Raritan WH16 Thermostat Assembly — Marine Water Heater Replacement Part (78-WH16)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
OEM Thermostat Assembly for Raritan Marine Water Heaters
The Raritan WH16 Thermostat Assembly (78-WH16) is the factory replacement thermostat for Raritan marine water heaters. When your water heater is failing to maintain temperature, cycling erratically, or not heating at all, the thermostat assembly is the first component to diagnose — and this is the correct OEM replacement to restore proper operation.
Key Details
- OEM Replacement Part — factory Raritan component; direct fit for compatible Raritan water heater models
- Thermostat Assembly — controls heating element activation and temperature regulation
- Lightweight — 136g; ships standard parcel
Note: Confirm compatibility with your specific Raritan water heater model before ordering. Consult the Raritan WH-series service documentation or contact Raritan Engineering for model cross-reference.
Parts Desk Insights
SKU 78-WH16 is a Raritan OEM thermostat assembly under the Raritan Engineering brand. This is a service/repair part — position it for customers with existing Raritan water heaters experiencing temperature control issues, not as a standalone purchase. Verify which Raritan WH-series models this thermostat fits before recommending; the WH16 designation likely corresponds to a specific heater model or wattage range in the Raritan lineup — cross-reference with Raritan’s parts catalog. At $215.49 retail vs. $135.40 cost, margin is reasonable for a specialty part. No image on file — a clear photo of the assembly with part number visible would significantly aid customer identification and reduce returns.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.