If you really care about choosing a quality hvac contractor, we’re here for you. Here’s your access to the best hvac contractors serving Union City including 94587. These heating and air conditioning experts provide water heater repair and indoor air quality, and they also work on furnace repair, commercial air conditioning and heating system installations. For 22 years we’ve conducted the most accurate ratings and deepest research of local contractors, so you’ll be confident in choosing.
Last Updated Sep 30, 2025
148,521 people sourced companies in Heating & Air Conditioning
16,331 Verified Heating & Air Conditioning Customers Surveyed
Perfect Star Heating, Cooling, & Electrical is a locally owned family business serving Alameda and Contra Costa Counties. The company’s motto, “We Kee...
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Main Services
Heating & Air Conditioning
Air Quality - Indoor
Additional Services
Heating & Air Conditioning, Ductless Mini-Splits, Indoor Air Quality, Electrical, Solar
Brands
Lennox, Daikin, Amana, American Standard, Bryant, Carrier, Honeywell, Trane
AIS Heating & Air Conditioning installs and repairs all types of HVAC systems for residential and commercial clients throughout the Greater Bay Area. ...
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Main Services
Heating & Air Conditioning
Air Quality - Indoor
Additional Services
Heating and Air Conditioning Installation, Service, and Maintenance, Indoor Air Quality, Energy Audits, Heat Pump Systems, Heat Pump Water Heater Maintenance and Repair
Hassler offers full HVAC services including maintenance, repairs, water heaters, ductless, full system replacements, and heat pump conversions. Starti...
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Main Services
Heating & Air Conditioning
Home Energy Auditor
Additional Services
Central Ducted Heat Pump, Ductless Mini-Split Heat Pump, Water Heater (Standard, Tankless, Heat Pump, Electric Resistance), Furnace, and A/C Installations and Repairs, Home Energy Assessments and Home Energy Score (HES) Assessments, Energy Upgrade Measures (Building Shell)
Brands
Bosch, Carrier, Mitsubishi, Navien, Rheem Water Heaters
Service Champions is a premier provider of home services in Northern California. The company's expertise includes heating, cooling, plumbing, electric...
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Main Services
Air Duct Cleaning
Heating & Air Conditioning
Air Quality - Indoor
Insulation
Additional Services
Furnaces and Air Conditioners, Ductwork and Insulation, Electrical, Plumbing, Water Filtration, Air Filtration
Hometown Heating & Air Conditioning, originally founded in 2012, is a family-owned and operated business led by Brian Waskow and his daughter, Jessica...
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Main Services
Air Quality - Indoor
Heating & Air Conditioning
Additional Services
Installation, Maintenance & Repair of HVAC Systems, Electrostatic Filtration, Safety Inspections & Energy Audits, Smoke & Carbon Monoxide Detectors
Brands
American Standard, Bryant, Carrier, Honeywell, Lennox, Payne, TLC, Trane
Moore Mechanical Heating & Air Conditioning provides a wide range of HVAC services for residential and commercial clients in Alameda and Contra Costa ...
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Main Services
Heat - Radiant
Heating & Air Conditioning
Additional Services
Heating & Air Conditioning System Replacements & Repairs, Radiant Heating, Ductless Mini Split Repairs & Installations, Ductwork Design Services, Repairs & Installations, Home Performance Evaluations, Annual HVAC Maintenance Programs, Commercial HVAC Repairs & Installations, Indoor Air Quality Diagnostics & Upgrades, Ventilation System Repairs & Installations, Whole House Fan Installations, Attic Ventilation Systems, Air Purification Systems, VRF Systems, Combustion Appliance Zone (CAZ) Tests, Residential & Commercial Heat Pump Water Heaters, Backup Residential Generator Installations, Electrical Panel Upgrades, Including Span Panels, New Residential Electrical Circuit Installations, Including Hot Tubs, Pool Pumps & Electric Vehicle Charging Stations, Generators & Generator Transfer Switches
Brands
Carrier, Rheem, Mitsubishi, York, Ruud, Bryant, Bradford White, SANCO2, Harvest Thermal, Noritz, Navien, American Standard, A. O. Smith
Diamond Certified Hvac Contractors Serve These Union City ZIP Codes
94587
Diamond Certified Hvac Contractors In Union City
Diamond Certified hvac contractors serving Union City are rated an average of 4.5 out of 5 stars based on 5223 reviews of 78 rated hvac contractors. Diamond Certified hvac contractors in Union City Avg. Star Rating.
Union City was founded in 1909, and today, your 87,496 neighbors enjoy outdoor sports, cheese tasting, biking, winery tours and mountaineering. Union Citians use Diamond Certified HVAC contractors for water heater repair, heating system installations, commercial air conditioning, air conditioning, mini splits, and more.
Frequently Asked Questions for Heating & Air Conditioning in Union City, CA
Q: What are clients of Diamond Certified hvac contractors saying about contractors in Union City, CA?
Q: What are some of the most popular brands that Diamond Certified hvac contractors use when working with Union City residents?
A: Diamond Certified hvac contractors use top-quality brands like Payne, Maytag, Heil, American Standard and Rheem.
Q: What types of AC tune ups do hvac contractors offer?
A: HVAC contractors offer a variety of commercial air conditioning options, including split systems, packaged rooftop units, cooling towers, chillers, and VRF systems. Split systems are typically used for smaller spaces, while larger spaces often require packaged rooftop units, cooling towers, or chillers. VRF systems offer greater energy efficiency and zoning capabilities, making them ideal for larger commercial spaces.
Q: Can Diamond Certified hvac contractors work with Carrier products and similar items so I can get water heater repair in Union City?
A: Yes, Diamond Certified hvac contractors can work with Carrier products and similar items for water heater repair in Union City.
Q: What did people search for when they wanted to find the best quality hvac contractors in Union City?
A: Commercial Air Conditioning
Heating System Installations
Water Heater Repair
Heating
Energy-Efficient Hvac
Union City is our home and we love it! Here you’ll find the best spots to revisit, the Union City events schedule, local social media links, stories of our Union City area unsung heroes and much more. Connect with your neighbors and share what you love about our hometown. Plus, join us as a Union City Diamond Certified Preferred Member (always free).
This aerial shot showcases Union City’s suburban neighborhoods and surrounding fields. Photo: Rob
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