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Fast Local Dispatch: Serving Waltham, MA & Nearby Areas
4.9 Stars on Google (38 verified reviews)
Reputation Priority

Kensington Mechanical Inc

Waltham's HVAC and mechanical contractor since day one — heat pump conversions, boiler tune-ups, and honest advice before any work begins. Serving distinguished homes and properties throughout Waltham, MA with impeccable care, clean work sites, and uncompromising precision.

✦ Historic & Architectural Care
✦ Dust & Floor Protection
✦ Written Lifetime Guarantee
Kensington Mechanical Inc craftsmanship in Waltham
Regional Mastery: Waltham, MA
high-efficiency heat pump mini-split conversions, Mass Save rebate compliance, steam boiler tune-ups
Dedicated Service Scopes

Expert Solutions for Waltham Homes

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

01

Heat Pump Mini-Split Conversions

Ductless and ducted cold-climate heat pump systems sized with real Manual J load calculations for Waltham's older housing stock. We manage line-set and condensate routing, electrical coordination, commissioning, and the Mass Save rebate documentation required for compliance.

  • ✓ Code-compliant installation
  • ✓ Upfront agreed pricing
  • ✓ Workmanship warranty included
02

Steam & Hot Water Boiler Tune-Ups

Full seasonal service for residential steam and hydronic boilers: low-water cutoff testing, main and radiator vent replacement, skim strokes to clear surging, and burner combustion tuning. Stops short-cycling, evens out cold radiators, and lowers fuel bills through the heating season.

  • ✓ Code-compliant installation
  • ✓ Upfront agreed pricing
  • ✓ Workmanship warranty included
03

Commercial Refrigeration & Walk-In Coolers

Emergency and scheduled service for restaurant walk-ins, reach-ins, ice machines, and prep-line refrigeration across Waltham, Newton, and Watertown. We diagnose compressor, defrost, and airflow faults fast — because a cooler drifting above 40°F can't wait until morning.

  • ✓ Code-compliant installation
  • ✓ Upfront agreed pricing
  • ✓ Workmanship warranty included
Physical Proof of Work

Visual Transformations & Upgrades

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

High-Efficiency Cold-Climate Heat Pump Modernization

Replaced aged, loud AC condenser with whisper-quiet variable-speed inverter heat pump

Illustrative example — not Kensington Mechanical Inc'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 Kensington Mechanical Inc'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 Kensington Mechanical Inc'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
Customer Testimonials

Verified Feedback from Neighbors in Waltham

Real feedback from local property owners who trusted Kensington Mechanical Inc for reliable, high-quality service.

★★★★★

“Kensington Mechanical is top-notch! Professional, reliable, and always deliver quality work. From start to finish, the team was responsive and respectful of our time and space. Highly recommend them for any HVAC or mechanical needs!”

Towfeq Zarif Verified Local Customer
★★★★★

“This was the 3rd time I called Kensington for a service call at my restaurant. Instead of charging me for a visit, they made recommendations on what to do before proceeding with any work! They are an honest company and Andrew is a great person to work with. I hope to give them some business in the future. Highly recommended!”

kimchipapi Verified Local Customer
★★★★★

“Great company to work with. Fair prices and quality work.”

Charlie Verified Local Customer
Kensington Mechanical Inc team and work vehicle in Waltham
● Serving Waltham, MA & Nearby Communities
Local Heritage & Values

About Kensington Mechanical Inc

Founded on principles of honest craftsmanship, upfront communication, and technical excellence, Kensington Mechanical Inc has served the Waltham 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
4.9-Star Google Reputation
Upfront Itemized Pricing
Zero Travel Surcharges

Local Coverage Across Waltham, MA

Our licensed service trucks are stationed locally to provide rapid response times throughout Waltham, Newton, Lexington, Belmont, Weston, Lincoln, Watertown, Woburn.

Guaranteed Dispatch Radius
Waltham & 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
(888) 391-2500
Physical Service Base
11 Green St, Waltham, MA 02451
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.