HVAC in Madison, WI.
William J Drum appears in Wisconsin license records as an HVAC contractor based in Madison, WI. The record lists a HVAC Qualifier license (#1497297) with status “Active”. The listed expiration date, 2026-08-16, has passed, so check the state board before hiring.
Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.
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William J Drum is an HVAC contractor based in Madison, Wisconsin. Their license classification is HVAC Qualifier.
Yes. William J Drum holds Wisconsin licensing authority license #1497297 (status: Active). Verify the current status on Wisconsin licensing authority before hiring.
William J Drum is based in Madison, WI 53713.
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The fastest way is to post your project on Bidroom — William J Drum and up to 2 other verified HVAC contractors in Madison can bid on it, and every quote includes itemized pricing + a written scope of work.
Not yet. This listing was created from public Wisconsin license records but hasn't been claimed by the owner. The license info above is from official records, but the business hasn't confirmed its services, hours, or current availability with us yet.
Contractor vetting checklist · Cost guide · Look up this license at the state board