Licensed Plumber Required

Tankless Water Heater Installation Cost in Austin, TX

Cast Iron – 2 Bath (Pre-1960)

The average cost of tankless water heater installation in Austin, TX with Cast Iron pipes (2-bath, 1,500 sq ft) is $2,810, with most homeowners paying between $2,330 and $3,430 depending on access difficulty, permit requirements, and contractor availability.

Cost Breakdown - Austin, TX

Parts & Materials
$1,570
Cast Iron profile
Labor
$1,130
8.6 hrs x $111/hr
Permits & Misc
$110
permits, disposal, parts
Total Estimate
$2,810
Range: $2,330-$3,430

* Estimates based on Austin area labor rates ($111/hr). Actual costs vary. Get 3 quotes.

Home Profile

Pipe Material
Cast Iron
Bathrooms
2 Bath
Home Size
1,500 sq ft
Local Labor Rate
$111/hr

Signs You Need This Service

  • !Constantly running out of hot water
  • !High energy bills from aging tank unit
  • !Upgrading during kitchen or bath renovation
  • !Adding a new bathroom or ADU
  • !Tank water heater at end of life

What is Included

  • +Remove existing water heater
  • +Wall-mount new tankless unit
  • +Upgrade gas line if required
  • +Install dedicated venting
  • +Program and commission unit
  • +Test flow at all fixtures

Ready to Hire a Plumber in Austin?

Use this estimate as your baseline. Get at least 3 quotes and ask each plumber to itemize parts, labor, and permits separately.

Fair range: $2,330 to $3,430

Compare Quotes from Top-Rated Plumbers via Angi

Frequently Asked Questions

How much does tankless water heater installation cost in Austin, TX?

The average cost of tankless water heater installation in Austin, TX is $2,810, with most homeowners paying between $2,330 and $3,430 depending on home conditions and contractor availability.

How long does tankless water heater installation take?

Most tankless water heater installation jobs take 8.6 hours for a 2-bathroom home with Cast Iron pipes. Complex jobs or older homes may require additional time.

Can I do tankless water heater installation myself?

This job requires a licensed plumber due to permit requirements, complexity, or safety considerations.

What affects tankless water heater installation cost in Austin?

Key cost factors include pipe material (Cast Iron), home size (1,500 sq ft, 2 baths), local labor rates ($111/hr in Austin), and permit fees.

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