The Wacker Neuson Thermostat is a genuine OEM component designed for the HX50 and HX100 Heat Exchangers and the Pureheat Hydronic Heater series, including oil burner, gas burner, and diesel configurations. As a direct OEM part, is manufactured to the same specification as the original, ensuring correct temperature regulation and a drop-in installation with no adaptation needed. This thermostat is the right choice when accuracy and dependable heat output are non-negotiable on the jobsite. Confirm your model number before ordering — this part covers multiple Pureheat and HX-series units.
Key Features
- Calibrated Temperature Control: — Manufactured to OEM specification, this thermostat opens and closes at the precise temperature thresholds required for correct hydronic and heat exchanger operation — not an approximation.
- Direct OEM Replacement: — Part number 5000168655 installs directly into the original thermostat housing with no rework, matching the original mounting interface and connection points.
- Broad Heater Family Coverage: — Fits HX50 and HX100 Heat Exchangers as well as Pureheat Hydronic Heaters in oil burner, gas burner, and diesel variants.
- Consistent Heat Output: — A correctly functioning thermostat maintains stable output temperatures; a failed or stuck thermostat causes overheating, short-cycling, or insufficient heat delivery — all of which this genuine replacement resolves.
- Fuel System Safety Relevance: — In hydronic and indirect heating equipment, proper thermostat function is directly tied to safe burner cycling. Using a correctly rated OEM thermostat supports safe, code-compliant heater operation.
The thermostat in a hydronic heater or heat exchanger acts as the system's temperature gatekeeper — it monitors fluid or air temperature and signals the burner or pump circuit to activate or shut down based on set thresholds. When the thermostat is working correctly, the heater delivers steady, controlled warmth and the burner cycles efficiently. When it fails — whether stuck open or closed — the result is either continuous running that risks overheating or a burner that won't fire at all, leaving the unit unable to produce usable heat output.
Part Details
| Part Number | 5000168655 |
|---|---|
| Old Part Number | 0168655 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Thermostat |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HX50 Heat Exchanger | HX50 | 5000620431 |
| HX100 Heat Exchanger | HX100 | 5000620432 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190 |
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.
