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 Ian, Toronto on Twintech Heating and Cooling

The term excellent or incredible does not seem high enough praise for the Twintech Heating and cooling company that recently replaced our 15 year old furnace. To start with, the response from Dave at Twintech to our original pricing request was the quickest and most professional of the 5 prices we received which included two of the primary natural gas providers. The Twintech pricing was the most competitive by a considerable margin.
We had Dave visit our home to confirm all pricing which he did and scheduled us for next day installation which was not offered my the majority of the other providers.
The installation; the team arrived on time and provided coverings to all of the hardwood flooring and stairs and proceeded with the removal and reinstallation of the new furnace, the workers predicated six hours and were completed in five hours. I have to mention how courteous and polite the workers were each time we interacted with them from start to finish.
The final result was amazing, all materials were cleaned up and removed from the house and the workmanship very impressive.
One feature that really stood out for me which shows a high level of professionalism was that we had various condensation hoses from the furnace , humidifier and an air filtration unit meeting at the one drain, the installation crew ran PVC tubing including elbows along two sides of the furnace to guide the hoses into one PVC tube at the drain, it looks great!
When the install was completed and tested the Twintech technician guided us through the features and recommendation's for care of the new furnace.
We highly recommend Twintech to anyone for the outstanding service provided to us.

by Stephen, Pickering on Twintech Heating and Cooling

I didn't hesitate to call Twintech in for a 2nd time as they did an outstanding job installing my new furnace last year. This time my 18 year old air conditioner was on its last legs. Greg and the team are top notch, highly skilled technicians. The job was executed in a timely and professional manner. Greg was extremely thorough and went the extra mile to make sure everything was operating efficiently. Lastly, Dave is a true gentleman and really made the customer experience pleasurable and worry free. Always remember that good work ain't cheap and cheap work ain't good.

by Derek, Whitby on Twintech Heating and Cooling

It's so hard to find solid companies these days, but I was very pleased to find one in Twintech. Greg and his crew were very clean, respectful and professional. We were most impressed at how all the things they said they would do, were done. Sounds strange, but usually when a contractor comes to your home they say they will take care of this and that, make sure this is done, etc but when the work starts you have to constantly remind them of your previous discussions. Greg ensured every item he said he would do was done, no reminders required. The work was done right, at a fair price and on time. We will be sure to call them when our A/C unit dies (fingers crossed that's not going to happen too soon :) )

by Patrick, Toronto on Twintech Heating and Cooling

Replaced our aging hot water tank with a tankless system. Excellent work, fast efficient and clean.

Walked us through the new system and recommended maintenance schedule.

This is our second time working with TwinTech and we are very happy with the quality of their work and professionalism.

by Troy, Toronto on Twintech Heating and Cooling

Efficient work and great follow up by the team at Twin Tech. Great product and communication.

by Peter, Pickering on Twintech Heating and Cooling

On coldest night of the year our furnace quit. At 8:40 in the morning Greg arrived and gave us a diagnosis and a recommendation. By 2:30 we had a new furnace and were warm again. Great company. Great customer service. Good reasonable price.

Peter, Pickering

by New Furnace Installed on Twintech Heating and Cooling

Twin tech team was very efficient and prompt. They provided a quote within hours of request and got the job done on time. No disruption to home function. We would highly recommend this team. Job well done.

by John from Toronto on Twintech Heating and Cooling

Our furnace bit the dust, and Twintech came out to troubleshoot and diagnose the problem within a couple of hours. Mitch was super helpful, patient, and answered all of our questions. When we decided to get the furnace replaced, the crew was over first thing the next morning and did a fantastic job. Not only did they complete the job in a few hours, but they cleaned up and respected our house as they went, and answered all of our follow-up questions. I've used Twintech for our HVAC needs in the past and will continue to do so. I'd recommend them to anyone, and it feels good to support a local, family-owned business.

by Ryan k on Twintech Heating and Cooling

Dave and the Twintech team were fabulous from day 1 and helped us through the process to identifying a new furnace and AC unit. This was our first time through this process and Dave did a thorough job explaining all the components and was very patience answering all our questions. Dave provided great insights and fair pricing.

The Twintech team did an awesome installation. Very clean and efficient. I would highly recommended their service.

by Louise in Scarborough on Twintech Heating and Cooling

We had a new Amana furnace installed by Twintech and we were very pleased with the installation. It is nice to have a warm house again.

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