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  1. #1
    Join Date
    Mar 2014
    Posts
    1

    Default all in one Rinnai hotter boiler and on demand hot water

    We can get a no interest loan to upgrade to natural gas with a Rinnai 96% efficient boiler and on demand hot water maker. Is this a good system? Right now we have an old oil furnace with no hot water heater, it comes off the furnace.

  2. #2
    Join Date
    May 2013
    Location
    Minneapolis
    Posts
    9

    Default Re: all in one Rinnai hotter boiler and on demand hot water

    You have to do the math. Oil to natural gas is usually a good move saving money on fuel. If you have an oil boiler with a tank-less coil you would benefit from nearly any replacement be it indirect water heater, combi like the Rinnai, Viessmann 222F , Triangle Tube Excellence, or one of our favorites the Bosch Greenstar combi boiler.

    But first, start with an ACCA manual 'J' heat load to size the space heating side of the system and then consider if the DHW side will work for you. This is generally work for an experienced professional.

    More often we size a condensing boiler for the space heating load and then install an indirect storage water heater to cover the DHW.

    It is all about the contractor since sizing, installation and maintenance are critical for comfort, economy and reliability. Rinnai may be the thing for you, but if you can't find local support there are a dozen condensing boilers to choose from. Choose the contractor and then the boiler.
    Badger Radiant Designs

  3. #3
    Join Date
    Jul 2009
    Posts
    163

    Default Re: all in one Rinnai hotter boiler and on demand hot water

    Quote Originally Posted by BadgerBoilerMN View Post
    You have to do the math. Oil to natural gas is usually a good move saving money on fuel. If you have an oil boiler with a tank-less coil you would benefit from nearly any replacement be it indirect water heater, combi like the Rinnai, Viessmann 222F , Triangle Tube Excellence, or one of our favorites the Bosch Greenstar combi boiler.

    But first, start with an ACCA manual 'J' heat load to size the space heating side of the system and then consider if the DHW side will work for you. This is generally work for an experienced professional.

    More often we size a condensing boiler for the space heating load and then install an indirect storage water heater to cover the DHW.

    It is all about the contractor since sizing, installation and maintenance are critical for comfort, economy and reliability. Rinnai may be the thing for you, but if you can't find local support there are a dozen condensing boilers to choose from. Choose the contractor and then the boiler.



    Well written, Badger, thanks.

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