How much hot water do you use at once?
Think about the shower, laundry and dishwasher running at the same time. ENERGY STAR explains that tankless water-heater capacity is rated in gallons per minute, so simultaneous use matters.
Tell the installer how your household uses hot water. The proposed equipment should be evaluated for the required flow and the temperature rise from incoming water to the desired delivery temperature.
What needs to change for the installation?
A tankless gas conversion can require changes to gas supply, venting, electrical connections or drainage. These details affect which equipment can be installed and what the complete project costs.
Ask where the unit will go, how combustion gases will be vented and what access will remain for servicing. An online equipment price does not include those site-specific decisions.
How long will you wait for hot water?
Heating water on demand does not remove the water already sitting in the pipe to a distant bathroom. Ask how the proposed layout affects delivery time and whether a recirculation arrangement is being considered.
Make sure any added controls or circulation components are part of the written proposal, with an explanation of how they operate and what maintenance they need.
Would a storage tank also work for you?
Ask about maintenance requirements, warranty conditions and the full installed scope for both a tankless option and a suitable storage heater. The choice should reflect your routines and installation conditions.
RJ Sam’s can explain the available approaches across brands. You can start the conversation with the hot-water problem you want solved rather than a particular model in mind.
