As an Amazon Associate, we earn from qualifying purchases. 21 kW Indoor Electric Tankless Water Heater Niagara Industries . N-210 Gallery Attributes Brand name, Manufacturer name, ManufacturerNiagara Industries Attribute0099.50 % Attribute0188 Attribute02ANSI 372 Attribute03Residential Attribute04Titan? SCR4 Attribute053 in Attribute06, Attribute12Yes Attribute07No Attribute085 gpm Attribute09, Attribute2410-1/2 in Attribute10Indoor Attribute11NSF 372 Attribute133 Attribute14Domestic Attribute15Single Phase Attribute16Electric Attribute17150 psi Attribute183/4 in Attribute19Up to 120 Deg F Attribute20UL 499 Attribute21, Voltage240V Attribute2221 kW Attribute2312 lb AttributeKey00AFUE AttributeKey01AMP AttributeKey02ANSI AttributeKey03Application AttributeKey04Collection AttributeKey05, length_AttribDepth AttributeKey06ETL Listed AttributeKey07Energy Star Compliant AttributeKey08Flow Rate AttributeKey09, height_AttribHeight AttributeKey10Indoor Outdoor AttributeKey11NSF AttributeKey12NSF Certified AttributeKey13Number of Elements AttributeKey14Origin AttributeKey15Phase AttributeKey16Power Source AttributeKey17Pressure - Maximum AttributeKey18Supply Pipe Connection Size AttributeKey19Temperature Range AttributeKey20UL Listed AttributeKey21Volts AttributeKey22Watts AttributeKey23, Weight_AttribWeight AttributeKey24, width_AttribWidth CategoryL1Water Heaters CategoryL2Tankless Water Heaters DimensionUnitinch Extra Product Name21 kW Indoor Electric Tankless Water Heater Weight12 WeightUnitlbs depth, length3.0 height, width10.5 moq, multiple, tierMinQty11 MPNN-210 qtyInStockNot available SKU3660183 snippetShop for 21 kW Indoor Electric Tankless Water Heater from Niagara Industries At Ferguson. Ferguson is the #1 US plumbing supply company and a top distributor of HVAC parts, waterworks supplies, and MRO products. tierPrice1829.15 Distributor offers SellerSKUMOQIn stockMultiplePrices ferguson.com36601831Not available11 @ $829.15