Can a Tankless Hot Water Heater Be Installed in a Mobile Home?

Can I put an on-demand gas water heater on a mobile home? I keep running out of hot water too soon. -Norman

Hi Norman,

A tankless hot water heater can be installed on a trailer or manufactured home as long as you have a large enough gas line to supply it, or the properly rated electrical cable and breaker in the case of an electric model.

On gas models, make sure you choose one configured for your gas supply, since many manufactured or mobile homes use propane rather than natural gas. All the major tankless water heater manufacturers carry models for both propane and natural gas.

Rinnai, Rheem, Takagi, and Bosch are all good brands to consider.

Good luck with your project,


Further Information


  1. My uncle recently moved to a small town in Colorado, and he is staying in a mobile home. He was wanting to install a tank-less water heater, but after reading this, I can see he needs to be careful. I will tell him to read this.

  2. There are takless hot water heaters made specificly for mobile homes. I don’t know what the difference is to be truthfull. But I do know for insurance purposes you. Must install the proper unit in a mobile home.

  3. I wanted to install a Tagaki tankless hot water heater in my manufactured home and decided to call Tagaki directly. I was told that their units no longer carries the certification for manufactured homes. which means that the warranty will be voided if installed in a manufacured home. So my search continues.

  4. We’re have a double wide trailer and are considering installing a Richmond tankless gas water heater. Do you know if these are rated for mobile homes?

  5. I am looking at installing a propane tank-less hot water heater in a
    mobile home. there is an outside alcove with a door.
    The unit is listed as and outside mobile home unit. And the new propane tank company will installed and will have a propane line to handle the needed propane demand. Does this all sound correct?

    • Hi, Glenda,
      So far, it sounds like you’ve taken the steps necessary for this installation.
      Having a propane professional involved is ideal, because they’ll serve as ‘boots on the ground’ to ensure, in person, that the installation meets industry standards.
      Good luck!

  6. I suspect that 3/4″ in NG supply would be sufficient for tankless heater under 10 gpm flowrate. Experienced experts invited to comment… Mobile home…

  7. you all dont turn those tankless hot water tanks into rocket science. I put one in my garage and it works fine, and I am fixing to put one in my mobile home and there is no doubt in my mind that it will work. The biggest issue you are going to have is the electric going to it. always tweet your flow rate and all I am is a person that likes saving money. P.S. the honest truth is I may never see this again, but I do hope I have helped someone. Love you Dennis


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