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Heating Repair in Union City, CA

The short answer

PrimeAir repairs gas furnaces and heat pumps in Union City homes and offers 24/7 emergency service. Bay Area Air District rules don't require you to replace a working furnace. If your furnace needs replacing, especially after 2029, we'll walk you through the options, including heat pumps.

When the furnace stops working on a cold night, you want a clear answer about what's wrong and what it will take to fix it. PrimeAir HVAC Repair Service handles heating repair for homes throughout Union City (ZIP 94587). We're based in Fremont, about 3 miles southwest, so reaching your neighborhood is a short drive. We repair gas furnaces, heat pumps, and the thermostats and ductwork that connect them. We explain what we find in plain terms before any work begins, and we offer 24/7 emergency service when heat can't wait until morning.

Heating Problems We Fix in Union City Homes

Many Union City furnaces sit unused for months and then run hard once the weather turns. That on-and-off pattern means problems often show up on the first cold evening of the season. Dust settles on burners and sensors, filters get forgotten, and parts that wore out last winter finally quit. These are the calls we handle most often:

  • Furnace runs but blows cool or lukewarm air
  • System won't start, or starts and shuts off after a few minutes
  • Pilot light or electronic ignition won't light
  • Banging, squealing, rattling, or grinding from the furnace or vents
  • Some rooms stay cold while others feel fine
  • Thermostat is unresponsive or doesn't match the actual room temperature
  • Heat pump stuck in defrost, frosted over, or not switching to heat
  • Burning smell that lingers past the first few minutes of the season

What Happens During a Repair Visit

Our technician starts by asking what you've noticed: when the problem started, what it sounds or smells like, and whether it comes and goes. Then we test the system step by step. That includes the thermostat, ignition and flame sensor, blower motor, filter and airflow, gas pressure, safety switches, and venting. On heat pumps, we also check refrigerant-side performance, the reversing valve, and defrost controls.

Once we find the cause, we explain it and tell you what the repair involves before we start. If a part needs ordering, we tell you that up front and make the system as safe and usable as possible in the meantime. Before leaving, we run the system through a full heating cycle to confirm it's working properly.

Repair or Replace? What Bay Area Air District Rules Mean for You

Many homeowners ask whether new Bay Area air quality rules force them to give up their gas furnace. They don't. The Bay Area Air District appliance rules don't require you to replace working equipment. They apply only when an existing furnace or water heater fails or is replaced. Repairing your current furnace is still a normal, allowed choice.

Timing matters for replacement planning, though. Under Air District Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when a furnace is replaced after that date. If your furnace is aging and needs frequent repairs, we can give you an honest read on whether to keep repairing it or start planning ahead.

If you're weighing a heat pump, note that the federal Energy Efficient Home Improvement Credit (25C) only covered qualifying heat pumps placed in service before December 31, 2025. It isn't available for new installations. Bay Area homeowners can still check BayREN and their local clean energy provider for current heat pump and electrification incentives. Amounts and availability change by funding cycle, so we confirm the current offer before including it in any estimate.

24/7 Emergency Heating Service

Some heating problems shouldn't wait, especially with young children, older relatives, or anyone with health concerns in the home. PrimeAir offers 24/7 emergency service for Union City and nearby communities, including Hayward, Newark, Pleasanton, San Leandro, and Menlo Park.

If you smell gas or your carbon monoxide alarm goes off, don't troubleshoot the furnace. Get everyone outside. Then call your gas utility or 911 from a safe distance. Once the utility or fire department has cleared the home, we can come out to diagnose and repair the equipment.

Quick Checks Before You Call

A few simple checks can sometimes restore heat or help us diagnose the problem faster:

  • Make sure the thermostat is set to Heat and above room temperature, and replace its batteries if it uses them
  • Check the breaker panel and the furnace power switch, which often looks like a light switch near the unit
  • Replace a dirty air filter, since a clogged filter can trigger the furnace's overheat shutoff
  • Make sure the furnace door panel is fully closed, because a safety switch stops the system if it's loose
  • Open supply vents and move furniture or rugs that block return grilles

More services in Union City

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What to expect

How a visit goes

  1. Diagnose First

    We track down why your system is acting up before suggesting a part or a replacement, so you're not paying to guess.

  2. Plain Explanations

    We tell you what's wrong, what your choices are, and what each one involves, in language that makes sense. Then you decide.

  3. Repair When It Makes Sense

    If your equipment can be fixed and still has life left, we'll say so. Bay Area appliance rules don't require replacing a system that works, and neither do we.

FAQ

Common questions

Do you provide heating repair throughout Union City?

Yes. We serve homes across Union City in ZIP code 94587. Our Fremont base is about 3 miles away, which makes Union City a quick trip for our technicians.

Will I be required to replace my gas furnace because of the new Air District rules?

No. The Bay Area Air District rules don't require replacing working equipment. They apply only when a furnace or water heater fails or is replaced. If your furnace can be repaired, you can keep using it.

What changes in 2029?

Under Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard. For most homes, that means a heat pump becomes the practical choice when a furnace is replaced after that date.

Can I still get a federal tax credit for a heat pump?

No. The federal 25C credit only covered qualifying heat pumps placed in service before December 31, 2025. You can check BayREN and your local clean energy provider for current incentives, and we'll confirm what's available before quoting it.

Do you repair heat pumps as well as furnaces?

Yes. We diagnose and repair both gas furnaces and heat pumps, along with the thermostats and ductwork connected to them.

Do you offer emergency heating repair at night or on weekends?

Yes. PrimeAir offers 24/7 emergency service. If you smell gas or a carbon monoxide alarm sounds, leave the house first and call your gas utility or 911 before calling us.

Need Heating or Cooling Help?

Tell us what your system is doing, and we'll set up a visit to find the cause and talk through your options. For urgent breakdowns, we offer 24/7 emergency service.

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