What it delivers
The Heatrova TGHT002 102,000 BTU Natural Gas Tankless Water Heater is a non-condensing gas tankless with a 102,000 BTU/h burner and a stated maximum flow of 4.3 GPM.
Expect about 2.2 GPM with cold winter water (a 70°F rise) and 3.5 GPM when the inlet is milder (45°F rise); that is 1 shower at 2 GPM in January. Check it against your own fixtures.
The line must deliver about 98 cubic feet of natural gas an hour when it fires flat out. The requirement calculator adds it up; a licensed fitter confirms the pipe.
Non-condensing indoor units run hot exhaust and vent in the maker's listed vent system (often stainless Category III), which costs more than plastic.
Listed details: connections: 3/4" npt; connectivity: leak detection; model: TGHT002.
The listing gives dimensions of 13.7 in (W) x 13.7 in (H).
Right unit for this house?
Install it when
- One shower at a time in cold climates
- Replacing a gas tank heater
Look at another unit when
- More than 1 winter shower at once
- Homes without a gas line
Strengths and trade-offs
Strengths
- 102,000 BTU/h input
- Up to 4.3 GPM
Trade-offs
- Needs a gas line sized for the load
- Stainless venting costs more
- Scale builds up without flushing
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | TGHT002 | Retailer |
|---|---|---|
| Dimensions (seller) | 13.7"W x 13.7"H | Retailer |
| Voltage | 120 V AC | Retailer |
| Input (maker) | 102,000 BTU/h | Retailer |
| Max flow (maker) | 4.3 | Retailer |
| Fuel | natural gas | Retailer |
| Connections | 3/4" npt | Retailer |
| Connectivity | leak detection | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
Final verdict
A well-specified non-condensing gas tankless for one shower at a time in cold climates.
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