Licensed Plumber Required

Tankless Water Heater Installation Cost in San Antonio, TX

Galvanized – 3 Bath (Pre-1980)

The average cost of tankless water heater installation in San Antonio, TX with Galvanized Steel pipes (3-bath, 2,200 sq ft) is $3,020, with most homeowners paying between $2,510 and $3,680 depending on access difficulty, permit requirements, and contractor availability.

Cost Breakdown - San Antonio, TX

Parts & Materials
$1,920
Galvanized Steel profile
Labor
$940
8.1 hrs x $98/hr
Permits & Misc
$160
permits, disposal, parts
Total Estimate
$3,020
Range: $2,510-$3,680

* Estimates based on San Antonio area labor rates ($98/hr). Actual costs vary. Get 3 quotes.

Home Profile

Pipe Material
Galvanized Steel
Bathrooms
3 Bath
Home Size
2,200 sq ft
Local Labor Rate
$98/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 San Antonio?

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

Fair range: $2,510 to $3,680

Compare Quotes from Top-Rated Plumbers via Angi

Frequently Asked Questions

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

The average cost of tankless water heater installation in San Antonio, TX is $3,020, with most homeowners paying between $2,510 and $3,680 depending on home conditions and contractor availability.

How long does tankless water heater installation take?

Most tankless water heater installation jobs take 8.1 hours for a 3-bathroom home with Galvanized Steel 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 San Antonio?

Key cost factors include pipe material (Galvanized Steel), home size (2,200 sq ft, 3 baths), local labor rates ($98/hr in San Antonio), and permit fees.

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