HVAC Maintenance Cost Estimator
Estimate your annual HVAC maintenance costs based on system type, age, square footage, and service plan. Includes filter replacements, tune-ups, and emergency repair reserves.
Formulas Used
Total Annual Cost = Tune-Up Cost + Filter Cost + Duct Cleaning Reserve + Repair Reserve + Refrigerant/Coil Cost + Boiler Cost
- Tune-Up Cost = (Cost/Visit × Visits/Year + Premium Surcharge) × Number of Units
- Filter Cost = Replacements/Year × Cost/Filter × Filters per Unit × Number of Units
Filters per Unit = max(1, ⌈sq ft ÷ 1,000⌉) - Duct Cleaning Reserve = max($300, sq ft × $0.15) ÷ 4 years
- Repair Reserve = Replacement Cost × 1% × Age Factor × Climate Factor × Warranty Factor
Age Factor: <5 yrs=0.5, 5–10=1.0, 10–15=1.5, 15–20=2.0, >20=2.5
Climate Factor: Mild=0.85, Moderate=1.0, Extreme=1.25
Warranty Factor: Active=0.60, None=1.0 - Monthly Budget = Total Annual Cost ÷ 12
- Cost per Sq Ft = Total Annual Cost ÷ Conditioned Sq Ft