What’s the fuss all about?
This is a new type of water heating system. Before in the blog, we’ve covered both how tank and tankless water heaters work, but the Demand Duo is unlike both. That’s because it is both. The Demand Duo Hybrid Water Heater combines a tankless unit with a traditional storage tank in one system.
- A Smarter Way to Heat Water
- The Demand Duo Gives You Both
- Ultimate Hybrid Water Heater
- The Next Generation of Water Heating
Water is heated by the tankless heater and stored in the tank, giving you both fast heating performance and a ready supply of hot water — the best of both worlds.
Benefits of Water Softners
Enjoy continuous hot water performance with advanced tankless technology that heats water on demand while maximizing energy efficiency.
Combines the benefits of high-capacity storage with tankless performance, giving you greater hot water availability during busy periods.
Designed to handle heavy commercial and multi-use applications, ensuring reliable hot water even during the highest usage times.
Delivers steady hot water temperatures and dependable performance for businesses, large households, and demanding environments.
Simplified design reduces installation time and complexity, helping lower labor costs and minimize disruption to your property.
Space-saving compact design fits into tighter mechanical rooms while still providing powerful hot water performance.
Built with advanced components and durable technology designed for long-term reliability, helping reduce maintenance needs.
How it works
The Demand Duo combines the fast, energy-efficient performance of a tankless water heater with the reliable storage capacity of a traditional tank system. The tankless unit handles all the heating while the storage tank keeps 119 gallons of hot water ready for use, delivering powerful and consistent hot water performance even in high-demand commercial environments.
How it compares to other options
The Demand Duo is built for longer-lasting performance by using the tankless unit for all heating while the tank simply stores hot water. This reduces heat stress on the tank, extends system lifespan, increases usable hot water capacity, and provides longer warranty coverage than traditional tank heaters.
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Longer Lifespan with Reduced Heat Stress
The tankless unit performs all the heating, helping protect the storage tank from constant heat exposure and extending the life of the system.
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More Usable Hot Water Capacity
With fewer internal components inside the tank, the Demand Duo maximizes storage space to provide more usable hot water than traditional tank heaters of the same size.
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Longer Warranty Coverage
Reduced wear and tear on the storage tank helps the Demand Duo deliver extended reliability and longer warranty protection compared to traditional tank water heaters.
Longer Lifespan with Reduced Heat Stress
How to get one installed and other resources
The Demand Duo is a great solution for schools, churches, restaurants, salons, kitchens, and other businesses with high hot water demands. Contact us today to learn more or schedule an installation for your commercial property.
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A Demand Duo™ water heater combines tankless heating technology with a small storage tank to deliver fast, consistent hot water. The tank provides immediate hot water while the tankless heat exchanger continuously heats water as it flows. This hybrid design helps homes in Minneapolis and the Twin Cities get both quick delivery and high-capacity hot water performance.
A Demand Duo™ hybrid system blends the benefits of tank and tankless water heaters. Traditional tank heaters store hot water but can run out, while tankless systems heat water on demand but may have a startup delay. Demand Duo™ systems use a small storage tank with tankless technology to provide fast hot water and a continuous supply for larger households.
Homeowners in Minneapolis and the Twin Cities often upgrade to a Demand Duo™ system when they need higher hot water capacity for multiple bathrooms or larger families. These systems work well for homes that frequently run multiple showers or appliances at once and want improved performance compared to standard tank water heaters.
Yes. In many Minneapolis and Twin Cities homes, a Demand Duo™ water heater can be installed as a replacement for an existing gas water heater. Installation may require venting adjustments or gas line evaluation, depending on the home’s current setup. Our technicians review the system layout to ensure safe installation and proper performance.
Most Demand Duo™ water heater installations in Minneapolis and the Twin Cities take approximately 4–6 hours, depending on venting, gas supply, and installation conditions. The process typically includes removing the old unit, installing the hybrid system, connecting venting and gas components, and testing the system to ensure safe and efficient operation.
Yes. Demand Duo™ water heaters typically include manufacturer warranties covering major components, along with workmanship coverage on installation. Warranty terms vary by model, but many systems include extended coverage for the heat exchanger and parts. Our technicians review warranty details with homeowners so they understand the protection included with their new system.
Yes. Water Heaters Now provides commercial water heater installation and repair services throughout Minneapolis, St. Paul, and the Twin Cities metro area. When possible, our technicians can respond quickly to commercial water heater issues to help restore hot water and minimize disruption to your business operations. Fast service helps keep restaurants, apartment buildings, and facilities running smoothly.
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