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Navien NPE-180A2, 180S2  / Noritz NR98

Info

• If you are new to tankless water heaters please click here to get a 30,000 foot view of a top quality tankless system.
• The A model is very similar to the S model but it has a built-in recirculation pump and buffer tank. If you are confused click here.
• The recirculation pump and buffer tank work seamlessly to give you instant and continuous hot water without cold water interruptions.
• Overall the units operate with less maintenance and repairs.
• If you want instant hot water, no cold water interruptions and low cost of ownership this unit is for you.

Pros

• This unit is perfect for a small house with 2-3 people in the home. Sometimes this can vary depending on water usage.
• In my opinion this unit is the best unit on the market. It has the lowest call back rate and has the most features of any brand on the market.
• Over time this unit will cost you less in maintenance and repairs. Trouble free operation is a huge benefit.

Cons

• This unit is extremely expensive compared to other units without the pump or buffer tank.
• expect to spend an extra 25%-40% for this unit.
• The unit is larger than units with out the pump and buffer tank