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S.D.H Plumbing & Heating is a Waltham plumbing and heating company with 85 ratings averaging 4.7 on both HomeAdvisor and Angi, where 87% of those ratings are five stars and 1% are one star. Its BBB grade is A+. The four written reviews date from 2022 and 2023. In a December 2023 Angi review, a customer thanked Greg for fixing the plumbing to their furnace and restoring heat, and for taking the time to explain the problem first. An August 2022 customer had a tenant's garbage disposal replaced and called the service reasonable. In a March 2022 review, a customer said the crew arrived early, worked efficiently and cleaned up, and a January 2022 reviewer summed it up as "Quick and thorough." Angi and HomeAdvisor list heating, plumbing and water heater installation, replacement and repair, along with emergency service and warranties. BBB lists Massachusetts Board of State Examiners of Plumbers and Gas Fitters license #16465 for the company. Massachusetts lists its plumber licence, 4674-PL-C, as active, held by SDH Plumbing & Heating Inc.
“At S.D.H. Plumbing & Heating, we have a combined 200 years of experience in the field and have been installing heating and cooling systems in your Waltham, MA, neighborhood.”
“At S.D.H. Plumbing and Heating, you can count on us for emergency plumbing & heating repairs in Middlesex County.”
Thank you Greg for fixing the plumbing to our furnace ! We have heat so happy! You were very professional and great working skills ! You took the time to explain the problem greatly appreciated and then fixed it !
Excellent service ,friendly and reasonable. Replaced a tenants garbage disposal. Will definitely hire this company again for all of our needs.
These guys arrived early, they were super friendly and efficient. They were also very funny. They got the job done, answered any of her questions, and cleaned up. I would definitely recommend them.
Quick and thorough.
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1 change recorded — last scanned Sep 8, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from S.D.H Plumbing & Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Built a full outdoor kitchen's gas and water lines4.5
Long operationNot yet rated
Active license2.5
