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Tools/Calculators
Field calculators

HVAC calculators that don't ask for your email.

Built for the truck. Type a couple inputs, get a real answer. No signup, no per-report fee, no upgrade pop-ups.

Target Superheat Lookup

Wet-bulb and outdoor temp in, target superheat out. For fixed-orifice systems.

1-input calc Open →

Interactive PT Chart

Pressure ↔ saturation temp for R-410A, R-32, R-22, R-454B.

4 refrigerants Open →

Capacitor Tolerance Check

Rated and measured MFD in, pass/fail with ±6% threshold out.

1-click verdict Open →

Capacity Estimator

Square footage → rough BTU sizing. Ballpark before you run real Manual J.

Rough-cut sizing Open →

Manual J Load Calculator

Full ASHRAE-based residential load calc + Manual D duct sizing + customer-ready PDF. Free, no per-report fee. Runs on its own subdomain at loadcalc.launchmyhvac.com.

Customer-ready PDF Open →

Like these tools? The full LaunchMyHVAC CRM is free too.

Dispatch, jobs, estimates, invoicing, memberships, and AI diagnostics in one operating system built for HVAC service teams. Free plan, no credit card.

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