HVAC Estimator
HVAC Estimating Software
Stop sizing equipment and pricing ductwork by hand. AI generates your complete HVAC estimate — equipment, ductwork, labor — in under 60 seconds.
Generate My HVAC Estimate FreeWhat an HVAC Estimate Includes
A complete HVAC estimate covers eight cost categories. CostKit handles all of them automatically based on your project details.
Condensing unit / heat pump
$1,500–$5,000
Furnace / air handler
$1,200–$3,500
Ductwork and fittings
$1,500–$5,500
Refrigerant line set
$300–$1,200
Thermostat (smart/programmable)
$75–$350 installed
Electrical hookup
$500–$1,500
Permits and inspection fees
$150–$600
Labor (licensed HVAC tech)
$80–$160/hr by region
Average HVAC Project Costs (2026)
Source: HomeAdvisor/Angi national survey data. Costs vary by region, climate zone, and equipment brand.
| Project | Avg Cost | Typical Range |
|---|---|---|
| Central AC + furnace (new install, 2,000 sq ft) | $10,500 | $7,000–$15,000 |
| AC condenser replacement | $4,200 | $2,500–$6,500 |
| Furnace replacement (gas) | $3,800 | $2,000–$5,500 |
| Heat pump system (installed) | $7,500 | $4,500–$12,000 |
| Full ductwork install (new construction) | $4,500 | $2,500–$7,500 |
| Ductwork repair / sealing | $1,200 | $500–$2,500 |
How CostKit Handles HVAC Estimates
Describe your project — new system install, furnace replacement, or ductwork overhaul — and CostKit's AI generates a complete, phase-by-phase estimate in seconds. No spreadsheets, no manual load calculations.
- Equipment sized by square footage and climate zone
- Ductwork quantities calculated from project layout
- Permit fees estimated by state
- Branded PDF ready to send to your client
Sample: 2,000 sq ft Home — Full HVAC
3-ton AC Condenser$3,200
Gas Furnace (80K BTU)$2,800
Ductwork + Fittings$3,400
Refrigerant Line Set$650
Smart Thermostat$280
Electrical Hookup$850
Permit & Inspection$350
Labor (licensed, 3 days)$3,200
Total$14,730
CostKit vs. Other HVAC Estimating Options
| Tool | Time to estimate | Monthly cost | Regional pricing | Output |
|---|---|---|---|---|
| CostKit AI | < 60 seconds | Free–$89/mo | Yes (auto) | Branded PDF |
| Manual takeoff | 2–4 hours | $0 (your time) | Manual lookup | Spreadsheet |
| ServiceTitan / Successware | 30–60 min | $245–$600+/mo | Partial | Invoice / estimate |
HVAC Estimating — Frequently Asked Questions
How do you estimate HVAC installation costs?
HVAC installation costs are estimated by calculating required system capacity (tonnage based on square footage and climate zone), selecting equipment (furnace, AC condenser, air handler), measuring ductwork runs, and adding refrigerant lines, electrical hookup, thermostat, permits, and labor. A typical 2,000 sq ft home averages $7,000–$15,000 for a full system. CostKit generates a line-item breakdown automatically with regional labor adjustments.
How long does an HVAC installation take?
A complete HVAC system replacement in an existing home typically takes 1–3 days. New construction rough-in with ductwork takes 3–5 days depending on home size. A simple furnace or AC swap can often be completed in a single day.
Do I need a permit for HVAC work?
Yes, nearly all HVAC work beyond basic filter changes and thermostat swaps requires a permit. This includes new installations, system replacements, ductwork modifications, and refrigerant line work. Permit fees range from $150 to $600 depending on jurisdiction and project scope.
What is included in an HVAC estimate?
A complete HVAC estimate includes the condensing unit or heat pump, air handler or furnace, ductwork and fittings, refrigerant line set, thermostat, electrical hookup, sheet metal transitions, permit and inspection fees, and licensed HVAC technician labor at the regional rate.
Get Your HVAC Estimate in 60 Seconds
Start with 2 free estimates per month — no credit card required. Upgrade anytime for unlimited estimates and branded PDFs.
Generate My HVAC Estimate Free