Do I Need a Permit to Replace a Furnace in Arizona?
Furnace replacement permit requirements. Even same-model swaps need a mechanical permit. What inspectors check.
Yes — even a like-for-like furnace swap requires a mechanical permit.
Why Even a Swap Needs a Permit
Furnace replacements involve gas connections, venting, and combustion air — all safety-critical systems. Most jurisdictions require a mechanical permit to verify the new furnace is properly vented, has adequate combustion air, and the gas connections are leak-free. This is true even for exact same-model replacements.
High-Efficiency Conversions
Upgrading from a standard-efficiency (80%) to high-efficiency (90%+) furnace changes the venting requirements: standard units use metal B-vent, high-efficiency units use PVC/CPVC. The old metal vent chase may need to be sealed. A condensate drain line is also required for high-efficiency units.
What Inspectors Check
The final inspection covers: gas piping and drip leg, venting type and clearances, combustion air supply (especially in confined spaces), condensate drain (high-efficiency units), thermostat operation, and CO detector presence on every level.
Bundled with AC?
If you're replacing both the furnace and AC unit at the same time, one mechanical permit typically covers both. The inspector will check the AC refrigerant lines, electrical disconnect, and condenser pad in addition to the furnace items.
Yes, always. The permit is $40-$75 and your HVAC contractor handles it. One final inspection. Don't skip it — CO poisoning from bad venting is real.
Permit fees by city in Arizona
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
99 rows
| Permit fee | Source | |
|---|---|---|
| Apache Junction | $150 flatVerified | Mechanical / HVAC Permit → |
| Avondale | $90.00Verified | Mechanical / HVAC Permit → |
| Benson | Same Building Permit Fee valuation table as other trades: $47.00 (valuation $1-$1,000) scaling up to $6,712.00 + $4.40 per additional $1,000 above $1,000,000Verified | Mechanical / HVAC Permit → |
| Bisbee | Same valuation table as new construction ($78 to $20,730+ scaling by valuation tier), plus 65% Plan Review FeeVerified | Mechanical / HVAC Permit → |
| Buckeye | $109Verified | Mechanical / HVAC Permit → |
| Bullhead City | $26.48Verified | Mechanical / HVAC Permit → |
| Camp Verde | $47.00 ($1-$500); $47.00 + $4.25 per additional $100 to $2,000; $108.00 + $16.50 per additional $1,000 to $25,000; $476.00 + $12.50 per additional $1,000 to $50,000; $784.00 + $9.25 per additional $1,000 to $100,000; $1,217.00 + $7.25 per additional $1,000 to $500,000; $3,997.00 + $6.25 per additional $1,000 to $1,000,000; $6,982.00 + $5.25 per additional $1,000 above $1,000,000Verifiedvia Residential Building Permit (New Single-Family Home) | Residential Building Permit (New Single-Family Home) → |
| Carefree | Same valuation schedule as building permits: $25 flat up to $500, scaling to $11,850 + $5/additional $1,000 above $1,000,000Verified | Mechanical / HVAC Permit → |
| Casa Grande | $75.00Verified | Mechanical / HVAC Permit → |
| Cave Creek | Based on Valuation — see Building Permit Fee valuation tableVerified | Mechanical / HVAC Permit → |
| Chandler | $100.00Verified | Mechanical / HVAC Permit → |
| Chino Valley | $110.00Verified | Mechanical / HVAC Permit → |
| City of Globe | 5% of the Building Permit Fee Table (Table 1-A, valuation-based), plus a $30 administrative feeVerified | Mechanical / HVAC Permit (OTC / Stand-Alone) → |
| City of Maricopa | $56Verified | Mechanical / HVAC Permit → |
| City of St. Johns | $50.00Verifiedvia Residential Building Permit | Residential Building Permit → |
| Clarkdale | Calculated from ICC Building Safety Journal square-foot construction-cost tables / Table 1-A methodology, or itemized per the Town's fee scheduleVerified | Mechanical / HVAC Permit → |
| Colorado City | Confirmed gap — set by a separate Town Council resolution not published on the Town's website as of the last verificationVerified | Mechanical / HVAC Permit → |
| Coolidge | $22.00Verified | Mechanical / HVAC Permit → |
| Cottonwood | $45.24Verified | Mechanical / HVAC Permit → |
| Dewey-Humboldt | Per Yavapai County Valuation and Fee Schedule (pass-through fee, based on project valuation/square footage), PLUS a Town Building Permit Administration fee of 42% of the calculated building permit feeVerifiedvia Building Permit (New Construction, incl. Single-Family Residence, ADU, Garage/Carport, Room Addition, Manufactured Home) | Building Permit (New Construction, incl. Single-Family Residence, ADU, Garage/Carport, Room Addition, Manufactured Home) → |
| Douglas | $50.00Verified | Mechanical / HVAC Permit → |
| Eagar | See city page for the current Residential Building Permit fee | Residential Building Permit → |
| El Mirage | $75 flat (valuation $1,000 or less); $100 + $6/$1,000 of valuation ($1,001-$999,999); $100 + $5/$1,000 of valuation ($1,000,000+)Verified | Heating & Air Conditioning Repair or Replacement Permit → |
| Eloy | $70.00Verified | Mechanical / HVAC Permit → |
| Flagstaff | $29.90Verified | Mechanical / HVAC Permit → |
| Florence | $75.00Verified | Mechanical / HVAC Permit → |
| Fountain Hills | $140.00Verified | Mechanical / HVAC Permit (Minor Replacement) → |
| Fredonia | Non-refundable fee due at submittal (exact amount not published)Verified | Mechanical / HVAC Permit → |
| Gila Bend | $65Verified | Mechanical / HVAC Permit → |
| Gilbert | $1.00–$1,100.00: $50.00; $1,100.01–$2,000.00: $50.00 + $3.00 per additional $100; $2,000.01–$25,000.00: $75.00 + $12.50 per additional $1,000; $25,000.01–$50,000.00: $355.00 + $9.00 per additional $1,000; $50,000.01–$100,000.00: $580.00 + $6.25 per additional $1,000; $100,000.01–$250,000.00: $895.00 + $5.00 per additional $1,000; $250,000.01–$500,000.00: $2,900.00 + $4.25 per additional $1,000; $500,000.01–$1,000,000.00: $5,000.00 + $2.75 per additional $1,000; over $1,000,000.00: $3,500.00 + $1.25 per additional $1,000Verifiedvia Residential Building Permit (New Single-Family Dwelling) | Residential Building Permit (New Single-Family Dwelling) → |
| Glendale | $29.79 base feeVerified | Mechanical / HVAC Permit → |
| Goodyear | $55 Base + $68 Permit + $102 Application = $225 TotalVerified | Mechanical / HVAC Permit → |
| Guadalupe | $50 minimum (valuation $1-$500), scaling per the Town's valuation-based Building Permit Fee tableVerified | Mechanical / HVAC Permit → |
| Holbrook | Based on IBC/UBC Building Data-IRC 2018 valuation charts and formulas (valuation-based; no flat dollar figure published)Verifiedvia Residential Building Permit (New Construction / Remodel / Accessory Building) | Residential Building Permit (New Construction / Remodel / Accessory Building) → |
| Huachuca City | Same valuation table as new construction ($50 at $1-$1,000 scaling to $25,175.20 + $1/additional $1,000 above $5,000,000), plus 65% Plan Review FeeVerified | Mechanical / HVAC Permit → |
| Jerome | $50.00 minimum ($1-$500 valuation); $50.00 + $2.75 per additional $100 to $2,000; $91.25 + $12.50 per additional $1,000 to $25,000; $378.75 + $9.00 per additional $1,000 to $50,000; $603.75 + $6.25 per additional $1,000 to $100,000; $916.25 + $5.00 per additional $1,000 to $500,000; $2,916.25 + $4.25 per additional $1,000 to $1,000,000; $5,041.25 + $2.75 per additional $1,000 above $1,000,000Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Kayenta Township | 1% of estimated project valuationVerifiedvia Residential Building Permit | Residential Building Permit → |
| Kingman | $24.68 ($1-$500); $24.68 + $3.20 per additional $100 to $2,000; $72.71 + $14.70 per additional $1,000 to $25,000; $411.34 + $10.61 per additional $1,000 to $50,000; $675.89 + $7.35 per additional $1,000 to $100,000; $1,043.44 + $5.88 per additional $1,000 to $500,000; $3,395.44 + $4.99 per additional $1,000 to $1,000,000; $5,889.19 + $3.83 per additional $1,000 above $1,000,000Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Lake Havasu City | Valuation-based or per applicable flat retainer, consistent with the City's Uniform Building Code fee-schedule reference (Master Fee Schedule, Service Nos. S-033/S-034)Verified | Mechanical / HVAC Permit → |
| Litchfield Park | $150Verified | Mechanical / HVAC Permit → |
| Marana | $50.00Verified | Mechanical / HVAC Permit (Heating and Cooling Replacement) → |
| Mesa | $0–$8,333: $220; $8,334–$16,667: $330; $16,668–$24,999: $440; $25,000–$200,000: $500 plus $6/each $1,000 over $25,000Verified | Mechanical / HVAC Permit (Stand-Alone) → |
| Nogales | Based on Valuation (2012 IRC Appendix L 'Permit Fees', adopted by City Code Sec. 5-26 and Ordinance No. 2015-11-005) — no separately itemized flat mechanical fee line was found; billed under the same valuation mechanism as other building permit work.Verified | Mechanical / HVAC Permit → |
| Oro Valley | $48.95Verified | Mechanical / HVAC Permit (Heating and Cooling Equipment Replacement) → |
| Page | $23.50 (valuation $1-$500) through $5,608.75 + $3.65 per additional $1,000 above $1,000,000Verified | Mechanical / HVAC Permit → |
| Paradise Valley | $130.00Verified | Mechanical / HVAC Permit → |
| Parker | $50.00Verified | Mechanical / HVAC Permit → |
| Peoria | Minimum fee $87. Valuation-based permit fee per Development Fee Schedule. There is no separate flat-fee mechanical schedule; valuation is based on the scope of work.Verified | Mechanical / HVAC Permit → |
| Phoenix | $1–$1,000: $195 base fee; $1,001–$10,000: $195 on first $1,000 plus $12 per additional $1,000; $10,001–$50,000: $303 on first $10,000 plus $10 per additional $1,000. Larger projects per Table A tiers.Verified | Mechanical / HVAC Permit → |
| Pima | $100.00Verifiedvia Building / Addition / Remodel Permit | Building / Addition / Remodel Permit → |
| Pinetop-Lakeside | Based on the Most Current International Code Council Building Valuation Data (published bi-annually), by Type of Construction, per ICC Building Fee Schedule Appendix L; calculated to the nearest $1,000 of valuationVerifiedvia Residential Building Permit (New Construction / Addition / Remodel) | Residential Building Permit (New Construction / Addition / Remodel) → |
| Prescott | Total building square footage × $0.0792Verified | Mechanical Only Permit (HVAC) → |
| Prescott Valley | Greater of $26.75 or $0.02 per square footVerified | Mechanical / HVAC Permit → |
| Quartzsite | Calculated dynamically through iWorq per Table 1-A of the currently adopted International CodeVerified | Mechanical / HVAC Permit → |
| Queen Creek | 5% of Fee Table, plus $20 administrative feeVerified | Mechanical / HVAC Permit → |
| Safford | Building Permit Fee Schedule valuation bracket for the work performed, PLUS $5.00 utility add-onVerified | Mechanical / HVAC Permit → |
| Sahuarita | 25% of the Building Permit Fee (per the § 3.10.080(A) valuation schedule applied to the mechanical work's value)Verified | Mechanical / HVAC & Water Heater Permit → |
| Salt River Pima-Maricopa Indian Community | Per Appendix N Table 1A: $60 for $1–$500 valuation, scaling up through $7,550 for the first $1,000,000 plus $4.00 per additional $1,000 for valuations above $1,000,000Verifiedvia Residential Building Permit | Residential Building Permit → |
| San Luis | See city page for the current Mechanical / HVAC Permit fee | Mechanical / HVAC Permit → |
| Scottsdale | $121Verified | Mechanical / HVAC Permit → |
| Sedona | Per City of Sedona Consolidated Fee Schedule, Valuation/Permit Fee ScheduleVerifiedvia Single-Family Residential Building Permit (New Construction) | Single-Family Residential Building Permit (New Construction) → |
| Show Low | Formulated by the 1997 Uniform Building Code (UBC) valuation-based fee scheduleVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Sierra Vista | $50Verified | Mechanical / HVAC Permit → |
| Snowflake | $50Verifiedvia Residential Building Permit (New Construction, Additions, Remodels) | Residential Building Permit (New Construction, Additions, Remodels) → |
| Somerton | $50Verified | Mechanical / HVAC Permit → |
| South Tucson | $28.00Verified | Mechanical / HVAC Permit → |
| Springerville | $100.00Verifiedvia Residential Building Permit (New Construction, Additions, Remodels) | Residential Building Permit (New Construction, Additions, Remodels) → |
| Surprise | Base: $100 per permit. Valuation $1.00–$999,999.99: $6.00 per each $1,000 of valuation. Plus 0.50% administrative processing fee on valuation.Verified | Mechanical / HVAC Permit → |
| Taylor | 75% of standard ICC/UBC valuation-based fee tableVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Tempe | Per Table 1-A tiers. For example: $2,001–$25,000: $197.78 for the first $2,000 plus $30.61 per additional $1,000. Plan Review Fee is 65% of the building permit fee, collected separately at application.Verified | Mechanical / HVAC Permit → |
| Thatcher | Set by Town Council resolution — no fixed dollar figure is publishedVerified | Mechanical / HVAC Permit → |
| Tohono O'odham Nation | See city page for the current Residential Building Permit (One- and Two-Family Dwellings) fee | Residential Building Permit (One- and Two-Family Dwellings) → |
| Tolleson | Same valuation-based table as new construction (see Residential Building Permit fee entry)Verified | Mechanical / HVAC Permit → |
| Tombstone | Same Building Permit valuation table as other trades: $0 ($0-$500.99) scaling to $7,366.30 for the first $1,000,000 plus $4.84 per additional $1,000 above $1,000,000.01Verified | Mechanical / HVAC Permit → |
| Town of Payson | $109.00Verified | Mechanical / HVAC Permit → |
| Town of Winkelman | See city page for the current Building Permit (New Construction, Residential and Commercial) fee | Building Permit (New Construction, Residential and Commercial) → |
| Tucson | $150.00Verified | Mechanical / HVAC Permit (Trade Permit) → |
| Tusayan | $50.00 base fee to issue, plus per-unit charges (e.g., forced-air/gravity furnace unit by BTU/h tier, refrigeration/cooling system, boilers and compressors by hp/BTU tier, evaporative cooler, ventilation fan)Verified | Mechanical / HVAC Permit → |
| Unincorporated Apache County | Based on the August 2016 ICC Building Valuation Data TableVerifiedvia Residential Building Permit (New Construction, One- and Two-Family Dwelling) | Residential Building Permit (New Construction, One- and Two-Family Dwelling) → |
| Unincorporated Cochise County | $24.00 for $1–$500 of valuation; $30.00+$1.00/$100 over $500 for $501–$5,000; $69.00+$11.00/$1,000 over $2,000 for $5,001–$40,000; $487.00+$9.00/$1,000 over $40,000 for $40,001–$100,000; $1,027+$7.00/$1,000 over $100,000 for $100,001–$500,000; $3,827.00+$5.00/$1,000 over $500,000 for $500,001–$1,000,000; $6,327.00+$3.00/$1,000 over $1,000,000 for $1,000,001–$5,000,000; $18,327+$1.00/$1,000 over $5,000,000 for $5,000,001 and overVerifiedvia Residential Building Permit (New Construction, Addition, Accessory Structure) | Residential Building Permit (New Construction, Addition, Accessory Structure) → |
| Unincorporated Coconino County | $50.00 baseVerified | Mechanical / HVAC Permit → |
| Unincorporated Gila County | $25.00 per permitVerified | Mechanical / HVAC Permit → |
| Unincorporated Graham County | Valuation = $100.00 per livable square foot, run through the Total Valuation fee bracket table: $1-$500: $20; $501-$2,000: $20 for the first $500 plus $1.00 per additional $100 or fraction; $2,001-$25,000: $20 for the first $2,000 plus $4.00 per additional $1,000 or fraction; $25,001-$50,000: $112 for the first $25,000 plus $3.00 per additional $1,000 or fraction; $50,001-$100,000: $187 for the first $50,000 plus $2.00 per additional $1,000 or fraction; $100,001-$500,000: $287 for the first $100,000 plus $1.50 per additional $1,000 or fraction; $500,001 and up: $887 for the first $500,000 plus $1.00 per additional $1,000 or fractionVerifiedvia Residential Building Permit (New Construction, Addition, Accessory Structure) | Residential Building Permit (New Construction, Addition, Accessory Structure) → |
| Unincorporated La Paz County | $1–$500: $50.00; $501–$2,000: $50.00 for first $500 plus $4.00 per additional $100 (or fraction) to $2,000; $2,001–$25,000: $110.00 for first $2,000 plus $16.00 per additional $1,000 (or fraction) to $25,000; $25,001–$50,000: $478.00 for first $25,000 plus $12.00 per additional $1,000 to $50,000; $50,001–$100,000: $780.00 for first $50,000 plus $8.00 per additional $1,000 to $100,000; $100,001–$500,000: $1,180.00 for first $100,000 plus $6.00 per additional $1,000 to $500,000; $500,001–$1,000,000: $3,580.00 for first $500,000 plus $6.00 per additional $1,000 to $1,000,000; $1,000,001+: $6,580.00 for first $1,000,000 plus $2.70 per additional $1,000 (or fraction thereof), Maximum Permit Fee: $250,000Verifiedvia Residential Building Permit (New Construction, Addition, Accessory Structure) | Residential Building Permit (New Construction, Addition, Accessory Structure) → |
| Unincorporated Maricopa County | $50 flatVerified | Mechanical / HVAC Permit → |
| Unincorporated Mohave County | $1–$500: $21.60; $501–$2,000: $21.60 for first $500 + $2.70 per addl $100; $2,001–$25,000: $62.10 for first $2,000 + $12.42 per addl $1,000; $25,001–$50,000: $347.76 for first $25,000 + $8.64 per addl $1,000; $50,001–$100,000: $563.76 for first $50,000 + $6.21 per addl $1,000; $100,001–$500,000: $874.26 for first $100,000 + $4.86 per addl $1,000; $500,001–$1,000,000: $2,818.26 for first $500,000 + $4.32 per addl $1,000; $1,000,000+: $4,978.26 for first $1,000,000 + $2.70 per addl $1,000Verifiedvia Residential Building Permit (New Construction, Addition, Accessory Structure) | Residential Building Permit (New Construction, Addition, Accessory Structure) → |
| Unincorporated Navajo County | See city page for the current Residential Building Permit (New Construction, Addition, Accessory Structure) fee | Residential Building Permit (New Construction, Addition, Accessory Structure) → |
| Unincorporated Pima County | $27Verified | Mechanical / HVAC Permit → |
| Unincorporated Pinal County | $42.00 (plus $6.50 per supplemental permit on an unexpired original permit)Verified | Mechanical / HVAC Permit → |
| Unincorporated Santa Cruz County | $1–$500: $60.00 minimum fee; $501–$2,000: $23.50 for the first $500 + $3.00 per additional $100 (or fraction), $60 minimum; $2,001–$25,000: $69.00 for the first $2,000 + $14.00 per additional $1,000 (or fraction); $25,001–$50,000: $391.50 for the first $25,000 + $10.00 per additional $1,000; $50,001–$100,000: $643.50 for the first $50,000 + $7.00 per additional $1,000; $100,001–$500,000: $993.50 for the first $100,000 + $5.50 per additional $1,000; $500,001–$1,000,000: $3,233.50 for the first $500,000 + $4.50 per additional $1,000; $1,000,001+: $5,608.50 for the first $1,000,000 + $3.50 per additional $1,000Verifiedvia Residential Building/Grading Permit (New Construction, Additions, Accessory Structures) | Residential Building/Grading Permit (New Construction, Additions, Accessory Structures) → |
| Unincorporated Yavapai County | $200Verifiedvia Residential Building Permit (New Single-Family Residence, Addition, Remodel, Accessory Structure) | Residential Building Permit (New Single-Family Residence, Addition, Remodel, Accessory Structure) → |
| Unincorporated Yuma County | $310.00 (as published in the current Residential Permit Guide's Fee Schedules table; the underlying valuation-based Table 1-A brackets are published as Attachment #3 to the county's Fee Schedule document and are not reproduced here as line-item dollar brackets)Verifiedvia Residential Building Permit (New Construction, Addition, Remodel) | Residential Building Permit (New Construction, Addition, Remodel) → |
| Wellton | Calculated by Building Safety Division staff at intake based on project valuationVerified | Mechanical / HVAC Permit → |
| Wickenburg | See city page for the current Residential Building Permit (New Construction) fee | Residential Building Permit (New Construction) → |
| Willcox | 25% of the Construction Fee, minimum $30.00Verified | Mechanical / HVAC Permit → |
| Williams | Fee schedule as established by City of Williams resolution of the City Council (exact dollar amounts not published)Verified | Mechanical / HVAC Permit → |
| Winslow | Calculated per Table 1-A of the 1997 Uniform Mechanical Code, plus 10%Verified | Mechanical / HVAC Permit → |
| Youngtown | $85 minimum ($0-$500 value); $85 + $3.05/additional $100 to $2,000; $150.75 + $14/additional $1,000 to $25,000; $442.75 + $10.10/additional $1,000 to $50,000; $695.25 + $7/additional $1,000 to $100,000; $1,045.25 + $5.60/additional $1,000 to $500,000; $3,285.25 + $4.75/additional $1,000 to $1,000,000; $5,660.25 + $3.65/additional $1,000 above $1,000,000Verifiedvia Residential Building Permit (Additions, Alterations, New Construction, Garages, Shops) | Residential Building Permit (Additions, Alterations, New Construction, Garages, Shops) → |
| Yuma | $50.00 (plus $7.00 for each supplemental permit on an unexpired original)Verified | Mechanical / HVAC Permit → |