Homeowner & Facility Resources
Frequently Asked Questions
How do you calculate your pricing?
We charge by the job, not by the hour, providing you with a fixed, upfront estimate before work begins.
Are you a licensed contractor?
Yes, we are fully licensed and insured, operating under CSLB license #1089255.
How often should I service my AC?
We recommend a professional tune-up once per year to ensure efficiency during Fresno's peak summer heat.
What does "Commercial Strong" mean?
It means we apply industrial-grade engineering and precision to every project, regardless of size.
Do you handle residential plumbing?
Yes, we provide full residential plumbing including leak detection, drain cleaning, and water heaters.
Can you repair industrial HVAC units?
Yes, we specialize in commercial mechanical contracting and industrial-scale heating and cooling systems.
Why is my water bill suddenly high?
This often indicates a hidden slab leak; we use non-invasive technology to pinpoint these issues.
Do you install tankless water heaters?
Yes, we install both high-efficiency tankless and traditional water heater systems.
How long has D & S Mechanical been in business?
We have been family-owned and operated in Fresno since 1993.