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Whether you call us for a residential or a commercial job, we guarantee quality workmanship as well as prompt and courteous cleaning service. You can be assured that this excellent service is at low prices few can beat. You just can’t get better quality and service than with Larsen Window Cleaning.

There is more to cleaning windows than meets the eye. While it may look easy, only a seasoned professional has the experience to do the most thorough job while protecting your property. By trusting our professionals, we assure you that the job will be done right and on time. We are flexible and can schedule around your needs. And most importantly, we’ll be there when we promise.

We use state of the art equipment and with over 25 years of experience we will get the job done right. Our company is insured for your safety and peace of mind. With decades of experience, let us take care of your window cleaning needs.

Do you have really old windows? Much of pre-1940s window glass was wavy. You can see it when viewed from a slight angle. Old glass may be pitted or scratched from previous window cleaning. Care must be taken to not make things worse. The older the windows the more apt they are to have hard water stains which are nearly impossible for a homeowner to get off. Calcium and magnesium minerals need more than average household cleaner.

On the other hand, the brand new windows can be a challenge to clean. Some have interior grilles that must be removed carefully before cleaning. Screens must be washed and dried before returning them to the sill. More potential for glass damage exists when the new panes have a layer of smoke decal applied to help keep the sun out. That material scratches easily and typically don’t respond well to home cleansers.

There comes a time when you realize it’s time to have a professional clean your windows. Many clean their widows themselves only to watch the sun come in the next day and highlight all the streaks and smudges you left. Pretty aggravating. Mark Larsen knows how to remove all the residue left from local construction, winds, rain, and the smog we have here in the San Gabriel Valley. It all combines to create smudge that can be hard to remove completely. There are many DIY formulas and most don’t work.

We must mention safety. Is it really wise to be getting up and down on a ladder? Washing all the windows in and out of a house is a very strenuous job. And, with second story windows, the risk of injury is great. There are some windows you simply cannot clean from the inside.

Mark Larsen is experienced, knowledgeable and insured. Let the pro do it.


Besides window cleaning in the San Gabriel Valley, we also offer other services which include solar panel cleaning and gutter cleaning.

Gutter cleaning is an important household maintenance item that many times gets overlooked. Many of our clients are on a revolving schedule with us that
makes it easy to maintain the gutters. Roof leaks and damage can occur when gutters are overloaded with leaves and debris. We recommend twice a year gutter cleaning in early spring and winter.

When leaves and debris fills the gutters, rain backs up under the roof tiles. Left in this condition, the underlayment of your roof deteriorates. Stuffed gutters is a very common culprit when someone sees a water mark on their ceiling. Rain channels and downspouts must be cleared every several months.

Care must be taken with different types of gutters. Do you know what gutter material is on your house? Is it copper? Is it aluminum? Is it vinyl? Is it wood? How old are the gutters? Might they have damage?

Think you’re out of the woods because you have gutter mesh over them? You’ve kept the large leaves out, yes. But, dirt and small particles can still get in and create a sticky silt that reduces water flow. Unless your gutters are completely covered, they must be cleaned.

We have special gutter cleaning tools homeowners are not apt to buy. And, again, being up on a ladder is very unsafe for you at any age. If you have a family member over the age of 50 who owns their home, ordering gutter cleaning for them would be a fantastic twice a year gift.


Solar Panel cleaning is important to maintain the life of your panels. Industry reports say the lack of scheduled cleanings can cause solar panels to lose 15 – 25% of their efficiency and increase a solar cells payback time by 3 – 5 years.

We clean panels for homes and for commercial buildings. We inspect the solar panels to remove any large debris and look for damage. Solar equipment is made with very durable materials…all except for the glass. So cleaning must be done very carefully. Bird droppings cause the panel’s energy-producing capacity to diminish. And, they are often tough to get off. No job for a beginner. Frankly, you are wise not to be up on your roof for any reason, but stepping around the solar equipment can be dangerous.

We also have specific equipment and chemicals that are made for solar panel cleaning. Call us today for a quote on this service.

We have several awards that set us apart from our competitors. In 2013 we won Home Advisors Best of award in Window Cleaning because of our terrific ratings. We are also a member of the business consumer alliance with a AAA rating. We have a 5 star rating on Yelp and positive reviews on Facebook. With Larsen Window Cleaning, you won’t be disappointed.

You can trust the professionals at Larsen Window Cleaning. Call us today for a free estimate.