Rinnai Installation Diagram

    If you decide that a tankless water heater is a good idea for your home you should consider the requirements that your house will need to meet first. Tankless systems have a number of additional venting needs over your conventional tank water heater. We do more Rinnai installation than any other system so I will give the specifications for this system (although they are all quite similar).

    A 3 FT clearance is required for the following:
    1. Windows
    2. Any exhaust outlets – Furnace, dryer vent, kitchen vent etc.
    3. Gas Meter – The vent needs to be at least 3 feet from the gas meter and the pressure relief valve.

    The vent also needs to be 1 foot above grade and cannot be vented into any shared walkway that is less than 5 feet wide.

    This diagram should help explain it.

    Venting difference between a condensing and non-condensing tankless

    Now that most tankless manufactures offer a condensing and conventional tankless system more homeowner are able to transition over to an energy saving tankless.  A condensing tankless has more flexible venting options due to the extremely low exhaust gas temperatures.  In fact a condensing tankless is able to use cheaper plastic type vent materials offsetting the additional cost of the system.  A regular tankless uses stainless steel vent piping slightly increasing costs while reducing vent options. 

    It can be tricky for a homeowner to navigate their tankless venting options, which is why we offer Free in home consultations.  We can have an installer who really knows “the tricks of the trade” help you find a spot for your Rinnai Tankless water heater. And, as we all know installation can be tricky in Canada with existing gas codes and venting requirements. Get a Quote here

    Author: John

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