Carrier profile · USDOT 3973619 · MC-1485630 · Updated Jun 13, 2026
CERTIFIED REFRIGERATION & MECHANICAL LLC
DBA COMFORT SYSTEMS|NORTHWEST REFRIGERATION SERVICES|METROPOLITAN FOOD SERVICE EQUIPMENT|DONS SHEET METAL
125 power unitsMADISON, WI50/100
NO OPERATING AUTHORITYMC-1485630 NO AUTHORITY
Operations & Lanes
Where this carrier actually runs, revealed by roadside-inspection geography over the last 24 months — not where they claim to operate, shown as state-level inspection density.
Inspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
MADISON, WI
Density
fewermore