Practical troubleshooting — written for maintenance techs, property managers, and anyone who fixes things for a living.
The full FixAtlas session transcript with timestamps: how the AI triaged tumble-but-no-heat in 90 seconds, dispatched the thermal-fuse continuity test, then blocked the $15 fuse install until the vent was cleared. The structured answer, published before you start a session.
ToolsA real FixAtlas session, condensed: the AI triages a tumble-but-no-heat complaint, walks the homeowner through a thermal-fuse continuity test, then blocks the $15 fuse install until the clogged vent is cleared. See Dryer Not Heating for the full field guide.
HVAC TrainingThe habits that turn a competent technician into one with a 3% callback rate — observation-first thinking, diagnostic sequencing, and root cause analysis. Built for experienced field techs who want to move more jobs per day with fewer callbacks.
HVAC TrainingThe habits that separate techs with low callback rates from the ones always chasing their own work. Practical training tips for new techs and veterans alike — observe before touching, build a diagnostic sequence, ask "why?" until the answer stops being a part.
HVACMisdiagnosing compressor failure as a refrigerant leak. Replacing a flame sensor when the real problem is a cracked heat exchanger. Here's the 5 mistakes that drive callbacks — and how a structured diagnostic sequence fixes them.
HVACEvery callback is a diagnosis that failed on the first trip. Here's the structured check sequence that separates techs with 5% callback rates from the ones running callbacks on every third call — and the math on why it matters.
HVACAC running but not cooling the house? Work through the 7-step field-proven diagnostic sequence — from a clogged filter to a failed compressor — with safety steps and cost estimates for every repair.
HVACFurnace clicks but won't light? Here's how to diagnose the 5 most common causes in order — bad ignitor, dirty flame sensor, gas supply issue, pressure switch fault, or a locked-out control board.
PlumbingPilot keeps going out? The thermocouple is the culprit 80% of the time. Here's how to diagnose and fix a water heater pilot that won't hold — thermocouple test, pilot cleaning, draft check, and gas valve diagnosis.
AppliancesDisposal hums but won't spin? Almost always a jammed flywheel. Here's how to clear it with a hex wrench, press the reset, and diagnose what to do if it still won't start — with notes for InSinkErator, Waste King, Moen, and KitchenAid.
HVACThermostat screen completely blank? It's a power problem — breaker, fuse, C-wire, or transformer. Here's the 6-step diagnostic flow with manufacturer-specific notes for Nest, Ecobee, Honeywell Home, and Emerson Sensi.
HVACAC running but blowing warm air? Check the thermostat, filter, and outdoor unit first — most calls resolve there. Here's the full 7-step checklist with fix times and cost ranges for every cause, from a clogged filter to a failed compressor.
PlumbingTop, middle, or bottom — where the water appears tells you what to fix and how urgently. Drain valve, T&P valve, anode rod, and tank corrosion diagnostics with cost estimates for every fix.
PlumbingWater at the base of your water heater? It's usually the drain valve, T&P relief valve discharge, tank corrosion, or condensation. Here's how to tell the difference — with safety warnings and cost ranges for every fix.
AppliancesDryer tumbling but producing no heat? Match the symptom to a likely cause with the symptom-pattern table, then walk the 6-step diagnostic sequence — thermal fuse, heating element, gas igniter, cycling thermostat & thermistor, mandatory vent clearing, and control board. Includes a FixAtlas AI walkthrough, FAQ, and cost estimates for every fix.
AppliancesBoth fridge and freezer warm, or freezer fine but fridge cold? Work the symptom-pattern table, then the 4-step field diagnostic — condenser coils, evaporator fan, thermistor, compressor start relay. Includes a FixAtlas AI walkthrough, safety warnings, and cost estimates for every fix.
AppliancesDishes coming out gritty or spotted after a full cycle? Work the wash-side diagnostic in five ordered steps — spray arms and filter first (zero-cost fixes), then door seal, wash pump, and the detergent / dispenser / rinse-aid setup. Includes a FixAtlas AI walkthrough, safety steps, and cost estimates for every repair.
AppliancesStanding water in the tub? Work through the drain-side sequence — from a clogged filter (DIY, zero cost) to a failed drain pump. Includes safety steps, multimeter diagnostics, and cost estimates for every repair.
AppliancesWalk the ordered repair steps — basket & filter cleanout, air gap clear, drain hose flush, check valve test, and drain pump replacement — with parts costs, safety warnings, and a parts table ordered by confirmed fault.
AppliancesStanding water in the tub? Work through the drain-side diagnostic sequence — from a clogged drain filter (DIY, zero cost) to a failed drain pump motor. Includes safety steps, lid switch diagnostics, and cost estimates for every repair.
AppliancesWater under the fridge? Almost always a clogged defrost drain (≈70% of calls), a cracked drain pan, a loose water supply line at the ice maker, or a failing door gasket. Here's the 7-step diagnostic checklist — with safety steps and cost estimates for every repair.
ToolsiFixit is the go-to for consumer electronics teardowns. But for HVAC systems, commercial appliances, and building equipment, you need something different. Here's the honest comparison — AI diagnostics vs. static guides.