San Diego HVAC Blog

News and Helpful Tips from Global Heating & Air Conditioning

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furnace blowing cold air

Why is My Furnace Blowing Cold Air?

You don’t have to be an HVAC expert to know you have a problem when your furnace is blowing cold ...
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fixed speed furnace

Understanding Variable vs. Multi vs. Fixed Speed Furnace

Over time, furnace noise can become part of the family. Boom! The lights dim slightly, and a rush of air ...
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heat pump

How Does a Heat Pump Work?

The cost of heating homes began to rise in the 1970’s, following successive energy crises. First, Western oil supplies shrank ...
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furnace energy

Understanding Furnace Energy and AFUE Ratings

Furnaces are firm favorites among Americans for heating their homes. They do this by heating air, and then sending it ...
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energy efficient

10 Tips to Make Your Home More Energy Efficient

Is there a single person out there who would not wish to optimize energy use, and save on utility bills ...
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air conditioner

A Simple Overview of How Air Conditioners Work

Air conditioning is all around us, yet it is a mystery to most. This is surprising since we have had ...
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