Therma-Kleen Therma-Steem Industrial Model 400 Steam Cleaner – 180 PSI, 380°F, Continuous Fill

The Therma-Steem Industrial Model 400 (THE-IN4) from Therma-Kleen is the highest-pressure electric dry vapor steam cleaner in its class — 180 PSI at 380°F with 97% dry vapor output. Continuous fill from a 2-gallon stainless reserve tank feeds the 1.5-gallon boiler for uninterrupted commercial use. Specified for food processing, automotive shops, and heavy-grease industrial sanitation.

Therma-Steem Industrial 400: Continuous-Fill Dry Vapor Steam at 180 PSI and 380°F

The Therma-Kleen THE-IN4 is the highest-pressure electric steam cleaner in the Therma-Steem line, generating 97% dry vapor steam at 180 PSI (12.4 bar) and up to 380°F (193°C). Its 2-gallon stainless steel reserve tank feeds the 1.5-gallon boiler while the machine runs — eliminating the pressurize-cool-refill cycle that interrupts work on fixed-tank units. The Industrial 400 runs on 110 VAC at 18 A (or 220 VAC at 9 A) and is ready to clean in minutes, with no plumbing required. Made in the USA.

Industrial-Grade Boiler, Continuous Fill, and Comprehensive Safety Systems

• 1.5-gallon stainless steel boiler with separate 2-gallon stainless steel reserve tank for continuous operation
• 180 PSI / 12.4 bar output pressure — 80% higher than the TS10 — blasts through carbonized grease and industrial residue
• 380°F / 193°C maximum steam temperature
• 97% dry vapor output keeps moisture-sensitive surfaces safe; no chemical additives required
• Low water alarm, high-pressure relief valve, pressure limit switch, and temperature high cut-off
• Heavy-duty stainless steel body; 15-foot stainless steel steam hose with gun included

Why the Therma-Steem Industrial Model 400 Costs More

Made in the USA, this machine has an all stainless steel body, a 1.5-gallon stainless steel boiler and an Incoloy heating element. A 2-gallon stainless steel reserve tank feeds the boiler for continuous fill, so the operator can refill it while the machine runs. The boiler has a lifetime warranty. The machine warranty covers parts only for 1 year from the date of shipment. Installation labor is excluded.

Industries Where the Industrial 400 Delivers Results

The THE-IN4's combination of high pressure and high temperature makes it the standard choice for applications that would overwhelm a lighter-duty steam cleaner. Food processing facilities use it to sanitize conveyor belts, vats, slicers, and stainless steel prep surfaces. Hospitality operators clean commercial kitchen exhaust hoods, tile grout, and laundry areas between chemical treatments. Auto detailers and fleet maintenance shops use the 180 PSI pressure to break loose road grime from wheel wells, undercarriages, and engine bays. The continuous-fill reserve tank means operators can work through an entire shift on a single machine without downtime.

Continuous Fill vs. Fixed Tank and Included Accessories

The defining advantage of the Industrial 400 over models like the TS10 is continuous fill: water from the 2-gallon reserve tank is fed into the pressurized boiler through an automatic fill system, so the machine never needs to be shut down, cooled, and refilled mid-job. The complete package includes a 15-foot stainless steel hose with gun, 20″ and 36″ wand extensions, nylon/brass/stainless steel brushes in multiple sizes, specialized brushes for curved surfaces and zero-degree blasting, terry cloth towels, microfiber cloths, handheld squeegee, gloves, safety glasses, funnel, and hardware for assembly.

What's in the Box

• Instructional manual and DVD
• Terry cloth towels (2)
• Hex bolt for handle attachment
• Washers for handle attachment
• Wing nut for handle attachment
• Double wire snap pins
• Funnel (plastic)
• Triangle microfiber cloth
• Handheld squeegee
• Floor microfiber cloth
• 2 1/2" nylon screw-on brush
• 1" nylon screw-on brushes (3)
• 1" brass screw-on brushes (3)
• 1" stainless steel screw-on brushes (3)
• Curved nozzle/brush attachment
• Zero-degree blast attachment
• Triangle brush
• 20" wand extension
• 36" wand extension
• 15 ft stainless steel hose with gun
• Gloves
• Safety glasses
• Floor brush
• 20" extension
• 3' extension

Video