Reliability & Maintenance tank water heater, the tankless variety tends to be more reliable and require less maintenance. Water heaters with a storage tank have more moving parts than tankless models, so they tend to need more frequent maintenance or repair.
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.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service.
Before you commit to buying a tankless water heater, the primary drawbacks to know include: Higher upfront costs. Tankless water heaters are, on average, quite a bit more expensive to buy and install than tank water heaters. Access to fuel.
Switching to a tankless water heater can help you save on your energy costs, with potential savings of up to 50%, according to the U.S. Department of Energy. Additionally, tankless water heaters are reported to be 24% to 34% more energy efficient than storage tank water heaters by the same source.
You can go with a small tank and a small tankless water heater at the same time. You install this as a single device (1.5 gal per minute) tankless water heater with the output going to the tank and the tank feeding your household. If you need a lot of hot water quickly both water heaters run at the same time.
Some people hesitate to decide on a tankless water heater because they can be a slightly higher cost; however, you get significantly more life out of one. A standard water heater tank lasts about 8-12 years. A tankless water heater can last as long as 25 years!
The federal tax credit for tankless water heaters in 2024 is an excellent opportunity for homeowners to save money while investing in energy-efficient water heating solutions. This tax credit is effective from January 1, 2023, to December 31, 2032.
A tankless water heater cannot provide hot water faster than its ability to heat the water. While a tank unit can provide hot water for multiple uses at once, a tankless unit might not be able to support simultaneous usage, such as washing dishes, taking a shower and running a washing machine all at once.
Because tankless water heaters only consume energy when you need hot water, they're more energy efficient, saving you money on water and energy bills.
Keep your water heater away from outside elements
If your tankless heater is exposed to extremes weather conditions, it will run a greater risk of premature failure. So, make sure your appliance is away from doors and windows, and never installed in the garage or basement.
Electric Tankless Water Heaters
They're less expensive than gas-powered ones but aren't efficient if you run multiple hot water devices. They may struggle to keep up with multiple appliances at the same time.
For many homeowners, electric water heaters are the go-to choice because of their cost-effectiveness and simplicity. They use heating elements that are fully submerged, ensuring better energy efficiency. They're especially popular in smaller households that don't require a large supply of hot water at once.
Scale buildup can reduce the efficiency — and even shorten the lifespan — of many items in a home. Tankless water heaters are particularly sensitive to hard water, but so are dishwashers, ice-makers and washing machines.
More expensive installation and maintenance.
Tankless systems require special venting, rerouted gas lines, possibly multiple units for a larger household, and sometimes maintenance like installing a softener.
One of the most common questions asked by consumers about tankless water heaters is how long they will last. A tankless water heater can last anywhere from 15 to 20 years with proper maintenance and operation. In comparison, a standard tank water heater normally has a working life of 10 years or less.
tank water heater, the tankless variety tends to be more reliable and require less maintenance. Water heaters with a storage tank have more moving parts than tankless models, so they tend to need more frequent maintenance or repair.
The initial investment for a tankless water heater is typically higher, with prices ranging from $1,000 to $3,000 or even more, depending on brand, size, and specific features.
Additional Installation Costs
Tankless water heaters are much more complex than traditional hot water tanks. As a result, they require professional installation. If you're switching from a hot water tank to a tankless unit, you will likely need your gas lines rerouted, as well as a larger gas supply line.
You can't run out of hot water with tankless water heaters – unless, of course, the power supply is off or goes out. However, a tankless water heater can have trouble keeping up with demand if too many things require hot water all at once.
How long does it take for a On Demand or tankless water heater to pay for itself? The pay off time on a tankless water heater varies based on usage, utility rates and cost of installation. It can take from 7 to 10 years to pay for its self.
Tax Credits for Water Heaters
Rebates are available for high efficiency gas fired tankless, gas-fired storage and for heat pump water heaters. Gas-fired tankless with UEF ≥ . 95 are eligible for up to $600 in rebates.
Water Heater Tax Credit Details.
You can claim 30% of the project cost, up to a $2,000 maximum credit.
Tankless water heaters don't always fit into one category. Many of these appliances are Category IV, condensing with induced draft. Some fall into Category III, induced draft with higher temperature non-condensing flue gases.