Free residential service call with any repair during normal business hours

CSI Mechanical

   (704) 600-6267

Serving Shelby, NC Metro Since 2010



  • Technical Specifications


    Home Size

    Southern climate: 3-3.5 baths
    Northern climate: 2 baths

    Indoor Unit Dimensions

    24.2” (H) x 18.3” (W) x 9.4” (D)


    58 lbs.

    Gas Consumption

    Min: 16,000 btuh
    Max: 180,000 btuh

    (NG & LP)

    Natural Gas/Propane

    Capacity Range

    0.5 – 9.8 GPM

    Uniform Energy Factor

    0.91 (NG) | 0.92 (LP)

    Temperature Settings

    100-140°F (In 5°F intervals) (9 Options)

  • Models and Accessories

    Model Number and Description

    Model (Natural Gas)

    GQ-C2857WS-FF US NG

    Model (Liquid Propane)

    GQ-C2857WS-FF US LP



The ENERGY STAR rated NRC98, Noritz’s brand new ultra-high efficient condensing model, demonstrates its ongoing commitment to the green movement by expanding its newest tankless water heater product line: the ecoTOUGH Series of high efficiency, easy-to-install, gas-fired condensing tankless water heaters.

Offering a maximum input of 180,000 BTU per hour, the NRC98 Tankless Water Heater is designed to fully meet the domestic hot water needs of northern residences with two bathrooms and sourthern homes with three baths.

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