The moment a technician arrives at your Canoga Park home is the moment you have the most leverage — before any work has started, before any quote is written. A few well-placed questions in those first five minutes tell you almost everything you need to know about whether you’re getting an honest diagnosis or a sales pitch.
Here are the questions worth asking every time, and what a good answer actually sounds like.
Cooling By Design is headquartered at 21201 Victory Blvd, Suite 125, Canoga Park, CA 91303. Licensed (#1148982). Call (877) 702-6654.
1. What Is Your License Number?
A legitimate technician or company answers this instantly. Verify it yourself at cslb.ca.gov before any work begins — this takes under two minutes and confirms the license is active and matches the company name.
2. What Exactly Did You Find, and How Did You Find It?
A good technician can point to a specific reading: refrigerant pressure, a voltage measurement, a visible crack or leak. “It’s just old” or “it needs to be replaced” without a specific finding is a sales pitch, not a diagnosis. Ask to see the readings yourself if you’re unsure.
3. Is This Covered by My Warranty?
Ask this before authorizing any repair on a system under 10 years old. A technician should check the manufacturer’s warranty status by serial number, not assume it has expired.
4. Will This Fee Apply Toward the Repair?
Confirm whether the diagnostic fee (typically $75-$125 in this market) is credited toward the repair cost if you move forward, or charged separately on top of parts and labor.
5. Can I Get That in Writing Before You Start?
Every reputable technician provides a written quote before beginning repair work, regardless of how urgent the situation feels. If you’re told a written quote “isn’t necessary” or “will slow things down,” treat that as a signal to pause.
6. What’s the Warranty on This Specific Repair?
Ask for both the parts warranty and the labor warranty on the specific repair being performed today, not the company’s general policy. Get the specific number of months or years in writing on the invoice.
7. Are There Other Options Besides This Repair?
For any repair over a few hundred dollars, ask whether there’s a lower-cost option, even if it’s a shorter-term fix, and what the tradeoffs are. A technician who can walk you through options rather than presenting one choice is generally more trustworthy.
8. How Long Will This Take?
A reasonable time estimate helps you plan your day and also reveals whether the technician has actually assessed the scope of work or is guessing.
Red Flags in How These Questions Get Answered
- Vague answers that avoid specifics (“it just needs it, trust me”)
- Irritation or defensiveness at being asked basic verification questions
- Pressure to decide before you’ve had a chance to think it over
- Refusal to put anything in writing before starting work
For a deeper look at these patterns, see our guide on red flags when choosing an AC repair company.
Our Service Area
Cooling By Design provides transparent, written-quote HVAC service from our Canoga Park headquarters across:
- Canoga Park
- Woodland Hills
- West Hills
- Chatsworth
- Reseda
- Northridge
- Granada Hills
- Porter Ranch
- Tarzana
- Encino
- Sherman Oaks
- Winnetka
- Calabasas
- Van Nuys
Frequently Asked Questions
Is it rude to ask a technician these questions?
Not at all. A reputable technician expects and welcomes these questions, since they’re the same standards any professional service should meet.
What if I don’t understand the technical explanation?
Ask the technician to explain it in plain terms — a good one can translate the technical finding into language you can follow without talking down to you.
Should I ask these questions even during an emergency repair?
Yes. The license and written-quote questions take only a minute or two, even under time pressure, and matter just as much in an emergency as a routine visit.
Does Cooling By Design answer these questions upfront?
Yes, on every visit. We explain our findings in plain language, confirm warranty coverage, and provide a written quote before any repair is authorized.
Work With a Technician Who Welcomes These Questions
Call (877) 702-6654 for a straightforward, written-quote diagnostic from a licensed Canoga Park HVAC contractor, or schedule online here. Email office@coolingbydesign.com. License #1148982. 21201 Victory Blvd, Suite 125, Canoga Park, CA 91303.