Cold weather often stalls productivity, delays jobs, and frustrates even the most experienced spray foam professionals. However, the BOSS 5/12K Proportioner is engineered to power through freezing jobsite conditions. With high heat, consistent output, and a simple, rugged design, this machine gets crews spraying faster—even in extreme climates.
If you’re working in subfreezing temperatures or need year-round reliability, this system won’t let you down. It’s a 240V single-phase, air-driven workhorse made to perform under pressure without relying on complex electronics.
Why Choose the BOSS 5/12K?
- Heats fast with 12kW dual-block heaters, so you can start sooner on cold days
- Delivers up to 32 lb/min at 2,000 psi, making it ideal for high-demand spraying
- Supports up to 400 ft of heated hose for wide-area and remote applications
- Runs on standard 240V single-phase power—no special wiring required
- Features an air-driven pump that easily handles continuous use
- Uses a breaker-and-relay electrical system—no circuit boards to replace
- Includes a simple touchscreen with intuitive on/off controls
- Allows fast repairs with easy access to serviceable components
- Built with stainless steel, zinc, brass, and chrome fluid paths for durability
- Seals made with Viton for enhanced chemical resistance
Rapid, Reliable Heating in Cold Climates
The BOSS 5/12K includes two 6,000-watt heating blocks—one for the ISO side and one for the resin. This dual-heater setup raises fluid temperatures to 195°F quickly. Even in freezing weather, your crew can get spraying without delay. As a result, you’ll stay productive without sacrificing spray quality.
Consistent High Output and Pressure
Thanks to its powerful air motor and stripped-tube pump design, the system delivers up to 32 lb/min at pressures as high as 2,000 psi. You can tackle medium-to-large insulation and coating jobs with confidence. Moreover, this consistent output ensures steady application rates throughout the day.
Extended Hose Reach and Remote Capability
With a built-in hose heat transformer that supports up to 400 feet of heated hose, you can cover more ground. Whether you’re spraying rooftops, attics, or large open structures, you can remain in place and still reach difficult areas. This flexibility reduces setup changes and improves efficiency across big jobs.
Built for Easy Maintenance
Engineered to reduce wrench time:
✅ Durable components like stainless steel, brass, and Viton seals
✅ Fluid and electrical parts are easy to access and replace
✅ Simple on/off controls streamline startup and shutdown
✅ This means less time tinkering and more time spraying quality foam
Technical Overview
- Heating capacity: 12,000 watts (2x 6kW blocks)
- Max output: 32 lb/min (0.05 gal per A+B cycle)
- Max pressure: 2,000 psi
- Air requirement: 11 cfm @ 150 psi (minimum 24 cfm @ 175 psi for full capacity)
- Hose compatibility: up to 400 ft heated hose
- Electrical: 240V, single-phase
- Fluid components: stainless steel, zinc, chrome, brass
- Seals: Viton O-rings
Ready for Cold-Weather Spraying?
If you’re tired of waiting for heat, replacing circuit boards, or losing hours to cold-start delays, the BOSS 5/12K is your next upgrade. This machine provides the heat, pressure, and simplicity you need to stay productive. Built for real-world conditions, it helps you get more done—especially when temperatures drop.
About Spray Foam Systems
Spray Foam Systems is the #1 spray foam rig builder and spray foam equipment supplier in the United States. Family-owned and proudly serving the industry since 2007, we operate from a 7-acre campus with over 80,000 square feet of dedicated working space in Greensboro, GA. With over 10,000 customers served over the last 18 years, we specialize in delivering high-quality turnkey spray foam systems, distributing top-tier equipment and supplies, and providing nationwide service and training to help contractors grow and succeed in the spray foam insulation and roofing markets.