Yes, we have $2 million general liability, $1 million workers comp, and $1 million commercial Auto. We even have special insurance that covers solar panel cleaning.

Over 10 years. The business was founded in June 2002. We have changed our name a few times over the years starting out as 'AMW Window Cleaning' then 'Watson Window Washing' and now 'CleanTech Services LLC'.

We service all of Southern California for commercial jobs and the following Counties for residential: Orange, Los Angeles, Riverside, and San Bernardino

Very simple. Click Here and you will be directed to our quote generator that is 100% accurate 98% of the time.

If you are a new residential customer click here, get your quote, then click book now".

If you are a commercial customer click here, fill out your information, and we shall contact you with you quote.

If you are a returning customer and want to book another appointment click here.

Under "Contact Us" you will see a "Returning Customers" link or you can click here.

To book and appointment you first need to receive a quote. To do that please click here.

Unless you have a crazy custom house with much more windows than houses of comparable size then the quotes are 100% accurate.

No, but if you do need to cancel or change your appointment we would appreciate knowing as early as possible.

You can click here and use the provided map to see.

You first need to complete the quote for the first service then click "add Service" which is found next to the "Book Now" button.

We charge a $25 late fee for every 90 days an invoice remains unpaid.

We accept checks, all major credit cards, PayPal, and cash.

You can mail us a check at 650 N Rose Dr Suite 204 Placentia, CA 92870 and include the invoice number on the check or you can pay using a credit card here.

No tax is charged.

That depends on your location and environment. Many locations need cleaning twice per year, once around May and once around September. If you live in a very dusty area, or next to a busy road the solar panels may need cleaning up to 4 times per year.

No. If nobody is home we shall take before and after pictures, complete the cleaning, email the pictures along with the invoice and you can pay on our website or mail us a check.

No not at all. In fact, you may find it interesting to watch your output increase as we clean them.

No, this is a very common mistake. Please do not do this as you will be permanently damaging your panels! You can read more information on our solar panel cleaning page here.

Not at all. Some warranties actually require regular cleaning.

Sometimes. The methods we use do not bring the temperature of the panels down very quickly so there is no change of thermal shock. We use our methods at midday in 115F heat with no problems at all. If other people are going to be cleaning your panels they may be using different methods so we would recommend early morning cleaning for them.

You are losing money when your panels are dirty because the dirt is blocking the sun. It will also lengthen the lifespan of your system.

Unfortunately the solar industry is still new and there are many inexperienced installers out there. It is a scientific fact that dirty panels block the sunlight and less electricity is produced. I have even heard a so-called "experienced" installer say a solar panel produces the same amount of electricity when covered with a foot of snow. Another reason why they say that is telling a customer there is a maintenance expense is not a good selling point.

We have to use the squeegee method but we use a special soap that leave minimal deposits on the glass so your interior window will stay clean twice as long.

If you are going to have your interior windows cleaned we will need access inside. You do not need to be home for this but most people would prefer to be home.

The squeegee method leaves a layer of sticky soap on the glass but our method will not leave anything for the dirt to stick too.

Yes, hard water spot removal normally requires glass restoration techniques. This ranges from $10-$20 per window pane.

Yes, when ever we clean the interior windows we also clean the channels or tracks.

Yes we clean the screens whenever we clean the exterior windows.

Almost any surface can be pressure washed. We know the exact pressure need to clean each surface without damaging it.

We can remove all surface oil from concrete but as concrete is a porous material the oil that has seeped into the concrete will remain. We can leave a special oil eating bacteria with you to apply after the surface has dried which will help with the deep stains.

Yes, If you do not clean the windows after then hard water spots will form on the windows.

We use a rotating brush that passes through the vent and loosens all the lint. The lint is removed and we make sure there is a strong air flow produced by the dryer.

Ye, we need access to your dryer.

Professionals recommend as much as once per year.

Yes, we clean graffiti that is on private property. If it is on public property please contact the city and they will clean this for free.

We offer air duct cleaning, bird control, graffiti removal, roof cleaning, gutter cleaning, awning cleaning and sealing, chandelier cleaning, ceiling fan cleaning, high dusting, and hard water spot removal.