Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateHVAC Company in Union City, CA
HVAC work in Union City, CA usually means one of two jobs: keeping an aging furnace running safely in a 1950s tract home, or adding air conditioning to a house that was never built with it. The homes here are solid but they were framed before modern efficiency standards, and the marine air off San Francisco Bay does its own quiet damage to outdoor condenser coils and furnace flues. A repair that ignores those local conditions is a repair that will not last. You can reach us at (669) 800-4179 any hour, and a live person will answer.
Key takeaways:
- AC repair in Union City typically runs $150 – $650; furnace repair $150 – $700; a full AC installation $3,500 – $7,500.
- Every repair carries a written 365-Day Done Right Promise. If it fails within a year, we return and fix it at no charge.
- We write your price down before any work begins. It does not change at the door.
- Technicians are uniformed, background-checked, and trained on Carrier, Trane, Lennox, Rheem, Goodman, York, Daikin, Bryant, and American Standard.
Why Union City Homes Are Different
Union City is a town of ranch-style homes, most built between the 1950s and 1970s, and many still carry the galvanized ductwork and minimal insulation they left the developer’s site with. On the flatlands west of Mission Boulevard, we regularly open furnace cabinets to find flues rusted through from three decades of morning fog. That rust is not cosmetic; a perforated flue sends combustion gases where they do not belong. On the hillside side of town, the 1980s homes often have original condensing units whose fins are pitted from salt-tinged air rolling off the bay. The result is a city where a surprising number of system failures come from corrosion and stale airflow rather than a single failed part.
The other Union City reality is that many older houses were built without central air at all. The bay keeps most summer days mild, but when a heat wave pushes past 90°F, a house with no AC and single-pane windows becomes very uncomfortable very fast. That is why a large share of the full-system work here is retrofit installation: adding cooling to a home that has only a furnace, which often means upgrading the duct sizing and the electrical feed at the same time.
Styles & brands we work with
Our Main Union City Services
Most calls to our Union City dispatch are for AC repair during a heat spike or furnace repair when a system that has been silent all spring will not light. Both services get their own detailed Union City page, linked below.
AC Repair in Union City
When a Union City AC system fails, the usual suspects are salt-corroded condenser coils, blown capacitors, or a refrigerant leak that has been slowly draining pressure for years. We diagnose the specific fault, quote a written price, and in most cases complete the repair on the first visit. Coastal air here shortens the life of exposed aluminum, so we also check coil condition while we are there rather than just swapping the bad part and leaving. Full details are on our AC Repair in Union City page.
Furnace Repair in Union City
A Union City furnace that will not light is often a matter of a rusted flame sensor, a failed igniter, or a flue that has rotted through from decades of damp mornings. Some of these are quick parts swaps; a rusted flue is a safety repair that should never be delayed. Every furnace repair we perform leaves with a written 365-day guarantee, not a verbal promise. Read the specifics on our Furnace Repair in Union City page.
AC Installation in Union City
Adding central air to a Union City ranch home usually means more than setting a condenser in the side yard. The original ductwork is frequently undersized for cooling, and the old furnace may not support the airflow a new AC coil needs. We load-calculate the home, quote a fixed written price, and schedule the install for a set date. This is not same-day work, and it should not be. The full picture is on our AC Installation in Union City page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Union City
Our technicians are factory-trained on nine major residential brands, and on a given Union City street we might see Trane, Lennox, Goodman, and Rheem within four houses of each other. We keep common replacement parts stocked in local vans, which shortens most repair visits considerably. See our brands for the full training list.
See the difference
Before
After
Before
After
Before
AfterPricing for HVAC Company in Union City, CA
| Service | Typical range in Union City |
|---|---|
| AC repair (minor: capacitor, contactor, condensate clog) | $150 – $300 |
| AC repair (major: compressor, coil, refrigerant leak) | $350 – $650 |
| Furnace repair (minor: igniter, flame sensor, pressure switch) | $150 – $300 |
| Furnace repair (major: blower motor, control board, gas valve) | $350 – $700 |
| Furnace tune-up | $80 – $200 |
| AC tune-up | $80 – $200 |
| AC installation (basic single-zone system) | $3,500 – $5,000 |
| AC installation (larger home, higher-efficiency unit, duct upgrades) | $5,500 – $7,500 |
Prices in Union City tend to run toward the upper half of these ranges when a home still has original galvanized ductwork that must be modified, or when a marine-corroded component has damaged its neighbor. Whatever the job, the written price comes before any work begins, and that number is the number on the final invoice.
Neighborhoods We Serve in Union City
We cover all of Union City, from the flatlands neighborhoods west of Mission Boulevard up through the hillside subdivisions near the ridge. Typical response for repairs is same-day for morning calls, next morning for late-night calls.
- Decoto
- Alvarado
- Seven Hills
- Contempo
- Eden Landing
Service Area – Cities Near Union City
For homeowners right across the city line, we also serve Fremont, CA, Newark, CA, Palo Alto, CA, and Menlo Park, CA. Each city page covers the local housing stock and climate conditions unique to that area.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union City area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Union City
For furnace and AC repairs, we typically reach Union City homes the same day when you call before noon, and by the next morning for overnight calls. You will get a firm arrival window when you call, and a live person answers the phone 24 hours a day, 7 days a week. Call (669) 800-4179 and we will tell you exactly when a technician can be there.
Most full AC installations and furnace replacements in Union City require a mechanical permit from the city. We pull that permit as part of the installation and schedule the required inspection afterward. The permit cost is included in the written quote you receive before any work starts.
Yes. Every repair leaves with a written guarantee stating that if the repair fails within 365 days, we return and correct the work at no additional charge. It is not a verbal reassurance and it is not conditional; it is a printed document handed to you before the technician leaves your Union City home. Call (669) 800-4179 for a free estimate on any HVAC job.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Union City Customers Say
"Our upstairs never cooled right. He found the duct run was half blocked and the system low on charge, fixed both, and now the whole house is even. Explained every step."
- Deanna Boleyn"New AC and furnace. They gave me a written quote with a couple of options and no pressure. Showed up on the day they promised and the new system is so much quieter."
- Gloria Dunn"New mini split for the addition. Clean install, on time two days running, and the price matched the written quote to the dollar."
- Yvonne Prewitt