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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 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.

by rcnichols electric in Whitby on Twintech Heating and Cooling

We had Grant and Greg Dainty quote to replace our 20 yr old furnace. I have known them for years and have had other jobs done by them ( AC and Pool Htr). The price was very reasonable and the job was completed in one day.

by Rick. F. in Pickering on Twintech Heating and Cooling

TwinTech was the right choice. Our consultation with Dave set the tone. Professional and knowledgeable, we even received a follow-up call within hours of our install completion, wow! TwinTech arrived as scheduled to install our A/C unit. Within minutes of arrival Greg noted and explained a few out of code faults on our furnace installed by another company, problems fixed, thanks TwinTech. Greg, Grant and "Subaru" Pete were meticulous start to finish. Highly recommended!

by Taresh, Pickering on Twintech Heating and Cooling

Twintech replaced our aging +20 yrs old Furnace & AC with the variable high efficiency Napoleon Furnace matched with the Goodman AC. Sales guy ,Dave was great, gave a no pressure estimate, explained about the Government Rebate program which they took care of completely including arranging the home energy audit. On the scheduled day Greg and his team arrived on time, did a great job and completed the same day , extremely professional and courteous, cleaned up everything , tested the system, Greg took his time to explain the setup. Very impressed with the Napoleon Furnace 9600 which did a great job in maintaining a comfortable temperature last winter and now with the hot weather the Goodman AC cooled the house in much less time than the old AC unit could ever. From start to finish Twintech were great and have no hesitation in recommending them 100%.

by Private User Pickering, ON on Twintech Heating and Cooling

The Twintech team did an excellent job installing our new Goodman air conditioner. They were polite and professional. Greg was knowledgeable and clearly experienced. Thank you Twintech for bringing our cooling system up to current regulations. Job well done!

by Y. M. from Pickering on Twintech Heating and Cooling

Dave from TwinTech was very knowledgeable, professional and thorough in the buying process. He helped us to identify the best furnace for our home and our budget. When we needed a new filter a year later and seemed to have a problem finding the right one, I called Dave up and he delivered a filter to me the next day! The cost was on par with other retailers, but it was this unexpected personal service that really was impressive. The furnace? Works like a charm.

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See What Our Customers Are Saying:

by Aaron on Twintech Heating and Cooling

We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.

by Linda on Twintech Heating and Cooling

Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!

by Robert Rogers on Twintech Heating and Cooling

Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.

by Robert Mizuno on Twintech Heating and Cooling

We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!

by Ruth on Twintech Heating and Cooling

TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!

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