Whether it’s commercial or residential domestic hot water, the Eternal is the right solution. Its triple pass design provides endless hot water with up to 98% efficiency, and comes with a 15 year residential / 5 year commercial no leak warranty.
For larger commercial jobs, Eternal water heaters have the ability to be common vented in parallel up to 4 units, and utilize a multi-controller unit to sync up to 8 units.*
*Feature limited to Eternal GU195M models.
Eternal is compatible with most recirculation systems, whether it’s a dedicated return line or under-the-sink retrofit pump. The built-in reserve tank within the heat exchanger makes instant hot water possible. Optional feature. Consult your authorized Eternal dealer.
| Model | GU195M* | |
| Thermal Efficiency / Energy Factor | 98% NG / 99% LP / 0.96 Energy Factor | |
| Installation | Indoor / Outdoor / Wall Mount / Floor Standing | |
| Flue System | Sealed Cobustion Direct Vent / Power Vent Convertible | |
| Vent Run | 3” PVC | Up to 100ft, 6 Elbows Max, 5ft Deduction Per Elbow |
| Condensate Discharge | Low / Med / High Fire | 0.5GPH / 1.1GPH / 1.75GPH |
| Condensate pH Level | 4 pH | |
| Gas Type | Pre-set for NG / LP Conversion Kit Included | |
| Unit Connections | Gas & Water | 3/4” Female NPT |
| Electricity | Dedicated 120VAC, 60Hz w/3 Pronged Power Cord | |
| Gas Input Rate | Min / Max | 26,000 BTU/Hr / 195,000BTU/Hr |
| Gas Supply Pressure | NG / LP | 3.5”WC to 10.5”WC / 8”WC to 14”WC |
| Ignition System | Direct Electronic Ignition w/Automatic Flame Sensing | |
| Burner System | Single Orifice Premixed Fuel Injection Metal Fiber Infrared | |
| Gas Valve System | Dual Stage Negative Pressure Full Modulation Air Ratio | |
| Internal Piping Material | 316L SS | |
| Reserve Tank | Under 2 Gallons | |
| Electrical Consumption | Standby 8w, Maximum 85w | |
| Maximum Noise Level | 50dB (a) | |
| Remot Controller | Up to 3 Kits | |
| Multi Control Unit (MCU) | Up to 2 units in manifold, No built-in MCU | |
| GPM Capacity Range | 0.1 to 19.5 GPM | |
| Temperature Sensing | Tank, Cold Inlet, Hot Outlet, Air Inlet Thermistors | |
| Temperature Control | Simulation Feed Forward and Feed Back w/ Electronically Controlled Mixing Valve | |
| Flow Sensing | Dual Flow Sensors w/Built-in GPM Monitor | |
| Temperature Settings Range | 100°F to 180°F ( 5°F interval/ 9 steps), Factory default : 140°F | |
| Unit Dimensions (WxHxD) | 16.9” x 29.1” x 13.8” | |
| Unit Weight | 90lbs / M Option - 91.5lbs | |
| Safety Devices | T&P Valve, Flame Rod, Thermal Fuse (306°F), Remaining Flame Detection, Fan RPM Check, Freeze Protection (-40°F), Vent Blockage Detection, Thermostat Switches (167°F / 194°F), Gas Valve Current Leak Detection, Ignition Prevention, Dipswitch Temperature Lock, GFCI w/2 x 5A Fuses. | |
| Accessories | Outdoor Vent Cap Assembly, 3” Horizontal Terminator, Concentric Venting Kit, Condensate Neutralizer Kit, Water Heater Stand | |
| *GU195M for single or dual unit applications with no multi control unit. The GU195M is for multiple unit applications only and cannot be used for single unit applications. | ||
Eternal has a national network of contractors, distributors, and sales representatives that are ready to assist you. Please select one of our Factory Authorized Service Trained (F.A.S.T.) or Factory Authorized Contractor Trained (F.A.C.T.) professionals. FAST and FACT contractors have been trained by our company to install and service Eternal hybrid water heaters. Enter your zip code to find one near you.
Zip/Postal Code
| GU195M Eternal Hybrid Water Heater | |
| Local State and Utility Rebates & Promotions* |
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Consult the Eternal Rebate Center for additional savings.
*See your authorized dealer for more details. Tax credit may vary. Consult your tax professional.
