The Wacker Neuson Fan is a genuine OEM component designed for the HI900D and HI900G series indirect-fired air heaters. Sourced directly from Wacker Neuson, this fan is built to the same specification as the original unit installed at the factory. It is confirmed to fit multiple HI900 configurations, including diesel skid units (HI900D) and natural gas skid units (HI900G) across standard, 3x16, and 4x12 arrangements. Keeping the correct fan in service ensures steady, controlled airflow through the heat exchanger — the core of what makes an indirect heater effective on the jobsite.
Key Features
- Genuine OEM Airflow Performance — Manufactured to the exact blade pitch and motor-mount spec of the original, ensuring the heater delivers its rated heat output without starved or turbulent airflow.
- Direct Drop-In Replacement — Matches the original mounting interface on HI900D and HI900G heater assemblies, so installation follows the same procedure as the factory unit.
- Broad HI900 Series Coverage — Compatible with diesel and natural gas skid configurations including standard HI900D, 3x16 skid, 4x12 skid, and HI900G natural gas variants.
- Combustion and Heat Transfer Integrity — A functioning fan maintains the correct air-to-fuel ratio inside the combustion chamber; a worn or seized fan can cause incomplete combustion, overheating, and heater shutdown.
- Critical Safety Function — The fan is integral to safe heater operation — loss of airflow can trigger thermal overload or produce dangerous exhaust conditions inside enclosed work areas.
The fan in an indirect-fired air heater draws combustion air across the burner and pushes heated air through the heat exchanger before it is delivered to the work area. Because the exhaust gases never mix with the supply air in an indirect heater, consistent fan performance is essential to both heat output and safe operation. When the fan degrades — through bearing wear, blade damage, or motor failure — airflow drops, the burner runs inefficiently, and safety shutoffs are more likely to trigger, leaving workers without heat in cold-weather conditions.
Part Details
| Part Number | 5000181821 |
|---|---|
| Old Part Number | 0181821 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fan |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 900D Heater-Indirect | HI900D | 5200014158, 5200014159, 5200014160 |
| Skid Indirect Air Heaters Natu ral Gas | HI900G | 5200014161 |
| HI 900G Heater-Indirect,3x16 | HI900 G | 5200014163, 5200014164 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
