Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
tankless gas water heater question
Most tankless gas water heaters require 140,000 up to 199,000 BTU on residential models. In a lot of homes the gas line is 3/4". I believe on most jobs when totaling up all BTU needed to run all gas appliances the 3/4" line will not be big enough so if the home owner wants to have a tankless gas water heater installed they need to up grade the gas line and that is a major expense when trying to sell TGWH. Does any tankless gas water heater manufacturer have the capability of making the TGWH have priority over the gas furnace or gas boiler. When the TGWH turns on the power from the thermostat to the gas furnace or boiler would be turned off this way the original gas line in the house would be big enough to supply the TGWH and you the contractor would not have to up grade the gas line to a larger size
This discussion has been closed.
- 115.1K All Categories
- 82K THE MAIN WALL
- 2.6K A-C, Heat Pumps & Refrigeration
- 38 Biomass
- 396 Carbon Monoxide Awareness
- 2.8K Thermostats and Controls
- 1.5K Domestic Hot Water
- 4.1K Gas Heating
- 102 Geothermal
- 145 Indoor-Air Quality
- 2.5K Oil Heating
- 37 Pipe Deterioration
- 627 Plumbing
- 4.5K Radiant Heating
- 342 Solar
- 12.7K Strictly Steam
- 44 Water Quality
- 568 Buy, Sell, Barter
- 29 Industry Classes
- 62 Job Opportunities
- 11 Recall Announcements