Serving Union City, CA

Local contractor in 94587

In Union City, CA 94587, the warm summer nights often prompt us to focus on efficient air conditioning solutions. We’ve completed about six projects recently, addressing the cooling needs of local homes, including a notable job where we cleaned a condenser coil, replaced a thermostat, and adjusted refrigerant levels for a homeowner experiencing discomfort during a late 85-degree evening. One satisfied customer praised our owner and technician, James Haden, for his outstanding service and honest advice on maintaining their AC unit. With the combination of warm weather and older homes, regular HVAC maintenance is essential to ensure comfort and efficiency throughout the year.

Union City, CA · 94587 6 local projects 3 reviews 5 avg. rating
See our recent work

Recent projects near 94587

Real work completed for homeowners in Union City and the surrounding areas.

Revived comfort with a late-night AC repair: cleaned condenser, replaced thermostat, and adjusted refrigerant.

Air Conditioning Repair

Late 85 degree night. Cleaned condenser coil. Replaced thermostat. Adjusted refrigerant.

Heat-pump Installation

Heat-pump Installation

A home in need of efficient heating and cooling solutions allowed us to install a Carrier Infinity Communicating Heat Pump in the attic, complete with new ductwork. This advanced system enhances indoor comfort while effectively managing energy usage for the residential space. The setup included UV lights to improve air quality, ensuring a healthier environment for the family.

Furnace And Air Conditioning Repair

Furnace And Air Conditioning Repair

A failed limit switch caused the fan to run continuously. We performed a thorough inspection and identified the faulty component, replacing it promptly to restore optimal function to the HVAC system. This ensured the furnace operated efficiently and met the residential heating needs.

Furnace Inspection

Furnace Inspection

The smoke alarm had been triggered, indicating a potential issue. We conducted a thorough inspection of the HVAC system to identify the source of the problem. After diagnosing the situation, we performed necessary repairs and maintenance, ensuring the furnace operates safely and efficiently. The system was restored to proper working condition, giving peace of mind to the homeowner.

No heat? We quickly diagnosed and repaired the furnace issues, restoring warmth and comfort to the home.

Furnace Repair

No heat was being experienced in the residence due to issues with the furnace's board and inducer motor. We promptly provided 24-hour emergency service, conducting a thorough inspection to identify the problems. After diagnosing the faulty components, we proceeded with the necessary repairs and maintenance to restore warmth and comfort to the home.

What Union City homeowners are saying

A 5β˜… average rating from 3 verified reviews.

Sagar Chokshi
Aug 20, 2025

Don’t need to look any further for your HVAC needs. James is the real deal! He is extremely knowledgeable and will provide you the best service. I had the pleasure working with him for an entire furnace replacement to an electric heat pump in attic, and couldn’t be happier with the outcome. Doesn’t matter if it’s small or large projects, he is super passionate about his craft and really wants to do a good job.

Jay Huang
Feb 2, 2025

Our HVAC furnace blower fan won't stop even the thermostats are off. After several self inspection, it turned out the issue is so complex that I have to call HVAC technician. The reason we hire Lunar Air are: 1. James is working 24/7, and jump in to a call right away before he visit for diagnosis. 2. His inspection and diagnosis are so detailed that itself worth price just for knowing where the issue is. Debugging is much harder than solving it. 3. James is amazing person if you like to learn about HVAC system, since he could always provide info on "ideal system" v.s. "temporary fix", which I appreciate. 4. Very transparent on pricing, cost of parts ...etc. Turn out his service is totally fair given how much work/time he put in. 5. Lunar Air is 10 mins away from my house, James show up quickly and easy to schedule time. Above and beyond: 1. Besides fixing the issue, we also found a few losing cables and screw inside the HVAC and zoning system. James fixed them right away. 2. His passion to root cause and educate customers are rare find. Advise for anyone considering Lunar Air: 1. Be open to work with James, and learn a thing or two about his suggestions. It may sound intimidating sometimes due to the cost of system upgrade or replace. 2. James could dice very deep on explaining issues. But, do your homework on basic HVAC system. Things may look easy as normal user, but do not expect a simple fix of a HVAC issue. 3. Other may charge you a ton to replace bigger parts, but I felt James's transparency and integrity could actually save you time and money eventually. Really happy to have James fix our heater issue. I would be happy to recommend others to hire Lunar Air!

Adriano Dela Cruz
Jul 5, 2024

Jams Haden the owner and technician did an outstanding service on my AC and the pricing was very reasonable. He gave great advice on maintaining service to keep my unit running well preventing expensive future repairs. He was very honest and never tried to sell you more than what you only needed. This owner/technician is very trustworthy when you need someone to service or repair your AC. I absolutely recommend him to anyone…. Outstanding customer service and. Even work late hours or early mornings to get the job done. Thank you Mr James Haden!!!!! Semper Fi devil dog !!!!!!

Also serving nearby areas

We provide the same trusted service to all of the surrounding ZIP codes.