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Tank or Tankless Water Heater for your ADU. How To Choose?



Choosing the Right Water Heater for your home.

Most ADU will be no larger than 1200 square feet so does that mean we can use a tankless water heater? Since we won’t be drawing water for a full house can we opt in for this efficient technology? Let’s go over all the facts so we can make the right decision.

Traditionally most houses have tank water heaters. The price for these types runs $1,000-$1,500 without installation. These tank heaters serve great purposes in providing adequate heating for the house for many years to come. They usually last 10-15 years. Electric heaters are more efficient but will cost more to operate as compared to gas-powered heaters. Electric heaters will cost lower upfront, but your monthly electric bill will cost you more in the long run.

Tankless electric heaters do cost more compared to the traditional heater but are much more efficient in heating. It will send hot water to your line much quicker than having to heat up a traditional tank.

A Tankless heater will save you money over time because it is 35% more energy efficient and will last longer. These heaters will last 20 years or longer and they will cost around $2,000. They don’t require lots of space, so this is perfect to add to your ADU without having to take up much square footage. The only downside with a tankless heater is that if two showers are turned on including the laundry washing machine then you will endure the cold shower experience.

If your budget allows a higher initial cost, then tankless water heaters will be the best option. It is space-saving, highly energy efficient, and will send hot water to your line within seconds. The installation cost isn’t as much as compared to a traditional tank, gas, or any other type of setup.



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