Our Union Landing furnace and AC went in together in the 80s. Replace both at once?

Often it makes sense, since the two tend to fail close together, but not always. If the condenser needs only a capacitor and the furnace is sound, a repair buys time. We check both and give you the repair and replacement numbers side by side.

Why is the upstairs in our Mission Hills house so much warmer in summer?

Mission Hills two-story homes came with returns that were undersized from the start and long duct runs to the upstairs rooms. We measure the return side, the static pressure and the upstairs airflow, and tell you what a repair can fix and what needs duct changes.

Do you work on AC in the older Alvarado homes?

Yes. We service add-on systems on older furnaces as well as the newer equipment in Mission Hills. ADRIUM holds EPA 608 Universal certification for any repair that opens the refrigerant circuit.

AC REPAIR · UNION CITY

AC Repair · Union City, CA

AC repair in Union City, where 1980s furnace and condenser pairs are wearing out within a few seasons of each other.

$99 diagnostic (credited toward the repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

AC Repair in Union City

AC Repair in Union City.

Union City is one ZIP, 94587, with equipment from a couple of distinct generations. Alvarado and Decoto carry the mid-century stock, and the big tract wave around Union Landing went in through the 1980s. Where a furnace and condenser were installed together back then, they tend to fail close together, and many of those pairs are reaching that point now.

Mission Hills, up above 880, is newer and larger, and two-story homes there bring their own summer trouble: an upstairs that will not cool, returns that were undersized from day one, and two thermostats arguing with each other. We diagnose the failed part first, write a quote before any work starts, and the $99 diagnostic is credited toward the repair.

Common repairs we handle.

Original 1980s condenser and furnace failing as a pair. When one half of an original pair fails, the other is often close behind. We check the condenser's compressor draw and charge along with the furnace blower and coil, so you can decide whether to repair one piece or replace both together.
Mission Hills upstairs that never cools. An upstairs fed by long attic runs gets the least cool air, and undersized returns make it worse. We measure the temperature at the upstairs registers, check the returns and the blower speed, and look at the attic ducts before suggesting zoning.
Two thermostats fighting over one system. When a two-story house runs one system with dampers, a failed damper or a confused zone board can leave one floor chasing the other. We test the dampers and the board and set up the thermostats so each floor gets its own call.
Add-on condenser on an older Decoto furnace. Cooling added to an older Decoto or Alvarado home relies on the furnace blower to move air across the indoor coil. A worn blower motor or a clogged return lets that coil freeze. We check airflow first, then the charge, and fix the cause.

Pricing and warranty

What it costs. What we stand behind.

$99

Diagnostic visit. Credited toward the repair.
1 yr

Parts and labor warranty on completed repairs. In writing before we start.
CSLB

#1136642. Bonded and insured. We file warranty paperwork when applicable.

Nearby cities

AC Repair in neighboring cities.

More cities

AC Repair across our service area.

FAQ

AC Repair in Union City questions, answered.

Our Union Landing furnace and AC went in together in the 80s. Replace both at once?

Often it makes sense, since the two tend to fail close together, but not always. If the condenser needs only a capacitor and the furnace is sound, a repair buys time. We check both and give you the repair and replacement numbers side by side.
Why is the upstairs in our Mission Hills house so much warmer in summer?

Mission Hills two-story homes came with returns that were undersized from the start and long duct runs to the upstairs rooms. We measure the return side, the static pressure and the upstairs airflow, and tell you what a repair can fix and what needs duct changes.
Do you work on AC in the older Alvarado homes?

Yes. We service add-on systems on older furnaces as well as the newer equipment in Mission Hills. ADRIUM holds EPA 608 Universal certification for any repair that opens the refrigerant circuit.

Pricing HVAC repair starts with a $99 diagnostic, credited toward the approved repair, which makes the service call $0 with a completed repair. Considering a new HVAC system? The in-home estimate visit is free.

Credentials Owner-operated by Andrew · CSLB #1136642 · EPA #1279674151528 · BBB A+ · Repairs carry a 1-year warranty; new-system coverage: 10 years manufacturer parts + 2 years labor. Warranty and callback details →

Need ac repair in Union City?

Tell us what is broken. We will quote it.