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Fast Local Dispatch: Serving Chelmsford, MA & Nearby Areas
Fully Licensed & Insured: Professional Local Service
Craftsmanship Priority

Eric C. Shaw Mechanical

Heating done right the first time — master mechanical craftsmanship serving Chelmsford & surrounding communities with honest assessments and straightforward upfront pricing.

Call (978) 408-0086 Get an Estimate →
Fully Licensed & Insured
Upfront Pricing
Fast Local Response
Eric C. Shaw Mechanical service vehicle and equipment
high-efficiency heat pump mini-split conversions, Mass Save rebate compliance, steam boiler tune-ups

Our Workmanship Promise

Every project is backed by our full craftsmanship guarantee. Clear communication, itemized quotes before work begins, and respect for your property.

Interactive Troubleshooting

Need Immediate Guidance?

Select the issue you're experiencing to see typical root causes and upfront diagnostic recommendations for Chelmsford properties.

Heat Pump Mini-Split Conversions

Heat Pump Mini-Split Conversions Service

Ductless and ducted cold-climate heat pump installations sized properly for your home's heat load — often replacing expensive oil, propane, or electric resistance heat. We handle load calculations, line-set routing, and commissioning so your system delivers rated efficiency from day one.

📞 Call (978) 408-0086
Service Specialties

Core Trade Capabilities

Comprehensive, licensed solutions for homes and businesses in Chelmsford and surrounding areas.

Heat Pump Mini-Split Conversions

Ductless and ducted cold-climate heat pump installations sized properly for your home's heat load — often replacing expensive oil, propane, or electric resistance heat. We handle load calculations, line-set routing, and commissioning so your system delivers rated efficiency from day one.

Steam & Hot Water Boiler Service

Annual tune-ups, combustion testing, and repairs for steam and hydronic boilers — the heartbeat of many older Chelmsford homes. We clear clogged returns, replace worn gauge glass and gaskets, balance radiators, and eliminate the banging, short-cycling, and uneven heat that signal trouble.

Mass Save Rebates & Energy Compliance

Navigating Mass Save incentives shouldn't cost you the savings. We specify equipment that qualifies, document efficiency ratings correctly, and complete the rebate paperwork so your heat pump or boiler upgrade captures every available rebate and 0% HEAT loan eligibility.

Heating Repair & No-Heat Emergencies

Fast, accurate diagnosis when your heat fails mid-winter — from failed igniters and flame sensors to thermostat faults and circulator pump failures. We arrive with the common parts on the truck, quote the repair before we start, and get your heat restored without upselling a replacement you don't need.

Physical Proof of Work

Visual Transformations & Upgrades

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

Cold-Climate Heat Pump Modernization

Weathered 10 SEER AC condenser rattling loudly with failing compressor and R-22 refrigerant

Illustrative example — not Eric C. Shaw Mechanical's work
Before upgrade BEFORE
After upgrade 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

High-Efficiency Furnace Modernization

Draft-hood 80% furnace with rusted chimney liner, cracked heat exchanger, and short cycles

Illustrative example — not Eric C. Shaw Mechanical's work
Before upgrade BEFORE
After upgrade 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

Multi-Zone Ductless Climate System

Noisy window AC units vibrating in frame with drafty seasonal window gaps

Illustrative example — not Eric C. Shaw Mechanical's work
Before upgrade BEFORE
After upgrade 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
Eric C. Shaw Mechanical team and work vehicle in Chelmsford
● Serving Chelmsford, MA & Nearby Communities
Local Heritage & Values

About Eric C. Shaw Mechanical

Founded on principles of honest craftsmanship, upfront communication, and technical excellence, Eric C. Shaw Mechanical has served the Chelmsford area with dependable residential and commercial services.

Our team is fully licensed, insured, and background-checked. We specialize in high-efficiency heat pump mini-split conversions, Mass Save rebate compliance, steam boiler tune-ups, ensuring your property remains protected and efficient year-round.

Fully Licensed & Insured
Verified Local Contractor
Upfront Itemized Pricing
Zero Travel Surcharges

Local Coverage Across Chelmsford, MA

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

Guaranteed Dispatch Radius
Chelmsford & 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
(978) 408-0086
Physical Service Base
145 Stedman St, Chelmsford, MA 01824
Operational Hours
Monday: 5 AM to 5 PM, Tuesday: 5 AM to 5 PM, Wednesday: 5 AM to 5 PM, Thursday: 5 AM to 5 PM, Friday: 5 AM to 5 PM, Saturday: Closed, Sunday: Closed

Fast Project Estimate

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