CostInMyCity

St. Paul, MN / HVAC replacement

HVAC replacement cost in St. Paul, MN

Average $7,500; common $5,000–$12,500; up to $22,000 with new ductwork. Central AC $3,900–$7,900; gas furnace $3,800–$10,000; heat pump $4,200–$7,600; labor about $1,500.

Labor for HVAC replacement in St. Paul, MN is indexed to the BLS construction-and-extraction occupations mean hourly wage for Minneapolis-St. Paul-Bloomington, MN-WI of $37.82 (May 2025), applied to the 30% labor share.

Reuses already-cited Minneapolis-St. Paul-Bloomington May 2025 construction mean $37.82 (same OEWS metro as minneapolis-mn).

City of Saint Paul Department of Safety and Inspections (DSI) is the issuing office. The typical permit fee recorded from City of Saint Paul DSI warm-air / ventilation fees (still posted; mechanical application effective 2/25/2023), retrieved 2026-09-01, is $86. Fee model: flat.

The national typical for this job is $7,500. Materials stay at the national figure while labor is wage-indexed for St. Paul, MN.

Typical all-in

$8,044

Job cost plus the recorded local permit fee at this size.

Low
$5,391
Typical
$8,044
High
$23,428

Breakdown

Labor (allocated)$2,387
Materials (allocated)$5,571
Job subtotal$7,958
Permit$86
All-in typical$8,044

Labor is adjusted for construction wages in this metro. Materials stay at the national figure. This is an estimate, not a contractor quote.

Permit fee

Fee model
Flat fee
Typical fee
$86
Range
$86
Retrieved
2026-09-01
  • Warm-air heating system first 100,000 input BTU — $85Included. Official warm-air page / mechanical application.
  • MN state surcharge — $1Gas/oil burner surcharge is a flat $1.00 per permit (not per burner) on the mechanical application. Included in typical.

Typical 3-ton (36,000 BTU) like-for-like split with 80,000 BTU furnace = $85.00 + $1.00 surcharge = $86.00. Low furnace-only uses $0.50 surcharge when job value is treated as the $85 fee band only = $85.50. High remains one system $86.00.

City of St. Paul. Residential warm-air heating $85 for the first 100,000 input BTU (includes system ductwork). Typical 80,000 BTU furnace companion is in that band. Condenser/AC as a separate refrigeration 1%-of-valuation permit is not stacked because the warm-air fee includes system ductwork for a like-for-like split.

City of Saint Paul DSI warm-air / ventilation fees (still posted; mechanical application effective 2/25/2023)

Citations

  1. How Much Does HVAC Replacement Cost? [2026 Data] Retrieved Aug 12, 2026. Average $7,500; $5,000–$22,000; labor about $1,500; national permit range $50–$500 (not city-specific).
  2. City of Saint Paul DSI warm-air / ventilation fees (still posted; mechanical application effective 2/25/2023) Retrieved Aug 31, 2026. City of St. Paul. Residential warm-air heating $85 for the first 100,000 input BTU (includes system ductwork). Typical 80,000 BTU furnace companion is in that band. Condenser/AC as a separate refrigeration 1%-of-valuation permit is not stacked because the warm-air fee includes system ductwork for a like-for-like split.
  3. BLS OEWS construction wages — Minneapolis-St. Paul-Bloomington, MN-WI BLS OEWS construction-and-extraction mean hourly wage / national same vintage, applied to laborShare only. Not a city-specific bid survey.

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