The Wacker Neuson Air Duct is a genuine OEM component designed for the E1250S and E1250P hydronic heaters as well as the HSH380S hydronic surface heater series. As a direct OEM replacement, this part is manufactured to the same specifications as the original, ensuring a correct fit across LP/NG and Diesel fuel configurations. Compatible with standard and premium variants of the E1250 series, as well as generator-equipped HSH380S units, this air duct keeps your heating system operating as intended across demanding cold-weather jobsite conditions.
Key Features
- Genuine OEM Construction — Manufactured to original Wacker Neuson specifications, ensuring correct airflow geometry and duct integrity specific to hydronic heater applications.
- Direct Drop-In Replacement — Engineered to align with the existing mounting points and duct routing on E1250S, E1250P, and HSH380S units — no modification to surrounding components required.
- Broad Fitment Coverage — Compatible with LP/NG and Diesel fuel variants of the E1250 series, plus generator-equipped and standard HSH380S configurations.
- Maintains Heating Efficiency — A properly seated air duct directs combustion airflow precisely through the heat exchanger; a cracked or misaligned duct reduces heat output and can cause uneven temperature distribution.
- Fuel System Safety Relevance — Correct duct seating helps maintain proper air-to-fuel ratios in the burner assembly, supporting safe and efficient combustion in both LP/NG and Diesel-fueled heater configurations.
The air duct channels combustion air through the heater's burner and heat exchanger assembly, controlling the direction and volume of airflow essential to efficient heat production. In hydronic surface heaters like the E1250 and HSH380S series, consistent airflow is critical — without it, the burner cannot sustain proper combustion, leading to reduced heat output, increased fuel consumption, or burner lockout. A worn, cracked, or improperly fitted duct compromises the entire heating circuit and should be replaced promptly to restore full system performance.
Part Details
| Part Number | 5200016125 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Air Duct |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
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.
