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HVAC Admin

HVAC Admin

Free tools & knowledge hub for HVAC techs

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The all-in-one toolkit for HVAC field technicians. Workflow Tools: Invoice generator, job calendar, and parts database — all in your browser, no signup. Field Calculators: BTU load, refrigerant charge (superheat/subcooling), and duct sizing. Knowledge Hub: Refrigerant specs, capacitor cross-reference, and troubleshooting guides. Built for technicians who need quick answers on the job site, not another subscription.

HVAC Admin makers

Here are the founders, developers, designers and product people who worked on HVAC Admin

David
DavidFree HVAC Tools
HVAC Admin HVAC Admin