If the tank runs cold before the second shower is done, or the dishwasher and laundry can’t both run without someone losing hot water, that is the exact problem an on-demand system solves. A Navien condensing tankless unit heats water the moment you open a tap and keeps supplying it for as long as the tap is running, so back-to-back showers stop being something the household has to plan around.
The savings come from what the system doesn’t do. A storage tank reheats the same forty or sixty gallons around the clock whether anyone touches it or not. A tankless unit fires only when there’s a demand for hot water, so you’re not paying gas to keep a full tank warm overnight.
How On-Demand Hot Water Works:
The unit senses water flow when you open a hot tap, then heats the water as it passes through and out to the fixture. Nothing is stored, so there’s nothing to run empty and nothing sitting idle losing heat. A larger home that pulls hot water from several places at once can run more than one unit together, so supply keeps pace with the busiest stretch of the day.
Once you’ve decided the switch makes sense, the next question is usually what the install actually involves in an older Cowichan Valley home. That’s covered on our tankless water heater installation page, including how we size gas and handle venting on a retrofit.
Navien’s Condensing Combi Gas Boiler/Water Heaters are the ideal solution for customers who need both domestic hot water and a space heating application. Unlike conventional boilers, Navien’s Combi Gas Boiler/Water Haters heat water only when needed, making it environmentally sound as well as cost efficient.
Already running a Navien unit that’s short-cycling or throwing an error code? We handle tankless water heater repair across Duncan and the Cowichan Valley.
There’s no need to putting off a more Energy Efficient, Cost Effective home comfort system.
