HVAC Admin
Free tools & knowledge hub for HVAC techs
HVAC Admin launched on February 7, 2026 with 2 votes, #6,500 of 16,627 launches that month.
In plain words
HVAC Admin is a free browser-based toolkit designed for HVAC field technicians. It includes workflow tools such as an invoice generator, job calendar, and parts database, along with calculators for BTU load, refrigerant charge, and duct sizing. The platform also provides a knowledge hub with refrigerant specifications, capacitor cross-references, troubleshooting guides, and EPA 608 exam prep materials. All features require no signup, making it accessible for technicians who need quick answers and professional invoices on the job site.
written from the facts on this page · September 2026
From the sources
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.
The #1 free resource for HVAC technicians. EPA 608 exam prep, refrigerant specifications, and safety training modules.
Calculators, Parts Database, Certification Prep & More. Built for field work and fast decisions. Create professional invoices with line items, taxes, and customer-ready totals. Search compatible parts by brand, model, and replacement cross-references. Plan service visits, track jobs, and keep your week organized. Estimate cooling capacity for any room with fast field inputs. Superheat and subcooling calculations for precise system charging. EU refrigerant handling requirements and certification basics. Use calculators, generate invoices, and search parts before you signfrom hvacadmin.com
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