HVAC tips & guides.
How to Add HVAC Zoning to an Existing System
Learn how zoning is retrofitted into existing ductwork, what equipment it needs, what can go wrong, and when a ductless ...
Rooftop Package Unit Maintenance: Schedule and Checklist
A practical rooftop package unit maintenance guide: how often to service an RTU, what to check each quarter and year, sa...
How to Add Return Air to Your HVAC System
Learn when a home needs another return vent or duct, how many returns you need, where they go, and what a safe, code-min...
Mini Split Condensate Leak: Causes, Fixes and When to Call
Mini split dripping water indoors? Learn the common causes, safe checks you can do in minutes, and when to turn it off a...
AC Low Voltage Issues: Causes, Safe Checks and When to Call
AC low voltage issues explained: why a thermostat goes blank, what a 24-volt control problem looks like, which checks ar...
Power Stealing Thermostat Problems: Causes and Fixes
Thermostat rebooting, short cycling or losing Wi-Fi? Learn how power stealing causes these problems and how a C wire or ...
Multi-Zone Mini Split: How It Works, Sizing and Cost
Learn how a multi-zone mini split works, when it beats single-zone or VRF, and what to check on sizing, line sets and co...
Refrigerant Line Sweating: Normal or a Problem?
Is your refrigerant line sweating? Learn which line should sweat, what causes heavy dripping, what you can check safely,...
How Often to Change Your HVAC Filter: A Schedule by Filter Type
How often to change your HVAC, AC or heat pump filter: a schedule by filter thickness, pets, allergies and Los Angeles c...
UV Light Not Working in Your HVAC? Causes and Fixes
HVAC UV light not turning on? Learn the safe checks to run first, how to tell a dead lamp from a ballast or power proble...
Heat Pump Noise: What's Normal, What's Not, and How to Fix It
Buzzing, humming, rattling or gurgling? Learn which heat pump noises are normal, which signal a problem, and how to redu...
High-Velocity HVAC: How Small-Duct Systems Work and When They Fit
How high-velocity (small-duct) HVAC works, its pros and cons, how it compares with ducted heat pumps and mini splits, an...