Reputation Priority

JN Service HVAC & Plumbing

24/7 HVAC & plumbing mastery for Walpole, Cambridge, Newton & the greater Boston neighborhoods — upfront pricing, same-day response, work done right the first time. Serving distinguished homes and properties throughout Walpole, MA with impeccable care, clean work sites, and uncompromising precision.

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✦ Historic & Architectural Care

✦ Dust & Floor Protection

✦ Written Lifetime Guarantee

JN Service HVAC & Plumbing craftsmanship in Walpole

Regional Mastery: Walpole, MA

historic Boston triple-decker plumbing, cast-iron sewer stack repiping, galvanized line upgrades, hydronic boiler freeze protection

Dedicated Service Scopes

Expert Solutions for Walpole Homes

From scheduled maintenance to major infrastructure overhauls, executed to the highest trade standards.

Emergency Pipe & Leak Repair

Burst supply lines, failed relief valves, and hidden slab leaks get a same-day response — our crews are dispatched 24/7 across Walpole, Newton, and Somerville. We locate the breach, stop the water, and repair with properly rated copper or PEX, not a temporary clamp.

✓ Code-compliant installation
✓ Upfront agreed pricing
✓ Workmanship warranty included

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Cast-Iron Stack & Galvanized Repiping

Many Boston-area triple-deckers still run original cast-iron sewer stacks and galvanized supply lines that are corroded from the inside out. We scope the line, replace stacks with PVC and supply runs with copper or PEX — restoring pressure and ending chronic drain backups.

✓ Code-compliant installation
✓ Upfront agreed pricing
✓ Workmanship warranty included

Schedule This Service →

Boiler Service & Hydronic Freeze Protection

We service and replace gas and oil hydronic boilers, then protect the system for New England winters: glycol charge verification, air purging, aquastat and circulator checks, and low-temperature cutoffs so unused wings of the house never freeze a loop.

✓ Code-compliant installation
✓ Upfront agreed pricing
✓ Workmanship warranty included

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Physical Proof of Work

Visual Transformations & Upgrades

Real project comparisons demonstrating code-compliant modernizations and equipment replacements in Walpole.

High-Efficiency Tankless Modernization

Navien condensing tankless conversion with closed-loop expansion tank — 5.5-hour turnaround

Illustrative example — not JN Service HVAC & Plumbing's work

BEFORE

AFTER

Key Upgrade Specifications

Licensed, code-compliant installation
Upfront pricing agreed before work begins
Work area cleaned up on completion

Warranty discussed with your estimate

Request This Upgrade → 📞 Dispatch

Basement Sewer Stack Modernization

Cracked, calcified cast-iron sewer stack weeping wastewater at cleanout fitting

Illustrative example — not JN Service HVAC & Plumbing's work

BEFORE

AFTER

Key Upgrade Specifications

Licensed, code-compliant installation
Upfront pricing agreed before work begins
Work area cleaned up on completion

Warranty discussed with your estimate

Request This Upgrade → 📞 Dispatch

Hydronic Boiler Zone & Piping Manifold

Aging uninsulated heating pipes with sticking zone valves and pressure imbalance

Illustrative example — not JN Service HVAC & Plumbing's work

BEFORE

AFTER

Key Upgrade Specifications

Licensed, code-compliant installation
Upfront pricing agreed before work begins
Work area cleaned up on completion

Warranty discussed with your estimate

Request This Upgrade → 📞 Dispatch

Customer Testimonials

Verified Feedback from Neighbors in Walpole

Real feedback from local property owners who trusted JN Service HVAC & Plumbing for reliable, high-quality service.

★★★★★

“Wendel was amazing. Very clean work, no mess left. Mini splits work amazingly after the cleaning and maintenance. Highly recommend!”

Laura Weir Verified Local Customer

★★★★★

“I had a great experience with JN. In an emergency leak they were able to come to my house same day and fix the issue and kept me informed throughout the whole process. They were very helpful and knowledgeable in their trade. They were also extremely helpful in converting my heating system and navigating the mass save process.”

Matheus Coelho Verified Local Customer

★★★★★

“Minha experiência com a JN HVAC foi excelente. O Cauet foi bem prestativo e foi fazer o quote bem rapido. Recomendo!”

Hideaki Verified Local Customer

JN Service HVAC & Plumbing team and work vehicle in Walpole

● Serving Walpole, MA & Nearby Communities

Local Heritage & Values

About JN Service HVAC & Plumbing

Founded on principles of honest craftsmanship, upfront communication, and technical excellence, JN Service HVAC & Plumbing has served the Walpole area with dependable residential and commercial services.

Our team is fully licensed, insured, and background-checked. We specialize in historic Boston triple-decker plumbing, cast-iron sewer stack repiping, galvanized line upgrades, hydronic boiler freeze protection, ensuring your property remains protected and efficient year-round.

Fully Licensed & Insured

4.8-Star Google Reputation

Upfront Itemized Pricing

Zero Travel Surcharges

Local Coverage Across Walpole, MA

Our licensed service trucks are stationed locally to provide rapid response times throughout Walpole, Cambridge, Newton, Somerville, Brookline, Watertown.

Guaranteed Dispatch Radius

Walpole & Surrounding Municipalities

No long-distance travel fees for standard service calls within our core operating territory.

Connect With Us

Request an Upfront Estimate

Reach out directly by phone or submit your project details below for a prompt, itemized response.

Direct Phone Line

(781) 731-1511

Physical Service Base

1600 Providence Hwy St. 234, Walpole, MA 02081

Operational Hours

Monday: Open 24 hours, Tuesday: Open 24 hours, Wednesday: Open 24 hours, Thursday: Open 24 hours, Friday: Open 24 hours, Saturday: Open 24 hours, Sunday: Open 24 hours

Fast Project Estimate

Fill out the form below and our team will follow up promptly.