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Harmonic Heating & Air Conditioning is here to take care of all your comfort system maintenance, repair and installation needs! Call us when you need comfort services!

Harmonic Heating & Air Conditioningstarstarstarstarstar4.9 / 5

249 Total Reviews /files//harmonic-logo-footer.png630-999-9008$10S187 Schoger Dr Suite #54, Naperville IL

Select Atmospheric Vent Gas Water Heater

The Select® Series gas water heater is designed to deliver an economical performance that can lower your energy bills and also provide long-lasting value.

  • Intelligent Control Logic The internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response to optimize performance.
  • Self Cleaning Dip Tube Helps reduce lime and sediment buildup and maximizes hot water output. Made from long-lasting PEX cross-linked polymer.
  • Coregard Anode Rod Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods.
  • Push Button Piezo Ignitor
  • Heat Trap Nipples
  • Blue Diamond Glass Coating
  • Green Choice Gas Burner Patented exo-friendly burner design reduces NOx emissions by up to 33% and complies with Low-NOx emission requirements.
MODELTypeCap. GallonsInput MBtuHUEFGas TypeRecovery GPH1st Hr Rating GPHDimensions HxWxDWeight Lbs.
GS630 ORBT 30 35.5 0.63 NG / LP 36.0 64.0 61.75x16x16 123
GS630 OCT 30 35.5 0.63 NG/LP 36.0 62.0 61.75x18x18 132
GS640 OCT 40 35.5 0.62 NG/LP 36.0 67.0 62x20x20 138
GS640 BRBT 40 40.0 0.62 NG/LP 41.0 70.0 62x18x18 130
GS640 BCT 40 40.0 0.62 NG/LP 41.0 70.0 58.24x20x20 138
GS650 BRT 50 40.0 0.60 NG/LP 41.0 88.0 60.75x21x21 148
GS650 BCT 50 40.0 0.62 NG/LP 41.0 88.0 60.75x22x22 165
GS650 RCT 50 50.0 0.60 NG/LP 58.0 92.0 60.75x22x22 165
GS650 XCT 50 60.0 0.60 NG/LP 61.0 98.0 65.5x22x22 190
GS630 ORBS 30 35.5 0.63 NG/LP 36.0 56.0 50x18x18 110
GS630 DCS 30 35.5 0.63 NG/LP 36.0 56.0 50x18x18 118
GS640 BRBS 40 40.0 0.62 NG/LP 41.0 67.0 51.5x20x20 134
GS640 BCS 40 40.0 0.62 NG/LP 41.0 68.0 51.5x22x22 135
GS650 BCS 50 40.0 0.00 NG/LP 41.0 93.0 53x24x24 177

Warranty Information

  • All Parts for 72 months - 6 Year Parts and Tank Warranty

Available Documents

State Tank Water Heater Standard Warranty

All models include 6 year limited parts and labor warranty.
Additional service and maintenance can be covered by our VIP or Total Rock*Star Plans.


We customize your comfort by making your home smarter, healthier and more efficient. Your peace of mind is as important to us as your comfort.

That's why every product us backed by warranties as robust and dependable as the products themselves.

Every piece of heating & cooling equipment is eligible for a 12-Year Parts Warranty, when you join the "Rock*Star Maintenance Program".

All other products are eligible for the 12-Year Parts Warranty.

Ask for details, terms, and conditions. All product warranties are registered by Harmonic within 30 days of purchase.

on all equipment repairs, indoor air quality & comfort items

Including humidifiers, air filters, air cleaners, thermostats and more! 12 year parts and labor warranty requires joining Rock*Star Maintenance Program. Ask for details, terms, and conditions.

The "Exclusive 12-year Parts & Labor Warranty" covers parts and labor cost from the time of purchase. "Exclusive 12-year Parts & Labor Warranty" requires annual maintenance to be performed by Harmonic Heating & Air Conditioning beginning immediately from the time of purchase. Maintenance must be performed annually during the initial 12-year coverage term in order to uphold warranty status. If annual maintenance is missed or not performed by Harmonic Heating & Air Conditioning, the "Exclusive 12-year Parts & Labor Warranty" becomes void immediately. Warranty coverage defaults to a 10 year part warranty and a 2 year labor warranty from the time of purchase. Warranty is registered to the purchaser and is not transferable.


when you purchase a Furnace or Air Conditioner from Harmonic!