Review AO Smith ATI-540H-N Condensing Residential/Light Commercial Tankless Heater

AO Smith ATI-540H-N Condensing Residential/Light Commercial Tankless Heater

AO Smith ATI-520H-N Tankless Heater Condensing Residential/Light Commercial Nat Gas Indoor Minimum 13,000 Btu Input Maximum 199,000 Btu Input Maximum GPM 9.0.

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AO Smith ATI-540H-N Condensing Residential/Light Commercial Tankless Heater Features

• Air-Fuel ratio (AFR) sensor
• Exhaust and water temperature safety control
• Overheat cutoff fuse
• 4" pipe vents up to 50 equivalent feet or 3" pipe vents up to 25 equivalent feet

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AO Smith ATI-540H-N Condensing Residential/Light Commercial Tankless Heater

Customers say's :
A bit expensive but worth the money

The install was fairly easy, just some minor plumbing to move the existing water lines to accommodate the tankless water heater. PVC ducting made exhausting very easy and the gasket built into the stainless collars fits snugly over a 3" PVC coupler. I was worried about the exhaust fan noise because I had done some research on other tankless water heaters and some said this was a problem but I could barely tell it was on other than a low frequency hum. I replaced a working water heater with the tankless because am finishing my basement and would lose the opportunity to do this in the future so I bit the bullet and haven't run out of hot water since.

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