If you are considering upgrading your water heating system, you might have come across tankless coil water heaters as an option. These systems offer on-demand hot water by using your home's existing heating system rather than a dedicated storage tank.
But are they the right choice for your home? Let's explore how they work, their benefits, drawbacks, and ideal applications.
How Tankless Coil Water Heaters Work
A tankless coil water heater functions by running cold water through a heating coil inside your home's boiler or furnace. When you turn on a hot water tap, the water is instantly heated as it passes through the coil, providing hot water on demand.
Unlike traditional storage tank water heaters, this system does not store hot water, eliminating standby heat loss.
Benefits of Tankless Coil Water Heaters
Energy Efficiency – Since these heaters only heat water when needed, they eliminate standby energy losses associated with traditional tank-based systems.
Space-Saving Design – Without the need for a separate hot water storage tank, these systems take up less space, making them ideal for smaller homes.
Unlimited Hot Water – As long as the heating system is running, you have a continuous supply of hot water.
Lower Maintenance Needs – With fewer components and no storage tank, these systems generally require less maintenance compared to traditional water heaters.
Longer Lifespan – Tankless systems tend to last longer than storage water heaters, with proper maintenance extending their operational life.
Drawbacks to Consider
Dependent on Heating System Operation – These water heaters work best in colder climates where the home's boiler is frequently running. If your heating system is off or infrequently used, hot water availability may be inconsistent.
Limited Hot Water Flow – While tankless coil water heaters provide endless hot water, their flow rate may not be sufficient for simultaneous multiple uses, such as running a shower and dishwasher at the same time.
Higher Initial Installation Cost – While they can be cost-effective in the long run, the initial setup, especially if upgrading your boiler, may be expensive.
Efficiency Loss in Warmer Months – During warmer months, when the home’s heating system is rarely used, these heaters become less efficient and may require additional energy to operate.
Who Should Consider a Tankless Coil Water Heater?
Homes with an Existing Boiler System: If you already use a boiler for home heating, a tankless coil water heater can be an efficient and space-saving option.
Cold Climate Residents: These systems work best in colder regions where the heating system runs frequently, ensuring a consistent hot water supply.
Smaller Households: If your home does not require large amounts of hot water at the same time, a tankless coil water heater could be a suitable choice.
Tankless coil water heaters can be an excellent choice for homeowners with an existing boiler system in colder climates. They offer efficiency, space savings, and continuous hot water when used correctly.
However, if you live in a warmer climate or require high water flow rates for multiple simultaneous uses, you may want to explore other options, such as indirect water heaters or traditional tankless water heaters.
Before making a decision, assess your household's hot water needs, heating system type, and climate to determine if a tankless coil water heater is the best fit for your home.
