Air ventilation systems at Sonoma County. Clean, fresh indoor air makes a big difference in your comfort level. Whether you are at work or at home, stuffy, dirty air just makes you and your family or employees miserable. Poor ventilation can also worsen allergies and even increase the risk of certain infections and other diseases.

Ventilation options have improved since the days of your great-grandmother’s huge, noisy window fan. Today’s house fan systems operate quietly and effectively. They improve the air quality of your home during times when the air conditioner and heater are not needed, which often occurs in Santa Rosa’s moderate climate.

If you need a ventilation system for your home or commercial building or have concerns about your current ventilation system, contact Larsen Energy Systems, your Sonoma County air quality experts.


Located in Windsor, California, Larsen Energy Systems serves all of Sonoma County and the surrounding area, including Marin County. Whether you are in Santa Rosa or Skyhawk, we are the local, family-owned business that is there for all your HVAC needs.

We offer complete HVAC services, including inspections, maintenance, repairs, and new installations. This includes repair work and installation of traditional electric, gas, or boiler furnaces and air conditioners, as well as combination heat pumps and ductless mini-split systems. And we offer both residential and commercial services, getting the air perfect for you everywhere you go.

And we are the Santa Rosa area’s air quality experts and professionals. We have over 10 years of HVAC experience, including installing and repairing ventilation systems. We can also do sheet metal work that allows us to create customized ductwork as needed for the best operational efficiency, airflow, and air quality. And we apply our in-depth understanding of airflow to the entire system. For the professionals that really know ventilation, Larsen Energy Systems is the team to call.


A whole-house ventilation system offers a way to circulate fresh air through your home even when you don’t need the air conditioner or heater. It pulls fresh air into the home and hot air up and out of your house through vents in the roof, keeping your house and attic cooler.  It is less expensive to run than the AC and can help save on your energy bills. It is a great option to use during Sonoma’s cooler spring, summer, and fall evenings, giving you a cooler, better night’s sleep without the cost of running the AC.

Indoor air can have up to 2 to 5 times more pollutants than outdoor air. Indoor pollutants and irritants can include asbestos and lead from old building materials, “gassing” or the emission of chemicals from new products and materials, pet dander, mold, bacteria, dust, tobacco smoke, ozone, pesticides, carbon monoxide, and radon.*

Bringing fresh air in and pushing stale, dirty air out is an improvement that you and your family deserve to have in your home. Plus, since a ventilation fan runs even when the heat and AC are off, it provides year-round, all day, and all-night improvement of air quality.


In addition to adding a separate ventilation system, maintaining your current ductwork and vents is crucial to having high-quality indoor air.

Poorly maintained ventilation systems for your heating and air conditioning could have significant dust buildup that causes dust to blow out into your home continuously every time the blower is running. You may not visibly see the dust coming out of the vent, but you will start to notice that you need to dust your furniture more often and that nothing seems to stay clean. Those ducts can also harbor bacteria and allergy irritants. This can affect your family or workers’ health and performance. Studies have even shown decreased student performance in schools with poor air quality. *

And cracks or leaks in your vents and ductwork can lead to energy loss and a home that is never cool or warm enough. Your utility bills will rise, and you’ll never really be 100% comfortable in your home.

These issues can creep up on a homeowner or commercial property owner. Without regular inspection and maintenance, you can easily forget about your duct system and not notice anything is wrong until the system becomes unable to effectively warm and cool the house because it struggles to push air through the vents, or you and your family or employees feel ill when they are at home or work but fine when they leave.


None of these air quality issues have to be a problem for your family or business. Larsen Energy Systems can provide the regularly scheduled maintenance and ventilation installation you need to keep your air fresh and help you love spending time in your home and office. With the average person spending 90% or more of their time indoors, this is a call that improves your life quality as much as it improves your air quality.

Larsen is a local, family-owned, and operated business with over ten years of HVAC experience. We are professionally licensed, bonded, and insured. And we care about our Sonoma and Marin neighbors and strive to provide the best possible HVAC solutions for every season.

Call Larsen Energy Systems today and start enjoying fresher, cleaner air!

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