All Tankless Water Heater Installation cost guides / State market page

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Tankless Water Heater Installation Cost in Massachusetts

In Massachusetts, tankless water heater installation costs range from $5,000 to $15,000, with a median price of $12,000 according to recent project data. Most homeowners can expect to pay between $5,053 and $14,000 for this service.

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Price distribution

Median $12,000.00 · typical $5,053.00–$14,000.00

$12,000.00

$5,000.00

$15,000.00

Shaded band: middle 50% of reports (25th–75th percentile). Median tick in teal.

Most jobs land between $5,010.60 and $14,800.00 (5th–95th percentile). Ignoring 1 outlier below and 1 above.

Based on reports from Apr 2026 (first entries this month).

Data freshness: 5 reports in the last 90 days. Help keep this current →

Data last updated Apr 6, 2026.

Latest reports

The underlying prices behind this page.

5 total reports

$15,000.00

Boston, MA · 8 days ago

Installed an HTP 150k BTU tankless with three zones 8 months ago. The job cost $15k.

$14,000.00

Boston, MA · 8 days ago

Replaced a 120K BTU Navien tankless combi 1.5 years ago. The job cost $14k.

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$ • • •

Boston, MA · 8 days ago

"Completed a tankless water heater replacement recently with 128 Plumbing & Heating. Got the largest unit installed at 150,000 BTU and it cost around $5K."

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