How often should a commercial boiler be inspected?

At least annually before heating season, with combustion analysis and safety control testing. High-use domestic hot water boilers benefit from semiannual service.

Do you replace boilers with condensing models?

Yes. Condensing boilers offer significant efficiency gains when the system design supports lower return water temperatures. We evaluate your system before recommending one.

Can you service steam boilers?

We service low-pressure steam boilers used for heating and light process. Let us know your boiler type and pressure when you call.

Commercial hydronic boiler plant in a mechanical room

HVAC-05HVAC· Fremont, Alameda County

Boiler Service in Fremont, 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.

Request Service Request a Maintenance Quote

Sector: Commercial · Industrial
Coverage: Fremont, 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 Fremont

Hydronic heating boilers in Fremont office buildings and schools, and process boilers in manufacturing and food facilities, both need scheduled combustion tuning, safety testing and repair. We service both, and we coordinate the permits and air district requirements that apply in Alameda County.

Fremont facilities include advanced manufacturing and ev/battery production facilities, semiconductor, cleanroom and biotech buildings with process cooling, large distribution and logistics warehouses along i-880 and auto mall parkway and more. See the full Fremont service area page for everything we handle locally.

Scope of work

Boilers: what we handle

Equipment

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

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

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

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

Fault 01

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.

Fault 02

Short cycling and low efficiency

Oversized boilers, poor staging or failed outdoor reset. Correct controls often save more than the repair costs.

Fault 03

Noise in the piping

Air, scale or kettling in the heat exchanger. Kettling indicates scale buildup that shortens boiler life.

Fault 04

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 Fremont

Tell us about the facility and the equipment. Attach a nameplate photo if you have one.

Name *

Company

Phone *

Email *

Service address

City

Facility type

Service needed

Equipment type

Preferred contact method

This is an emergencyEquipment down, temperature-critical, or power loss. For fastest response, please also call.

Description

Photo or file (optional, 15 MB max)Attach nameplate photo, equipment list or drawing

Commercial and industrial facilities only. We do not provide residential service.

Nearby

Boilers near Fremont

Also

Related services

Commercial rooftop mechanical plant with packaged HVAC units and chillers

HVAC-00

Commercial HVAC

Full mechanical service for rooftop units, air handlers, VRF, chillers and boilers.

View service

Air-cooled commercial chiller with condenser fans

HVAC-04

Chillers

Air-cooled, water-cooled and process chillers with pumps, towers and controls.

View service

Packaged rooftop HVAC unit on a commercial building roof

HVAC-03

Commercial Heat Pumps

Packaged, split and VRF heat pumps, including gas-to-electric conversions.

View service

Technician servicing commercial HVAC equipment on a rooftop

PM-00

Preventive Maintenance

Scheduled HVAC, refrigeration, electrical, switchgear and generator maintenance programs.

View service

Commercial electrical distribution panels and conduit

ELEC-01

Electrical Service & Repair

Fast troubleshooting of power loss, tripping circuits and failed equipment feeds.

View service

Dispatch · Commercial & Industrial

Boilers down? We dispatch to commercial and industrial sites.

(408) 370-0120

Request Service Request a Maintenance Quote