Peter's HVAC Advisory

HVAC Lens — offline-first tools on your phone

Built for air conditioning mechanics and apprentices who need real numbers before they recover, replace, or walk away. HVAC Lens is your pocket diagnostic suite: multi-refrigerant RefCalc and PT charts, electrical sizing (MCA, wire, voltage drop), and more — installable on your phone.

Calculators run on your device — no constant cloud connection. Punch SH/SC, coil TD, breaker, and wire offline once the app is installed. Use the internet for the live website, your account, or when there’s an app update.

• Offline-first on your phone after install
• No live connection required for PT charts, RefCalc, or electrical tools
• Online for the live site, login/signup, and updates
• Refrigerant diagnostics + electrical suite apprentices actually use
• Built by a Red Seal Refrigeration Mechanic