Products
Gas Spray Booth Heaters & Air Makeup Units
American-made direct fired heaters built for finishing, not HVAC. We manufacture ETL listed units from 4,000 to 55,000 cfm and custom systems up to 110,000 cfm in our California factory. They keep booth air balanced, shorten cure times and hold finishes consistent all year.
Our direct fired gas heaters run from 400,000 Btu to 5.5 MBtu and supply clean, heated makeup air to spray booths and paint booths of every size. Every unit is engineered, fabricated and finished in our own factory, and we build every heating system configuration:
- horizontal
- vertical
- indoor or outdoor installation
- recirculating (in process air modes)
- Prep Mode
- Flash Mode
- multi booth controls
- custom industrial systems
Cabin sizes
We have 5 cabin sizes, each covering a range of airflow and burner output:
R1
4,000 – 13,000 cfm
0.4 – 1.5 MBtu
R1+
14,000 – 16,000 cfm
1.5 MBtu
R2
12,000 – 30,000 cfm
2.0 – 3.0 MBtu
R3
28,000 – 40,000 cfm
3.0 – 3.5 MBtu
R5
40,000 – 55,000 cfm
4.0 – 5.5 MBtu
/ Gas heater specifications
- Heating capacity
- 400,000 Btu to 5.5 MBtu, natural gas or LP
- Airflow (ETL listed)
- 4,000 to 55,000 cfm
- Airflow (non-listed)
- Custom builds up to 110,000 cfm
- Configuration
- Vertical or horizontal cabinet, indoor or outdoor, with multiple discharge orientations
- Controls
- VFD motor control, automatic pressure balancing, Prep Mode, Flash Mode and fault indicator lights
- Control panel
- UL 508A listed, certified by ETL
- Safety interlocks
- Connection points for every required interlock, ready to tie into booth safety systems
- Construction
- Heavy-gauge steel housing, insulated cabinet, high-efficiency burner and precision-balanced fans
- Low NOx
- Riello or Midco low NOx burners, or a low-capacity heater as an alternative
Codes & standards
Built for inspection day
- NFPA 33 / IFC Chapter 24 cover spray application of flammable and combustible finishes.
- NFPA 86 / IFC Chapter 30 cover curing and drying operations.
- Full-system ETL listings are available, showing compliance with UL, NFPA and OSHA requirements. That makes permits and inspections easier than with a booth built from separately listed parts.
Requirements vary by location. Confirm details with your local authority having jurisdiction (AHJ).
FAQ
Gas spray booth heaters
Why use a gas heater in a spray booth?
A gas spray booth heater recovers temperature fast and costs little to run. It shortens flash times, speeds up curing and keeps finishing conditions steady in every season, so you have fewer coating defects and less rework.
What is a direct fired air makeup unit?
A direct fired air makeup unit heats the fresh air that replaces air exhausted from the booth. The burner sits in the airstream, which transfers nearly all of the fuel's heat into the supply air.
How is the right heater size chosen?
Sizing starts with the booth's required airflow (cfm), then the temperature rise needed for your climate, which sets the Btu rating. Our R1 through R5 cabinets cover 4,000 to 55,000 cfm, and we size the unit to your booth before you order.
How does a variable air flow heater save energy?
Prep, spray, flash and cure each need a different airflow. With VFD control, pressure balancing and recirculation during process air modes, the heater conditions only the air each stage needs, not a fixed maximum volume.
Can a gas heater be retrofitted to an existing booth?
Yes. We engineer gas heating systems for new booths and for upgrades to existing spray booths, including multi-booth setups that share one heater.
Made in the USA · Factory direct
Get your gas heater sized
Send us your booth size, airflow and location. Our engineers run the heat load and come back with a heating specification and a factory-direct quote, including where you can spend less.