US · FMCSA ACTIVE
HARTFORD HEATING AND AIR CONDITIONING
dba JOHN THIELMANN AND SON HEATING AND AIR CONDITONING
New Berlin, WI 53151-5524 · DOT 3238687
Registry record
Source FMCSA · as of 2026-07-08
Fleet size
5
power units
Activity
road freight carrier
private licence
In operation since
2019
24 drivers
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