Would This Be A Good Tankless Water Heater For Me?
Posted on | December 5, 2009 | 3 Comments
I am looking at buying a gas Thermar Tankless Whole House Water Heater with 125,000 BTU/hr. Approx 140 degrees F. It would probably be installed in my basement, to heat water on two above levels. The kitchen and half bath are on the 1st floor. There are 2 bathrooms and a laundry room on the top floor. Does anybody know about this brand? Is there something else that I should consider? Should it be installed by an electrician, or by a plumber? Should it not be installed in the basement? Will I have to make adjustments to my gas line? Any clear, concise info you can offer would be so appreciated.
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3 Responses to “Would This Be A Good Tankless Water Heater For Me?”
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December 5th, 2009 @ 5:41 am
There is more to consider than you think. What size flue do you have? 125K BTU will most likely require a 6 Inch vent. If you have a 6″ vent and a gas furnace connected to this flue, you can’t add another 125K BTU to this flue. The flue can not go through a wall, it must go out through the roof and be type “B” vent.
Also, what size gas line do you have? It might be too small to support another 125K BTU and the current load. This will need to be addressed too. Then comes combustion air to support the heater, another issue.
You will get a lot of “oh how great” on this board, but I bet none of them have ever seen a copy of the National Fuel Gas Code. You can bet your insurance company has many copies in their library. If it’s not to code and something happens, your insurance isn’t worth the envelope they send their bill in.
December 5th, 2009 @ 9:26 am
The tankless water heater will save you a lot of money on your gas bill. My friends have been installing them and I am getting ready to do the same. However ,most states will or should at least require you by law to have a gas appliance of any kind only installed by a licensed gas man or plumber. There are many safety issues when installing these or other gas appliances. You need to heed those regulations. You should not need an electriction for anything involving this water heater. I am led to understand that my friends never run out of hot water , even when the ones large family take showers and baths one after the other. Great decision. Good Luck Rock
December 5th, 2009 @ 3:23 pm
Look into Noritz tankless water heaters. That is the brand I have installed and I like their products. It is definitely a job for a plumber. The unit mounts on a wall so modification to plumbing is required. Water lines need to be routed to enter the unit on the bottom. More than likely the 1/2 inch gas line to your old water heater won’t be enough. A 3/4 inch line would need to be routed to it. A standard 120 volt outlet is required, so if there is not one near by, that would need to be added. Lastly, tankless water heaters cannot be vented in galvanized pipe to your existing flue and it cannot be common vented with other appliances. It would need to vented with stainless steel or PVC pipe, depending on the model out the side wall of your house. Hope this helps and good luck.