Best HVAC Companies in Union City, CA (2026)

Looking for a trusted hvac company in Union City, CA? We've compiled 10 verified hvac service providers in the Union City area. Average rating: 4.7 stars across 307 customer reviews. Compare hvac companies, read real reviews, and get free quotes from local pros.

10 contractors307 reviews4.7★ avg
#1
f
25 NorCal Score
5★★★★★(1 reviews)

1684 Decoto Rd, Union City, CA 94587, USA

#2
Union City Plumbing Water Heaters Services
41 NorCal Score
5★★★★★(64 reviews)

4568 Niland St, Union City, CA 94587, USA

★★★★★Jayanand Asok Kumar

Hot water in our house was finishing up faster than usual in the recent weeks, until suddenly one day it was almost not available. We have small kids in the ho...

#3
Faith Furnace & Duct Cleaning Service
25 NorCal Score
5★★★★★(1 reviews)

34480 Valley Oaks Loop, Union City, CA 94587, USA

★★★★★RL PF

They are fantastic! Faith Furnace has been used by my family for over 15 years.

#4
Smart Repair
37 NorCal Score
5★★★★★(38 reviews)

2175 Decoto Rd Apt 182, Union City, CA 94587, USA

★★★★★Aleksandr Kolchin

Great experience with Smart Repair! They fixed my refrigerator quickly and professionally. The technician arrived on time, clearly explained what the issue was,...

#5
Equinox Air Conditioning
37 NorCal Score
5★★★★★(42 reviews)

32433 London Ct, Union City, CA 94587, USA

★★★★★Reynan Zapanta

I had a broken air conditioner that needed urgent attention, and Equinox Air Conditioning did an exceptional job fixing it! Their team arrived promptly, diagnos...

#6
Lunar Air Systems
36 NorCal Score
4.9★★★★★(37 reviews)

32932 Oakdale St, Union City, CA 94587, USA

★★★★★Carmen Yu

I decided to replace my central air system with mini-split in each room. It’s a true pleasure working with James from Lunar Air Systems on my project. I can con...

#7
TRUSTED HEATING, COOLING & CONSTRUCTION
35 NorCal Score
4.8★★★★★(24 reviews)

4236 Solar Cir, Union City, CA 94587, USA

★★★★★saravanan

I used this company to remodel my bathroom, and I’m very happy with the results. Fred and his team completed the job on time, and the quality of their work was ...

#8
Azer Appliance & HVAC Repair
40 NorCal Score
4.7★★★★★(83 reviews)

2323 Royal Ann Dr, Union City, CA 94587, USA

★★★★★Ketan Shah

Few months back, I had got by refrigerator repaired by Azer as my freezer’s evaporative cooler failed and there was ice/frost on the coils. He repaired the issu...

#9
All Refrigeration Heating
24 NorCal Score
4★★★★(3 reviews)

607 Appian Way, Union City, CA 94587, USA

#10
Western Allied Mechanical
27 NorCal Score
3.6★★★★(14 reviews)

33210 Central Ave, Union City, CA 94587, USA

★★★Mike Steczo

The technician that showed up was adept and friendly. The issue is that he was there for less that 90 minutes and we were charged for three hours of time. Reque...

What Union City Customers Say About Local HVAC Pros

★★★★★5/5

Hot water in our house was finishing up faster than usual in the recent weeks, until suddenly one day it was almost not available. We have small kids in the house, so needed repai...

Jayanand Asok Kumarre: Union City Plumbing Water Heaters Services
★★★★★5/5

Today, July 3, my water heater suddenly stopped working. I called the number listed on the water heater and reached Khan from Union City Plumbing Water Services, who originally ins...

Maria Mre: Union City Plumbing Water Heaters Services
★★★★★5/5

They are fantastic! Faith Furnace has been used by my family for over 15 years.

RL PFre: Faith Furnace & Duct Cleaning Service
★★★★★5/5

Great experience with Smart Repair! They fixed my refrigerator quickly and professionally. The technician arrived on time, clearly explained what the issue was, and completed the r...

Aleksandr Kolchinre: Smart Repair

HVAC Services Available in Union City, CA

Local hvac companies in Union Cityoffer a range of services. Here's what you can expect:

How to Choose a HVAC Company in Union City

Finding a reliable hvac company in Union City, CA doesn't have to be stressful. Here are the key things to look for when hiring a hvac service provider:

  • Check licensing and insurance — California requires hvac companies to carry proper insurance. Verify their credentials before hiring.
  • Read customer reviews — Look for hvac services in Union City with consistently high ratings (4+ stars) and detailed reviews from real customers.
  • Get multiple quotes — Compare at least 2–3 hvac companies in Union City to ensure fair pricing. Be wary of quotes significantly below market rate.
  • Ask about guarantees — Reputable hvac companies stand behind their work with satisfaction guarantees or warranties.
  • Local expertise mattersUnion City is known for diverse suburban city between fremont and hayward with 1970s–2000s family homes. Choose a hvac company familiar with local property types and conditions.

Frequently Asked Questions About HVAC in Union City

How much does AC repair cost in Union City?+
AC repair in the Union City area typically costs $150–$650 depending on the issue. Common fixes like refrigerant recharge run $200–$400, while compressor replacement can be $800–$2,000. We provide upfront pricing before any work begins.
How quickly can you come for an AC emergency?+
We offer same-day and emergency AC repair across Union City, CA. During peak summer months, our typical response time is 2–4 hours for emergency calls in the Union City metro area.
How much does a new AC cost in Union City?+
A new central AC system in the Union City area typically costs $4,500–$15,000 installed, depending on home size, efficiency rating, and brand. Heat pump systems eligible for SMUD rebates can reduce your out-of-pocket cost by $1,500–$3,000.
What SMUD rebates are available for AC replacement?+
SMUD currently offers up to $3,000 in rebates for qualifying heat pump installations. Additional federal tax credits of up to $2,000 may also apply for high-efficiency systems. We handle all rebate paperwork for you.
Are heat pumps worth it in Union City?+
Heat pumps are excellent for Union City's climate. They provide efficient cooling in summer and heating in winter, and with SMUD rebates up to $3,000 plus federal tax credits up to $2,000, the payback period is typically 5–8 years.
How much do heat pumps save on energy bills?+
Heat pumps can reduce heating costs by 30–50% compared to gas furnaces and cooling costs by 20–30% compared to standard AC units. SMUD customers see average annual savings of $400–$800.

Are you a HVAC company in Union City?

Join NorCal Repairs — get listed free or upgrade to premium for exclusive leads.

Sign Up Today

Get a Free HVAC Quote in Union City

Describe your project and we'll connect you with a licensed hvac contractor.

1
2

Get Your Free Quote

Related Services in Union City

HVAC Contractors in Nearby Cities