Storage Hot water Tank vs Tankless Water Heater

Tankless Water Heater vs Tank – Which is Better?

Tankless Water Heater vs Tank – Which is Better?

Storage Hot water Tank vs Tankless Water Heater

Water heaters are an essential piece of equipment that you rely on to supply you with constant hot water.  As a result, when choosing the right system for your home or replacing your existing water heater, it is essential to evaluate its cost, efficiency, and lifespan. Below, we’ve compiled this article comparing tankless water heater vs tank. This will help homeowners decide which system is best for them. Whether it’s tankless or tank water heaters, you now have the information.

How does a tank water heater work?

storage water heater

A tank water heater has a tank that retains the hot water and operates on a warm-rise concept. They are designed in many different shapes and sizes, with most of them using an electric element or a gas burner to heat the water. In any case, their operation is to allow cold water to enter the tank from the main supply which then gets heated based on set temperature. Therefore, whenever you have a demand, the hot water will rise to the top of the tank and flows into your sink, shower, or bathtub as needed.

How does a tankless water heater work?

how does Tankless water heater work

A tankless water heater does not have a tank water heater. Instead, it heats the water as needed. Most tankless water heaters typically use gas or electricity and have a unique heat exchanger to heat incoming cold water. They operate when you turn on the hot water taps, activating the internal system, which immediately heats the water. The heated water is routed through your pipes to the faucet or showerhead at the desired temperature.

Tankless Water Heater Pros and Cons


  • Efficiency — no need for the burners to maintain the tank’s entire gallons of hot water.
  • Longer life expectancy.
  • Saving on space.
  • Tankless heaters usually come with more extended warranties.


  • Initially, more expensive equipment and installation costs.
  • You may need to make minor adjustments to your home to accommodate a tankless unit.
  • They are required to be maintained yearly.


Tank Water Heater Pros and Cons


  • Lower initial costs.
  • Simple setup.
  • A system that has been used for many years to provide hot water to homeowners.
  • In an emergency, you have a tank full of hot water to be supplied.
  • You can frequently install an electric tank water heater without significantly altering your home’s electrical system or purchasing pricey additional equipment.


  • Energy is wasted to maintain a full tank of hot water.
  • Life expectancy is lower than the tankless system’s.
  • Gallons of water could leak or escape from the tank if the heater fails.
  • You must wait for extra hot water if you empty the tank.


Tankless Water Heater vs Tank

comparison between Tankless water heater vs Storage Water Heater

When deciding between a tankless and a tank hot water heater, many factors must be considered.

The life expectancy of Tankless Water Heater vs Tank: Tank water heaters usually last 10-15 years, while a Tankless water heater can last 20 years or more if properly maintained.

Tankless water heater vs tank cost: When comparing water heater costs, you must consider upfront installation costs and possible energy savings. Tank water heaters are usually less expensive than tankless water heaters. In addition, when comparing tankless  vs tank, Consumer Reports discovered that installation of gas-fired tankless heaters costs $4500-$8500, while standard storage tank types cost $1100-$3500. Furthermore, due to the necessity for electrical outlets, improved gas lines, and a new ventilation system, tankless gas versions had higher installation costs, according to the survey.

Potential energy consumption of tankless water heater vs tank: When comparing water heaters, it’s crucial to remember that storage tanks have some standby heat loss. (water cools as it sits in the storage tank until needed). It requires heating regularly, even when not in use. On the other hand, tankless heaters do not require this additional energy cost because water is heated when needed. describes the expected energy savings with tankless water heaters as follows:

  • For families that utilize 41 gallons or less of hot water daily, tankless heaters can be 24-34% more energy-efficient than traditional water heaters.
  • Tankless heaters can save 8-14% more energy than traditional heaters for households that consume about 86 gallons of water daily.
  • According to, installing a tankless heater at each hot water outlet can boost tankless water heater energy savings by up to 27-50%.
  • ENERGY STAR estimates that utilizing an ENERGY STAR-certified tankless water heater can save a typical family at least $100 per year in tankless water heater energy savings.

Long-term costs: The cost decreases connected with tankless heaters will vary depending on the circumstances, but the reduced energy demand will result in considerably lower utility bills. According to the DOE, tankless heaters have a longer life expectancy than shot water  tank heater, with more than 20 years compared to 10-15 years for hot water  tank heater.

Convenience: If you’re dealing with an emergency replacement of a failing water heater – according to an Energy Efficiency survey, 37% of residents replacing a heater did so due to sudden failure – But keeping the same heater model could speed up the process.

Speed of hot water delivery: Tankless heaters typically take about 15 seconds to heat water, whereas a fully heated tank can deliver hot water instantly – remember that hot water will need time to travel through the pipes from the heater to the faucet in either case. Some tankless heaters include built-in recirculation pumps, allowing them to provide hot water immediately.

Tankless heaters have a smaller installation footprint than hot water  tank heater. Compared to hot water  tank heater, full-facility tankless heaters often fit against a wall and are less than 2 feet wide and 3 feet high. Under sink electric tankless variants are considerably more compact and can deliver hot water to more confined places, such as an eye and face wash station.

Emergency availability: A power loss will likely leave tankless heater users without hot water. Even tankless gas heaters require an electronic control panel.


Which is Right for You in the Long-Run?

Now that you understand the differences between tankless water heater vs tank, which is best for you in the long run? A tank water heater may be your best option if you need an immediate installation with little to no upkeep. However, consider a tankless heater to save you money on energy costs while still having a longer-lasting water heater.

While tankless water heaters have a higher upfront cost, their energy efficiency frequently makes up for it in the long term. If you need help deciding which is best for you, consult our specialist before making a final decision.

Hot Water Heater Installers, Repair, Install & Replacement in Vancouver

There are numerous aspects to consider when determining when to replace your water heater, and Knowledge HVAC and Refrigeration Ltd specialists are here to help. Our water heater installers in Vancouver have several years of experience replacing and installing water heaters. Customers may relax knowing that our team of experts will do the task correctly.

Knowledge HVAC & Refrigeration can handle all of your hot water needs. We install gas, electric and high-efficiency tankless water heaters for customers around Vancouver. Call us today at +1-778-522-5669 to speak with one of our Vancouver hot water heater installer.

Schedule a hot water heater maintenance to check your existing water heating system before problems emerge. This is to avoid the extra costs and fewer further repairs. We are available to assist with any of your needs. Contact us by phone.