- 1 How many BTU tankless water heater do I need?
- 2 How do you calculate Rinnai flow rate?
- 3 What is the downside of a tankless water heater?
- 4 Can a tankless water heater work for the whole house?
- 5 Can a tankless water heater fill a tub?
- 6 Is it worth switching to a tankless water heater?
- 7 How often should a tankless water heater be flushed?
- 8 How long does a tankless water heater last?
- 9 How many gallons per minute should my tankless water heater be?
- 10 How much should a tankless water heater cost installed?
- 11 How do you size a Rinnai heater?
- 12 Can you oversize a tankless hot water heater?
- 13 What is the best brand for tankless water heaters?
How many BTU tankless water heater do I need?
If you currently have a gas tank water heater (natural gas or propane), you can install a gas tankless water heater. However, you will probably have to upsize the gas line coming from your meter to your heater, as tankless units typically require a dedicated line to service their high demands of up to 200,000 BTU.
How do you calculate Rinnai flow rate?
To calculate the flow rate, consider how many outlets might possibly be used at once. Calculate the rough flow rate through each outlet for the total flow. The result is roughly what you will use in litres per minute (L/min) at peak demand times in your facility.
What is the downside of a tankless water heater?
The primary disadvantage of on demand or instant hot water heaters is the upfront cost. The smaller units that you often see won’t produce enough hot water to serve most households. They’ll only serve one faucet at a time—a problem if you want to shower while the dishwasher is running.
Can a tankless water heater work for the whole house?
A whole-house tankless water heater is built to provide continuous hot water whenever you need it. Both tank and tankless whole-house water heaters have their advantages. Tank-type water heaters have a lower upfront cost and are often easier to install when replacing a similar type tank water heater.
Can a tankless water heater fill a tub?
Please remember that tankless water heaters also come in different sizes, and you need to get a unit that will deliver a strong flow to the tub. A small tankless water heater can take a long time to fill a large tub. Whatever way you choose, at least now you’ll finally be able to relax in a nice, hot whirlpool tub.
Is it worth switching to a tankless water heater?
The big advantage of tankless water heaters is that they use less energy since they only heat up water when you need it. You can save hundreds on your energy bill each year. Because they don’t waste power, you can also enjoy the fact that your home will be more sustainable and eco-friendly.
How often should a tankless water heater be flushed?
Keeping up with maintenance, including tankless water heater cleaning, should take place at least once a year. You may need to take care of other tasks, such as wiping down the exterior of the unit, more often, especially if the area where you install the water heater receives a lot of dust.
How long does a tankless water heater last?
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.
How many gallons per minute should my tankless water heater be?
The best sizing factor for a tankless water heater is its flow per minute rate. A 3.2 gpm, tankless heater can heat 3.2 gallons of water per minute, which is roughly enough to provide hot water to a shower and a sink. To find the correct capacity, add up all of the fixtures that you expect to use at the same time.
How much should a tankless water heater cost installed?
The gas tankless water heater installation cost would be in the $1200 to $3000 range if switching from electric to gas. You do save about $250 because you do not need a tempering valve installed with a gas tankless water heater installation.
How do you size a Rinnai heater?
Multiply the square footage by the BTU per square foot to arrive at the total BTU rating you’ll need from your Rinnai heater. All Rinnai heaters are rated for a particular number of BTU, ranging from 8,000 up to 40,000 or more, giving you a lot of flexibility in the model you can buy.
Can you oversize a tankless hot water heater?
As suggested when selecting a tank-type heater, you don’t want to buy an oversized or undersized tankless water heater, as it will result in unnecessary issues such as the rising upfront price, operating costs and wasted water and energy – affecting your budget and time.
What is the best brand for tankless water heaters?
Best tankless water heaters
- Best overall: Rinnai RUR160iN Water Heater. Courtesy of Amazon.
- Editor’s pick: Rinnai RU130iN. Courtesy of Amazon.
- Best for low prices: EcoSmart Eco 18 Electric Tankless Water Heater. Courtesy of Amazon.
- Best electric tankless water heater: Rheem RTEX-24.
- Best point-of-use heater: Bosch Tronic 3000.