LT Plus Series Air Compressors

Look for the UL 1450, Supplement SC listing label (red sticker) on the unit to confirm compliance. To meet NFPA 13 (2025) requirements, a fire protection air compressor shall be listed for fire protection use. You can read more about UL 1450, Supplement SC in our article

UL 1450 is a general safety standard covering motor-operated air compressors, vacuum pumps, and painting equipment. UL 1450, Supplement SC is a stricter certification specifically for fire protection air compressors, ensuring they meet the higher performance and reliability requirements of fire sprinkler systems. You can read more about UL 1450, Supplement SC requirements here

Fire protection air compressors must restore system pressure within 30 minutes per NFPA 13. Compressor sizing is based on system volume (gallons), and for multiple risers, the largest system should be used for sizing.

Oil-less compressors require less maintenance and are ideal for most applications. Lubricated compressors require regular oil changes but may offer durability in certain conditions.

Riser-mounted compressors save space, while tank-mounted compressors are required for systems serving multiple risers per NFPA 13 (2025) 8.2.7.5.1.

Advance Series compressors feature a digital pressure switch with advanced monitoring capabilities, while Plus Series compressors use a traditional mechanical pressure switch.

General Air Products Digital pressure switches provide real-time system data including pressure, run hours, and cycles, and allow for easy adjustments during installation and maintenance. In addition they have fewer moving parts, often providing better long term reliability.

The ideal air supply depends on your application: compressed air for general use, dry air for cold storage to prevent freezing, and nitrogen generators or Vapor Pipe Shield for corrosion mitigation.

Maintenance kits for General Air Products compressors are available through authorized distributors or directly from General Air Products. You can find your local General Air Products distributor through our distributor locator tool or use our maintenance kit lookup tool

Fire protection air compressors should be maintained annually in accordance with NFPA 25 and manufacturer recommendations to ensure system reliability and compliance. Maintenance kits can be purchased through your local distributor or through our maintenance kit lookup tool

If you experience issues with your fire protection air compressor, contact General Air Products technical support at 1-800-345-8207 or through the chat feature in the lower right corner for expert assistance - from a real live person, we promise 🙂

General Air Products compressors are available through our nationwide network of fire protection distributors. Use our distributor locator to find a supplier near you.

All General Air Products fire protection air supplies include a standard 1-year manufacturer warranty. Contact us or refer to product manuals full warranty details.

Replacement parts are available through authorized distributors or directly from General Air Products below each product page. Contact technical support at 1-800-345-8207 or through the chat feature in the lower right corner if you need help identifying parts.

Q Series air compressors operate at approximately 50–55 decibels, making them significantly quieter than traditional compressors and ideal for noise-sensitive environments.