Water Heater (Tankless) Replacement Cost in Thornton, CO
What homeowners in Thornton typically pay to replace a water heater (tankless) in 2026.
Typical range
$2.2k–$5.0k
Most homeowners pay around $3,500 installed.
EstimatedUpdated 6/17/2026
How we calculated this
Professional gas line and venting upgrades are required to meet local code in older residences.
Nearby cities
Other plumbing replacement costs in Thornton
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