“I do not think there is a better service oriented company on the island. The company re-prioritized customer calls because my heater wasn’t functioning and heating my house. It was determined that I …”
“Greg did a great job. They showed up when they said,came in and got the job done, clean and fast. Best part is he was 13000.00$ less than my other quote.”
“Excellent customer service. Very responsive. They show up when they say they will. I left a message on a Saturday and got a call back the same day. They had someone at my house Monday morning and iden…”
“These guys are great!! Once you are their customer YOU ARE THEIR CUSTOMER! Came same day to fix our heating problem!! Thanks Marshalls Heating!!”
“Extremely rude old man was short tempered and very unprofessional. Look elsewhere if you want to be treated like an actual person.”
Marshall S Mechanical provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Coupeville, WA.
Marshall S Mechanical has a 4.2 out of 5 star rating based on 5 Google reviews.
Yes. License number: MARSHMI813JH. Status: ACTIVE. You can verify on the Washington Department of Labor & Industries (L&I) lookup at https://secure.lni.wa.gov/verify.
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Licensing verified 2026-04-21. Reviews refreshed 2026-04-21.
Licensing data: Washington Department of Labor & Industries (L&I) · Company data: verified business records + Google Business profile
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