How to replace an HVAC air filter, including why it's important, signs it needs changing, and proper replacement procedures. Troubleshooting & Fixes

Frozen AC Evaporator Coil (Troubleshooting & Fixes)

Seeing ice on your AC unit? Your AC probably isn't cooling right. A veteran tech explains why your evaporator coil is frozen and how to fix it fast.

Furnace Making Various Strange Noises? Troubleshooting & Fixes from a 25-Year Vet

Furnace making strange noises? A veteran HVAC tech explains what banging, whistling, or rattling means and how to fix it. DIY tips and when to call a pro.

Furnace Ignitor Not Glowing? Troubleshooting & Fixes from a 25-Year Pro

Furnace ignitor not glowing? An old pro with 25+ years in the field shows you why it's happening and how to fix it, from DIY replacement to a pro call.

Programmable thermostat fails to retain programmed temperature schedules or settings, resulting in improper HVAC system operation and inconsistent indoor temperatures. Troubleshooting & Fixes

Clogged HVAC condensate drain line, leading to water backup and potential system shutdown or water damage. Troubleshooting & Fixes

How to replace an HVAC air filter, including why it's important, signs it needs changing, and proper replacement procedures. Troubleshooting & Fixes