EVS Mechanical Blog
Bay Area HVAC advice, straight from the technicians.
Troubleshooting guides, repair-vs-replace frameworks, and installation basics for homeowners across Santa Clara County and the greater Bay Area.
- AC Repair
AC Won't Start, Fan Not Spinning, or Shutting Off After a Minute? Here's Why
Is your AC turning on then shutting off, or the fan won't spin? Learn the most common causes — capacitor, contactor, frozen coil, overheating — and when to call an HVAC tech in Santa Clara County.
Read article - AC Installation
AC Repair vs. Replacement: When Is It Worth Fixing in the Bay Area?
Should you repair or replace your AC? Use the age, cost, and refrigerant rules to decide. San Jose and Bay Area HVAC contractor breaks down when replacement actually saves money.
Read article - Mini Split Installation
Mini Split Installation in Cupertino: Cost, Process, and HOA Approval
Planning a ductless mini split in Cupertino? Here's what single- and multi-zone systems cost, the step-by-step install process, and how to get HOA approval. Local HVAC contractor explains.
Read article - AC InstallationUpdated May 1, 2025
Do Portable Air Conditioners Actually Cool a Room?
Portable ACs cool rooms — but have limits. Learn how they compare to central AC and mini splits, when they make sense, and when to upgrade. Bay Area HVAC contractor explains.
Read article - Furnace RepairUpdated May 1, 2025
Does a Gas Furnace Work Without Electricity?
Modern gas furnaces need electricity to run — even though gas is the fuel. Learn which components need power, what happens during an outage, and your backup options.
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