Automotive
Auto facilities run two MEP worlds under one roof: a brand-quality showroom out front and an equipment-dense, code-classified service shop in back — lifts, compressors, exhaust extraction, wash bays, and EV loads that grow every year. We deliver construction-ready HVAC, electrical, and plumbing engineered around the bay layout and built to clear plan check.
Showroom Comfort, Shop-Floor Engineering.
A repair garage isn't an ordinary building: the floor is a classified location, the air carries CO and NO2, and the electrical service has to absorb EV chargers that can push it over its limit. We engineer code-compliant exhaust and ventilation to IMC 404, classified-area wiring to NEC 511, and EV infrastructure to NEC 625 — while the showroom out front reads as a brand-quality retail space. The result is one coordinated set, sealed by the licensed engineer of record on your project.


Service-Bay Ventilation & Exhaust
The air engineering that keeps a repair shop safe, correctly classified, and through plan check.
- Repair-garage mechanical exhaust at 0.75 cfm/sf with CO/NO2 demand control per IMC 404
- UL 2075-listed CO and NO2 sensors interlocked to stage and modulate the exhaust fans
- Vehicle source-capture: tailpipe extraction and overhead-rail exhaust drops at the bays
- Ventilation sized to support de-classifying service areas where the AHJ allows
- Make-up air tempered and balanced to the exhaust so doors don't whistle in winter
- Showroom and office comfort zoning kept independent of shop air
Shop Electrical & Classified Wiring
Power, lighting, and code-classified wiring built around the bay layout and NEC 511.
- Classified-location wiring per NEC 511 — service floor up to 18 in. and pits below grade
- Wiring methods and GFCI protection for service receptacles, tools, and droplights
- Lift, compressor, tire-machine, and shop-equipment power coordinated to the equipment list
- Showroom and display lighting designed to brand illuminance standards
- Site, canopy, and pylon-sign lighting and circuiting
- Power and motor controls for vendor-supplied car-wash equipment
EV Charging Infrastructure
Charging capacity sized to NEC 625 and planned with the utility before the service maxes out.
- Level 2 and DC fast-charge sizing with EVSE treated as continuous load (125%) per NEC 625
- EV load calculations per NEC 220.57 reconciled against the existing service
- Automatic load management (ALMS) to add chargers without upsizing the service
- Utility-coordinated service, transformer, and switchgear capacity for fast-charge plazas
- Make-ready conduit and stub-outs for the chargers you'll add later
- Customer-charging and fleet-depot layouts with metering
Service Plumbing & Car-Wash Water
Compressed air, shop drainage, and reclaim systems engineered for the waste stream.
- Compressed-air distribution to the bays and tool drops
- Oil/sand interceptors and trench drains sized to the shop and AHJ
- Multi-stage car-wash reclaim with oil-water separation and RO/ozone polishing
- Wash-tunnel pit drainage, reclaim pump pits, and fresh-water make-up
- Lube and fluid-distribution piping coordination
- RPZ backflow protection on make-up and equipment connections
Coordination & Specialty Scope
Clear lines around the true specialty scope, with the conventional MEP designed cleanly around it.
- Conventional MEP coordinated tightly to the shop, wash, and bay layouts
- Spray booths and paint-mix rooms: booth-listed explosion-proof wiring by the booth vendor; we serve general power, lighting, exhaust make-up, and connections
- Fuel-dispensing hardware and NFPA 30A tank/piping scope by the fuel-system specialist; we design the balance of systems
- BIM coordination of vehicle exhaust, compressed air, lift foundations, and EV conduit
- Energy compliance to IECC / ASHRAE 90.1 across the conditioned showroom, office, and shop zones
Quick answers about how we deliver design support for this sector.
Yes — this is core scope, not something we hand off. We design repair-garage exhaust at 0.75 cfm/sf with CO/NO2 demand control per IMC 404, and we treat the classified locations per NEC 511 — the service floor up to 18 inches and below-grade pits. Where adequate mechanical ventilation lets the AHJ de-classify an area, we design the ventilation to support that, which simplifies the wiring methods and lowers cost.
Yes. We design Level 2 and DC fast-charge infrastructure to NEC Article 625, treating EVSE as a continuous load at 125% and running the EV load calculation per NEC 220.57 against your existing service. Where chargers would push the service over its limit, we apply automatic load management (ALMS) to add capacity without an expensive service upgrade, and we coordinate transformer and switchgear capacity with the utility for fast-charge plazas.
Those carry genuine specialty scope. The spray booth's listed, explosion-proof internal wiring comes from the booth manufacturer, and the fuel-dispensing tanks and piping fall under NFPA 30A and a fuel-system specialist. We design the conventional MEP around both — general power, lighting, exhaust make-up air, drainage, and equipment connections — so their packages integrate cleanly into our set behind your seal.
Yes. We engineer multi-stage water reclaim with oil-water separation and RO/ozone polishing, the wash-tunnel pit drainage and reclaim pump pits, and the fresh-water make-up, plus the power and motor controls for the vendor-supplied wash equipment. We also handle wash-bay humidity and exhaust so the building doesn't sweat.
That's the point of the package. The showroom is a brand-quality retail environment — comfort zoning, display lighting to the manufacturer's standards, and a clean envelope — while the shop behind it is a classified, exhaust-driven industrial space. We design them as one coordinated MEP set so the two worlds don't fight each other, and the licensed engineer of record on your project reviews and seals the whole thing.
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