Cost to Install a Tankless Hot Water Heater

August 2024

Tankless Hot Water Heater Installation CalculatorZip Code
Heaters
Item detailsQtyLow  High
Tankless Water Heater Cost 
Non-discounted retail pricing for: 8.5 gpm tankless gas water heater at 35F temperature rise. 0.92 energy factor. Digital controller. Requires natural gas supply and 3" vent connection at unit. 5 yr limited warranty.		1 heater$1,615.79$1,816.49
Tankless Hot Water Heater Installation Labor, Basic 
Basic labor to install tankless hot water heater with favorable site conditions. Mount and secure new heater. Connect vent to existing vent ducting. Connect water to existing supply lines. Leak and cycle test. Any surface demolition, structural modifications and restoration if needed is extra. Includes planning, equipment and material acquisition, area preparation and protection, setup and cleanup.		1 heater$1,615.79$1,816.49
Tankless Hot Water Heater Installation Job Supplies 
Cost of related materials and supplies typically required to install tankless hot water heater including: connectors, fittings and mounting hardware.		1 heater$1,615.79$1,816.49
Option: Remove Water Heater
Detach and turn off connections. Drain unit. Remove from premises. Disposal costs/fees not included.		1 heater$1,615.79$1,816.49
Tankless Water Heater Debris Disposal
Costs to load, haul away and dispose of old materials, installation waste and associated debris.		 35.437540.3125
 Unused Minimum Labor
Balance of 2 hr(s) minimum labor charge that can be applied to other tasks.		   
Totals - Cost To Install Tankless Hot Water Heater   
Average Cost per Heater  
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In August 2024 the cost to Install a Tankless Hot Water Heater starts at $2,635 - $3,048 per heater. Use our Cost Calculator for cost estimate examples customized to the location, size and options of your project.

To estimate costs for your project:

1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased.

2. Specify Project Size and Options Enter the number of "items" required for the project.

3. Re-calculate Click the "Update" button.



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Unit Costs = Successful Projects

Homewyse uses the Unit Cost Method for up-to-date example estimates and custom estimates created with Homewyse Lists. The Unit Cost Method promotes clear communication, sets realistic expectations between the customer and service professional - and results in mutual trust, fair pricing and high customer satisfaction.


Cost to Install a Tankless Hot Water Heater - Notes and General Information

This example estimate is for BASIC work performed in easily serviceable conditions by qualified trade professionals, using popular, IN STOCK products, materials and supplies commonly available at home improvement retailers. Your actual costs will vary due to the unique situation, requirements and choices of your project. Work not mentioned on this page, work with schedule difficulty, and work using master craftsman, premium materials, custom built products and project supervision will result in HIGHER COSTS! Explore popular gas tankless water heater new installation labor options and material prices here.

This example estimate is for educational and illustrative purposes - it is NOT a substitute for written quotes from trade professionals. Homewyse strongly recommends that you contact reputable professionals for accurate assessments of work required and costs for your project - before making any decisions or commitments.

The cost estimate includes:

  • Costs for local material / equipment delivery to and service provider transportation to and from the job site.
  • Costs to prepare the worksite for Tankless Hot Water Heater Installation, including costs to protect existing structure(s), finishes, materials and components.
  • Labor setup time, mobilization time and minimum hourly charges that are commonly included for small Tankless Hot Water Heater Installation jobs.

The cost estimate does NOT include:

  • Costs for removing, relocating, repairing, or modifying existing framing, surfacing (including molding), HVAC, electrical, and plumbing systems - or bringing any systems into compliance with current building codes.
  • Costs for testing and remediation of hazardous materials (asbestos, lead, etc.).
  • General contractor overhead and markup for organizing and supervising the Tankless Hot Water Heater Installation. Add 13% to 22% to the total cost above if a general contractor will supervise this project.
  • Sales tax on materials and supplies.
  • Permit or inspection fees (or portion thereof) required by your local building department for your overall project.

References - Tankless Hot Water Heater Installation

Tankless Hot Water Heater Installation Budget Management

Tankless Hot Water Heater Installation Cost Infographic - critical areas of budget risk and savings

This infographic highlights decisions and site issues that can cause large cost variances in the typical Tankless Hot Water Heater Installation budget.


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