Quote follow-up software for trades and shops
We ran the office. Then we wrote the software.
Carbonset is fourteen people in Long Island City. Two of our three founders spent eleven years, between them, in a mechanical contractor's office.
A spreadsheet tab called FOLLOW UP.
Carbonset started in 2024 in a back office in Maspeth. Two of us had spent eleven years, between us, running the office at a mechanical contractor: answering the phones, booking no-heat calls, and keeping a spreadsheet tab called FOLLOW UP that nobody had time to open. The third had written dispatch software for a freight company. We kept watching good shops lose jobs to whoever called back first. So we built the follow-up we never had time to do. In 2025 we moved to Long Island City, upstairs from a tile distributor, and we still answer the phone at 7:00.
- 2024
A back office in Maspeth. The first quote sent with Carbonset: a water heater in Ridgewood.
- 2025
Long Island City, upstairs from a tile distributor. Texting and cadences ship.
- 2026
Deposits, the accounting handoff, the field app. Fourteen people.
How we work.
- We answer the phone. Support starts at 7:00 because your day does.
- We ship on Tuesdays. Small releases, written up in the changelog the same day.
- Every hire rides along. Two days in a truck or a shop office in the first month.
- We sell seats, not data. No ads, no selling lists, no partners.
- We say what it doesn't do. If Carbonset can't do something, the docs say so near the top.
The people.
Dana R.
Co-founder, support and operationsRan the office at a mechanical contractor for 7 years. Still takes the 7:00 support calls on Mondays.
Luis A.
Co-founder, productEstimator, then operations manager, 4 years. Writes the first draft of every cadence we ship.
Wen Z.
Co-founder, engineeringWrote dispatch software for a freight company. Owns the scheduler that sends every step.
Built appointment scheduling for a clinic network.
Ran billing for a roofing company in Nassau.
Twelve years behind a plumbing supply counter.
Designs forms people fill out in trucks.
Sold ductwork to contractors for 6 years.
Most of them have worked a counter, a phone or a truck.
The office.
Visits by appointment, Tuesdays and Thursdays, a short walk from Court Square.
Open roles.
Four open roles: support lead, senior full-stack engineer, onboarding specialist and product designer. Every listing shows its salary range.
See the open roles →Talk to us. A person answers at 7:00.
Sales, support and security each have their own line.