How much does cleaning solar panels improve their output?…read more I had my solar panels cleaned recently by @sudandsqueegie. I had them cleaned only a few months earlier by another company, but I recleaned them because two panels were producing lower output and looked obviously dirty. The other panels did not look like they needed cleaning. I was surprised to see that the cleaning improved the output of all the panels from an average of about 340 Wh per panel to about 540 Wh, an increase of about 58%! The first picture is a drone shot of the panels, showing the two panels that were obviously dirty. The first panel picture shows the output of all panels before cleaning, and the second panel picture shows the output after cleaning. The panel output measurements were taken within 1 hour of each other at around 1 pm. It was a partially overcast day, so the output is usually much greater. However, it shows the amount of improvement possible with simple cleaning of the panels, despite them not appearing obviously dirty to the naked eye. It turns out the two panels that looked obviously dirty had cracks in the glass surface, and most of the discoloration was dirt that had seeped underneath the glass coating and could not be removed by cleaning. Surprisingly, not only did the surface cleaning of the two "dirty panels" improve, but it also improved the other panels that did not look like they needed cleaning! The original company that did the cleaning used a brush on a long pole to drip deionized water onto the panels. @sudandsqueegee used a long pole with two rotating brushes, which seemed to be more effective. They were very efficient and professional in their work. I recommend them highly.

The team that came out and did my parents windows was extremely professional and did a fabulous…read morejob. Communications with Jordan was great, he kept me up-to-date with the team and when to expect them. The price was fair and the quality of work was outstanding. I highly recommend this company for all your window cleaning needs.

I found Clear San Diego through my own research online, and I am so glad I went with them. Al and…read moreJoseph did a very thorough, pristine cleaning, with attention to detail. I didn't realize how dirty my windows were until I saw how clean they became. What a difference. It was a pleasure to work with Al and his team. I appreciated their timeliness, integrity, and work ethic. Highly recommend.

I wish I could give this company 20 stars! First, the job they did was exceptional on my very…read moredifficult to clean French pane windows. Second, they came to my rescue when another window company did a horrible job on my windows. The customer service and quality of their work is exceptional. Alex, the technician who was here, was polite and so good at what he does. I cannot recommend this company enough!

As always Jeff did another stellar window cleaning job on all our windows (23). Being the true…read moreprofessional, he arrived 5 minutes early, brought all his own equipment & was in & out in no time. He prices are very fair. I've referred many friends & family members. Never disappointed in his work.

Great communication leading up to the visit. Jeff was very professional. We had a dog and he was…read morevery friendly with our dog. Our windows never looked so clean. Like new again. Price to do all the windows was reasonable. We will have him back for sure.

Thanks to Daniel from Elbow Grease Window Cleaning (760-277-9888) my home now looks brand new…read moreagain. He power washed my 2 story townhome cleaning off all the dirt and what not, cleaned all windows inside and out which included cleaning the tracks. The windows are spotless and streak free. Beautiful! Overall Great experience, have recommended them to the rest of my community. Thank you Daniel!

I have a huge glass wall on my golf course view. The birds love to '…read more"decorate " it. Elbow Greese Window Washers make it sparkle and shine! They also do my home, the screens, all done carefully and professionally.

Matt did an incredible job on our windows today. He was professional, respectful of our property,…read moreand paid attention to the details--even cleaning the tracks and screens. The pricing was fair and the results speak for themselves. 10/10!

Richard came out and cleaned about 30 windows, in and out, in about 2 hours…read more Excellent work and pricing. Highly recommend.

Great experience end to end. I submitted a form on the website and got a phone call to schedule an…read moreappointment within 24h. Day-of, Kenny arrived and was awesome. Not only did he do a great job cleaning our filthy windows, screens and tracks, he was super, super nice and efficient in his work. Ask about the cash discount! Will definitely use these guys again.

Kennedy Brothers does a fantastic job cleaning your windows and solar panels! They showed up…read morepromptly, but I had double scheduled with another home-improvement company that had just arrived at the same time. Kennedy brothers said hey no problem we'll reschedule. No big deal. They came back a few days later when the area was clear and did a fantastic job. I really appreciated their flexibility. Thanks guys!

Joey set up another window cleaning job for me at my home and Sean arrived precisely on time and in…read morean exceptionally good job on all of our windows. He was professional, courteous, friendly, and did high quality work. I will continue to work with this great company. 5 stars all the way !

Excellent company very detailed and service was excellent would recommend to anyone very reasonableread more

I wanted a deep cleaning of my windows and home for an…read moreUpcoming move. The workers were here at 9am. By 6 pm all was done. I'm happy with the results and will use them again. This business is needed in my area. Great job!

What amazing customer service! Steve is super fast to respond and also just a nice guy. The actual…read morecleaning itself was beyond my expectations and they really paid attention to all the details. I will definitely use this company again.