Furnace and Air Conditioner - How Do They ACTUALLY Work?

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Furnace and Air Conditioner - How Do They ACTUALLY Work?

Posted On: February 14, 2018

Furnace and Air Conditioner - How Do They ACTUALLY Work?

If you do not have any prior knowledge of them, heating and cooling systems are quite complex equipment to deal with. So, if you have not been trained to work on them, it is likely that you will have many questions concerning your air conditioner, furnace, heat pump, and other HVAC equipment. Don’t worry – we are here to help you! 

Furnace: How Does It Work? 
Most people have the idea that furnaces heat homes or businesses, but they have some questions as to how exactly it is done. Furnaces heat a home or a business by warming air and circulating it into the indoor living or work areas. Furnaces can be electric or powered by a heating fuel such as natural gas, oil, or propane. 

In a gas furnace, the system’s ignitor or pilot light fires up the burners in the combustion chamber. These burners produce heat and move into the heat exchanger. The heat then is transferred to the air cycling through the furnace. The heated air is then moved by the system’s blower through the duct system and into a home or business. 

In an electric furnace, on the other hand, the electricity starts the heating process rather than the ignitor or pilot light. Heating elements warm the air instead of a gas burner. Air passes through the electric resistance coils of the heating element, and heat is transferred to the air supply. The blower circulates the heat to interior areas. 

Air Conditioner: How Does It Work? 
There are many users who have HVAC questions about how an air conditioner actually works. This cooling equipment is made up of four elements: the compressor, evaporator, condenser, and expansion device. Indoor air circulates through the system by passing over the evaporator coil which is located inside homes. Inside the evaporator coil is the refrigerant which absorbs heat from the air, and then transforms from liquid to vapor. 

Vaporized refrigerant then moves to the compressor, and this is located outside. The compressor compresses the vapor, thus increasing temperature and pressure. Next, the refrigerant moves to the condenser. The condenser now condenses the refrigerant gas back into its liquid form, allowing heat to radiate out. The metal fins that surround outdoor components allow the heat to be dispersed into the outdoor air quickly. 

The refrigerant moves back to the interior system in a cooled state, still in liquid form. The expansion device now regulates the refrigerant flow going into the evaporator coil. 

Once the heat is extracted from the air in the evaporator coil, the blower then will move the cooled air back into the interior spaces. This process is repeated until the desired temperature has reached the indoors. 

For your HVAC needs and inquiries, our team of experts here at Twintech Heating and Cooling are more than willing to help! Visit our website today or give us a call. 
 



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See What Our Customers Are Saying:

by Nancy H. from Oshawa on Twintech Heating and Cooling

Work was performed in a clean and timely manner. The furnace and metal work was performed by the Twintech team (did not require separate contractor to do the metal work). Energy audit was arranged and promised rebates were received. The overall price was very competitive. We have recommended Twintech to several of our friends and family. Awesome job.

by Syd from Whitby on Twintech Heating and Cooling

Grant and Greg installed a heating and AC system in our new Linwood post and beam home. Post and beam can be challenging structures for running ductwork and their high ceilings and open concept frequently frustrate efforts at balancing air flow and controlling temperatures. But these guys did it and did it right the first time. Even the building inspector was impressed with what he saw. More importantly, the boys brought a high degree of trust and integrity to the job. Something in short supply these days.

by jenner iksmom from Oshawa on Twintech Heating and Cooling

Very polite and professional. They removed my o
ld furnace and A/C and installed my new ones. They were efficient and thoroughly cleaned up when they were done! I would highly recommend them!

by Rob from Toronto on Twintech Heating and Cooling

Pro from start to finish. They were able to fix my gas fireplace at very little cost as well.

by murray mcmichael from Ajax on Twintech Heating and Cooling

Excellent installation very knowledgeable gentlemen! Would highly recommend them to all my friends for any hvac work !

by Private User from Private User on Twintech Heating and Cooling

I have used Twintech many times over the years. They always arrive quickly and get the issue fixed. The most recent incident was when my air conditioner broke last week I called Greg at 11:30am and he was at my home by 2:30pm he had the unit fixed by 3:30pm. Twintech are very reliable and honest and they are experts in the field. I have already recommended them to many of my friends. I would not use anyone but them for my heating and air conditioning issues.

by Kate A in Pickering on Twintech Heating and Cooling

I would highly recommend these guys, professional, fast and competitive pricing. I moved into this place with no working AC unit with a 8 month baby, he was able to come with in a week to fix even in the busy summer days. He really values his customers , I am already recommending to my neighbors.

by Private User in Whitby on Twintech Heating and Cooling

Very impressed they arrive to quote even though I had forgotten to call them back to confirm date & time. They showed the day before installation to deliver the unit. Returned the next day as promised at 9am. Project was completed in a professional manner. They even fixed a few things that they noticed were not installed correctly, or to code by previous heating & air contractors we had at our residence before. Would recommend this company to everyone!

by Private User from Bowmanville on Twintech Heating and Cooling

Greg removed old oil furnace and oil tank from basement relocated new Napoleon propane furnace to allow duct work to be rerouted to a much more suitable location. Moved air conditioner to the new furnace. Dave recommended two available grants to assist with cost. They kept to their original quoted price which was substantially lower than a competitors for the same furnace and work. They completed the work as stated when stated and left the area clean and tidy. We are very pleased with the outcome.

by astephenson in Oshawa on Twintech Heating and Cooling

Twintech installed a Goodman furnace and ac init. Very professional install, both units are working well.

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