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Tankless Water Heater Replacement Cost in Illinois — Get Accurate Local Estimates

Tankless water heaters provide on-demand hot water and long-term energy savings in Illinois. Whether you're replacing an existing tankless unit or upgrading from a traditional tank system, understanding the replacement cost is key to making an informed decision.

This page provides:

  • Average tankless water heater replacement costs in Illinois
  • Cost differences between gas and electric tankless
  • Factors that impact tankless replacement pricing statewide
  • Links to city-specific tankless replacement cost guides

All estimates reflect local conditions in Illinois.

Average Cost to Replace a Tankless Water Heater in Illinois

In Illinois, the typical cost to replace a tankless water heater ranges from:

$1,500 – $4,500

for tankless replacement

$2,000 – $5,500

when upgrading from tank to tankless

Tankless replacement costs in Illinois are often influenced by:

  • Unit capacity and type (gas vs electric)
  • Venting system requirements
  • Electrical or gas line upgrades needed
  • Whether upgrading from tank system

Tankless replacement costs are higher than standard tank systems because they often involve more complex installation requirements.

Get a Local Tankless Water Heater Replacement Quote in Illinois

Tankless systems offer energy efficiency and space savings.

Get Local QuoteView Cost By Cities

Tankless Water Heater Replacement vs Other Options in Illinois

Understanding your options is critical:

Tankless Replacement

  • On-demand hot water system
  • Higher upfront cost but energy efficient
  • Space-saving design
  • Long-term operational savings

Standard Tank Replacement

  • Lower upfront cost
  • Simpler replacement process
  • Uses existing connections

Tankless systems offer energy savings over time, offsetting the higher initial replacement cost.

Tankless Replacement Cost by Type

Gas Tankless Replacement

  • Higher capacity for large homes
  • Requires proper venting
  • Lower operating costs

Electric Tankless Replacement

  • Simpler installation
  • May require electrical panel upgrade
  • No venting required

Whole House Tankless

  • Single unit for entire home
  • Higher capacity requirements
  • Best for larger households

Point-of-Use Tankless

  • Smaller units for specific areas
  • Lower replacement cost
  • Multiple units may be needed

Factors That Impact Tankless Replacement Cost in Illinois

Several state-level factors influence pricing:

  • Average labor rates across Illinois
  • Unit capacity and type (gas vs electric)
  • Venting system requirements
  • Electrical or gas line upgrades needed
  • Whether upgrading from tank system

Costs can vary widely between cities within Illinois.

When Tankless Replacement Costs Are Higher in Illinois

Your tankless replacement cost in Illinois may be higher if:

  • You're upgrading from a tank system
  • Electrical panel needs upgrading
  • Gas line capacity must be increased
  • New venting system is required
  • Multiple units are needed for large homes

These factors are common when upgrading to tankless, but the long-term energy savings often offset the initial cost.

Scope Clarification

This page focuses on tankless water heater replacement in Illinois only.

For other services, visit:

Each page targets a different search intent.

Tankless Water Heater Replacement Cost by City in Illinois

Below are detailed tankless replacement cost guides for cities in Illinois:

Select your city for localized pricing and tankless replacement insights.