A G Obrien Plumbing & Heating Co
📍 Duluth, MN 55811
✓ State licence verifiedHVAC contractor
Carlson Duluth Company
📍 4415 Venture Ave
Licence #MB004915 — active on the Minnesota Department of Labor and Industry register, valid to 04/02/2028. We check licences against state records; we do not inspect workmanship.
About this listing
Carlson Duluth Company is listed in Duluth, MN, and holds a Minnesota Department of Labor and Industry contractor licence #MB004915, current to 04/02/2028.
Is Carlson Duluth Company the right fit?
Based on what Carlson Duluth Company lists with AirProHQ: services offered are HVAC contractor. We have no record of them advertising 24/7 emergency service — call ahead to confirm hours for anything urgent. Their Minnesota contractor licence is verified and active as of our last check. For anything not covered here — such as whether they specifically serve commercial or multi-unit properties — that's worth confirming directly with Carlson Duluth Company before you book, or compare other Duluth contractors first.
Services
What HVAC work typically costs in Duluth
Before you call Carlson Duluth Company, it helps to know the going rate. These are national ranges for 2026 — ask any contractor for a written, itemised quote and compare it against them.
| Job | Typical cost |
|---|---|
| Diagnostic / service call | $75 – $200 |
| Capacitor replacement | $100 – $250 |
| Refrigerant recharge | $200 – $600 |
| Compressor replacement | $1,300 – $2,800 |
| Central air conditioner | $3,900 – $7,900 |
| Full HVAC (furnace + AC) | $5,000 – $12,500 |
Ranges from our AC repair cost guide andHVAC replacement cost guide. Actual cost depends on local labor rates and how many hours a system runs each year in your climate.
How to check this licence yourself
Don't take our word for it — Minnesota publishes this for free, and it takes about a minute:
- Open the Minnesota Department of Labor and Industry licence search.
- Search licence number MB004915, or the business name Carlson Duluth Company.
- Check the status reads active and the expiry is in the future — ours shows 04/02/2028.
- Ask to see proof of liability insurance too. State licensing does not cover that, and we cannot verify it.
A licence means the state has certified the holder to do this work. It is not a guarantee of workmanship, price or availability — see ourcontractor hiring checklistfor what else to ask.