Greenwich, CT190 Davis Ave, Greenwich, CT 06830
Verified record
"Been loyal customers for years," a 2025 Google customer wrote of Oscar Thomsen Plumbing & Heating, praising Malcolm and his team. A 2024 customer said the team coordinated timing with them and laid out what the work would entail before it was performed. On Google, the business holds 4.4 stars from 7 ratings. In a September 2024 Reddit thread, a Stamford commenter called Malcolm from Oscar Thomsen their go-to for plumbing jobs. Connecticut lists its S1 heating and cooling contractor licence, HTG.0302293-S1, held by Oscar Thomsen Jr, as inactive.
“Malcolm from Oscar Thomsen is my go-to for plumbing jobs.”
Malcolm and his team are fabulous. Been loyal customers for years.
Excellent interaction with team to coordinate timing, work expectations i.e. what would be entailed in work to be performed, etc. Highly recommend this vital service
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1 change recorded — last scanned Oct 14, 2026.
Typical Connecticut range for this kind of work, from regional averages — not a quote from Oscar Thomsen Plumbing & Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,700 – $10,700
Typical HVAC project around $7,700
