I get asked my opinion on what I would suggest for a water heater, Tank or Tankless.
In this blog entry I will evaluate this often asked question.
A 40 gallon water heater typically has a 40,000 btu output. A tankless water heater to replace a 30 or 40 gallon water heater has 199,000 btu output. This means you need to upsize your gas line to 1" or 1 1/4" for an inside install or install an exterior tankless right next to your gas meter and run a very short 3/4" gas line. I'll just say right now that I would only recommend a tankless if it is installed outside next to the gas meter. This method of installation results in zero venting costs and more space for the inside.
My #1 recommendation is to go with a 40 gallon tank water heater. 40 gallon is a more popular size, so the cost difference is not that much more than the 30 gallon. We import 90% or more of our water in San Diego, and the conveyance system crosses over 2 fault lines. If we had a serious earthquake and our water lines broke, you would then also have 40 gallons of stored drinking water instead of just 30 gallons.
Water is the deal here in San Diego. My customers often tell me they will put buckets under their faucets to catch the cold water coming out of the hot water line until hot water finally comes. (I don't like this because slip, trip and falls are a serious risk in a bathroom and water is 8 lbs a gallon)
Contrary to popular belief, a tankless water heater saves gas, not water. Tankless water heaters are noisy, so if outside next to the bedroom or kitchen window, you will likely be annoyed or distracted. Tankless water heaters do not produce instant hot water. You will have an average of 45 seconds of cold water coming out of your hot line, which is the same for a tank water heater. However, a recirculation pump will improve your hot water time with a tank water heater.
I hope this blog helps anyone who is looking for information on which type of water heater is best for their particular needs!
Lisa
Olive Branch G
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3 comments:
Hi friends,
Tankless water heaters heat water directly without the use of a storage tank. A tankless water heater can provide endless hot water for your showers or baths. It delivers a constant supply of hot water. You don't need to wait for a storage tank to fill up with enough hot water. Thank you...
36 Inch Gas Cooktop
There's a big debate whether a tankless water heater is better than with a tank. The most discussed points are: How many people will be using the hot water? Do you mind having a water tank under your basement or out on your backyard? These are some of the questions that you need to consider in buying your water heater. Tankless water heaters cost more than a conventional storage water heater, but has a longer life expectancy.
Elia Lester
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