MSR Hydronic Heater - Fan Heater Dual 4" 16.5K Btu | 942-12V
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Dual 4-Inch Outlet Hydronic Heater
The MSR 942-12V uses a five-pass water coil and two fans to distribute heat through a pair of 4-inch ducts. The dual-outlet layout helps spread warm air around a larger cabin.
Key Features
- 16,500 BTU heat-output rating.
- Two 12 V fans, rated 0.36 A each.
- Two 4-inch air outlets and 3/4-inch female pipe-thread water connections.
- Includes ducting, duct clamps and outlet grilles.
- Dimensions: 5.75 inches high × 13 inches wide × 8.5 inches deep.
Installation Notes
Confirm the 12 V supply, hot-water circuit and clearance for both 4-inch duct runs. Follow the heating-system instructions for filling, bleeding and leak testing, and keep the air paths unobstructed.
Parts Desk Insight
This heater transfers heat from circulating hot water. Check the heating source and coolant flow as well as fan operation when diagnosing low cabin heat.
- Brand: MSR
- Manufacturer part #: 942-12V
- Sold as: EA
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.