The Best Boat Heater 2023 does more than keep your boat warm; it provides safety and peace of mind for your most critical systems, including your engine compartment. When engines freeze or attract mold and mildew, you suddenly have an inoperable boat that's too dangerous to move. 

Xtreme Heaters makes engine compartment heaters and boat bilge heaters that are 

What is the Best Boat Heater in 2023?

Xtreme heaters are built to last and are among the most affordable, safest, reliable, and efficient heaters available. We also created heaters that are intuitive to install with our mounting system and keep your engine compartment dry, safe, and mildew-free. 

Unlike many other heaters you'll find on the market, Xtreme Heaters automatically turn on at 40 degrees Fahrenheit and off at 55 degrees Fahrenheit. The results? You end up with a highly efficient heater that's safe to use even when unattended.

Are Boat Heaters Safe?

The best boat heater in 2023 is safe due to Positive Temperature Coefficient technology. Xtreme Heaters use this self-limiting functionality to automatically turn off once they reach an operating temperature of 55 degrees Fahrenheit. The seamless operation and safety standards make our heaters incapable of overheating

In general, boat heaters can be dangerous and cause issues, including:

Carbon Monoxide (CO) Poisoning

Boat heaters that use fossil fuels, such as propane or diesel, can produce CO. This poisonous gas causes headaches, dizziness, weakness, nausea, and even death. It is essential to ensure that the heater is properly vented to the outside of the boat and to install a carbon monoxide detector on the boat to alert you if the levels become dangerous.


Boat heaters relying on fossil fuels can also pose a fire risk if they are not adequately maintained or malfunction. It is vital to follow the manufacturer's instructions for maintaining the heater and to regularly inspect it for signs of wear or damage.

Do I Need a Boat Heating System?

You may need a comprehensive boat heating system if you're cruising around a chilly, icy lake and need comfort from the wind. An engine compartment heater won't warm up your entire boat unless it's quite small and you're not looking for an environment where you can strip off your coat, hat, and gloves. 

A boat heating system is costly and needs to be worth the trade-off. If you want to spend all day on the water with friends and family, you may want a robust heater. But a boat bilge heater is ideal if you love the cold, don't mind the wind whipping, and just want protection and warmth for your boat.

Deciding to install a boat heating system means choosing a system that is appropriate for your vessel and following proper safety guidelines when using it. Xtreme Heaters makes engine compartment heaters in three sizes to align with your needs and budget. Our heaters can also be used for RV basements, sheds, and other small structures with critical components that need protection, like plumbing and engines. 

Can I Skip Winterizing My Boat If I have a Heater?

Winterizing your boat depends on your needs, climate, and long-term goals. Depending on the size of your boat, winterization usually runs a few hundred dollars up to $750. It's still a cheaper option than repairing it from damage or expanding ice. 

Your boat's hull is at risk for damage in water that constantly freezes and thaws. Yet if you just need some protection from the temperatures outside to start plunging, the best boat heater in 2023 may prove a better option. 

Xtreme Heaters will save you the hassle of trying to winterize your boat to protect your engine. However, you'll need something to address the drops of water that could crack and freeze your hull and other areas of your boat. The good news is once your boat is dry and winterized, you can leave Xtreme Heaters unattended. They're safe to use, even while unattended, and prevent mildew and mold from taking root.

Next Steps

Spend more time on the water without breaking the bank with the best boat heater in 2023. Browse our entire selection today from small to extra large, or get in touch to find out which heater will work best for your size boat.