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KB Plumbing and HVAC says it started in 2024 with five technicians, and it now holds 4.9 stars across 69 Google ratings, with the written reviews all from 2026. The Hampden company describes itself as a licensed plumbing and HVAC outfit serving Western Massachusetts, from Springfield, Chicopee and Holyoke to Agawam, East Longmeadow and Palmer. The work customers describe runs across both trades. In June 2026, a customer replacing a 17-year-old central air system in a house built before central air existed wrote that the project went without mishaps and that the crew showed them how to run the new system. An August 2026 reviewer said Keith came the same day for an AC problem. On the plumbing side, an August 2026 customer woke to a leaking fridge water line and had Seth there the same day, sooner than first estimated; a June 2026 reviewer had an old water heater removed and new PEX line run under a crawlspace; and an April 2026 customer described Keith quoting and installing a propane water heater with new piping and a bigger chimney vent, and explaining the warranty. Keith, George, Griffin and Seth all come up by name. A March 2026 reviewer with a basement leak said Griffin arrived early and gave clear quotes for each possible fix before getting the toilet repaired and the house dry the same day. In another March 2026 review, Keith changed out a failed boiler and a horizontal oil tank perched on a basement ledge. A February 2026 customer described a switch from an oil furnace to gas heat with central AC added. Several reviewers mention neat, clean work, and a February 2026 customer said Keith came back to repair and fix earlier work and did not charge for either. The company's site says it is insured.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from K & B Plumbing. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Excellent service !
Fantastic experience with KB Plumbing! They were responsive, professional, and took care of everything I needed. I would highly recommend!
On time, efficient, did good job.
Keith came the day I called with AC problem.He was on time ,very thorough, and aimed at correcting the problem right and price in my favor.I have retained him as my company to take care of my heating and AC professional.
On time problem fixed.
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2 changes recorded — last scanned Sep 24, 2026.
Transparent diagnostics5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
Two AC technicians out within a few hours5.0