All 9 posts
How Air Conditioning Actually Works, Without the Jargon
An air conditioner does not make cold, it moves heat outside. The four parts that do it, what each one fails like, and why that matters when you get a quote.
September 10, 2026
Air Handler Basics for Pasadena, CA Homeowners
A blower, a coil and a filter rack in one cabinet. How to tell an air handler from a furnace, where yours is likely to be, and what you can check.
September 10, 2026
What the Decibel Rating on an AC Unit Really Tells You
The spec sheet number is sound power, not what reaches your ear. How the scale works, what Pasadena's noise rules say, and why placement beats the rating.
September 10, 2026
No, Your Water Heater Isn't Part of Your HVAC System
A water heater is plumbing, a separate licensed trade. What HVAC does cover, the one place the two systems touch, and who to call when either one quits.
September 10, 2026
R-22 or R-410A: How to Tell, and What It Means for Repairs
The data plate on the outdoor unit names the refrigerant. R-22 production has ended, and the newest EPA rule restricts new equipment, not yours.
September 10, 2026
Apartment AC: Window, Portable, or a Mini Split?
Check the lease and the window type first, then the amps on the data plate against the circuit. Sizing, drainage, and where a mini split is the better fit.
September 10, 2026
Air Handlers Explained: What They Do and Where Yours Is
The indoor half of a split system: blower, coil, filter rack. What it does through a cycle, where it hides in a Valley home, and whether you can reuse it.
September 10, 2026
How Old Is My AC? The Data Plate Has Three Answers
Age from the serial number, tonnage from the multiple of six in the model, and the refrigerant. R-22 on that plate turns any leak into a replacement talk.
September 9, 2026
HVAC diagnostic fee: what the $69 visit actually covers
Four steps from the phone call to the written quote, what gets tested, and why the fee is credited back to you if you go ahead with the repair.
September 9, 2026Schedule service
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