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Can You Open Windows With The HVAC Unit Running?

September 26, 2023

Autumn in Los Angeles paints a vivid picture: from the rustling leaves in Echo Park to the golden sunsets casting long shadows over Venice Beach. As the city transforms, many residents relish the idea of embracing the season by letting in the crisp outside air into their homes. The bustling Farmers Market sees locals draped in light scarves, sipping their warm drinks, and enjoying the seasonal harvest.

However, as the comforts of the cooler weather entice, homeowners are posed with a practical question: “Can I let this refreshing breeze into my home with my HVAC system on?” At Brody Pennell, we often find ourselves addressing this common curiosity.

The Importance Of Indoor Air Quality & Your HVAC System

Indoor air quality, or IAQ, plays a vital role in the health and comfort of Los Angeles residents. As we spend a significant amount of our time indoors, the air we breathe can deeply influence our well-being. From allergens to pollutants, numerous unseen contaminants can compromise the air within our homes, especially in bustling cities like Los Angeles, where urban factors can further degrade the quality.

At Brody Pennell, we emphasize the importance of maintaining superior IAQ, as it’s not only about comfort but also about safeguarding the health of your family. With this, optimizing your HVAC system and understanding when to open or close windows becomes a key strategy in preserving the sanctity of your indoor environment.

Factors To Consider Before Opening Your Windows

Before deciding whether or not to throw those windows wide open while your HVAC is running, there are a handful of critical factors to keep in mind. These factors aren’t just about maximizing efficiency but also about ensuring the health and well-being of those living in the home. Each factor plays a unique role in influencing the effectiveness of your HVAC system and the overall quality of the air inside your home.

  • Energy Efficiency and Bills
  • Influence On Indoor Air Quality
  • Environmental Factors and Pollutants
  • System Strain and Longevity
  • Wildfire Smoke and Outdoor Contaminants

Energy Efficiency and Bills

Operating a heating or air conditioning system while keeping windows open might seem harmless, but in reality, it can strain your system and cause an uptick in your energy bills. Think of it like trying to fill a bucket with a hole at the bottom; the air your system works so hard to cool or heat escapes, making the system run longer and work harder.

This not only increases your monthly bills but also contributes to wear and tear, potentially leading to costly repairs in the long run. For homeowners in Los Angeles, where energy costs can already be high, any additional and unnecessary cost can be a burden. It’s always wise to be mindful of energy consumption habits, as small actions can translate to significant savings over time.

Influence On Indoor Air Quality

Maintaining optimal indoor air quality in Los Angeles, CA goes beyond comfort; it’s about ensuring the health of everyone in the home. When windows are open, the outdoor pollutants, allergens, and even microbial contaminants can easily make their way indoors. This influx can aggravate allergies, worsen respiratory conditions, and even affect the overall well-being of those inside. Especially in areas with dense traffic or construction activities, the outside air can carry fine particulates that can be harmful when inhaled.

While natural ventilation has its merits, understanding when and how to use it in conjunction with your HVAC system is crucial to balance both health and comfort. We recommend checking Los Angeles’s Air Quality rating before opening your windows.

Environmental Factors and Pollutants

The picturesque beauty of Los Angeles, with its sunlit landscapes, unfortunately, comes with the looming threat of wildfires, especially during the drier months. Wildfires in Los Angeles, CA can quickly produce vast amounts of smoke, ash, and fine particulate matter that can be detrimental to respiratory health.

When windows are left open during a wildfire event, these pollutants can seep into your home, impacting your indoor air quality and rendering your indoor environment unsafe. Prolonged exposure can lead to various health issues, especially for those with existing respiratory conditions or sensitivities. At Brody Pennell, we cannot stress enough the importance of keeping windows closed during such events. It’s not just about comfort but ensuring the safety and health of your family during the wildfire season.

System Strain and Longevity

A well-functioning HVAC system is meticulously designed to balance the airflow within your home, ensuring every room receives an adequate supply of conditioned air. Opening windows disrupts this balance, causing the system to overcompensate in certain areas and neglect others. This uneven distribution can result in hot or cold spots throughout your house, making some areas uncomfortable and decreasing indoor air quality. Over time, this disruption can strain the system, leading to premature wear and potentially shortening its lifespan.

Additionally, such imbalances can lead to issues like mold growth, as uneven temperatures and humidity levels provide the ideal conditions for mold and mildew to thrive. Ensuring a harmonized airflow is not only about comfort but also about maintaining a healthy living environment.

The best way to ensure your heating and air conditioning system is in top-notch condition is by scheduling regular HVAC maintenance in Los Angeles, CA and surrounding areas. Our professionals can catch malfunctions early, identify your home’s air quality, and provide preventative solutions to keep your home comfortable year-round. Trust the Brody Pennell team for both heating and AC maintenance in Los Angeles, CA!

Wildfire Season and Outdoor Contaminants

California’s splendor is occasionally shadowed by the threat of wildfires. These fires emit vast amounts of smoke, which can, even from a distance, permeate your home, posing health risks. Especially vulnerable are those with respiratory issues, the elderly, and children.

During wildfire peaks, it’s imperative to keep windows shut and trust in well-maintained HVAC systems to safeguard indoor air quality in Los Angeles. Brody Pennell emphasizes the necessity of prompt maintenance checks, especially during wildfire-prone months, ensuring your HVAC is up to the task.


Related Article: Tips To Stay Healthy And Safe During Wildfire Season


Preserving Your Home’s Purity

The temptation of fresh autumn air is undeniable. Yet, the implications for indoor air quality and HVAC efficiency are essential considerations. Should you ever be in doubt, professionals are a call away. Brody Pennell stands ready to assist, ensuring that every breath in your home is clean, refreshing, and safe.

Secure Your Comfort With Brody Pennell!

Beautiful fall memories are best enjoyed without indoor air quality concerns. With Brody Pennell’s expertise by your side, rest easy. Prioritize your comfort and health; let us provide comprehensive solutions, from wildfire preparations to top-tier indoor air quality services in Los Angeles, CA. Your peace of mind is our mission!


About The Author

Brody Pennell

Since 1945, Brody Pennell Heating & Air Conditioning is the committed to helping homeowners in the greater Los Angeles area experience total home comfort. In 2021, the readers of the Los Angeles Times voted Brody Pennell the Best HVAC Company in the area.

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Maria L.
1714171589
Juan molina and gino were amazing!!! So professional and took so much time to go over everything with me.
Annick W.
1714169418
Your crew is so nice and efficient and know what they are talking about. It was a pleasure to work with them.
Brett W.
1714164822
James and Maurice came on time, were respectful and professional. As they checked out the issue, they went above and beyond, checking every piece of the furnace for a malfunction and doing a second pass just to make sure. Great service, will use them again.
Louise H.
1714163878
Juancho and Marco did a great job today!!Please come back. Thank you!☺️
Nancy A.
1714163468
Rene was very professional and friendly and diagnosed the issue with the old heater in our house. Loved how you could see exactly what the problem was with the camera probe. He was very knowledgeable and aware of the safety issues of an older heater for the family. Thank you for your quick and competent service.
Steve H.
1714163233
Kevin did a good job.
Beth F.
1714161877
Daniel B. was very polite and helpful. I am very happy with service from Brody Pennell.
Jeremy S.
1714155867
David M. did a fine job during the service call. He was, kind, knowledgeable, and professional. He represented his company well.
Pat D.
1714155494
James h friendly and efficient
Diana R.
1714153844
Daniel Avila was super!! Very professional and had a lovely disposition. He took care of un in no time. I highly recommend him.
Nicole Karsenty L.
1714153630
Cesar Corrales and Jeremy MarmonVery happy with their work. Recommend them anytime.today 4/26/24 Anthony manzo great help
stephanie C.
1714102943
Jose Rivera came to replace Thermostat on a newly installed system. He explained the whole process very well. It was an exceptional and spotless installment, would definitely recommend to family and friends. He deserves 5 stars, will have him working with us again.
Brian K.
1714095576
Great, friendly, knowledgeable, and professional service! Enrique, Danny and Nathan did an excellent job of duct cleaning our hvac system. They were polite, professional and very friendly.
Marcia W.
1714093751
Tony M and Jose were both here for our 6 month checkup and they were extremely thorough, explained everything, and very nice. Would highly recommend them.
Steve L.
1714085783
Tristen and Juancho were efficient and friendly and explained everything clearly.
Debra M.
1714085316
Excellent service by Juan Munoz, Daniel Picard, Brian Diaz, and Juan Sanchez. Very helpful in explaining the HVAC installation process and helping set up new thermostat. Extremely kind and helpful. I recommend Brody Pennel for any HVAC installation or repair.
S O
1714085187
Maria was pleasant and did an excellent job. Explained everything very clearly. Very happy with the service.
Eva B.
1714084317
JuanMolina serviced my ac and heating today He was very polite and helpful,
Tony G.
1714083874
Our regular semi-annual service was performed today and Rene, our technician, did a terrific job, showing care and attention to detail. He's very friendly and informative and made sure we had all our questions answered and were completely satisfied.
Shari M.
1714082673
Marco is the best!!!!
Liza U.
1714081448
Kevin and David E were great4/25/24 Juan C and Gio Q were awesome and helped in everyway. Thanks guys
S M
1714078921
Daniel B & Jose CWe're very polite and courteous and worked very proficiently and efficiently and were able to inform us of the exact problem which was great. I would not hesitate to call on these guys for HV assurance. Thanks Daniel & JoseOn 4/25/2024 Daniel B & Jason S provide our company with best care that we find truly impeccable and would recommend this company and these workers to any other establishment and wouldn't want anyone but the best and these guys are the best in our opinion.
beatles341
1714077166
Jose C. was a great technician to work with. Excellent customer support and service.Ivan D and Kevin L are great guys. They did the maintenance for my property around a month ago. 4/25/24
brett H.
1714076214
My technicians did a great Job ! Steven and Leo.H I would definitely use them again and recommend them.
peter B.
1714076196
Kevin L. and Ivan D. were great and outstanding technicians, efficient, thourough, and wonderful. Please send them back again.
Norman M.
1714074725
Armando and Richie completed a comprehensive inspection and cleaning of my HVAC system. They were thorough and professional, and courteous .I am pleased with their work. Thanks Brody-P.
gloria R.
1714070730
Juan Romo was amazing super knowledgeable and friendly!!!! Amazing service
Helen S.
1714006075
I’ve been with Brody Pennell for many years, and I’m very happy with their service. James Handy is particularly amazing, and I was very fortunate to have him on my most recent maintenance services. He gave me great advice and did a fantastic job.
Denise H.
1714001375
Steven was great!
Kathy N.
1714000925
Juan Romo checked my heater in great detail today and gave me a full report on its welfare. He has suggested the repair of the heat exchanger due to wear and tear . He also pointed out a problem with the circuit board and one small section. He was very thorough, and I understood exactly what he was saying. I commend him highly! Kathy Naylor
Josh E.
1713989240
Juan Molina: thorough, neat, informative & pleasant.
david C.
1713988327
anthony manzo and armando n . great job efficient
Margarita C.
1713984415
Excellent job by Rene Morales 10 stars.
Ana A.
1713981385
Amazing service, very nice attitude, Leo H, Ruben M and Ivan D have extraordinary customer service
David S.
1713979878
Had Jason come by to add surge protector and he did a great job, was professional and efficient.
phuong N.
1713978362
Jose Rivera did a super job. He even added tape to protect the insulation from the elements
Gigi M.
1713920881
Extremely helpful and knowledgeable!David and Juan were very helpful!
Pamela J.
1713918044
Anthony Manzo and Brett Turner gave me great service and excellent recommendations. They made sure I understood everything. Thanks!
Joe L.
1713901725
James H. and David E. Serviced our unit on a bi annual maintenance and did excellent job. I highly recommend this program and James and David to do the work.
Brett H.
1713901322
Kevin and Steven were great
Joshua G.
1713897697
4/23/24 - Daniel B. and Juan De Jesus came out to do maintenance on my system! They were great - on time, professional and knowledgeable!
Marie A.
1713897310
Spencer and Kyle were my technicians and they did a great job. They were thorough and friendly and explained what they were doing as they went along. Overall great experience, wish all service techs operated this way!Update: Ivan and Angel came to do our follow-up service call. Same experience. Friendly, fast, and efficient. I really appreciate the consistency of service with this company
Joseph H.
1713897054
Marco and Ashton are very courteous, friendly, and professional. They are very knowledgeable, and expertly performed their inspection on my heating and air conditioning system. Marco even went above and beyond, and installed a fix for my thermostat on the spot at no charge. I highly recommend Marco, Ashton and the Brody Pennell team!
Jennifer M.
1713896132
The "comfort club" is well worth the annual fee. Our system is checked and cleaned twice annually, and the staff have been superb.
Abeigel B.
1713834446
Outstanding in every way , technically, courtesecy, helpful. Perfect.
Diane S.
1713827710
Great service and Rene was helpful and professional!
Dr. Jack W.
1713824178
Daniel B is an exemplary employee of BP..Truly an excellent Tech whom we appreciated performing our system’s maintenance!!Thank you, Daniel !!
Preston M.
1713821826
After wasting money and time with another company, David M. And Brett T. came out and help me fully understand the issues with my AC unit and provide no nonsense pricing. Highly recommended.
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Maria L.
1714171589
Juan molina and gino were amazing!!! So professional and took so much time to go over everything with me.
Annick W.
1714169418
Your crew is so nice and efficient and know what they are talking about. It was a pleasure to work with them.
Brett W.
1714164822
James and Maurice came on time, were respectful and professional. As they checked out the issue, they went above and beyond, checking every piece of the furnace for a malfunction and doing a second pass just to make sure. Great service, will use them again.
Louise H.
1714163878
Juancho and Marco did a great job today!!Please come back. Thank you!☺️
Nancy A.
1714163468
Rene was very professional and friendly and diagnosed the issue with the old heater in our house. Loved how you could see exactly what the problem was with the camera probe. He was very knowledgeable and aware of the safety issues of an older heater for the family. Thank you for your quick and competent service.
Steve H.
1714163233
Kevin did a good job.
Beth F.
1714161877
Daniel B. was very polite and helpful. I am very happy with service from Brody Pennell.
Jeremy S.
1714155867
David M. did a fine job during the service call. He was, kind, knowledgeable, and professional. He represented his company well.
Pat D.
1714155494
James h friendly and efficient
Diana R.
1714153844
Daniel Avila was super!! Very professional and had a lovely disposition. He took care of un in no time. I highly recommend him.
Nicole Karsenty L.
1714153630
Cesar Corrales and Jeremy MarmonVery happy with their work. Recommend them anytime.today 4/26/24 Anthony manzo great help
stephanie C.
1714102943
Jose Rivera came to replace Thermostat on a newly installed system. He explained the whole process very well. It was an exceptional and spotless installment, would definitely recommend to family and friends. He deserves 5 stars, will have him working with us again.
Brian K.
1714095576
Great, friendly, knowledgeable, and professional service! Enrique, Danny and Nathan did an excellent job of duct cleaning our hvac system. They were polite, professional and very friendly.
Marcia W.
1714093751
Tony M and Jose were both here for our 6 month checkup and they were extremely thorough, explained everything, and very nice. Would highly recommend them.
Steve L.
1714085783
Tristen and Juancho were efficient and friendly and explained everything clearly.
Debra M.
1714085316
Excellent service by Juan Munoz, Daniel Picard, Brian Diaz, and Juan Sanchez. Very helpful in explaining the HVAC installation process and helping set up new thermostat. Extremely kind and helpful. I recommend Brody Pennel for any HVAC installation or repair.
S O
1714085187
Maria was pleasant and did an excellent job. Explained everything very clearly. Very happy with the service.
Eva B.
1714084317
JuanMolina serviced my ac and heating today He was very polite and helpful,
Tony G.
1714083874
Our regular semi-annual service was performed today and Rene, our technician, did a terrific job, showing care and attention to detail. He's very friendly and informative and made sure we had all our questions answered and were completely satisfied.
Shari M.
1714082673
Marco is the best!!!!
Liza U.
1714081448
Kevin and David E were great4/25/24 Juan C and Gio Q were awesome and helped in everyway. Thanks guys
S M
1714078921
Daniel B & Jose CWe're very polite and courteous and worked very proficiently and efficiently and were able to inform us of the exact problem which was great. I would not hesitate to call on these guys for HV assurance. Thanks Daniel & JoseOn 4/25/2024 Daniel B & Jason S provide our company with best care that we find truly impeccable and would recommend this company and these workers to any other establishment and wouldn't want anyone but the best and these guys are the best in our opinion.
beatles341
1714077166
Jose C. was a great technician to work with. Excellent customer support and service.Ivan D and Kevin L are great guys. They did the maintenance for my property around a month ago. 4/25/24
brett H.
1714076214
My technicians did a great Job ! Steven and Leo.H I would definitely use them again and recommend them.
peter B.
1714076196
Kevin L. and Ivan D. were great and outstanding technicians, efficient, thourough, and wonderful. Please send them back again.
Norman M.
1714074725
Armando and Richie completed a comprehensive inspection and cleaning of my HVAC system. They were thorough and professional, and courteous .I am pleased with their work. Thanks Brody-P.
gloria R.
1714070730
Juan Romo was amazing super knowledgeable and friendly!!!! Amazing service
Helen S.
1714006075
I’ve been with Brody Pennell for many years, and I’m very happy with their service. James Handy is particularly amazing, and I was very fortunate to have him on my most recent maintenance services. He gave me great advice and did a fantastic job.
Denise H.
1714001375
Steven was great!
Kathy N.
1714000925
Juan Romo checked my heater in great detail today and gave me a full report on its welfare. He has suggested the repair of the heat exchanger due to wear and tear . He also pointed out a problem with the circuit board and one small section. He was very thorough, and I understood exactly what he was saying. I commend him highly! Kathy Naylor
Josh E.
1713989240
Juan Molina: thorough, neat, informative & pleasant.
david C.
1713988327
anthony manzo and armando n . great job efficient
Margarita C.
1713984415
Excellent job by Rene Morales 10 stars.
Ana A.
1713981385
Amazing service, very nice attitude, Leo H, Ruben M and Ivan D have extraordinary customer service
David S.
1713979878
Had Jason come by to add surge protector and he did a great job, was professional and efficient.
phuong N.
1713978362
Jose Rivera did a super job. He even added tape to protect the insulation from the elements
Gigi M.
1713920881
Extremely helpful and knowledgeable!David and Juan were very helpful!
Pamela J.
1713918044
Anthony Manzo and Brett Turner gave me great service and excellent recommendations. They made sure I understood everything. Thanks!
Joe L.
1713901725
James H. and David E. Serviced our unit on a bi annual maintenance and did excellent job. I highly recommend this program and James and David to do the work.
Brett H.
1713901322
Kevin and Steven were great
Joshua G.
1713897697
4/23/24 - Daniel B. and Juan De Jesus came out to do maintenance on my system! They were great - on time, professional and knowledgeable!
Marie A.
1713897310
Spencer and Kyle were my technicians and they did a great job. They were thorough and friendly and explained what they were doing as they went along. Overall great experience, wish all service techs operated this way!Update: Ivan and Angel came to do our follow-up service call. Same experience. Friendly, fast, and efficient. I really appreciate the consistency of service with this company
Joseph H.
1713897054
Marco and Ashton are very courteous, friendly, and professional. They are very knowledgeable, and expertly performed their inspection on my heating and air conditioning system. Marco even went above and beyond, and installed a fix for my thermostat on the spot at no charge. I highly recommend Marco, Ashton and the Brody Pennell team!
Jennifer M.
1713896132
The "comfort club" is well worth the annual fee. Our system is checked and cleaned twice annually, and the staff have been superb.
Abeigel B.
1713834446
Outstanding in every way , technically, courtesecy, helpful. Perfect.
Diane S.
1713827710
Great service and Rene was helpful and professional!
Dr. Jack W.
1713824178
Daniel B is an exemplary employee of BP..Truly an excellent Tech whom we appreciated performing our system’s maintenance!!Thank you, Daniel !!
Preston M.
1713821826
After wasting money and time with another company, David M. And Brett T. came out and help me fully understand the issues with my AC unit and provide no nonsense pricing. Highly recommended.
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