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Bilge Heaters / Engine Compartment Heaters

7 Items
Caframo Pali 9510 400W 12VAC Engine Compartment Heater
Engine Compartment Heater, Pali 9510, 400W 12VAC - Caframo
Pali 9510 400W 12VAC Engine Compartment Heater Protects your engine from freezing in engine compartments up to 80ft 3 by utilizing an internal …
Your price: $199.99
List price: $249.99
In stock

Bilge Heater (Xtreme Heaters)
Engine Compartment / Bilge Heater - Xtreme Heaters
Bilge heaters built with new technology makes Xtreme the smart choice for the serious boater. Xtreme forced air heaters are small, highly efficient …
Starting at: $311.77
List price: $366.79
In stock

Xtreme Ventilation Parts & Accessories
Bilge Heater Mounting Brackets - Xtreme
Quick Release Bracket for the Xtreme Engine Compartment Heaters.   These brackets are designed to allow you to easily install and remove your …
Starting at: $34.57
List price: $45.59
In stock

Engine Compartment Heaters - BoatSafe
Our mid-sized marine bilge heater provides forced-air heat through a patented case design to keep your engine compartment safely above freezing. The …
Starting at: $301.75
List price: $355.00
In stock

Complete Heater Kits (Heater Craft)
Complete Heater Kits - Heater Craft
Compatible with an I/O or inboard engine with either a freshwater-closed or raw-water open cooled system. All heaters come equipped with a 12V DC fan …
Starting at: $332.34
List price: $402.49
In stock

Replacement Heater Core (Heater Craft)
Heater Replacement Parts - Heater Craft
Replacement tube and fin heater core for 300H and 400H hydronic heater. 5/8" hose barb. Includes 1-Tube and fin style heater core.
Starting at: $100.13
List price: $121.59
In stock

Marine Air Heater (Webasto)
Marine Air Heater - Webasto
Webasto Air Top diesel fuel air heaters provide continuous heating output via stepless modulation, ensuring constant cabin temperatures and a better …
Starting at: $3057.14
In stock

7 Items
Pali Engine Heater Now Available!
Save On Engine Compartment Heaters
Bilge Heaters On Sale!
Heater Craft
Boating Know How

Xtreme Heaters Presents: Choosing The Right Engine Compartment Heater for Your Boat

There are a number of factors that go into choosing the correct bilge heater or engine compartment heater for your boat. Some of these will do with your location and others with the specific type of boat. Another thing to consider, are you looking to extend your boating season, or are you looking to avoid winterizing your boat altogether? Lets start with the following basic guidelines and then factor in information about your local weather conditions as well as where and how your boat is being stored. 

  1. Generally speaking, the small Xtreme Heater (300 watt) is best for small boats with tight engine compartments. This can include ski/wake boats, runabouts and deck boats that are up to 21' in length. 
  2. The medium heater can handle larger engine compartments typically found in smaller cruisers, or runabout boats of up to about 26' in length. These can also be used for more protection on a smaller boat in climates with a deep freeze.
  3. Large cruisers or any boat with multiple engines (and large engine compartments) would need a large heater (600 watt). There is generally more equipment to protect, including fresh water systems, strainers, generators, etc.  Some houseboats or large cruisers, with wide beams may require 2 heaters.


How Big Is Your Engine Compartment?

Begin with figuring a rough volume of the space you are trying to protect. A simple width x height x depth calculation will give you a starting point. Remember that any open space that your engine space is connected to must be figured into it as the heat generated will be shared with any connected space. Volume of space is only a starting point when choosing the right heater - larger areas will require higher heating capacity.


What Is In Your Engine Room?

The more equipment in your engine space and the more cluttered it is, it will be more challenging to circulate warm air. If you have multiple engines, plumbing systems, air conditioning, etc. in your the space you are heating, it may be a better idea to install 2 small heaters rather than one large heater. If you have a smaller boat with just a single engine and one or two batteries, a single heater will work well in circulating the air around the space.


Weather / Storing Conditions

One of the biggest considerations is how cold does it get (and how cold does the water get) and how long will it stay below freezing? Also, is your boat stored on the water, on a lift, or on land?


There are many factors that go into choosing your Xtreme Heater, including boat / engine compartment configuration, weather conditions, storage location, etc. The above are guidelines to help you make an informed decision but with so many unknown variables involved, it is impossible for us to make a definitive recommendation for a specific boat. Shop the entire selection of iBoats Engine Compartment Heaters to find the right fit for your boat.

Go ahead - squeeze in a little extra boating, but save now on all your boat winterizing & upkeep products!