HVAC Tools
24 free tools built for HVAC pros. Real terminology, real benchmarks, real formulas. No login, no fees, no BS.
Technical Calculators
Sizing, airflow, and system design
Load Calculator
Simplified Manual J. Enter home details, get BTU and tonnage recommendations.
CFM Calculator
Calculate required CFM for any room with register sizing recommendations.
Duct Size Calculator
Size round or rectangular ducts by CFM with velocity checks.
ACH Calculator
Calculate air changes per hour with code compliance checking.
Refrigerant Charge
Estimate additional refrigerant charge by line set length.
SEER Savings
Show customers their savings from upgrading to a higher-SEER system.
BTU Calculator
Size a mini-split or window unit for any room in 30 seconds.
Static Pressure
Verify your duct system can deliver required airflow.
Business & Pricing
Margins, rates, and job costing
Profit Margin
See your real margin on any job. Pre-loaded with HVAC benchmarks.
Labor Rate
Find out what you actually need to charge per hour to be profitable.
Service Call Pricing
Price a service call with HVAC-specific parts and labor.
Flat Rate Builder
Build flat-rate prices for common repairs. Compare to national averages.
Parts Markup
Calculate sell price and margin on HVAC parts at any markup.
Install Pricing
Price a full HVAC installation with equipment, labor, and materials.
Business Valuation
Estimate what your HVAC business is worth.
Overhead Calculator
Know your true break-even by adding up all HVAC business costs.
Templates & Documents
Invoices, estimates, and checklists
Invoice Generator
Professional HVAC invoices with equipment fields and warranty terms. PDF ready.
Estimate Template
Good/Better/Best estimates with equipment specs and rebates. PDF ready.
Work Order
Complete work orders with system readings and safety checklists.
Maintenance Checklist
Seasonal tune-up checklist. Interactive + printable PDF.
Service Agreement
Build maintenance contracts with tiered pricing. Revenue projections included.
Inspection Report
Professional inspection reports with color-coded ratings.
Sales Tools
Customer-facing calculators
All 24 tools are 100% free. No login. No email gate.
Pick a tool above and get to work.