Takagi T-H1-DV-N Compact Condensing Tankless Water Heater
Model T-H1-DV-N
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Btu
120000
Venting
PVC Direct Vent
Fuel Type
Natural Gas
Tank Type
Tankless
Capacity Gpm
6.6
Energy Factor
0.93
Takagi T-H1-DV-N Compact Condensing Tankless Water Heater Review
The Takagi T-H1-DV-N is a compact condensing tankless water heater. "T-H1" identifies the smaller condensing platform; "DV-N" means direct-vent natural gas.
Specs: 110,000 BTU natural gas input, UEF 0.95 condensing, 5.5 GPM at a 35°F rise, stainless steel heat exchanger, PVC condensing venting. 15-year warranty on heat exchanger.
The 110K BTU class is the smallest condensing tankless in Takagi's line. Sized for 1-bath warm-climate primary residences. Smaller gas line requirements (typically 1/2" line works) and lower install cost than full 199K BTU class.
About $1,400 unit, $2,900 installed. Right buyer: 1-bath warm-climate primary residence wanting condensing tankless at smaller capacity through plumbing supply channels.
Pros
- On-demand operation at 6.6 GPM — no standby heat loss; unlimited hot water if demand is within flow-rate capacity
- Strong UEF 0.93 efficiency — approximately 20% lower annual operating cost vs 0.62 standard
- 15-year warranty — top-tier coverage for residential water heaters
Cons
- Requires dedicated 120K BTU gas supply line — undersized gas piping is the leading cause of flow-rate shortfalls
Full Specifications
Brand
Takagi
Model Number
T-H1-DV-N
Btu
120000
Venting
PVC Direct Vent
Fuel Type
Natural Gas
Tank Type
Tankless
Capacity Gpm
6.6
Energy Factor
0.93
Warranty Years
15
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