You indeed have seen many small boxes attached to the modern bathrooms, and kitchens to use for warm water. If you are not fully aware of these, let me tell you – these are tankless water heaters.
Let’s consider it in a bit more detail to help you find the best hot water heater, the criterion for selecting the appropriate model for your home.
What is a Tankless Water Heater?
Tankless water heaters provide hot water instantaneously when it is needed. It is also known as a demand-type heater owing to its optimized working. As the name indicates, tankless water heaters don’t have a storage tank, making them compact and space-saving options for all types of buildings.
The tankless water heaters can ensure the provision of 2-6 gallons of hot water in one minute. It is much more quantity than the traditional tank heaters. Therefore, the families requiring more hot water frequently should consider getting the advanced water heaters – tankless water heater is a perfect choice for them.
If you suffer from traditional heaters’ maintenance and bills, it is the right time to get the best whole house electric tankless water heater.
What is a Tankless Water Heater?
There is no storage tank attached to the instant water heaters. Owing to this, the heaters are usually known as the tankless water heaters. The heaters work in a simple methodology.
The working methodology is simple in tankless water heaters. When the hot water tap is turned on, the water passes through the heater and instantly get hot before delivery. This type of heaters is available in electric and gas heating systems.
Resultantly, the heater provides constant water supply until the tap is on. Once, you turned off the tap; the water supply is disconnected. The heaters are used for different tasks and activities such as filling the shower tub, kitchen dishwashing, and other household work.
Benefits of a tankless water heater
Everything comes with some added-value benefits and some limitations. Let’s have a look at the plus points of buying tankless water heaters.
- Instant water heaters use less power energy for heating the water because it supplies hot water only when needed. So, energy consumption is 20-40% less compared to the traditional water heating systems.
- On-demand water heaters work only when the faucet is turned on. It means that you don’t need to keep it on all the time.
- The tankless water heaters use natural gas or propane, which means that heating expenses are incredibly low.
- The best thing about tankless water heaters is that you don’t need to store 5-6 gallon water into the tank. So, the consumption of water is as per the requirements.
What is the downside of a tankless water heater?
It is imperative to have complete knowledge about tankless water heater pros and cons to make a wise buying decision. So, a list of limitations or downsides of instant heaters is given for your information:
Firstly, many people shun the idea of buying a tankless water heater owing to high upfront price and installation cost. However, it is not a downside but an initial investment because you don’t have to pay much for maintenance and operating charges.
Secondly, sometimes the users may have to experience the cold water sandwich while using the tankless water heater. It means that you are getting hot water regularly and then for a moment comes the chilled water leading to hot water again. It works in a cycle. So, the best way is to collect the water in a tub and then use it.
What size is the tankless water heater for the house suitable?
One of the most frequently asked questions is “how do i know what size tankless water heater i need”. Undoubtedly, it is important to understand the size of the instant water heater because it has no storage tank and can fulfil your family members’ hot water requirements.
So, if you want to get an on-demand water heater for your home, you should consider the following questions for must:
- What size tankless water heater for the house or size of your home?
- What is the flow rate of the water from the heater?
- What are the minimum and maximum temperature ratio?
A careful analysis of the requirements and assessment of the answers can help you figure out the best on-demand heater. But, if you are still struggling with the questions “what size of tankless water heater do I need”. Let’s understand it with an example:
If you are using 2 showers simultaneously, you probably need around 6 gallons of warm water at every minute. In this situation, you need a tankless water heater to provide 7-8 gallon water per minute to be on the safe side.
It is suggested that you buy a 2.5 gpm for bathroom shower and 1.0 gpm in the next shower point to get the required amount of water at the same time.
Water tank size for 4 bedroom house
Many people are concerned about the availability of hot water based on the rooms in a house. It is imperative to understand that the size of the tankless water heater depends on the number of the bedroom and the bathroom in the house.
It merely means that you need to calculate the hot water requirements after considering the usage in the bathrooms, kitchen and laundry area. So, here is the challenging task of calculating it.
What size water heater do i need a calculator?
Indeed, you would be thinking about the calculations for water requirement estimates and the instant water heater size. Typically, the water heaters have a first-hour rating (FHR), which provides water usability details. You can ask the tankless water heater providers to estimate the number of gallons from the FHR to estimate the hot water availability.
If you are buying the best tankless hot water heater, you should check the product description for getting a better idea of warm water supply. It is because every product has a specific limit of warming the water and supplying it.
Water heater size for a family of 4
Sometimes, it is imperative to understand the use of warm water based on the numbers of family members. Consider the given below detail for this:
- 1-2 persons require 25-35 gallons of heated water
- 2-3 persons require 30-45 gallons of heated water
- 3-4 persons require 45-55 gallons of heated water
- 5 or more people need 60-85 gallons of heated water
You can now check the requirements based on per person warm water usage and decide to buy a tankless water heater accordingly. Essentially, the best tankless water heater for the large family should provide 85-100 gallons of water. It is because no one wants to get a shower in chilled water, especially during winters.
How much electricity does a tankless water heater use?
The electric tankless water heaters usually need 120 AMPS to heat the water. On average, it takes 200 AMPS. In this way, electricity usage is not too much, and you can save money by getting a natural gas tankless water heater. The total cost will not exceed more than $1000.
Many people don’t opt for instant water heaters as they consider it an expensive product. Although the initial investment for buying a tankless heaters seems high compared to the conventional water heaters, its maintenance cost is minimal to zero.
It is because on-demand water heaters work perfectly well in the long run without any disturbance. The average expectancy of tankless water heater is around 15 years. The operating cost is relatively low. Besides, instant water heaters are energy efficient.
On the other hand, the traditional water heaters require regular maintenance and their operating cost is considerably high. The conventional water heating systems have a limited life expectancy of 5 to 10 years which is nothing compared to tankless water heating products.
Take away: is it worth getting a tankless water heater?
Summing up, tankless water heaters offer ultimate benefits over the tank-styled water heaters. It is because on-demand water heaters are efficient in terms of money and water consumption. You can pay the price for installation, and there are near-zero charges for maintenance. So, get it once and enjoy warm water for many years. In this way, tankless water heaters worth your money for offering an interruption-free supply of warm water every day!