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My Air Conditioner Is Leaking Water

Posted by John Sims on Tue, Jun, 05, 2018 @ 11:06 AM

First, understand that your air conditioner is a great big whole-house dehumidifierWindowMoisture2 where the primary function is to remove, or pull moisture from the humid air (what makes you uncomfortable) in your home.

Here's the 'normal' function of your air conditioner, the way it's designed to work:

We mainly count on our air conditioners to cool the air in our homes, but they also perform another function: dehumidification. When your air conditioner is running, the evaporator coil gets extremely cold. As warm air from your home is blown over the coil, the air cools down and releases moisture (thereby dehumidifying your air).

Your AC’s inside unit contains the evaporator coil that cools the warm air blown over it. This causes condensation to form on the coil. Everyone has seen water droplets form on a cold glass of water or cold pop can on a hot day.

The moisture on the evaporator coil drips into a drain pan and then it runs down a condensate drain line (a white PVC pipe) that leads to a floor drain or exits out your home

This is a GOOD thing, and a sign that your system is doing its job. But, there's a difference between water draining and water leaking.

So Here's A Common Problem For A Neglected Air Conditioning System

PluggedDrainLineWater leaks in central air conditioners are almost always caused by a problem with the condensate pan or drain pipes. A clogged condensate drain line is the most common cause of water leaking from your AC into your home.

When your drain line gets clogged with dust, dirt, or mold, water backs up in your drain pan. With nowhere to go, that water will begin to spill over your drain pan and onto your furnace or air handler and then onto your floor.

You’ll need to unclog it. There are multiple unclogging methods, you can try a rigid wire to poke up the line or better yet, use a wet/dry vac on the condensate line.

But the surefire way is to have a professional use a special vacuum to suck the stuff that's blocking the line out. Also, a pretty good argument to schedule a tune up.

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Topics: AC Problems, Air Conditioning, Evaporator Coil

Inspect The Drainage Line of Your Air Conditioner

Posted by John Sims on Fri, Jun, 16, 2017 @ 12:06 PM

If it's been a few years since checking this, now may be a good time. Remember your air conditioner is really a big dehumidifier.  It's primary role is to REMOVE moisture from the air in your home. Well, in order to do that, moisture needs to have a place where it condenses and then drains safely.

Warmer weather is here and your air conditioner is working a lot more to keep your home comfortable over the next few months. The cooling process creates condensation – occasionally, issues with your drip pan or condensate drain lines may cause water to back up into your home or furnace. Yes, your furnace. It's an important component of your air conditioner. It houses the evaporator coil and uses the blower motor to circulate air

Condensation occurs on the evaporator coil located in your furnace just above the heat exchanger. As the blower motor in your furnace circulates air through your home through the supply and return vents, the air passes over the evaporator coil which has the cold refrigerant running through the tubing to your outside unit. The moisture in the air condenses on the fins into water. It also exchanges heat from the air as well.

Looks like a radiator


Water on the floor around your furnace is a sign there is a problem with your condensation drain lines. The system will have a drip pan, which is typically located to the bottom of the unit. The drip pan connects to the condensate drain line, which carries water out of the home.

When the drip pan becomes full or clogged, or the condensate line is clogged, water can spill over the drip pan’s edges, onto the floor surrounding your furnace.

Musty odors and increasing humidity inside your home are additional signs of a condensate drain system issue. If left untreated, this issue could lead to serious water damage inside your home.

Inspect your condensate drain lines for clogs may save you a ton of money on repairs.

Next up: Steps To Fix A Clogged Condensate Drain Line

Need to 'fix' it right now?

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Topics: A/C Systems, Maintenance, Cooling, Evaporator Coil

The Part of Your A/C System That You Don't See Is Costing You $$ and Comfort

Posted by John Sims on Tue, Apr, 18, 2017 @ 11:04 AM

Keeping A/C evaporator coils clean boosts the system's efficiency and increases cooling capacity.

Your air conditioner comprises multiple parts that depend on being free from dirt to ensure the highest efficiency possible.

The A/C evaporator coil is a major component that can either make or break your energy costs. Keeping them clean also boosts the potential comfort level of your home, too.

The evaporator coil is located inside the typical furnace above the heat exchanger so circulating air can pass over it. As the blower/fan pulls warm, moist air into the system, the evaporator coil — along with the refrigerant — absorbs the heat energy and sends it/transfers it to the condenser(your outside unit). It also is the place where the moisture/humidity in your home condenses and goes out your drain line.


Under ideal conditions, like when the evaporator coils are clean, the system operates at peak efficiency.

Dirt buildup IS the coils' number one enemy. Dirt prohibits the proper transfer of heat over the coils, acting as an insulation of sorts that prevents heat from moving through the coils as it should.

Some experts estimate that dirty coils consume as much as 37 percent more energy than coils that are clean. Energy costs aren't the only consequence. Dirty coils have a direct correlation to a lower system cooling capacity, in worst-case scenarios delivering a 30 percent reduction in capacity.

The Technical Explanation: The dirt resting on coils increases the total pressure within the system when it's operating, and it increases operating temperatures, too. Over time, these conditions compromise the lubricant on the compressor, causing a costly system failure.

You can take several steps to prevent an expensive repair or system replacement and higher energy costs. Don't leave the cleanliness of your coils, and your air conditioner, to chance.

Here's how to keep your A/C evapoartor coils clean:

Pay attention to the air filter. Your air filter is the coils' first line of defense against dirt buildup inside the system. During the summer, when your air conditioner runs continuously, change the filter every four weeks, and even more often if you have pets that shed in the home or you're in the middle of a home-improvement project.

Professional service. Hopefully you see why regular maintenance is a good thing; schedule annual service for your cooling system. We follow industry-leading practices for cleaning the coils, which may include employing pressure-washing tools, a specialized vacuum or a foaming detergent.


Topics: A/C Tune Up, AC Components, Dirt Problems, Evaporator Coil

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