Deciding on which tankless water heater to purchase can be overwhelming. There are so many factors to consider like if you want an electric, propane or gas unit. Do you know how much water you use? You need to know in order to get the appropriately sized unit.

Don’t worry because below this post you can check out the F.A.Q.

Once you’re knowledgeable about tankless water heaters, you can check out the Reviews to help you decide on your preferred unit.

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Frequently Asked Questions

How do tankless/On-demand water heaters work?

Tankless water heaters work on-demand; they only heat water when necessary. When a hot water fixture is switched on, or an appliance requires hot water, the heater will sense the requirement and heat water accordingly. Tankless water heaters continuously heat water through a heat exchanger. Instead of losing energy reheating and holding water when it is not required, tankless hot water heaters supply as much warm water as necessary.

How do I choose a suitable tankless water heater model for specific household requirements?

The simplest way to size an on-demand water heater for any application is to estimate the peak flow capacity which will need to be supplied by your water heater at any time. For non-commercial use, this will probably be the maximum number of showers that may be utilized concurrently, multiplied by the flow rate of the shower heads. A certified plumber should perform this kind of calculation. Once the maximum flow rate is determined, consult your specifications for each heater to determine which model meets your need. Please consult with your current plumber.

Will I receive instant hot water using a tankless water heater?

No. It’s a common misconception concerning tankless water heaters. A tankless heater will heat up water on demand instantaneously, but like a tank water heater, it will take the same period of time for the hot water to travel from the plumbing inside your home. If you need to get instant hot water, you’ll find recirculation pump systems available to hook-up to your tankless water heater. Please question your installer to see what options you might have in getting instant hot water at home.

Can I use my current ventilation for my tankless water heater?

No. by code, tankless water heaters must utilize Category III metal venting. Category 3 ventilation is anti-corrosive and gas tight. The venting has to be anti-corrosive because a little bit of acidic condensate forms during combustion. This moisture build-up can break down your current ventilation pipe’s galvanized metal and also cause significant destruction of your tankless water heater’s inner components. Most importantly, the venting must be gas tight to avoid co2 leakage. On-demand heaters use a powered exhaust fan to force gas out, in contrast to tank water heaters which use the natural draft.

Are there electric tankless water heaters out there?

Yes. You will find electric on-demand water heaters available on the market, but normally a single unit’s productivity is usually not enough with an entire home. Some other disadvantages include the broad range of energy consumption that is required to heat the water and it generally takes longer to reach the particular hot water temperature level from start-up. In locations where there isn’t any gas available, a few gas businesses do offer gas lines to become installed to your home. We now have heard of gas companies in a few areas to provide no cost gas line installation to property owners in their service regions.

How many tankless heaters will I need for my home?

Tankless water heaters are designed for a total home. A basic unit can provide up to 6.6 gallons per minute; a larger unit can offer up to 13.2 gallons per minute. A few heating units include the Quick-Connect feature that allows the same heaters to be linked to increase its output. How do we figure out how many gallons of heated water you need for your home? Here are several helpful tips:

  • How much hot water do you utilize at the same time? Bathtubs are usually 6-8 gallons per minute, and rain head showers and body sprays certainly need more hot water than a basic shower head. If your requirements are not met, then you need a bigger sized system or another identical system with the Quick-Connect function.
  • If you have three showers in your house and only utilize one, you may believe a small unit is substantial for your circumstance. Issues become apparent when you have guests over or if you have plans to sell the house, the usage of hot water exceeds the output of an undersized unit, leading to difficulties selling your property.
  • A unit’s GPM depends upon your tap water’s temp level; the cooler the tap water is, the more time the tankless water heater needs to heat up the water. We advise picking your heater based on your winter season’s tap water temperature level.

Where can I get a tankless water heater?

Units are not marketed through retailers. They may be only available at professional wholesale distributors. Tankless water heaters need gas line upgrades, and stainless steel vent runs as well as local code requirements. Therefore water heaters ought to only be installed by licensed professionals.

At what temp should the water heater be fixed?

The arranged temperature of the water heater is dependent upon how it will be used. A comfortable shower temperature shouldn’t be much higher than 105°F (temperatures above 125°F are scalding).

How can I change the temp on the water heater?

Many tankless water heaters come standard including a remote digital temperature controller, which allows one to adjust the water temp. With some units, the control panel can be installed in a remote area; wired as far as 300ft away from the unit. Water temp is displayed on the easy to use control panel; pressing the down and up buttons change the temperature.

Note: If you need to go above 140 deg.F, please contact your installer.(scalding can occur)

How much money can one save when replacing a tank water heater for a tankless one?

The California Energy Commission predicts that a water heater uses approximately 25% of all energy consumed by any household. Utilizing an on-demand water heater will allow a home to take advantage of reduced energy for heating water and cut water heating costs by half, which can save large sums of money per year. The savings will undoubtedly pay for your tankless water heater installation cost.

Is there a difference between a storage tank water heater and a tankless water heater?

Tank water heaters store and also heat water at all times, thus incurring higher operating costs, whereas on-demand water heaters only heat water as needed. Also, tank heaters have a very limited supply of hot water and will use up all your hot water while on demand water heaters produce an unlimited supply of hot water; you will never run out. Furthermore, the size of a household tankless heater is on the scale of a carry-on suitcase and can always be installed virtually anywhere on the inside or outside; this will permit you to recover valuable space in your residence.

What's the lifespan of tankless water heaters?

On-demand water heaters can last significantly longer than a regular tank heater. They are extremely reliable as units are made with the highest quality elements and put through rigorous testing along with quality control.

Does my gas line need upgrading?

Yes. On-demand water heaters do require a larger gas line since its required BTUs tend to be greater than tank water heaters. The Btus are higher because it requires energy to heat water to a set temperature in such a small amount of time. The gas line upgrade size will be determined by which tankless unit you choose along with the distance from the gas gauge.

So the more BTUs a tankless water heater uses, the more gas it consumes?

No. The volume of energy or BTUs necessary to heat up water is the same. A great way of detailing this is when you boil a pot involving hot water on your stove. Let’s say you boil two pots of water that are identical. However one is on high heat and the other on low heat, the number of BTUs necessary to boil the water is precisely the same. The sole difference is the time required for the water to reach boiling point. So consider the tankless water heater as the high temp and the tank water heater as the low temp. The energy efficiency comes in where tankless water heater has greater energy efficiency and only activates to heat up water as needed; a tank water heater is less economical and wastes gas by frequently heating water inside the tank to retain the set temp.

Is it necessary to fit a water softener for my tankless unit?

No. It isn’t mandatory to install a water conditioner, but if you do live in a region that has hard water, it is going to ruin the performance of your tankless water heater. Some things you should do is to add a water treatment system which inhibits scale from developing within the heater’s copper pipes, a whole house water softener system (non-reverse osmosis type), or do a regular flush routine service (frequency depends on your water solidity level). The way you will quickly notice if you have hard water is simply by either contacting your current city’s water department for the water test report, testing your water by purchasing any water hardness kit (rather inexpensive), or by looking at your water fixtures to see if you have vitamin build-up.

Is it possible to install my water heater in a manufactured/mobile home?

Sure, our Direct Vent out and Outdoor models may be fitted in a manufactured/mobile house.

different kinds of water heaters

Based upon the volume of hot water used, and the method of heating up the water (gas, oil, electrical power), there are a few options. Some types declare to cut energy expenses by half that of conventional storage designs. Their included up-front costs indicate its repayment may take a while.

Tankless Water Heater

Instead of holding water, tankless water heaters use coils to heat the water as you use it. They’re more energy-efficient when compared to a storage tank, but only supply around 3.5 gallons of hot water per minute.

They are more suited for those who generally aren’t drawing water for two separate applications at a time, like concurrently running a shower and dishwasher.

Tankless units are excellent for homes that use natural gas to warm the water; electric versions might need a costly upgrade of the home’s electrical capacity.

 Tank Water Heater

The most commonly used water heater is a tank water heater. As the name implies, water is heated and stored inside the insulated storage tank, when water is required it travels out of piping on top of the unit.

If either temperature and pressure exceed a preset level, a relief valve opens.

Gas water heaters often require less energy and are cheaper to operate (around 50%) compared to electric powered water heaters, though you should be aware that gas units are more expensive when initially purchasing.

Solar Water Heater

A cell on the roof absorbs sunlight and transfers it to an antifreeze-like solution in a closed-loop system that flows into the water tank. Best used in the summer, making them appealing for sunny, warm locations. On cloudy and chilly days prepare to see diminished savings. Most units use a backup system that activates as needed.

What you will pay to purchase and install a solar system, even if you were to include federal and regional rebates can mean waiting ten to thirty years to recover your expenses. That’s a long time.

 Condensing Water Heater

Condensing water heaters are an alternative should you want a unit using a capacity of more than 55 gallons and use gas as the source of power.

This type of water heater uses a tank for water storage, but what it does differently than traditional tank water heaters is capture exhaust gasses that will ordinarily go out the duct, which is a waste of fuel resources. The gasses blow through a coil in the bottom of the tank, where inbound cold water can transform the vast majority of heat.

Heat Pump Water Heater

Hybrid water heaters capture heat from the surrounding OH2 and transfer it to the water. Compared to conventional electrical water heaters, it uses around 60% less power. Although they are pricier than electric only units, The install is similar and payback time is brief. However, they don’t operate well in spaces that are chilly and needs a place that remains 40° to 90°.

A heat pump water heater requires up to 7 ft of space from ground to ceiling since the heat pump is on the top. You will also require approximately 1000 cubic feet of uncooled clearance space for capturing sufficient heat from the surrounding OH2 and drainage close by to release the condensate.

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