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Tankless Water Heater Installation Services

Tankless water heaters, also known as demand-type or instantaneous water heaters, provide hot water only as it is needed. They don’t produce the standby energy losses associated with storage water heaters, which can save you money.

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Benefits of Tankless Water Heaters

  • Endless Hot Water Supply:
    • Provides a continuous flow of hot water, perfect for households with high hot water demands.
  • Energy Efficiency:
    • Only heats water when needed, reducing energy consumption and lowering utility bills.
    • Typically more efficient than traditional storage tank water heaters.
  • Space Saving Design:
    • Compact and wall-mounted, freeing up valuable floor space.
    • Ideal for homes with limited space or for installations in tight areas.
  • Longer Lifespan:
    • Generally lasts longer than conventional storage tank water heaters, often up to 20 years with proper maintenance.
    • Reduced risk of leaks and water damage.
  • Reduced Risk of Water Damage:
    • No large storage tank that can rupture or leak, minimizing the risk of flooding.
  • Environmentally Friendly:
    • Lower energy usage results in reduced carbon footprint.
    • Many models are designed to be eco-friendly and comply with stringent environmental standards.
  • Improved Water Quality:
    • No storage tank means less risk of rust and scale buildup, leading to cleaner hot water.
  • Customizable and Scalable:
    • Can be installed in parallel for larger homes or businesses to meet higher hot water demands.
    • Allows for precise temperature control for comfort and safety.
  • Rebates and Incentives:
    • Many tankless water heaters qualify for energy efficiency rebates and tax incentives, further offsetting the initial investment cost.
tankless water heater

How They Work

Tankless water heaters heat water directly without the use of a storage tank. When a hot water tap is turned on, cold water travels through a pipe into the unit. Either a gas burner or an electric element heats the water. As a result, tankless water heaters deliver a constant supply of hot water. You don’t need to wait for a storage tank to fill up with enough hot water. However, a tankless water heater’s output limits the flow rate.

This means that even the largest, gas-fired tankless water heater cannot supply enough hot water for simultaneous, multiple uses in large households. For example, taking a shower and running the dishwasher at the same time can stretch a tankless water heater to its limit. To overcome this problem, you can install two or more tankless water heaters, connected in parallel for simultaneous demands of hot water for necessary use of hot water throughout the home at the same time.


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Other Elements to Consider


The initial cost of a tankless water heater is greater than that of a conventional storage water heater, but tankless water heaters will typically last longer and have lower operating and energy costs, which could offset its higher purchase price. Most tankless water heaters have a life expectancy of more than 20 years. They also have easily replaceable parts that extend their life by many more years. In contrast, storage water heaters last 10–15 years.


Tankless water heaters can avoid the standby heat losses associated with storage water heaters. However, although gas-fired tankless water heaters tend to have higher flow rates than electric ones, they can waste energy if they have a constantly burning pilot light. This can sometimes offset the elimination of standby energy losses when compared to a storage water heater. In a gas-fired storage water heater, the pilot light heats the water in the tank so the energy isn’t wasted.

Installation and Maintenance

Proper installation and maintenance of your demand water heater can optimize its energy efficiency. Proper installation depends on many factors. These factors include fuel type, climate, local building code requirements, and safety issues, especially concerning the combustion of gas-fired water heaters. Therefore, it’s best to have a qualified plumbing and heating contractor install your demand water heater.

Let NOW heating and air in help you select the best tankless water based on your family’s needs and affordability. Also, allow NOW heating and air to service your equipment in a timely manner to make sure it runs properly and lasts longer. Water heater maintenance can significantly extend your water heater’s life and minimize loss of efficiency. Talk to your NOW heating and air representative for more information on what to expect from your tankless water heater in the Denver area.

Denver’s Most Trusted Plumbing Contractor for Homeowners and Businesses

Now Heating & Air
8661 Rosemary St
Commerce City, CO 80022

Phone 303-287-8000