HVAC & Air Quality Troubleshooting
Answer a few quick questions to pinpoint your problem, or jump straight to a step-by-step guide. Most homeowners solve their issue before ever picking up the phone.
Interactive Diagnostic Tool
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Diagnostic step 1
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Heating & Cooling
Detailed walkthroughs for the most common HVAC problems in the Triangle.
AC Not Cooling: DIY Troubleshooting Before You Call a Pro
If your air conditioner is running but not cooling your Raleigh-area home, most causes are simple to check yourself. Work through the steps below in order, most homeowners identify the problem in minutes.
Read guideFurnace Not Heating? Run These 8 Checks Before Calling a Pro
A furnace that won't heat is almost always caused by one of eight things, and most homeowners can identify which one in minutes. Work top-to-bottom; if you hit a warning box, stop and call a pro.
Read guideFurnace Noises Decoded: Bangs, Booms, Squeals & Clicks
Furnaces aren't silent, but new noises always mean something. This guide covers the six sounds we get called about most and tells you which are urgent.
Read guideHeat Pump Troubleshooting: Cooling and Heating Mode
Heat pumps behave differently than furnaces or straight ACs, some 'problems' are actually normal operation. This guide separates real faults from expected behavior.
Read guideIndoor Air Quality
Humidity, odors, and airflow problems, diagnose the root cause.
High Humidity in Your House: Troubleshooting Guide
Ideal indoor humidity is 40–55%. Above 60% you'll feel clammy, sleep worse, and grow mold. Raleigh's humid summers make this our #1 indoor-air-quality complaint.
Read guideMusty Smell in Your House? Here's How to Find the Source
A musty odor almost always means moisture plus organic matter, the recipe for mold or bacterial growth. Track down the source before it turns into an air-quality or health problem.
Read guideSteps didn't solve it? We're 5 minutes away.
Triangle Trade Professionals serves Raleigh, Durham, Chapel Hill, Cary, and 50+ nearby ZIPs. Same-day appointments most days.