To book a service appointment please call 833-HVACMAN

HVAC & Plumbing Repair Truck

Why Do I See Water Stains on My Ceiling?

If you start seeing water stains on your ceiling, it could have been caused by a few factors. Here are some things you need to know to help keep your roof safe and clean.


Ceiling water stains are primarily by-products of your roof, plumbing leak, or heating appliance that is seeping through the ceiling and then evaporates, thus leaving it with an unsightly patch of discolored and dried mineral deposits. Once you notice water stains on the ceiling, most people usually get annoyed. At Absolute Airflow, we are here to educate you on why it happens and how you can prevent it.

AC Unit Inspection & Repair

Causes of Ceiling Water Stains

It is not extremely hard to figure the area of your home the water is coming from. Whether it is your upstairs bathroom or the roof itself, whatever is above your home ceiling is always the source of the stains you see.


The first thing to do is to identify the possible source above your ceiling. This can be a leaky pipe. Also, it is common for water to run along your house rafters or pipes before dropping onto your ceiling, thus becoming the source of stains.

  • Caulking is also a common source of water seepage and stains on most ceilings. Caulking is the sealing of joints.
  • A shower pan that comes into contact disrepair is also a common source of water stains on ceilings.
  • Bad piping leads to stains due to leaking or when pipes are sweating from inadequate insulation.

Ensure your ceiling is free from water stains; make sure you have replaced old pipes. Old pipes lead to stains because of hard water minerals, which causes cuts that lead to leaking.

Sometimes, upgrading your insulation system can be the best way to prevent water stains on your ceiling. When it comes to improving your heating system, water stains may result from rain that comes from on top of your house.

Air Conditioning Safety Switch

When we speak about a safety float switch, we are talking about a device that goes on your conditioning system’s condensation line, primarily designed to prevent water damages if your condensation line is clogged.


The Air Conditioning system’s condensation lines clog for various reasons, such as rodents, dirt, mice, and bugs that crawl up inside and get stuck. Our expert AC service technicians will come to your place to ensure your system is free from causing water stains to your ceiling. We will get to the attic space, and at the indoor coil, which is half of the entire conditioning system, we can check the condenser.


The indoor coiling is hooked up to the outside of the condenser. As the system is in operation, the coil is the one that condensates. Once the indoor coil condensates, it will produce water that will trickle down into the system’s pan, and then water will drain, thus draining out of the PVC pipes and finally drain to the ceiling.

What Is A Safety Float Switch?

A safety floats switch is a flotation device that lifts the system’s float when your system’s water backs up. By raising the system’s float, a safety switch shuts off the power to your conditioning system, making it stop producing water.

Certified HVAC Technician

For Quick Emergency Help – Please Call (833) 482-2626 Immediately

Our state-licensed and certified HVAC technicians are always available to help you.

Absolute Airflow is a 24 Hour Emergency HVAC Service Contractor

Customer Reviews

Called Absolute for my 81 year old landlord in the height of Summer heat. Scott came out to inspect the old beast of an AC and found many issues. He took the time to educate us, note everything, photograph it and provide several recommendations...and my stubborn landlord has done nothing LOL. A couple months later we asked that Scott come back out and he was there that same day.

Emily H.

Santa Ana, CA

I contacted Absolute Airflow to check my mother's AC, as it was not getting cold. The tech (Scott) arrived earlier than his scheduled time, and was very knowledgeable, professional, and most of very personable with my mother in letting her know that the issue was. Superb customer service Scott and thank you Absolute Airflow! I highly recommend Absolute Airflow.

Billy A.

Billy A.

Bellflower, CA

I have called in Absokite Airflow for my tankless water heater and A/C unit for maintenance. They were professional and took the safety precautions necessary including wearing a mask and cornering their shoes when entering my home. I recommend them highly. Shout out to Zack who took care of the tankless water heater.  They were professional and friendly.

Beatriz S.


Santa Fe Springs, CA

Carlos came to our house to access the A/C project and to give us an estimate. He was very knowledgeable and took his time to explain all the opinions in detail as well as the installation process and warranties. Tanner and Chris were the installers, they were very professional taking their time and attention to details. To keep our house clean while installing the new A/C system.

Robert M.

Robert M.

Whittier, CA