CaptiveAire Hood Repair
CaptiveAire is the #1 US commercial kitchen ventilation manufacturer, and most LA restaurants built or remodeled since 2010 run their kitchen hoods. Our techs handle CaptiveAire hood repair on ND-2, SND-2, BD-2, ND-2WI island, A-Line makeup air, and self-cleaning systems across LA County, Orange County, Ventura, San Bernardino, and Riverside, same-day commercial kitchen hood service, $120 diagnostic fee waived with the repair.
- Factory trained on CaptiveAire ECP, VFD, and ModBus
- $120 commercial diagnostic, waived if you authorize the repair
- 5 filials: West Hollywood · Los Angeles · Thousand Oaks · Pasadena · Irvine
- NFPA 96 aware, our work leaves documentation your AHJ inspector will accept
Where we work
Local branches across Southern California
Eight branches covering Los Angeles, Orange, Ventura, San Bernardino, and Riverside counties. Same-day routing on calls before 1 PM.
Why CaptiveAire repair is its own skill
Every week our techs are on a CaptiveAire kitchen hood somewhere in Los Angeles. The density in Koreatown, Downtown, Arts District, Hollywood, and the Beverly corridor is real, CaptiveAire has been the default spec for new LA builds and chain remodels for about fifteen years. That means most commercial kitchen hood repair calls land on ND-2 Wall Canopy or SND-2 Low Ceiling units, a lot of BD-2 back-shelf hoods in the newer fast-casuals, and a steady stream of A-Line makeup air units feeding the kitchen exhaust behind or above the hood. When the exhaust fan slows down, smoke and odors roll out, and the cooks call us.
The skill isn't cleaning hoods or swapping motors, it's the Electrical Control Package, the VFD drives on ModBus, the MAU interlock, and the self-cleaning hot-water spray circuit. That's where generic HVAC trucks start guessing. At Same Day Appliance Repair Los Angeles we don't guess. Our guys carry the OIM fault lists, the factory wiring schematics, and the stock parts that fit ECP panels: pressure switches, 24V relays, hot-water solenoids, baffle filters, contactor blocks, and replacement VFDs for common HP sizes. If your hood is down, we want to be on site that day, fault read, diagnosis confirmed, quote in your hands before we leave.
CaptiveAire models we service
If it came off a CaptiveAire truck, our techs work on it. Most LA kitchens run one of these:
ND-2 Wall Canopy
Flagship. Type I exhaust-only, ETL listed to UL-710 / ULC-710, rated for 450 / 600 / 700°F cooking surface temperatures. The most common CaptiveAire hood in Los Angeles restaurants. Self-cleaning option available.
SND-2 Low Ceiling
Short-back variant for lower ceilings common in retrofitted LA buildings. Same UL-710 listing, 400 / 600°F ratings. Tricky to service because clearance is already tight, we bring low-profile ladders.
BD-2 Back-Shelf
Compact canopy for lower-temp line equipment. Shows up in fast-casual, coffee, and ghost kitchens across LA and OC.
ND-2WI / NDI Island
Single Island (ND-2WI) and Double Island V-Bank (NDI) for open-kitchen layouts. Lots of these in Beverly Hills and Newport Beach restaurants where the line is visible to guests. Harder to service with walk-ups on both sides.
A-Line Makeup Air Unit
Direct-fire MAU that replaces the air your exhaust hood pulls. Where the balance problem lives. We service the burner, pressure switches, interlock relay, and evaporative cooling where it's installed.
Self-Cleaning Systems
Daily hot-water spray cycle that cleans the plenum and a portion of the duct. Available on ND-2, SND-2, and BD-2 variants. Solenoid, water-supply valve, and timer circuit are the usual repair points.
Electrical Control Package (ECP)
The brain. Ecp-M series with VFD drives on ModBus, interlock logic, fan start / stop, damper control, and Demand Control Ventilation (DCV) where it's specified. Most of our diagnostic time lives here.
UL-300 Fire Suppression
Ansul R-102 integration is the standard on CaptiveAire hoods in LA. We don't recharge suppression systems (that's a licensed fire-protection contractor) but we coordinate with your fire vendor when a repair involves the appliance shutoff relay or fuel-interlock valve.
Common CaptiveAire failures, kitchen hood troubleshooting we see in LA
These are the calls that come in, week after week. Pattern recognition shortens diagnostic time and keeps the labor bill reasonable. Most commercial kitchen hood troubleshooting on CaptiveAire hardware lives in the controls, not the stainless body.
VFD ModBus fault after a power event
Scenario: the kitchen comes back up after a brownout or a hard shutoff and the exhaust fan throws a VFD fault (commonly fault 8, sometimes an address-conflict error). The drive can't talk to the control panel. On CaptiveAire ECP panels every VFD is a slave on the ModBus network with a unique address. After a reset, two drives can wake up claiming the same address, or the communication settings on one drive corrupt. Our process: read the fault at the drive, pull the OIM fault list, check the physical DIP-switch address, and verify baud rate and parity. Nine times out of ten the fix is an address correction and a clean power-cycle, no part replacement.
MAU Interlock Fault won't clear
The makeup air unit refuses to fire. Usually the exhaust fan is running and the cooks think the system is fine, but the MAU is locked out because the interlock signal isn't confirmed. Three suspects in order of frequency: pressure switch on the exhaust side tripped or out of calibration, loose wire on the interlock relay, or a control board that lost its reference after a voltage spike. We carry replacement pressure switches (standard ranges) and 24V interlock relays on the truck.
Low airflow / poor capture / smoke rolling out of the vent hood
The cooks complain that smoke is staying in the kitchen and the dining room is getting hazy. Classic negative-pressure problem in the vent hood. Either the kitchen exhaust fan is under-performing (baffle load, clogged filters, motor degradation, VFD limiting Hz) or the makeup air isn't matching exhaust volume (MAU down, damper stuck, evaporative cooling suction wrong). Santa Ana winds make this dramatically worse, on a hot, dry September day a borderline system tips into full failure and the hood fan can't overcome the back-pressure. We show up with a manometer, read static pressure at the hood plenum and at the MAU, and rebalance.
Self-cleaning solenoid stuck / hot-water cycle fails
On ND-2, SND-2, and BD-2 self-cleaning models, the daily hot-water spray should run at the scheduled time and clean grease from the plenum. When it stops running, the two usual causes are a stuck hot-water solenoid (scale builds on the plunger in LA hard water within a few years) or a failed timer circuit on the controls board. We test the solenoid at 24V DC, verify incoming hot-water pressure, and swap the solenoid if the plunger's seized.
Hood fan motor degradation (kitchen hood fan repair)
The hood fan still runs but airflow has dropped and the sound is different. On belt-drive CaptiveAire exhaust fan assemblies, bearings are the usual root cause, a squirrel cage running out of balance loads one bearing and it goes. On direct-drive hood fans we check the motor amp draw under load against the nameplate. Honest call from us: if the motor is original from a 2014–2017 install and the bearings are shot, replace the motor. Rebuilding old fan motors on a commercial vent hood rarely pays, parts cost chases labor cost, and within a year you're back on the roof.
Controls keypad unresponsive / lights out
The Ecp-M touchpad or switch panel goes dead. Easiest check: 24V transformer on the control board. Next: ribbon cable to the keypad. If both test fine, the control board itself is suspect. We source CaptiveAire controls through factory channels so the replacement part is a firmware-matched swap, not an aftermarket substitute that needs to be reprogrammed.
Signs your CaptiveAire hood needs repair
Half the calls we get start with a manager who noticed something off but didn't know it was the hood. The other half start with smoke pouring into the dining room. Here's what to watch for before a full failure:
- Smoke or odors lingering in the kitchen or drifting into the dining room during heavy cooking.
- Hood fan running louder than it used to, grinding, whining, or a harmonic vibration that wasn't there last quarter.
- Reduced airflow at the filter baffles, you can feel it when you stand under the hood.
- Kitchen exhaust fan won't start after a power blip, or a VFD fault code on the ECP display.
- MAU not firing, kitchen goes negative, front door pulls hard, line cooks complain about the heat.
- Self-cleaning cycle skipping, you don't hear the hot-water spray at the scheduled time.
- Lights out in the hood canopy, could be bulbs, could be the control board.
- Grease dripping from hood edges, baffles are saturated or the drain trough is clogged.
- Damper stuck, you can hear it but the airflow doesn't change.
None of these get better on their own. Commercial vent hood and kitchen exhaust fan problems cascade, a tired motor stresses the VFD, a failed interlock kills the MAU, and the next hood cleaning inspection flags you for non-compliance with NFPA 96. Catching it early keeps the repair bill under $500 instead of $2,000.
NFPA 96 and LA County compliance, what our repair work leaves behind
Our scope is repair, not certified hood cleaning. But every CaptiveAire call in LA lives next door to compliance. NFPA 96 sets the cleaning-frequency requirement that LA County Fire enforces:
- Monthly, solid-fuel cooking (wood, charcoal).
- Quarterly, high-volume grease: charbroilers, wok stations, 24-hour operations.
- Semi-annually, moderate-volume restaurants.
- Annually, low-volume (churches, day camps, seasonal).
Our repair reports document what was changed, part numbers, and date, the paperwork your AHJ (LA Department of Building and Safety, or your city's Fire Prevention Bureau) wants if an inspector asks about recent service. When a repair touches the fire-suppression interlock or fuel shutoff, we coordinate directly with your licensed fire-protection vendor so the UL-300 system stays compliant.
CaptiveAire repair pricing, what LA restaurants actually pay
Parts and labor vary, but our diagnostic fee is fixed and the common repair bands are predictable:
| Service | Typical Range | Notes |
|---|---|---|
| Commercial diagnostic | $120 | Flat, waived if repair is authorized same visit |
| Pressure switch (MAU or exhaust) | $180 – $280 | Common stocked part |
| Hot-water spray solenoid | $160 – $240 | Self-cleaning model ND-2 / SND-2 / BD-2 |
| 24V interlock relay | $120 – $180 | Quick swap, on truck |
| Contactor block | $140 – $220 | ECP panel |
| VFD replacement (1–3 HP common sizes) | $650 – $1,250 | Parts only; labor separate |
| Fan motor (belt or direct drive) | $450 – $950 | Size-dependent; labor separate |
| Controls board (Ecp-M) | $700 – $1,400 | Factory-sourced, firmware-matched |
| Labor rate | $150 / hr | 1-hour minimum after diagnostic |
Replacement quotes for whole assemblies (new hood, new MAU, new fan package) are free and come as a written scope, we won't push you to replace if repair is the better call. Our techs tell it straight: if the body's sound, we fix it.
Service areas, where our CaptiveAire calls come from
Central LA
Koreatown · Downtown · Arts District · Mid-City · Beverly Blvd · Melrose · Hollywood · West Hollywood
Westside
Beverly Hills · Century City · Brentwood · Santa Monica · Venice · Marina del Rey · Culver City
San Fernando Valley
Sherman Oaks · Studio City · Van Nuys · Encino · Tarzana · Woodland Hills · Burbank · Glendale · North Hollywood
San Gabriel Valley
Pasadena · South Pasadena · San Marino · Alhambra · Monterey Park · Arcadia
South Bay / Long Beach
Long Beach · Torrance · Redondo · Manhattan Beach · El Segundo · Carson · San Pedro
Orange County
Irvine · Newport Beach · Costa Mesa · Anaheim · Huntington Beach · Tustin · Santa Ana · Orange · Laguna
Ventura County
Thousand Oaks · Westlake Village · Ventura · Oxnard · Camarillo · Simi Valley
Inland Empire
Riverside · San Bernardino · Ontario · Rancho Cucamonga · Corona · Moreno Valley · Fontana
Other commercial hood brands we service
CaptiveAire is market leader, but we service the rest of the commercial hood manufacturers LA restaurants run, each with its own quirks:
CaptiveAire repair, frequently asked
Do you work on CaptiveAire ND-2 hoods?
Yes. ND-2 Wall Canopy is the CaptiveAire flagship and the model we see most often across Los Angeles. We also service SND-2 Low Ceiling, BD-2, ND-2WI Single Island, and NDI Double Island V-Bank, plus A-Line makeup air units.
How much does CaptiveAire hood repair cost in Los Angeles?
Kitchen hood repair cost varies with the failure. Minor repairs, pressure switch, interlock relay, contactor, hot-water solenoid, land in the $250–$450 range including parts and an hour of labor. VFD or fan motor replacement runs $850–$2,000 installed. Control-board swaps $1,100–$1,800. Our $120 commercial diagnostic is waived if you authorize the repair on the same visit. No hidden trip charges, no upsells for stuff you don't need.
My exhaust fan throws a VFD fault after a power outage, what's happening?
On CaptiveAire Electrical Control Packages, the VFD talks to the main panel over ModBus. A brownout or hard power reset can scramble the slave address or trigger an address-conflict fault. Often a proper power-down and address reset clears it. If not, the drive itself is suspect.
How do I know if I need hood repair or a full replacement?
Honest answer from our techs: if the stainless body is sound and you're chasing motor, VFD, pressure switch, or controls issues, repair every time. CaptiveAire hoods are rated for decades. We only recommend replacement when the body is rusted through, the listed fire-suppression system is non-compliant after renovation, or the kitchen layout has changed enough that the original hood is undersized.
Do you handle emergency kitchen hood repair in LA?
Yes. Commercial kitchen downtime costs money every hour, so we prioritize same-day dispatch when a restaurant is losing service. Heaviest coverage is during normal business hours across our five-county footprint; after-hours emergency visits are available but carry a surcharge. Call the branch closest to you and tell the dispatcher it's a kitchen hood emergency.
What's an MAU Interlock Fault?
The makeup air unit is interlocked with the exhaust fan, it won't fire up heat or cooling unless the exhaust is confirmed running. If the interlock fault is thrown, usually it's a bad pressure switch, loose wiring at the interlock relay, or a control board that lost its reference. We carry pressure switches and relays on the truck.
Do you do hood cleaning too, or just repair?
We do repair, not certified hood cleaning. NFPA 96 grease cleaning is a separate licensed trade with its own permits and AHJ paperwork. If you need both, we coordinate directly with your hood-cleaning vendor so the certified cleaning and our repair work align on timing and documentation.
Do you handle NFPA 96 cleaning frequency compliance for LA County?
Our repair work leaves documentation your AHJ will accept. LA County Fire follows NFPA 96 cycle requirements, monthly for solid-fuel cooking, quarterly for high-volume grease (charbroil, wok), semi-annual for moderate, annual for low. We can coordinate with your hood-cleaning vendor so repair work and certified cleaning align.
What does diagnostic cost?
Commercial diagnostic is $120 flat, waived if you authorize the repair that same visit. No hidden trip charges inside our LA, OC, Ventura, San Bernardino, or Riverside service area.
Which LA areas do you cover?
All five counties. Heaviest CaptiveAire density we see is Koreatown, Downtown LA, Arts District, Hollywood corridor, Beverly Blvd restaurant row, Sherman Oaks and Studio City in the Valley, Glendale and Pasadena, Long Beach, and the Irvine / Newport Beach restaurant belt in Orange County.
CaptiveAire down? Call the branch closest to your restaurant.
Same-day in LA, Orange County, Ventura, San Bernardino, and Riverside. Commercial diagnostic $120, waived with repair.