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. Free plan, no credit card.