Skip to main content

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.

Request Service

Please fill out the form below to request an estimate or schedule service.

"*" indicates required fields

More Articles From Bob Jenson

More Articles

Bob Jenson 6207005f

September 30, 2024

HVAC Repair vs. Replacement | What’s the Best Choice for Your Home?

Bob Jenson c73eb1b4

August 28, 2024

Navigating the Year-Round Climate: HVAC Tips for Southern California Residents

Out With The Old Ducts

August 22, 2024

Out With the Old: Common Outdated Ducts in Southern California Homes

Bob Jenson c79e1a20

How to Clean Evaporator Coils

Bob Jenson 127ee137

HVAC Considerations for Southern California’s Dry Heat

Bob Jenson b1f446db

Choices for Your Home: Humidifiers and Dehumidifiers

Google Rating

5.0

Based on 907 reviews

Bob Jenson Air Conditioning and Heating

5.0

review us on See all reviews

charles williams

1728529510

A five star review for a job well done. Complete replacement of my aging AC system by Antonio, Oscar and Jorge.Appreciated their care in making this a clean install over an old installation.

Perry Hendrickson

1728344517

I have been doing Business with Bob Jenson for over 22 plus years for my Heating and Air conditioning and Duct work.Just had my third Air conditioner installed today and 4 weeks ago had all my ducts replaced.I more than respect the servicemen that have preformed the work and service. And the Company have treated me fair and honestly.Would like to thank Jorge C. , Antonio G. and their helper today for a clean and professional job.

1728340993

Pouria came for a service call to change and maintain both our furnace and mini split. He was professional and showed courtesy. Recommend highly

1728331391

Cyrus was very professional, friendly, and helpful. He even took the time to help explain how best to optimize using my AC/heating system to account for the difference in cost of electricity throughout the day. He convinced me to order a WiFi thermostat and a couple of window fans to help exchange air as well to further economize my energy usage. Excellent service that was well worth the cost. Thanks.

Cathy Appelquist

1728153479

The tech introduced himself. Let him know what the problem was with my air conditioner. He checked out the equipment and figured out that the water condensation overflow was clogged and showed me the picture. Cleaned it out and made sure the air conditioner was in working order . It is. Thank you for your service and fixing the problem. I have always used Bob Jenson to service my heater and air conditioner. Recommend them highly. 5 star from me

1728086720

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

Perry Hendrickson

1728082589

We have never had a bad service man. They are always very attentive and very thorough and honest. And we have always been treated fairly and honestly by the company and their employees.Today we had employee, Pouria taking care of our service and found him very knowledgeable and polite.Once again Bob Jenson, A job will done.

1728076539

Thank you so much Bob Jenson for your wonderful professional Luis Garcia!! He came out to my parents house today for 2 reasons: 1. The annual covered maintenance on the mini split HVAC System they put in at Mom & Dad's 2 years ago. Luis performed the annual maintenance on all the mini-split system units. 2. Took out the old duct system to get ready for the pier repair under their house! 🏠 He already taped up and sealed all of the register vents throughout the house, too, so no rodents or critters can get in to ruin anything!! Wonderful, professional, great worker, friendly, and cleaned up everything better than he found it!!

1728063183

Pouria maintenance our AC/heater units today and he was very thorough and answered all my questions and provided extremely helpful recommendations. He was very professional and respectful.

1728001638

1728000228

We have experienced excellent service from Bob Jenson heating and air conditioning. Conor let us know the benefits of a new heater and Antonio and George installed our heater in record time. We were very pleased with the service and would recommend Bob Jenson heating and air conditioning.

1727989996

Their technician was thorough, professional and friendly.

Mike Sutherland

1727982517

1727981816

Gino arrived on time, was very friendly and efficient. Went out of his way to get the correct filter for our furnace!

1727821775

Pouria and Tom were very helpful both of them are really friendly and made sure my Air conditioning and heating were all up to date would definitely recommend them!

1727810294

Pouria came out to my house this morning. He was professional, courteous and knowledgeable. Great work. Thanks Teresa A

1727736017

Another quick review: Antonio and Jorge came to add a wireless module to my unit for control via an app. Both were really helpful and professional!

1727728902

Pouria did my yearly furnace maintenance. He was very personable, professional and explained everything he did. He should get a raise.

1727721055

Your tech Pouria was on time, very courteous. Left the space spotless and answered every question. AWSOME employee!

1727719086

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.September 25, 2024...Just met Sal for the first time. He completed the seasonal maintenance service on our HVAC system. Sal was very personable and professional. He explainedwhat he was doing and was happy to answer questions. I feel confident in the inspection he performed. Thank you Sal.

1727486353

Installed a Rheem heating unit and Bosch AC outside unit to replace existing older system that was leaking slowly. Competent and professional. Great attention to detail and better value for money over big box places or those you see advertising about white gloves on TV all the time! This is the 2nd system I have purchased from them and recommend them to anyone who asks without hesitation. Thanks guys!Update: Had both units serviced today 9/5/2023 by Cyrus. Great work as usual. Systems are running great!Update: Pouria serviced system today. Found issue and worked thru it. Great service as always. Thanks!

1727471036

We have used this company for 15 years, they are great. The technitians are always very professional and knowledable. We truly appreciate our tech CYRUS!! thank you for answering our questions and keeping us infotmed of how are unit is. Totally recommend them!

1727462465

Pouria and Tom were somlrofessiona, thorough, and fantastic.

Jeanne Schwertfeger

1727393694

Great job. Marcos frias did a cooling maintenance on my system. And offered quotes to better my comfort in my home. He was polite, professional, and friendly.9:26 2024 Salvador got my furnace working again & hosed my air conditioner for me. A really hard worker an such a pleasant young man. Thank you Salvador

1727390460

The technician Cyrus came out and addressed the issues we were having with our a/c unit, fixed the issues and was very informative as to what had happened and the repairs he made. Great technician who went above and beyond to get our system up and running again! Thank you!

1727388139

Great experienceVery knowledgeable5 star in all areas!!Pouria is his name

1727383510

We have been using Bob Jenson for all our maintenance for years. Always great, friendly, professional service. Again today, Pouria was on time and did a wonderful job. Well done!

1727375580

My technician(pourie?) was very personable and profesional. Took me step by step thru my AC unit.

Larry Stufkosky

1727372728

Very professional service, verified unit in top condition.

1727304119

Pouria Ziari did a great job and was very polite and professional.

1727301425

Pouria was very professional. He did a great job on my AC units. BJHVAC has installed and maintained all of my units since the 1970’s. I highly recommend them.

1727283924

One of our AC units died right before the last heatwave and we're so happy we finally have our AC working again thanks to Conor, Luis, and Abraham. Conor came out to diagnose the issue (and confirmed what other vendors had observed as well), he went through all of our options and we settled on the repair that made the most sense to us at a cost we could afford. Luis and Abraham worked very well as a team to replace our coil and condenser, and add an in-line filter to better improve our air quality and efficiency. Abraham was sent to another job and Luis stayed to complete the work and made sure every last bit of garbage was cleared away and every seam well-sealed, and that our refrigerant was charged sufficiently and the AC starting to cool. He also advised us that if we had any issues to call them and they would come out immediately. They did exactly the quality of work that you would expect from a business but rarely get from other companies these days. We would definitely recommend them, and our neighbor has already engaged with them to maintain their aging systems, after seeing the work they did at our home. If and when our 2nd unit needs to be replaced we will certainly call on Bob Jenson AC and Heating again.

1727220811

Pouria was attentive and thorough.

PhillipElaine Breedlove

1727200317

Sal was the best!

Sonnier Francisco

1727127994

1727127017

Cyrus Thomas was technician that serviced our AC unit and he was excellent. Actually, Cyrus exceeded my expectations. He was very professional and explained in detail everything he did. He even resolved a small issue I had on my unit free of charge, which I appreciated a lot. I highly recommend Bob Jensen for your AC service and especially Cyrus as the technician. Keep up your excellent service.

1727120364

Pouria was great cane quick and help out got the problem fixed

1726943835

Salvador is a great employee...friendly, courteous, and worked hard to keep everything clean from the way in to the way out. He explained everything thoroughly and was very respectful. In a world that lacks friendliness and customer service, Bob Jenson is doing it right!

Michael Benedict

1726883223

Luis and Brian were exemplary and represent your Company well replacing my A/C and repairing my heating system Im happy!

1726797951

Brian and Antonio did an awesome job installing a new furnace and coil. Bob Jensen team responded quickly when my system wasn’t cooling the house during the extreme heat. Tom identified problem quickly and the rest of the Jensen team kept me posted and up to speed the entire time!Thank you Team Jensen for a great job and service!

1726780730

Pouria was amazing! Great technician!!!

1726776537

I just spoke with Tee and she was super helpful to answer my questions.

Geri Breininger

1726774580

Sal and Phil were very professional and went over what they did and how my system was running.

1726755691

We have been using Bob Jenson Air Conditioning and Heating for our home's HVAC system for several years. We purchased and renew every 5 years their maintenance package. Recently, we had a six month check up on our HVAC system. Technician Pouria came out to service our AC. Pouria diagnosed that the evaporator coils had a refridgerant leak. A few days later, Mike, Greg, and Antonio came to our home to get the "ball rolling" on a replacement unit. Greg and Antonio did the replacement work. They worked hard and efficiently. They cleaned up nicely. We now have an AC that is cooling our home properly.Pouria, Mike, Greg, and Antonio were friendly, professional, and provided great customer service.We highly recommend Bob Jenson AC and Heating .

1726715340

Had coil replacement and techs Mike, Antonio and Greg were clean, thorough, and did excellent work. Thank you!

1726697145

Pouria Ziaria did a wonderful job & appreciate the excellent customer service taking care of our air conditioning system!!

1726618518

Brandon and Greg were great installers! The install day went off without a hitch and we love our new HVAC unit! Thank you!

1726613320

Update on 9/17/24:I had a new AC unit installed today by Luis & Brian. They were professional, efficient and friendly. They explained how to operate the unit, cleaned the area when they were done and treated me like family. I'm very pleased with Bob Jensen Air Conditioning and Heating, and highly recommend them.Tom came out next day to repair our A/C unit. He was fast, friendly, extremely knowledgeable and he took the time to clearly explain what the problem was and how he fixed it. The price was less than I anticipated. The office staff was very friendly and I would highly recommend Tom as a technician and Bob Jensen Air Conditioning and Heating.

Heather Trimlett

1726602736

We have been using Bob Jensen Air Conditioning and Heating for years. Very happy with consistent service. Happy to recommend them!!

Charles Gulotta

1726541698

Both Greg May and Conor Higgins came on time to analyze my AC system problems. They were efficient and did a great job of explaining what steps they performed to identify what was needed to make the system functional again. I was given a date of September 16 to install my new Carrier unit. On the 16th they were on Time and made a professional installation! They took care to be sure I was satisfied!

×