The Wacker Neuson Expansion Tank is a genuine OEM component designed for the HSH700G, HSH650, E2200, and E3000 ES series hydronic surface heaters and ground heaters. As a direct OEM replacement, this expansion tank is sourced from Wacker Neuson and built to the same specifications as the original part fitted at the factory. Compatible across a wide range of configurations — including units with lift bails, integrated 3 kW and 5 kW generators, and 700m hose setups — the is the correct part for keeping your hydronic heating system operating as designed.
Key Features
- Genuine OEM Fluid Containment: — Manufactured to Wacker Neuson's original pressure and volume tolerances, ensuring the tank correctly accommodates thermal expansion in the closed-loop heating circuit without over-pressurizing the system.
- Direct-Fit Replacement: — Engineered to connect directly into the existing coolant/fluid circuit of compatible HSH and E-series heaters, with no adapters or circuit modifications needed.
- Broad HSH and E-Series Compatibility: — Confirmed fitment across the HSH700G, HSH650, E2200, and E3000 ES families, covering ground heater, hydronic surface heater, lift bail, and generator-equipped configurations.
- Protects System Pressure Integrity: — A correctly functioning expansion tank absorbs fluid volume changes as the heating circuit warms and cools; a failed or leaking tank can cause pressure spikes, fluid loss, and heater shutdowns on the job.
- Verified OEM Part Number: — Part number 5000169582 is the authoritative Wacker Neuson reference for this component, giving you confidence you are ordering the right part for your specific unit.
An expansion tank is a sealed or partially pressurized reservoir connected to the closed-loop fluid circuit of a hydronic heating system. As the system fluid heats up, it expands in volume; the expansion tank absorbs that extra volume to prevent dangerous pressure buildup in the lines, hoses, and heat mats. When the system cools, the tank releases that fluid back into the circuit. If the expansion tank cracks, loses its pressure rating, or fails to hold fluid, the heating circuit can over-pressurize, trigger safety shutdowns, or develop leaks — leaving crews without heat when ground-thawing or concrete curing operations depend on it.
Part Details
| Part Number | 5000169582 |
|---|---|
| Old Part Number | 0169582 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Expansion Tank |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215, 5000620176, 5000620216, 5000620226, 5100017448, 5100017449 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| HSH650 | HSH650 | 5000620991 |
| E3000 ES Ground Heater, 3kW Gen | E3000 | 5100017801 |
| Hydronic Surface Heater, 700m hose | E700M | 5000620195 |
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.
