Fleet typeIdentity
Asset-based
125 power units. Brokers price each fleet type apart.
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
Observed fleet · trailing 24 mo daily
125Power units
Self-reported · MCS-150
—Trailers seen
None observed · 24 mo
—Avg age (yr)
Not yet decoded
Click to see how we scored it
Load decision · FMCSA snapshot · Jun 13, 2026
Limited record
Not enough federal record to assess. Verify authority and insurance directly.
USDOT registration inactive
Watch · 4
USDOT registration inactiveThe USDOT record is flagged inactive — the carrier may not be authorized to operate.No active operating authorityNo active common, contract, or broker authority is on file for a for-hire carrier.No inspection history despite active fleetAn established carrier reporting 125 power units has no roadside inspections — a common shell/paper-carrier signal.MCS-150 census data outdatedThe biennial MCS-150 update is 3.8 years old; fleet/mileage figures may be unreliable.
In good standing · 0
Nothing flagged.
USDOT registration33 yr registered
No active authorityInsurance (BIPD)— unknown
No filing on recordVehicle OOS · 24-mo—
No inspections · 24 moCrashes · fatal—
No crash recordVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersDecoding
—
Not yet decoded
Identity stabilityStable
3 yr unchanged
Same registration since 2022 — no chameleon / reincarnation signal.
Loading full carrier record…
Verification summary
CERTIFIED REFRIGERATION & MECHANICAL LLC (USDOT 3973619) is unrated by Vektor because the carrier's FMCSA record does not contain enough evidence for a safety score as of Jun 13, 2026.
The carrier has no active for-hire operating authority per FMCSA L&I as of Jun 13, 2026.
It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available as of Jun 13, 2026.
The carrier received 0 roadside inspections in the last 24 months — 0 vehicle-level and 0 driver-level, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.
It reports 125 power units and 125 drivers in its most recent MCS-150 filing dated Oct 21, 2022.
It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.
02
Frequently asked
What is CERTIFIED REFRIGERATION & MECHANICAL LLC's USDOT number?
CERTIFIED REFRIGERATION & MECHANICAL LLC's USDOT number is 3973619, and its motor carrier number is MC-1485630.
Is CERTIFIED REFRIGERATION & MECHANICAL LLC authorized to operate?
As of Jun 13, 2026, CERTIFIED REFRIGERATION & MECHANICAL LLC is inactive in the FMCSA register with common, contract, broker operating authority on file.
How big is CERTIFIED REFRIGERATION & MECHANICAL LLC's fleet?
CERTIFIED REFRIGERATION & MECHANICAL LLC operates 125 power units and 125 drivers per its most recent MCS-150 filing.
Where is CERTIFIED REFRIGERATION & MECHANICAL LLC based?
CERTIFIED REFRIGERATION & MECHANICAL LLC is based in MADISON, WI.
03
Similar carriers in Wisconsin
Comparable carriers operating in Wisconsin
