What do I need to know about a gas tankless water heater?

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.

Does tankless water heater use more gas?

Tankless water heaters that use natural gas are about 23 percent more efficient than a traditional storage version, which is about 60 percent efficient, according to the Department of Energy.

Can a tankless water heater use less gas?

Unless the manufacturer requires it, there is no need for a dedicated circuit. Does a tankless water heater use less gas? According to Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.”

What makes a tankless water heater break down?

Additionally, hard water (water containing high levels of minerals) can cause tankless water heaters to work harder and eventually break down. Due to this risk, some manufacturers require that you also install a water softening system, or the warranty is voided.

Which is better a gas or electric water heater?

Their financial savings, environmental friendliness and energy efficiency only sweeten the bargain! Compared to electric models, gas tankless water heaters have better cold-weather performance and average lower fuel costs over time. They’re also more reliable over the long term.

Is there a warranty on a Rinnai tankless water heater?

Rinnai units have a great track record for long-term performance. This tankless heater has as solid a reputation as you’d expect from the brands. We haven’t discovered any long-term issues or design flaws. You’re covered by warranty for 10 years on the heat exchanger, 1 year on labor, and 5 years on parts.

Can a tankless water heater be powered by gas?

Tankless water heaters can be powered by gas or electricity but even gas-powered tankless water heaters rely on an electric control panel to operate the system. So, regardless of the type of tankless water heater you have, you’ll be out of hot water in the event of a power outage.

What’s the flow rate of a tankless water heater?

Tankless water heaters are different in their rating system—they are sold according to the demand they can meet, the flow rate, and are measured in gallons per minute (GPM). The average GPM capacity of most residential tankless water heaters is between 2–5 gallons per minute, with many gas-powered units producing a higher flow than electric units.

How often should a tankless water heater be maintained?

It is recommended by the manufacturer including Navien to have the tankless maintained once per year in order for the heater to still be covered under warranty through them. Hoffmann Brothers Heating & Air Conditioning Inc Heating, Air Conditioning, Plumbing & Electrical is a full service company in St Louis, MO.

Where is the heat exchanger on a tankless water heater?

Since the heat exchanger is where the water is heated up by the Noritz dual flame burners, it is also where most of the stress in a tankless water heater occurs. For this reason, the Noritz Tankless Water Heater utilizes a heat exchanger with 25% thicker copper piping.