Boiler locks out intermittently
Flame signal, gas pressure or combustion air issues. Intermittent faults need a technician who will trend the readings rather than reset and leave.
HVAC-05HVAC· Union City, Alameda County
Boiler Service in Union City, CA
Commercial boilers heat the offices, schools, hospitals, hotels and multi-building properties across the East Bay, and they supply domestic hot water for restaurants, gyms and institutional kitchens. We service condensing and non-condensing hot water boilers, low-pressure steam boilers, and the pumps, valves, expansion tanks and controls around them.
- Sector
- Commercial · Industrial
- Coverage
- Union City, CA
- Scope
- Repair · PM · Install
- Residential
- Not offered
Boiler work is safety work. Every service visit includes combustion analysis and a check of the safety controls, and we will tell you plainly when a boiler should not be returned to service.
Boiler Service in Union City
Food processing facilities in Union City use boilers for process heat and sanitation, and commercial buildings use them for space heating. We service, tune and repair both, with the safety testing and documentation that boilers require.
Union City facilities include industrial and warehouse buildings in the western industrial area, food processing, beverage and packaging facilities, light manufacturing and assembly operations and more. See the full Union City service area page for everything we handle locally.
Scope of work
Boilers: what we handle
Equipment
01- Condensing hot water boilers with modulating burners
- Cast iron, copper-fin and firetube non-condensing boilers
- Low-pressure steam boilers for process and heating
- Domestic hot water boilers and storage tanks for commercial kitchens and institutions
- Circulating pumps, mixing valves, expansion tanks and air separators
- Boiler controls, outdoor reset, lead-lag sequencing and BMS integration
Repair & troubleshooting
02- Ignition failures: igniters, flame sensors, pilot assemblies and ignition modules
- Gas valve, pressure switch and combustion air problems
- Heat exchanger leaks, scaling and corrosion assessment
- Circulating pump seal, motor and coupling replacement
- Low water cutoff, aquastat, high limit and relief valve service
- Condensate neutralizer and drain issues on condensing boilers
Maintenance
03- Annual combustion analysis and burner tuning
- Safety control testing: low water cutoff, high limit, flame safeguard
- Heat exchanger inspection and cleaning
- Water quality testing and treatment coordination for hydronic loops
- Pump, valve and expansion tank inspection
- Documentation suitable for insurance and jurisdictional inspections
Installation & replacement
04- Boiler replacements, including high-efficiency condensing upgrades
- Domestic hot water system replacements for restaurants and institutions
- Pump, VFD and control retrofits for hydronic systems
- Gas piping and venting corrections on existing installations
Diagnostics
Common failures and what they mean
Short cycling and low efficiency
Oversized boilers, poor staging or failed outdoor reset. Correct controls often save more than the repair costs.
Noise in the piping
Air, scale or kettling in the heat exchanger. Kettling indicates scale buildup that shortens boiler life.
Not enough hot water in a commercial kitchen
Undersized recovery, failed mixing valves or scaled heat exchangers. We measure demand and recovery to solve it properly.
FAQ
Frequently asked questions
Dispatch
Request boilers in Union City
Tell us about the facility and the equipment. Attach a nameplate photo if you have one.
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Boilers near Union City
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