Licensed Plumber Required

Tankless Water Heater Installation Cost in Boston, MA

Mixed Copper/PEX – 3 Bath

The average cost of tankless water heater installation in Boston, MA with Mixed (Copper/PEX) pipes (3-bath, 2,200 sq ft) is $2,440, with most homeowners paying between $2,030 and $2,980 depending on access difficulty, permit requirements, and contractor availability.

Cost Breakdown - Boston, MA

Parts & Materials
$1,270
Mixed (Copper/PEX) profile
Labor
$1,030
5.9 hrs x $148/hr
Permits & Misc
$140
permits, disposal, parts
Total Estimate
$2,440
Range: $2,030-$2,980

* Estimates based on Boston area labor rates ($148/hr). Actual costs vary. Get 3 quotes.

Home Profile

Pipe Material
Mixed (Copper/PEX)
Bathrooms
3 Bath
Home Size
2,200 sq ft
Local Labor Rate
$148/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 Boston?

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

Fair range: $2,030 to $2,980

Compare Quotes from Top-Rated Plumbers via Angi

Frequently Asked Questions

How much does tankless water heater installation cost in Boston, MA?

The average cost of tankless water heater installation in Boston, MA is $2,440, with most homeowners paying between $2,030 and $2,980 depending on home conditions and contractor availability.

How long does tankless water heater installation take?

Most tankless water heater installation jobs take 5.9 hours for a 3-bathroom home with Mixed (Copper/PEX) 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 Boston?

Key cost factors include pipe material (Mixed (Copper/PEX)), home size (2,200 sq ft, 3 baths), local labor rates ($148/hr in Boston), and permit fees.

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