Choosing the Right Heater for: Ski, Wake & Watersports boats and runabouts to 24ft

Wake and ski boats

Wake and ski boats often have a very small engine compartment, and in some cases just an engine cover or “hump” over the motor. In these cases, the Small (400 watt) Xtreme heater should take care of your needs. If your boat is stored on a lift or trailer, exposed to a cold wind, it is advised to choose the next
size larger, Medium (600 watt) heater. Installation tips  

 Testimonial:

My buddies were impressed with the setup since we were still out long after they had winterized
Overall the heater appears to work good. We had a wakeboard session Thanksgiving weekend and I put it up the first week of Dec (saving Nov dry storage fees). Plan is to have it out late Feb for ballast and Perfect pass installs and be on the lake by St Patrick’s Day (40 deg water temps).
Again living in Kansas, my goal was to extend my spring and fall by 6-8 weeks each and have some extra insurance the block would not freeze. My buddies were impressed with the setup since we were still out long after they had winterized.
— Brian,

Runabouts

Runabouts with outdrives often utilize the full width of the boat for the engine compartment. This configuration expands the volume to be heated significantly, warranting our Medium (600 watt) heater. As with the above example, choose the next size larger for extreme conditions (wind, deep freezes, long periods of freezing temps).

Installation Tips:


Placement:
Position the heater near the base of the engine compartment to achieve optimal heat distribution, keeping it clear of direct contact with other components. For best results, angle the heater so it directs warmth toward the most exposed areas, like the outdrive or V-drive in inboard boats, as these parts can channel cold from the outside into the compartment. Allowing for some air circulation around the heater will improve its effectiveness, helping it shield these vulnerable areas from freezing conditions.

Clear Airflow:
Ensure there’s a clear airflow pathway, especially on the exhaust side of the heater, as obstructions here can significantly impact its performance. A clean, unobstructed compartment maximizes heat distribution, with the air flow being crucial to spreading warmth effectively. Remember, the more air the heater moves, the better the heat will distribute throughout the space, protecting your engine even in cold conditions.

Securing the Heater:
Use the brackets or screws provided to mount the heater securely within the engine compartment. A stable installation minimizes vibration, preventing the heater from shifting during transport or when the boat is in operation. Ensuring a firm attachment not only protects the heater but also enhances its efficiency by maintaining a consistent position for optimal heat distribution.

Power Connections:
When routing the power cord out of the engine compartment, ensure it’s done in a way that avoids creating air leaks. Leaving even a small crack in the engine hatch acts like a chimney, drawing warm air out and compromising the heater’s effectiveness. Seal any openings around the cord to retain heat within the compartment and ensure consistent protection against the cold.

Seal Air Leaks:
Cover any air leaks around the engine compartment to retain warmth. Fresh air vents can allow cold air to draft in, pushing warm air out, so keeping the compartment as sealed as possible helps maintain steady temperatures. Additionally, inspect for leaks that may extend to the front of the boat—sealing these off will prevent cold air from entering and flushing out the heated air, maximizing the heater’s performance in protecting your engine.

Electrical Connection:
Make sure the power source is suitable and weatherproof if exposed to the elements. Use marine-grade connectors for durability and safety.

Check Regularly:
Test the heater before extreme cold hits to confirm it’s functioning properly. Regularly inspect for wear or damage to maintain reliable operation.

These steps will help keep your wake or ski boat engine protected and ready to hit the water even in colder months!

 

        Winterizing a ski boat video 

Winterizing a small run about boat .

   Disclaimer:

These guidelines for heater selection are intended to help you make an informed choice regarding the size, number and placement of your Xtreme Engine Compartment Heater(s).  The infinite number of variables involved, including boat and engine compartment configuration, storage location, local weather conditions or extreme weather events make it impossible for us to make definitive recommendations for specific boats in specific locations.  Our testimonials page is a great place to see boat and heater combinations that our customers have found effective.