Can you use a tankless water heater on a boat?

Tankless propane water heaters carry serious risk of causing carbon-monoxide poisoning or oxygen depletion when mounted in a tight or sealed space. Because a boat is more tightly sealed than a shoreside home, the carbon monoxide is more likely to become trapped.

How much does an instant water heater cost?

Prices range from about $170 for small gas-fired units to more than $2,000 for high-output heaters that can supply two showers at the same time; $1,000 is about average. Tankless electric heaters run between $90 and $900. First-time installation costs run more than a simple tank replacement.

How long does a marine water heater last?

Most tank water heaters have an average lifespan of 8 to 12 years, and tankless water heaters can last as long as 20 years.

What size water heater do I need for my boat?

The most available tank sizes for most marine water heaters are in the range of 6 gallons, as the most common size, up to 20-gallon.

Are tankless water heaters cheaper?

While month-to-month water heating costs are cheaper with a tankless unit, it could take years to make up for the high initial cost. Over time, a homeowner will likely come out ahead, but according to Consumer Reports, the energy savings for going tankless add up to $75 per year, on average.

How does a boat hot water heater work?

A marine water heater is simply a small, insulated tank downstream of the pump. When AC power is available, the electrical element (controlled by a thermostat) heats the water. Away from the dock, the hot engine coolant is routed through the coiled tube to heat the water in the tank when the engine is running.

What is a hot water calorifier?

A calorifier is an indirect-fired water heater to provide hot water in a heating and hot water system. Indirect fired means the water heater does not contain a burner. It is a storage water cylinder with one or more heat exchanger coils which contain hot liquids (water or solar fluid).