HVAC Permit in Milwaukee, Wisconsin

Frequently asked questions

Do you need an HVAC permit in Milwaukee?

Milwaukee requires an HVAC permit for furnace and central air conditioning work: the Does It Need a Permit page answers "Yes" to both "Air conditioner" and "Furnace", the fee schedule prices heating units by BTU input and air conditioning and refrigeration units by ton, and DNS runs a dedicated 1&2 Family HVAC Checklist field inspection report that carries a permit number field and covers the furnace, gas line, venting, combustion air, condensate line, dedicated electrical breaker, the A/C condensing unit and the distribution ductwork. The exemption that makes this conditional sits on the homeowner list: replacement of mechanical appliances, with air conditioners named alongside dishwashers, garbage disposals, washing machines and clothes dryers, and separately the installation of a window air conditioner, do not require a permit. The electrical side of an HVAC job is not covered by the HVAC permit: a dedicated breaker and a local service disconnect are inspected, and all other electrical work must be permitted by a licensed electrician. Always confirm with the City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center before starting.

How much does an HVAC permit cost in Milwaukee?

HVAC Permit Fees, excerpted in the fee schedule from MCO 200-33-23: heating, incinerator units and wood-burning appliances are "$55 per unit not exceeding 150,000 BTU's of input. For each additional 50,000 BTU's or fraction thereof, an additional fee of $11 shall be charged"; air conditioning and refrigeration units are "$55 per unit not exceeding 3 tons. For each additional ton or fraction thereof, an additional fee of $6 shall be charged"; heating and air conditioning distribution systems are "$2 per 100 square feet of conditioned area" with a $50 minimum; unit, room and radiant heaters are $15 per heater with a $35 minimum. A $25 processing fee applies to each HVAC permit issued, plus the 1.6% IT and Training Surcharge (As of January 1, 2025). See the official fee schedule for current amounts.

Where do you apply for an HVAC permit in Milwaukee?

You can apply through the Milwaukee permit portal or contact the City of Milwaukee Department of Neighborhood Services (DNS), Permit and Development Center directly. The links are listed on this page.

Can a homeowner pull an HVAC permit themselves in Milwaukee?

Under Wisconsin law (Wis. Stat. 101.654(1)(a) and (1)(b); Wis. Admin. Code SPS 305.31(1), SPS 320.09(9)(a)2., 3. and 4.; Wis. Stat. 101.65(1m) and (1r); Wis. Stat. 101.862(4)(a); Wis. Stat. 145.06(4)(a)): A Wisconsin homeowner may pull the permit and do the work on their own dwelling. The general rule is that nobody may obtain a building permit for a one- or two-family dwelling without a DSPS dwelling contractor certification plus a dwelling contractor qualifier credential, but the statute exempts an owner of a dwelling who resides or will reside in the dwelling and who applies for a building permit to perform work on that dwelling. Neither the statute nor the implementing rule places any cap on how often that exemption may be used, and Wisconsin has no counterpart to Florida's one-year resale restriction. The trade-off is a disclosure: the permit issuer must have the owner sign a statement warning that if the owner hires a contractor who is not bonded or insured, the owner may be held liable for injury or property damage arising from the work and may be unable to collect damages from that contractor. Trade licensing carries its own homeowner carve-outs, both defeasible by local ordinance: a residential property owner may do electrical wiring on premises the owner owns and occupies as a residence, and a property owner may do plumbing work in a one-family building owned and occupied as the owner's home. Confirm how Milwaukee applies this before you apply.