When a drain is backing up, the temptation is to hire whoever answers first — which is exactly how the industry's worst operators get their work. Ten questions, most answerable in one phone call, separate the professionals from the truck-and-a-snake economy. We publish this list knowing we're handing you our own job interview; we like our answers.
Questions 1–4: credentials and money
One: Are you licensed and insured for plumbing work in New Jersey — and what's the license number? (NJ licenses are verifiable; hesitation is an answer.) Two: Is pricing flat-rate and quoted before work begins, or hourly? (Hourly drain work rewards slowness; flat-rate quoted on-site rewards competence.) Three: What exactly does the quoted price include — and what would change it? (The honest answer names specifics: access point, line, method. The dishonest answer is 'depends what we find,' delivered after arrival.) Four: Do you charge extra for nights and weekends, and how much? (Any answer is acceptable; discovering it on the invoice is not.)
Questions 5–7: equipment and evidence
Five: What equipment is on the truck — cable machines, jetter, camera? (A company with only a small cable machine will solve every problem with a small cable machine.) Six: If you camera my line, do I get the footage? (The only professional answer is yes, always. Footage-hoarding enables the industry's worst upsells.) Seven: If you recommend a repair, will you show me the specific defect on video and locate it at the surface? (Repairs sold without evidence are repairs sold on fear.)
Questions 8–10: accountability
Eight: What's your guarantee on a cleared line? (Norms vary honestly by situation — root blockages recur by nature — but a company should articulate what it stands behind and for how long.) Nine: Who actually shows up — your employees or subcontractors? (Either can be fine; not knowing is not.) Ten: Can you point to recent local reviews? (Read the negative ones and the responses — a company's reply to criticism tells you what your dispute would look like.)
The red-flag shortlist
Walk away from: pressure to authorize a major repair tonight based on what the technician 'felt' in the line; quotes that inflate after arrival; refusal to show camera footage of your own pipe; cash-only preferences; and any diagnosis of a collapsed line without video evidence. The pattern in all of them is information kept from you. A professional's business model survives an informed customer — that's the whole test. Lumin Drain NJ answers all ten questions before you ask, everywhere in New Jersey: 929-662-1816.