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How Your Central Heating System Works

January 20, 2014

How Your Central Heating System Works

How a Simple Furnace Works

Your central heating or furnace can comfortably heat your home and we take it for granted until it stops working. Our heating system can be a mystery as to how it works, so today we’ll pull back the curtain and reveal in this latest infographic how a simple furnace works to heat your home:

How Your Central Heating Works

About The Author

Bob Jenson

For over 45 years, Bob Jenson has been providing quality heating and air services to the San Diego community.

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Bob Jenson Air Conditioning and Heating

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1715189686

We recently had our furnace replaced with a Lennox Signature. Technician/installer Brandon and installer David were a pleasure to work with. They are professional and responsive to questions. The quality and overall appearance of the installation was impressive.A well done job!

Melissa Padilla

1715145870

Tom, Antonio, Abraham, and Pouria were helpful and professional. They made replacing our heater a stressless process in a timely manor. They worked with us and our busy schedules.

1715108713

Pouria and Conor were great! Super workmanship and attitude.

Mariella Parker

1715098196

We installed our air conditioning and heating system through Bob Jenson's company in January 2023. The service was very thorough where every detail was analyzed through Mike Daluz' who is very knowledgable for what was best for our three bedroom two bath house along with our usage, needs and budget. Once we decided on which product was best and all paperwork was signed, the installation went very quickly and efficiently. The two installers, Luis and Tony were careful in protecting our floors and everything was done with care. The installers explained very clearly how to operate the system. The follow up work with inspection was excellent as promised through the maintenance tech, Marcos Frias. We are very satisfied with the work, the product, and the professional and exceptional staff. Our air and heating unit works very efficiently, compliments our solar, and the results in savings are a win.

1715041393

Cyrus is an excellent technician. Explains things really well. Knowledgable and thorough.

1715038864

We recently had our HVAC unit replaced along with several other necessary repairs, and I must say, the team at Bob Jensen made the entire process seamless and remarkably straightforward. From the initial assessment by Gino, who detected the issues during a routine check, to Tom expertly guiding us through our replacement options, every step was handled with professionalism and clarity.What particularly stood out was the efficiency and professionalism displayed by Abraham and Antonio during the installation. They arrived promptly as scheduled, worked diligently, and conducted themselves with utmost professionalism throughout the process. Moreover, they patiently addressed any concerns I had and took the time to thoroughly answer my questions, ensuring I felt confident in the decisions made.Overall, I wholeheartedly recommend Bob Jensen for all your HVAC needs. Their team's commitment to excellence and customer satisfaction truly sets them apart in the industry.

1714775468

Javier and Luis did an amazing job! Please keep sending them!

1714772950

Last week, my two current Lennox A/C and Heating Systems turned 27 years old. Old enough that they no longer make the refrigerant they use. And you can’t just pump in the new type of refrigerant into an old system. So if your old pressurized system springs a leak, you need a whole new air conditioner. Good luck getting quick replacement system in the peak of summer when you need it that very day. In addition, both of my old systems needed repairs for only the fourth time in 27 years. That’s like only two repairs on each system in 27 years. Bob Jensen technicians had done that good a job in maintaining them and giving me the most for my money all those years.My 3,000 square foot house requires two full systems, one for upstairs and one for downstairs. So Bob Jensen Company offered me a great deal on two brand new Lennox systems and an incredible 3-day installation. What was incredible about a 3-day installation was that the original Bob Jensen installation of both indoor units being replaced were up a narrow, pull-down attic stairway. And then into a cramped, low-ceiling attic location. The two new outside units were no problem. But it took some careful planning, some mighty fine talent and superb expertise to get the two old units out of the attic and install the new units up there in such a short time. I believe it took 5 or 6 days to accomplish a similar feat 27 years ago. Of course back then, that was a first time installation. Although this was merely a replacement, there were no old units to remove from the attic 27 years ago. But still, I marvel that the feat is even possible, let alone so quickly. As expected of the Bob Jensen team, everything on the brand new systems worked fine. Plus the new, more efficient systems are less expensive to run and they put out the desired warm or cold air in record time. My family is most happy with the results in every respect. So I just have to thank the two expert installation technicians. Javier Zambada and Abraham Brito. Thank you so much.

1714687380

Cristian Molano was an outstanding and very detailed technician. I plan to ask the office to send him again.Curt & Arlene Wright

1714670273

Bob Jenson has been a great company to work with. I’ve had my unit for a year and the technician that came out for maintenance care it Marcos Frias was very helpful and informative on how to keep the unit in tip top shape !

Roger Scheuerman

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1714580050

Antonio and Javier did a fantastic job and my new furnace is as nice as they are. Difficult attic area to access. They also delivered and set up the ladder for the city inspector.

Earlene Hollmichel

1714516360

Bob Jensen installed air conditioning in my house. They did an excellent job. The Crew were terrific. I would definitely recommend for service or installation.Javier Zambada performed a maintenance check on my heating system today. He was courteous, friendly and made a point of informing me of any problems and made great recommendations. I would honestly recommend Bob Jensen H/C for any work. 4/16/2024**Another outstanding job by technicians Brian and Antonio installing a new forced air furnace. They did an outstanding job. They were friendly and professional. Each immediately introduced themselves and finished their installation on a professionally and efficiently.Definitely recommend Bob Jensen Air and Heating.Earlene Hollmichel

1714428070

I decide to have Bob Jenson add a mini split to one additional room in my house because the moment I spoke to Michael, I felt he knew what he was talking about. He explained how the work will be done and it was exactly how he told me! He was answering all my questions while the installers were at my home working. Brandon was very flexible and in top of everting while he was working, He installed the unit where I told him even though it was a little complicated for him, since I have children all over the backyard and I wanted to make sure the unit will be safe and not in the way for the children to play, he knew how to work it out without complications. David is one of the installers it's a plus that he speaks spanish, since I was able to understand all the instructions in details. I appreciate the hard work Bandon and David did, and the mini split works flawlessly.I will be using Bob Jenson again for the service in my home AC.

1714424179

Great company and been with them for several years. I called them today on short notice and they sent out a technician within an hour or so. Cyrus the technician was awesome. He serviced the unit and performed his inspection quickly and had the ac running great. I couldn't ask for better service. Thank you all!!

1714242110

I have the maintenance plan with them. Service is great and everyone I’ve spoken with is so nice. Pouria was on time and professional. Thanks

1714074058

Very happy with my annual A/C maintenance service call. Conor and Pouria did a great job and were very professional and friendly.

1714010425

This review is for Pouria who also did a service today. He is always polite, made sure I didn’t have further questions. He too is an excellent technician!

1713986530

We have bought AC and are purchasing a heat pump fromBob Jensen. Christian is an excellent service technician who inspected our system and recommended a replacement. We appreciate his attention to detail and his thorouness as well as his professionalism. Thank You!

1713808356

Cyrus did a great job servicing the heat pump at my rental in El Cajon. He was very professional, explained everything thoroughly and was very polite to my tenant and me. Kudos!

1713802052

Pouria Ziari arrived on time and was knowledgeable and efficient at servicing my air conditioning. He was also courteous and personable.

1713636469

Bob Jenson Air Conditioning & Heating has provided me with excellent service for many years. Cyrus and Cristian were at my home recently for a maintenance visit. They were both professional and polite. It was a pleasure to deal with them.

Kenneth DeLaBarre

1713636175

Pouria our tech was on time, friendly, professional, and took his time to explain his process. Appreciate the high level of service and respect he brought to our home. We received honest fair assessment about our 20 year old system and quality preventative maintenance. Will definitely continue using Bob Jenson’s AC service.

Adrian Renteria

1713572024

Javier Zambada and David Brito, Helped setup my AC and heater. Made the process so easy and understandable. Thank You Guys So Much.

1713570657

Javier Zambada was very professional knowledgeable and helpful. He was the first to spot a problem with my old Furnance and helped me chose a new one. He also solved the problem with my water heater. Great guy.

1713549473

Pouria is an excellent technician, at Bob Jenson, he was prompt, courteous, and very knowledgeable. I was really impressed how much he loves his job and wants to grow within his field. He went out of his way to help me move some items, super kind. Thanks Pouria!

1713480253

We have been a long time Bob Jensen customers. Today we had our system serviced by Pouria. He was great. Professional and very thorough. We are happy that the service is still terrific with the new ownership.

1713390816

Pouria was great. He was prompt, professional, and reviewed our service options thoroughly.

1713383081

We had a problem with our AC/Heater. Mike, Pouria, Antonio, Brian and Brandon came. They troubleshoot and made a recommendation. They removed the old unit and installed a new one. They answered our concerns. The installation went well. They were very professional.

1713374942

Excellent customer service and workmanship. We have used Bob Jensen for years and have been happy with their services. Most recently their technician, Pouria, evaluated our AC and heating system to ensure its safety and maximize its performance and efficiency. Highly recommend!

Bonnie Pequignot

1713285501

Javier Zambada was an excellent technician. He explained what services he was providing and informed us about the status of our system.

1713217585

Portia was great

1712853817

The team of Javier and Abraham did an excellent major installation and cleanup job at our house yesterday. They were professional, knowledgeable and personable! Thanks for your many years of service at our home.

1712682715

Pourian was incredibly professional! Did a thorough job cleaning my AC system.

1712608843

This morning Bob Jenson's crew arrived to install a new furnace in our attic. The crew Jorge Curiel, Abrahan Brito and Brandon Millburn arrived a few minutes ahead of schedule and started right to work. The job was finished and the area was cleaned up. they were very professional, polite and all in all a good crew that I would be happy to have do any work we need in the future.

1712598405

Update on 04/08/24Received a welcome and surprise visit from Marco and Pourvia who were taking care of other matters in the building. They asked if I wanted my maintenance done today and I accepted. I am blown away by their proactive approach in going above and beyond for me! Thank you!!I have been a customer with Bob Jenson for nearly 3 years.I always feel secure and safe in the hands of Marcella when I call in. She always makes sure my questions are answered and appointments are booked asap. I've appreciated her assistance over these past 3 years.Sammy and Marcos are consistently wonderful and patient when they come by to do maintenance or check on issues.Thank you so much for the awesome service. I highly recommend Bob Jenson to anyone interested in mini splits or hvac systems.

1712595710

Javier is great. Very professional and an all around good guy. Highly recommend!

1712351272

Thank you to Pouria from Bob Jenson for his excellent work on our heating system. Pouria was efficient, professional, knowledgeable and extremely pleasant. Highly recommend.

1712346481

Extremely helpful!!Javier ZambadaAbraham Brito

1712344258

Pouria was very thorough in inspecting our 25 year old heating system today. He took many pictures and explained in detail some concerns regarding our heat exchanger. He was very patient in answering all our questions. We very much appreciate the maintenance services provided by Bob Jenson Air Conditioning and Heating.

1712262016

Every time a Bob Jenson rep comes out to do my HVAC maintenance they do a wonderful job, they are polite, speedy, and make sure the system is running smoothly. They don't overlook anything.Pouria came out most recently for regular maintenance and was very kind and professional, he was respectful of my space and my pets. He was quick to point out a potential issue, explain what could go wrong, and made sure to let me know it would be addressed quickly so that the system wouldn't have any issues. He made sure to clean up dust and smudging from changing the filter and didn't leave any mess behind.I'm always so impressed with the service reps from Bob Jenson and this was no exception. Thank you Pouria!

1712186984

Bob Jensen has done a wonderful job of installing and now maintaining our a/c unit. Cyrus Thomas is a service professional who is a good communicator.

1712182577

Keeping my Heating/Air Conditioning system working requires regular maintenance. Pouria, the technician took care of my system. Thanks!

1712179788

Cyrus was very helpful in our schedule maintenance! We appreciate his thoroughness in his assessment.

rosalie clayton

1712093055

Pouria was polite, professional, answered all my questions. Very neat and tidy. Greatly appreciated his service.

1712091663

Pouria was my technician today. He was so impressive as a tech. Did everything correctly and efficiently. He was also kind and helpful. He explained everything that he was doing as he went. He made the maintenance process smooth. I truly appreciated everything he did for me. He is an incredible asset to the Bob Jenson organization.

1712081269

Pouria arrived on time and completed an annual inspection of my Bryant Heat Pump. He was very polite and knowledgeable! I would recommend Bob Jenson AC & Heating and of course Pouria.

1712004659

October 19, 2023.. Another outstanding routine service. Cyrusonce again performed the semi-annual maintenance on my newHVAC system. I can always count on a professional, friendly andcomplete assessment from Cyrus. He has been doing service on my systems for many years now and always leaves a positive impression !Summer 2023.. Bob Jensen has installed two HVAC systems over the past twenty years. Their maintenance program is superior and their customer service is outstanding! The repair technicians are very knowledgeable and expert at troubleshooting! Bob Jensen has kept our household comfortable over the years, and we continue to enjoy a professional relationship with them.April 1, 2024...Cyrus just completed the Spring/Summer maintenance assessment on my HVAC system for Bob Jenson. As always, he leaves me confident that the system will perform at its best as we enter the heat of the summer ! Cyrus is a top notch professional that takes pride in his work. He displays a positive and confident approach, and we know we can count on the system working at its utmost efficiency.

1711743540

We have used this company to install a heating/air conditioning unit and they did an excellent job at a very competitive price. We have used them also for many years to regularly check and maintain the unit. Everyone is very professional and personable, and I highly recommend them.Pouria did the routine maintenance today and was excellent: professional, courteous, and knowledgeable.

1711644421

Pouria was on time and figured out our thermostat was broken and replaced it with a new one. He was very accommodating and making sure by the time he left that everything was working properly, and all questions were answered, and very very courteous.!!

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