part Number: UNE-5-15
- Manufacturer: Cast Air / Castair
- Application: 5-15 HP air compressors
- Category: Noise Reduction Enclosures
- Price: $2,956.80
Dimensions, weight, noise reduction rating (dB), and panel specifications were not available from manufacturer data at time of writing. Contact us for full specification sheet.
Why Buy From Air Compressor Factory Direct?
- Castair Specialist: We carry the full Castair enclosure lineup and can confirm the right fit for your compressor model and HP rating
- Free Shipping: On qualifying orders — contact us about freight options for large enclosure assemblies
- Free Tech Support: Call 866-217-0063 for sizing guidance before you order
- Full Manufacturer Warranty: Covered under Castair's standard product warranty
- Honest Guidance: If your setup needs a different enclosure size or approach, we'll say so
Call 866-217-0063 for quick answers and help!
