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50+ Years
experience
Your Trusted Plumbing & HVAC Experts in Sunnyvale, CA
A & A Plumbing has served the South San Francisco Bay Area since 1947, establishing itself as the oldest plumbing company in Sunnyvale, California. Our family-owned business specializes in residential, commercial, and industrial plumbing services while also offering HVAC system installation and maintenance. With working owners actively involved in daily operations, we prioritize personalized service without sales representatives, delivering professionally prepared proposals directly from our management team. Our expertise spans simple repairs to complex engineering projects, including bathroom remodeling, geothermal heating systems, and backflow prevention services.

We maintain factory-trained technicians, comprehensive warranties, and industry certifications through organizations like IGSHPA and ACCA. Committed to quality, we guarantee clean job sites, senior discounts, and maintenance contracts for both residential and commercial clients. As a licensed, bonded, and insured company, we proudly serve San Mateo and Santa Clara Counties, maintaining memberships with the Better Business Bureau and Sunnyvale Chamber of Commerce.
Services
Plumbing Repairs HVAC Installation Geothermal Systems Ductless Heating Backflow Testing Sewer Inspections Water Heater Repair Bathroom Remodeling Leak Detection Maintenance Contracts
Details
  • Year established: 1947
Highlights and features
  • Family-owned since 1947 with working owners managing daily operations
  • Factory-trained technicians for all plumbing and HVAC equipment
  • No salespeople direct proposals from management team members
  • Senior discounts and commercial maintenance contracts available
  • Certified geothermal system designers with IGSHPA and ACCA credentials
Associations and certifications
  • Better Business Bureau
  • Sunnyvale Chamber of Commerce
Services
Plumbing Repairs
We handle all plumbing emergencies from leaky faucets to major pipe bursts. Our licensed technicians respond promptly to fix water heater issues, clogged drains, and gas line problems. We guarantee clean workspaces and use only code-compliant materials for lasting repairs.
Geothermal Systems
Our certified team designs and installs geothermal heating systems that reduce energy costs by 50-70%. We handle vertical and horizontal loop installations with IGSHPA-certified expertise. Systems include energy-efficient heat exchange technology and qualify for utility rebates.
HVAC Maintenance
We service all brands of heating and air conditioning equipment. Our maintenance plans prevent breakdowns through seasonal tune-ups and filter replacements. We offer emergency repairs for furnaces, boilers, and ductless systems.
Backflow Testing
Certified technicians perform city-mandated backflow prevention testing and repairs. We service commercial and residential properties to protect drinking water from contamination. Documentation provided for city compliance.
Sewer Inspections
Using advanced camera technology, we diagnose sewer line issues without excavation. Our hydrojetting service clears blockages and tree root intrusions. We provide detailed video reports and repair recommendations for main sewer lines.
Questions
What areas do you service?
We serve Sunnyvale, Palo Alto, Mountain View, San Jose, and surrounding communities in San Mateo and Santa Clara Counties.
Do you offer emergency plumbing services?
We operate Monday-Friday 8am-4:30pm and can schedule urgent repairs during business hours. After-hours emergencies receive priority scheduling.
Are your technicians certified?
All technicians are factory-trained with certifications in geothermal systems, backflow prevention, and HVAC installation from recognized industry organizations.
What payment methods do you accept?
We accept cash, checks, and credit cards. A service charge applies for credit card payments to maintain competitive pricing.
Do you provide warranties?
We offer comprehensive warranties covering both labor and manufacturer defects. If equipment fails within warranty periods, we'll repair or replace it at no additional cost.
Can you help with geothermal system rebates?
Yes, our certified installers help customers qualify for energy efficiency rebates and tax incentives for geothermal system installations.