Rinnai Tankless Water Heater Total Cost Of Ownership – Level Of Maintenance Required?

Posted on | November 20, 2009 | 3 Comments

I just had an installer do a site survey of my home to get a quote for installation of a Rinnai tankless natural gas water heater. They said that Rinnai requires more maintenance than a tank water heater and can have small filters get blocked. They suggested I subscribe to a routine maintenance program. Has anyone have any experience with blockages of a Rinnai, and if so how frequently?

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3 Responses to “Rinnai Tankless Water Heater Total Cost Of Ownership – Level Of Maintenance Required?”

math
November 20th, 2009 @ 9:16 pm

The installer is trying to make some extra money. Contact Rinnai through their website and ask for the reasons. I am not a fan of tankless heaters because they are more prone to blockages due to small tubing running through them. This, plus the initial cost and trying to find someone to do any maintenance (without a contract). Many Plumbers will install them, but do not provide service since they are “state of the art” and training is necessary.
rhsaunde
November 20th, 2009 @ 6:54 pm

I am not a fan of tankless water heaters. It could be that the flow rate could exceed the heating capacity of the device if several uses of hot water were active at the same time. Calculation, using the rated BTU input of the heater, will show how much water can be drawn before the flow rate exceeds the heater’s capacity.
Gudy
November 20th, 2009 @ 8:07 pm

if your on a well or have galvanized pipes you should install a filter or y-strainer before the unit. its still a good idea even if you have copper because any time the water is shut off it tends to stir debris from the walls of your pipes

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