The Cool Journey: A Brief History of Air Conditioning and Refrigeration Air conditioning and refrigeration have come a long way...

Understanding Residential Electrical and Mechanical Inspections: What Homeowners Should Know At Caledonian Mechanical, we believe in helping our customers understand...

Understanding Title 24 HERS Duct Testing for Your HVAC System If you’re upgrading or installing a new HVAC system in...

Gas-Electric Package Furnaces (Including Ultra-Low NOx): A Simple Guide for Our Customers If your roof has a gas-electric package unit,...

The Refrigeration Cycle If you’ve ever wondered how your AC or refrigerator actually makes things cool, here’s the simple truth:...

Planned Maintenance Residential Heating & Cooling Why Caledonian Mechanical Is Fresno County’s #1 Choice for Planned Maintenance Simple, straight talk...

The Everyday Guide to Refrigerants (and Where the Industry’s Going) If you’ve ever glanced at an HVAC sticker and wondered...

Guide to HVAC Load Calculations (Done the Caledonian Way) When you replace or upgrade your heating and air system, the...

Getting Ductwork Right: Why Proper Insulation and Sizing Make All the Difference At Caledonian Mechanical, we’ve seen it all: from...

Commercial Ice Machines 101 What goes wrong, why it happens, and what a “full chemical clean” really means By Caledonian Mechanical...

Why Caledonian Mechanical is the Smart HVAC Choice in Fresno & the Central Valley Hi Fresno & Central Valley neighbors,...