Description
Overview
Choose BU-1001-0-12 when space is tight and a simple, direct-bolt heater is the best fit. The rear-exit core keeps hoses tidy, while the compact blower moves air smoothly for steady, quiet heat. The cabinet uses a square 2.75″ × 2.75″ thread pattern so you can mount it to your own bracket or panel.
Key Features
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Heat / Airflow: 20,000 BTU/hr, 220 CFM, 3 speeds.
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Electrical: 12 VDC (13.6 V nominal), ~4.3 A.
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Plumbing: Rear exit; 5/8″ heater hose connections (x2).
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Mounting: 1/4-20 threaded holes (x4) on a 2.75″ × 2.75″ pattern; edge offset ~0.51″; lower pair ~1.85″ from base.
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Finish: Durable black powder-coat steel.
Dimensions & Mounting
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Envelope (approx.): 9.52″ L × 6.45″ H × 3.75″ D; blower OD ~5.83″; front plate width ~5.31″.
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Mount pattern: 2.75″ × 2.75″; 1/4-20 threads (x4).
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Designed to bolt directly to your structure—no mounts included.
Wiring
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Low: Yellow
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Medium: Red
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High: Orange
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Ground: Black
Connector pinout is shown from the non-wire end in the wiring diagram.
Service Parts (major items)
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BT3-0106 — 12V SPAL mini squirrel-cage blower
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BT6-1100 — heater core
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BT100534 — blower plate; BT100535 — front housing; BT100525 — side panels (x2)
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BF-286 foam strips (6.0″ × 0.5″ × 0.125″ ×4; 5.82″ × 0.5″ × 0.25″ ×4)
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Hardware: #10-24 × 1/2″ flat U/C (x12), 1/4-20 × 1/2 spinlocks (x8), M4-0.7 × 12 mm (x4).
Specifications
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Model: BU-1001-0-12
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Type: 12V cab heater, rear exit, no mounts
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Heat Output: 20,000 BTU/hr
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Airflow: 220 CFM
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Electrical: 13.6 VDC, ~4.3 A
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Hose Connections: 5/8″ (x2)
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Finish: Black powder-coat
Applications
Ideal for compact cabs in ag, construction, forestry, and specialty equipment where you need dependable heat, quick install, and rear-exit plumbing without added mounting hardware.
Interchange Numbers:
10-9830, 25022443, 292-1277, 2RD4108, 4379-R2900, 4379-R2900, 4379-R2900P, 4379-R2900P, R-290-0P, RA10250, RDH R290 0, RDHR2900P, RDTR2900P,





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