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Business Details
50+ Years
experience
Expert Plumbing, HVAC & Geothermal Solutions in Sunnyvale
A & A Plumbing has served Sunnyvale and the South San Francisco Bay Area since 1947, establishing itself as one of the region's oldest and most trusted plumbing companies. Our working owners actively oversee daily operations, ensuring personalized service and long-term reliability. We specialize in residential, commercial, and industrial plumbing, including complex engineering, design, and diagnosis, without employing salespeople to maintain transparency. Customers receive professionally prepared proposals directly from management, with post-service cleanup guaranteed. Our expertise extends to HVAC systems, geothermal heating/cooling, and backflow testing, supported by factory-trained technicians and comprehensive warranties.

We prioritize preventive maintenance contracts, senior discounts, and tailored solutions for real-estate and property management accounts. Our commitment to quality is reflected in our 70-year legacy, BBB membership, and state licensing. We handle everything from minor repairs to full-scale bathroom remodeling, emphasizing clean workspaces and customer recognition. Our geothermal systems reduce energy costs by 50-70%, demonstrating our dedication to innovative, environmentally responsible solutions.
Services
Plumbing Repairs HVAC Installation Geothermal Systems Ductless A/C Backflow Testing Bathroom Remodeling Sewer Inspection Water Filtration Commercial Plumbing Maintenance Contracts
Details
  • Year established: 1947
Highlights and features
  • We have over 70 years of experience in residential and commercial plumbing.
  • Our working owners provide direct oversight and personalized service.
  • We offer comprehensive warranties exceeding industry standards.
  • We specialize in energy-efficient geothermal heating and cooling systems.
  • We guarantee clean workspaces and post-service follow-up.
Associations and certifications
  • Better Business Bureau
Services
Plumbing Repairs
We handle all plumbing repairs, from leaky faucets to sewer line replacements. Our technicians use advanced video inspection tools to diagnose issues accurately. Customers receive transparent pricing and guaranteed workmanship for both residential and commercial properties.
Geothermal Systems
Our geothermal installations reduce heating and cooling costs by 50-70%. Systems use underground loops to transfer heat efficiently, with options for vertical or horizontal installation. We provide design, installation, and Title 24 compliance for environmentally conscious homeowners.
HVAC Services
We install and service furnaces, water heaters, and ductless Mr. Slim units. Our systems improve indoor air quality and energy efficiency. Commercial clients benefit from tailored solutions for forced-air and hydronic heating systems.
Backflow Testing
Certified technicians perform backflow prevention testing and repairs for Sunnyvale and San Jose. This service ensures compliance with local regulations and protects potable water supplies from contamination in residential and commercial settings.
Bathroom Remodeling
We handle complete bathroom renovations, including fixture replacement and layout redesign. Services include low-flow toilet installations and water-efficient upgrades. Projects include plumbing, tiling, and finishing touches for modern, functional spaces.
Questions
What areas do you serve?
We serve Sunnyvale, San Jose (West and South), Palo Alto, Mountain View, and surrounding South Bay communities.
Do you offer emergency plumbing services?
We operate during regular business hours Monday-Friday and do not provide after-hours emergency services.
Are your technicians certified?
Yes, our team includes factory-trained technicians and certified backflow prevention specialists for city compliance.
What payment methods do you accept?
We accept credit card payments with applicable service charges, checks, and cash for completed services.
Do you provide warranties?
All work includes warranties exceeding industry averages, covering both labor and manufacturer defects for fixtures and appliances.
Can you help with geothermal system design?
Yes, we offer complete geothermal system design, installation, and Title 24 compliance documentation for residential properties.