Working in Commercial Kitchens Reference

Why this matters

Commercial kitchens (restaurants, schools, hospitals, food service) differ significantly from residential. Equipment is heavy-duty, downtime expensive, regulations stringent. The tech who handles commercial kitchen work well builds significant B2B revenue. This is the field card.

Commercial kitchen environment

Characteristics:

• High-volume usage
• Multiple equipment types
• Strict health codes
• Demanding owner (downtime costs)
• Different regulations than residential
• Often 24/7 operation

Common equipment

HVAC:

• Make-up air units (replace exhausted air)
• Kitchen exhaust hoods
• Grease ducts
• AC for dining + back-of-house
• Refrigeration (separate from comfort cooling)

Plumbing:

• Multiple fixtures
• Grease traps
• High-volume water heaters
• Floor drains
• Specialty (mop sink, prep sink, hand sink, 3-compartment)

Electrical:

• Higher loads (commercial equipment)
• 3-phase often
• Multiple panels
• Cooking equipment

Refrigeration:

• Walk-in coolers + freezers
• Reach-in units
• Ice machines
• Refrigeration only specialty often

Safety + sanitation requirements

Health code:

• Local health department
• Routine inspections
• Specific equipment requirements
• Material requirements

Foodborne illness prevention:

• Temperature critical
• Cross-contamination
• Proper hand washing
• Equipment cleaning

Fire suppression:

• Hood + duct fire suppression
• Required by code
• Inspected annually
• Pull station + auto-activation

Common service requests

Cooler / freezer not cooling:

• High urgency (food loss)
• Often refrigeration specialist
• Sometimes simple diagnostic

Drain backed up:

• Affects multiple stations
• Affects food safety
• Quick response needed

Equipment failure (oven, fryer, etc.):

• Specific to commercial cooking equipment
• Specialty knowledge often

HVAC issue:

• Comfort cooling for dining area
• Make-up air for kitchen
• Different from residential

Hood / exhaust issue:

• Fan failure
• Damper issue
• Filter clogged

Plumbing leak:

• Common in high-water environment
• Grease trap issues
• Fixture failures

Working with commercial cooking equipment

Specialty equipment:

• Fryers (gas OR electric; oil + heat)
• Ovens (commercial; convection, combi)
• Ranges (heavy duty)
• Grills (charcoal, gas, flat-top)
• Steamers
• Refrigeration

Diagnosis:

• Similar principles to residential
• Heavy-duty components
• Often manufacturer-specific
• Manuals critical

Replacement parts:

• Specialty (not residential)
• Distributor relationships
• Sometimes slow shipping

Refrigeration emergency

When walk-in cooler / freezer fails:

Immediate:

• Diagnose quickly
• Communicate timeline to manager
• Sometimes food relocation needed
• Loss may be significant

Repair path:

• Diagnose
• Order part if needed (rush)
• Temporary fix if possible
• Coordinate with operations

Health code:

• Some temperature thresholds = food disposal
• Restaurant may need to close
• Critical service

Hood + exhaust systems

Components:

• Hood (canopy over cooking)
• Exhaust fan (above OR remote)
• Grease ducts (insulated, fire-protected)
• Make-up air unit (replaces exhausted)
• Fire suppression integrated

Common issues:

• Fan failure
• Belt break
• Bearing wear
• Damper stuck
• Filter clogged
• Cleaning frequency inadequate

Regulations:

• Cleaning frequency (varies by use)
• Fire suppression inspection annual
• Grease management

Grease trap maintenance

Function:

• Separates grease from wastewater
• Required commercial kitchens
• Periodic pumping
• Maintenance log

Failure:

• Grease in drain line (clogs)
• Smell
• Health code violation

Service:

• Specialty service often
• Regular pumping schedule
• Cleaning between

Code requirements

NFPA 96: standard for ventilation control + fire protection of commercial cooking operations IMC Chapter 5: exhaust systems Local health code: specifics ASHRAE 154: kitchen ventilation

Reference for specific requirements.

Pricing commercial work

Commercial vs residential:

• Usually higher rates
• Premium for after-hours
• Maintenance contracts common
• Volume justifies investment

Maintenance contracts:

• Regular scheduled work
• Predictable revenue
• Stronger customer relationship

Working during operation

Strategies:

• After-hours when possible (premium)
• Mid-day quieter periods
• Coordinate with manager
• Don't disrupt service

Customer's priority:

• Stay open
• Health code compliance
• Customer comfort

Working in food prep areas

Sanitation:

• Don't contaminate
• Clean hands / gloves
• Don't leave tools
• Cover food before working overhead
• Wash work area after

Customer's standards:

• Higher than residential
• Food contact zones
• Cross-contamination prevention
• Document if needed

Health inspections

Annual / semi-annual:

• Inspector visits
• Equipment + food handling
• Cleanliness
• Documentation

Your work supports compliance.

Specific industries

Restaurants:

• Standard commercial kitchen
• Sometimes 24/7
• Health code compliance

Schools:

• Cafeteria volume
• Health + safety priority
• Often institutional buyer
• Different scheduling

Hospitals:

• Highly regulated
• Patient food safety
• Long-term contracts
• Specialty equipment

Nursing homes:

• Similar to hospitals
• Different regulations
• Long-term contracts

Hotels:

• Often kitchen + room service + bar
• 24/7 operations
• Premium customer (loyal hotel chains)

Catering:

• Off-site kitchen
• Different equipment focus

Commercial vs residential mindset

Commercial customer:

• Downtime = revenue loss
• Reliability > price
• Long-term relationships
• Maintenance contracts standard

Residential customer:

• Inconvenience
• Price-sensitive
• One-time often
• Service over decades

Tech approach differs.

Customer's manager / chef

Decision-makers:

• Manager (operations)
• Chef (cooking equipment)
• Owner (financial)
• Building manager (facility)

Sometimes multiple; coordinate.

Documentation

For commercial work:

• Detailed records
• Equipment serial numbers
• Service history
• Compliance documentation
• Customer signatures
• Photos

Required for health + insurance + sometimes legal.

Equipment age

Commercial equipment:

• Heavy-duty; long life
• 10-20+ years common
• High-volume use though
• Maintenance critical

Older equipment:

• Sometimes obsolete (parts unavailable)
• Replacement consideration
• Customer's budget vs operations

When equipment fails catastrophically

Multiple equipment OR major equipment:

• Restaurant may close temporarily
• Emergency response
• Backup equipment (rental sometimes)
• Coordinate quickly

Working safely

Hot kitchen:

• Hot equipment + open flames
• Heat protection
• Burn risk
• Ventilation

References

• NFPA 96 (Commercial Cooking Operations)
• IMC Chapter 5 (Exhaust Systems)
• ASHRAE 154 (Kitchen Ventilation)
• NSF / ANSI standards (food equipment)
• Local health department codes
• Manuall internal: Common Cooling Diagnosis, Working With General Contractors