Triangle Trade Pros
The HVAC Resource Library for Triangle Homeowners
Straight-talking guides written by the technicians who work in Raleigh, Durham, Cary and Chapel Hill homes every day. No fluff, no scare tactics, just what we would tell a neighbor.
Latest articles
3 guides.
HVAC Warranty Guide: Parts, Labor & Home Warranty Coverage Explained
What manufacturers actually cover, why registration doubles your parts coverage, how labor warranties differ, and where home warranty plans leave you paying out of pocket.
How Old Is My HVAC? Serial Number Decoder & Warranty Guide
Decode the serial number on Goodman, Trane, Carrier and Lennox units in about 60 seconds, then find out whether the unit is still inside its parts warranty window.
The Five Systems We Measure to Make Your Air Safer to Breathe
Most homeowners think they have a temperature problem. What we usually find is a humidity, airflow, or filtration problem wearing a temperature problem like a costume.
Step-by-step troubleshooting guides
Free diagnostic walkthroughs. Each one tells you what to check, what it means, and when the job needs a licensed tech.
AC Not Cooling? Step-by-Step Troubleshooting Guide
AC blowing warm air or not cooling your Raleigh home? Walk through this 7-step HVAC troubleshooting flowchart before you call a technician.
Heating & CoolingFurnace Not Heating: 8-Step Troubleshooting Flowchart
Furnace running but no heat, or won't turn on at all? Follow this 8-step furnace troubleshooting guide for gas and electric furnaces in Raleigh NC.
Heating & CoolingFurnace Making Strange Noises: What Each Sound Means
Furnace banging, booming, squealing, or clicking? Learn what each furnace noise means, which ones you can ignore, and which need a pro immediately.
Heating & CoolingHeat Pump Not Heating or Cooling: Troubleshooting Guide
Heat pump not heating in winter or cooling in summer? Diagnose common heat pump problems including defrost cycles, reversing valves, and auxiliary heat.
Air QualityHigh Indoor Humidity: Causes and What To Do Next
House feels sticky or muggy even with AC running? Diagnose high indoor humidity causes and learn when a whole-home dehumidifier is the fix.
Air QualityMusty Smell from Vents or House: Diagnosis Guide
Musty or moldy smell coming from your AC vents or house? Walk through the top 6 causes and learn which need a technician versus a DIY cleaning.
Tools and resources on this site
Everything a Triangle homeowner can use, from a free diagnosis to financing a new system.
Interactive Troubleshooting Guide
Answer a few questions and get a diagnosis for your AC, furnace, heat pump, or humidity problem.
Start the diagnosticDIY HVAC Quick-Fix Playbook
The $27 step-by-step playbook that walks you through the fixes a homeowner can safely do alone.
See what's inside the PlaybookRepair & Installation Services
Flat $129 diagnostic with a written diagnosis you keep, across HVAC, plumbing, and electrical.
Browse all servicesFinancing & Current Offers
Monthly payment options for new systems plus the seasonal promotions running right now.
Check financing optionsRead enough? Let's get it fixed.
Flat $129 diagnostic, no trip charge, no hourly billing, and the written diagnosis is yours to keep.