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HERE ARE THE BASICS ABOUT AN HVAC SYSTEM:

by Karen Larson

1.  AN ‘HVAC’ SYSTEM CONSISTS OF A HEATER, EVAPORATOR COIL, CONDENSING UNIT AND DUCTWORK.

2.  THE EQUIPMENT INSIDE YOUR HOME OR OFFICE IS USUALLY CALLED THE ‘HEATER”. ‘FURNACE’ IF YOU USE GAS TO OPERATE IT OR ‘AIR HANDLER’ IF YOU USE ELECTRICITY TO OPERATE IT.

3.  THE EVAPORATOR COIL IS ALSO IN THE HOME/OFFICE. THE EVAPORATOR COIL IS INSTALLED NEXT TO THE FURNACE FOR A HORIZONTAL APPLICATION SUCH AS IN THE ATTIC OR ON TOP FOR A VERTICAL APPLICATION SUCH AS IN A CLOSET.

4.  CONDENSING UNIT – SOMETIMES REFERRED TO AS THE ‘AIR CONDITIONER’.

5.  THE DUCTWORK IS 90% OF THE TIME LOCATED IN THE ATTIC/CRAWL SPACE OF THE BUILDING.

6.  IF YOU HAVE A GAS FURNACE IN YOUR HOME/OFFICE, CRACKS CAN OCCUR IN THE HEAT EXCHANGER AND LITERALLY FIRE CAN “ROLL OUT” AND BE VERY DANGEROUS. GAS FURNACES TENDS TO HAVE A LONGER LIFE EXPECTANCY THAN AIR HANDLERS.

7.  BECAUSE THE EVAPORATOR COIL IS LOCATED WITHIN THE AIR HANDLER, IT IS VERY IMPORTANT TO KEEP YOUR AIR HANDLER CHECKED – WHAT IS REALLY BEING LOOKED AT IS THE EVAPORATOR COIL.

8.  THE EVAPORATOR COIL. THIS IS THE MOST SINGLE PIECE OF THE SYSTEM THAT IS KNOWN FOR ITS FREON LEAKS. FUSING COPPER AND ALUMINUM TOGETHER IS NO EASY TASK. USING THE CORRECT FILTER AND CHANGING YOUR FILTERS HELPS KEEP YOUR EVAPORATOR COIL CLEAN. KEEP YOUR EVAPORATOR COIL CLEAN IS THE NAME OF THIS GAME. STILL WILL NOT PREVENT A LEAK, BUT WILL HELP IN THE LONG RUN.

9.  THE CONDENSING UNIT HAS MANY PARTS – THE COMPRESSOR SITS IN THE MIDDLE AND I REFER TO IT SORTA AS THE “BRAIN”.

10.  COMPRESSORS PUMP FREON GAS – IF RESTRICTION IS CREATED ANY WHERE IN THE COPPER LINE – IT WILL CAUSE THE GAS TO TURN INTO LIQUID AND CAN’T PUMP LIQUID WHICH WILL ‘FLOOD’ THE COMPRESSOR.

11.  AROUND THE CONDENSING UNIT IS ANOTHER COIL – IT IS CALLED THE ‘CONDENSER COIL’. YES, FREON RUNS THRU THIS COIL AS WELL AND IT MUST BE KEPT CLEAN. HOWEVER A LITTLE EASIER TO WASH IT SINCE IT IS LOCATED OUTSIDE.

12.  IF A CONDENSER COIL ISN’T CLEAN – IT CAN’T EXPEL ITS HEAT. FREON EXPELS ITS HEAT AS IT FLOWS THROUGH THE CONDENSER COILS. WHEN FREON IS IN GAS FORM, IT ABSORBS THE HEAT AND THE PROCESS BEGINS ITS CYCLE ONCE AGAIN.