Basic
$1,956 – $4,401 per project
Non-condensing indoor gas tankless about 160k BTU, stainless steel venting, isolation valves, connected to the gas line

Photo: Behrat · CC BY-SA 3.0 · Source
Supply and install a whole-home natural-gas tankless water heater including venting and gas connection; gas-line upsizing beyond basic hookup extra.
Install Tankless Gas Water Heater in Chicago, Illinois typically costs $2,301 to $5,177 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Chicago are 19.0% higher than the national average for install tankless gas water heater.
National average: $2,000 – $4,500 per project
$1,956 – $4,401 per project
Non-condensing indoor gas tankless about 160k BTU, stainless steel venting, isolation valves, connected to the gas line
$2,301 – $5,177 per project
Condensing gas tankless about 180k BTU, PVC venting, isolation valve kit, condensate drain, gas connection and flow test
$2,876 – $6,472 per project
Condensing gas tankless 199k BTU with built-in recirculation pump, PVC venting, isolation valves, condensate neutralizer
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $963 – $2,167 | job |
| Labor | labor | $910 – $2,048 | job |
| Supplies & Other | supplies | $257 – $578 | job |
| Equipment & Disposal | equipment | $171 – $385 | job |
Two tankless gas water heaters mounted on an exterior brick wall
Photo: Dinkun Chen · CC BY-SA 4.0 · Source
Find a pro to do thisLabor costs in Chicago run proportionally higher than materials, which may favor material-heavy solutions.
BuildX Pro researches and reviews the national price range for Install Tankless Gas Water Heater, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 2026.
Connect with local install tankless gas water heater contractors in Chicago for personalized quotes based on your specific project.