Target superheat. PT chart. Capacitor pass/fail. Rough capacity from square footage. And Hank — the HVAC AI assistant trained on diagnostics, fault codes, and code requirements. Free, no signup, no email gate.
Gauge pressures + line temps in → superheat, subcooling, and an undercharge / overcharge / restriction verdict with the reasoning.
NewWet-bulb and outdoor temp in, target superheat out. For fixed-orifice systems on the most common refrigerants.
NewPressure to saturation temperature for R-410A, R-32, R-22, R-454B. Type a pressure, see the temp.
NewType rated and measured MFD. Get pass/fail with the ±6% threshold called out.
NewSquare footage → rough BTU estimate. For ballpark sizing before you run the real Manual J.
Full ASHRAE-based residential load calc + Manual D duct sizing. Free, no per-report fee. Runs at loadcalc.launchmyhvac.com.
Walk through winding resistance, megger, capacitor, and amp draw tests. Generates the proof document warranty companies require.
NewRule-out subcool + bulb-warm + bulb-cold + drier tests. Stops "did you really test the TXV?" disputes.
NewDocumented leak search + recovery + evacuation per EPA Section 608. Audit-proof + warranty-ready.
NewTESP vs blower table + per-component drops. Turn comfort complaints into approved duct upgrades.
NewProve the heat pump is working before the customer asks for a refund. Documents reversing valve + aux strips.
NewNCI/BPI-protocol gas furnace safety inspection. CO + O2 + draft + manifold + temp rise + flame sensor + spillage. The doc your insurance wants.
NewContactor wear + capacitor MFD + supply voltage + optional hard-start kit. Documented "before" numbers justify the $35+$80+$300 parts sale.
7 Tier-1 diagnostic procedures available now. More coming: IAQ, drain inspection, duct leak test.
278 in-depth, original HVAC guides — charging, electrical, heat pumps, gas heat, airflow, and field diagnostics. Written by working techs, free to read.
NewEvery refrigerant we support with properties, replacement notes, A2L flammability flags, and EPA notes.
Paste a serial — get the manufacture date and capacity. 120+ HVAC brands supported.
Searchable error code library across major HVAC brands.
Decode furnace and control-board blink codes. Stop guessing, start fixing.
Specs, refrigerant, electrical, and field notes for over 20,000 HVAC models.
Field-tested guides on TXVs, superheat, refrigerant transitions, and diagnostics.
Trained on HVAC diagnostics, fault codes, and code requirements. Free for the public — 5 questions per day. Unlimited inside the LaunchMyHVAC CRM.
Ask HankDispatch, jobs, estimates, invoicing, memberships, and AI diagnostics in one operating system built for HVAC service teams. Invite-only beta right now — request an invite and we’ll email you when a spot opens.