HVAC help in Oshkosh
Oshkosh is on the west shore of Lake Winnebago where the Fox River enters it, and it's the Winnebago County seat.
It's home to UW Oshkosh and hosts the EAA AirVenture fly-in every summer.
Older Oshkosh homes may still heat with boilers, so mention it in your request.
Oshkosh at a glance: city in Winnebago County · ZIP codes: 54901–54904, 54906.
Oshkosh is in Winnebago County, which the 2021 IECC climate-zone county list places in Climate Zone 5A. Either way, heating systems here run hard from roughly October through April.
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HVAC permits in Oshkosh
Oshkosh requires a permit for heating and air-conditioning work, though window-mounted air-conditioning units don't need one.
Work can't start until the permit is issued and paid.
Source: City of Oshkosh: Permits. Checked November 9, 2026. Confirm current rules with the city before work starts.
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Oshkosh HVAC FAQ
Do you serve all of Oshkosh?
We connect homeowners across Oshkosh with local HVAC contractors. Coverage depends on which contractors are available that day.
Can I get same-day furnace repair in Oshkosh?
Sometimes. Same-day depends on contractor schedules, especially during cold snaps. Send a request and we'll check.
Does it matter if I use natural gas or propane?
Yes. Tell us your fuel type (natural gas, propane, oil, electric) so we can match you with a contractor who works on your system.
Who will I be talking to?
Fox Valley HVAC is a referral service. When you send a request, we connect you with an independent local HVAC contractor who serves your area. We don't do the repair work ourselves.
I smell gas. What do I do?
Leave the house right away and call 911 or your gas utility from outside. Don't use switches or phones inside. Call an HVAC pro after the utility says it's safe.