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The Evolution of the Air Conditioner

July 20, 2015

The Evolution of the Air Conditioner

We might not think much about how easy it is to turn down the temperature on our thermostats and enjoy cool, conditioned air. At one time this “luxury” didn’t exist! We go back in time to follow the invention of the Air Conditioner down thru history to our modern day. Check out our latest, fun infographic!

Infographic that shows the evolution of air conditioning throughout history

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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4.9

Based on 714 reviews

Bob Jenson Air Conditioning and Heating

4.9

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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.

1713630010

Great customer service from Pouria. On time, polite and efficient. So good to be able to have trust in a company and their employees!

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!

Earlene Hollmichel

1713290664

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. 4/16/2024Earlene Hollmichel

Bonnie Pequignot

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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.!!

1711572643

Pouria was very polite and knew what he was doingExcellent employee

Stephanie Vesper

1711558018

Our technician, Pouria, was very thorough and polite. Pouria took pictures before and after our service and asked if we had any questions before he left. We would definitely recommend Bob Jenson and their technician to others.

1711169146

03/22/24: Had a new heater/motor/duct work installed by Brandon, Antonio and Abraham today. They were awesome! Heater works so much better! Brandon talked us through how to use the smart thermostat (very easy to use). We've been with Bob Jenson for years and are always happy. These guys gave us the same service we've come to expect. Thank you!(A while ago)...Roy Villa was out again this year and service was great! I always have a great experience with Bob Jenson Air Conditioning.Roy Villa is awesome!! He was professional, highly competent and left his work area super clean.

1711127812

Updated: another great experience with Bob Jensen’s team (this time Pouria) for our heating / furnace maintenance. Super friendly, professional, cleaned up after himself and got everything checked very efficient. Highly recommend the team for install, repair and servicing. Thanks!———Updated: just had a service visit from the Bob Jensen team (Marcos F) as our system wasn’t cooling all of a sudden. As always the team is incredibly professional and gives great service. Thanks to Marcella for fitting in our emergency visit and for Marcos for diagnosing and testing everything. Turns out it was low refrigerant and is all sorted. Hoghly recommend the company and their technicians.———Excellent first experience with the Bob Jenson team. Tom, our technician, was on time, followed rigorous health protocols, explained everything he was doing. He cleaned up following all the work. Definitely will be using as our go to company.

1710980967

Excellent job performance overall. Tony, Luis and Mike are very professional and exceeded my expectations. I will recommend this company to my friends.

1710868605

Pouria did an excellent job.

1710848463

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

1710791766

We just had our twice yearly inspection and maintenance on a HVAC system that was installed a couple of years ago. The system is working perfectly and Cyrus who performed the service was exceptional. Very professional, on time and very knowledgeable. This has been the 2nd time Cyrus was out here and we couldn't be more satisfied. Oh...the new trucks and uniforms look great.Thanks Steve Crummett

1710698178

I would highly recommend this company. We have a mini split h-vac that is serviced by this company. On the most recent visit the technician Pouria did an excellent job, he was very thorough, knowledgeable and took the time to answer all my questions.

1710530654

We have been with Jensen for over 5 years. They installed a split system in our house in east county. We pay for a maintenance plan, so a technician comes twice a year to clean the filters and check the whole system.Yesterday, Pouvia was our technician. He provided excellent service! He was on time, friendly, efficient, and conscientious! He took the time to explain what he was doing and showed me a picture of our filters before and after cleaning! What a big difference! Pouvia also was careful to cover his shoes with covers each time he came in our house, to protect our carpets from dirt. I'm glad we continue to do business with Bob Jensen Heating and Air Conditioning!

1710529322

I need to give a big shout out to all the individuals that helped with the replacement of my old heater/air conditioner. First CyrusThomas came to service my unit, noticing it was not working well. On the same day Mike Da Luz was able to come out and give me an estimate. This week Luis Garcia with his crew: Jorge Curiel and David Brito came out and in two days removed the old unit and put in a new, more efficent unit along with new air ducts. It was a lot of hard work but they were very professional and curteous.It helps when there is a good, cohesive group of individutals working together. Louis thank you for taking the time to show me how to navigate the thermostat and new app for my phone.

laurie sorenson

1710517652

Pouria came right on time this morning. He was very professional and thorough. Thank you for providing great service

1710390824

Great service at work and at home! Marcos came by this morning and checked everything out—courteous, funny and respectful of my (sometimes) clean house!*****Had a maintenance check of our home cooling system today by Pouria; thorough, polite and honest!! Another 5⭐️’s!!!

1710382024

Pouria was very friendly, efficient, respectful & professional.

1709943840

Cyrus Thomas was awesome! He really took his time to make sure that everything worked well! It was a great experience!

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