Tag: condenser coil

Your HVAC Coils Need a Strong Cleaning – Here’s Why

You just ate an amazing dinner! Perhaps a mouthwatering steak, garlic mashed potatoes, and whatever fixings are your favorite. Now that your stomach is completely full and happy, it’s time to clean up the kitchen. Imagine all the food that just sat on your plate and in the pots and pans.

Photo: Creative Commons
Photo: Creative Commons

Now imagine that instead of using soap and water to clean all of the dishes, you just simply rinse the dishes with just water. Would you consider those dishes clean? 

Next, imagine that you just finished up a day of working outside in the hot sun. You’re ready to go inside, take a shower and relax for the rest of the night. You go inside and take a shower with just water. Would you consider yourself clean? 

It’s normal to actually wash our dishes with soap to get them clean, and it’s normal to wash ourselves with soap each day.

So what’s the norm for A/C coils? It’s normal that coils be cleaned, not just rinsed, at least once a year! According to energystar.gov, you should get a maintenance checkup on your A/C system every year. And that checkup should include cleaning the evaporator and condenser coils. As Energy Star states:

Dirty coils reduce the system’s ability to cool your home and cause the system to run longer, increasing energy costs and reducing the life of the equipment.

If someone suggests just rinsing off your coils, they are cutting corners. Remember, the norm is to use a coil cleaner to clean your coil and then rinse off the coil cleaner. 

Just like you use soap in the shower and soap on your dishes, you should be sure that your coils are cleaned with a coil cleaner each year and not just water

Remember, dirty coils can increase energy usage by 30%! But clean coils save you money.

What are your thoughts on coil cleaning? Do you rinse coils with just water or do you use a cleaner? What type of coil cleaner do you use? Our Powder Kegs powdered coil cleaner is inexpensive, easy to transport and easy to use.

Technical Corner: “Did You Know – HVAC Corrosion”

Corrosion is found everywhere. Structures such as bridges, buildings, radio towers, and marine vessels all experience it. Corrosion results in billions of dollars per year worth of damage, and potential hazards to human life.

Studies on corrosion over the past centuries have been numerous. The National Association of Corrosion Engineers have for decades been deeply involved in how corrosion occurs and under what circumstances.

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One major area of corrosion many are too familiar with occurs in the HVAC field. In this area corrosion can take many forms and affect many areas. For example, a critical area of concern is often what a person doesn’t see.

Chilled water systems often corrode, causing metal deterioration and pitting on the inside of water piping, and inside condenser tubes in the chiller unit itself. Costs for retubing a chilled water condenser is expensive and time consuming. For this reason, one would be foolish not to monitor the corrosion in this closed system.
Corrotted-coil--new
Another area frequently attacked by corrosion are evaporator coils and outside condenser coils. Typically, corrosion of these coil types results in aluminum corrosion or whitish aluminum oxide deposits being seen.

Costs each year are huge. One major manufacturer of PTAC (packaged terminal air conditioners) lost over 8 million dollars in just one year due to warrantee replacements due to corrosion. Although the vast majority of corrosion related issues are located in coastal regions, corrosion also affect inland units as well. It is not uncommon for AC units in Illinois or other midwestern states to experience other types of corrosion.

Suffice it to say, in no cases I have run into over the past few decades were owners pleased with the prospect of replacing their units. Even the smaller PTAC units have replacement costs exceeding $1,200 or more each.

Not much for big business to handle when looked at as a single unit, but when one considers that many hotels have upwards of 300 – 400 units, you can see over $500,000 being spent. Not too many firms can withstand this type of expenditure every few years.
coil%20shield
There are many ways to handle and prevent corrosion. The easiest way is to prevent it from happening in the first place.

In part 2 of this blog, we will address solutions to a few of these corrosion types.

lynnLynn Burkhart is the founder and president of Controlled Release Technologies, Inc. located in Shelby, North Carolina. More information about the company, and its products, can be found at http://www.cleanac.com and by calling (800) 766-9057.

Case In Point: Coil Shield…What is it and how does it work?

Coil Shield is a condenser coil spray applied annually, that provides a clear molecular coating of protection. Coil Shield significantly reduces coil corrosion under the most aggressive conditions.

Silver Dunes has been using our product since 2009 and we look forward to many more years of servicing them.

Silver Dunes Condominiums Recommendation

Preferred Client Services of Controlled Release Technologies, Inc., a research, development and manufacturing firm based in Shelby, North Carolina.  CRT is an IFMA CSP, an EnergyStar Partner and manufacturer of independently-certified Green products for HVAC maintenance. Since 1986, CRT has been creating leading edge HVAC maintenance products that have become industry standards, used in thousands of commercial buildings world-wide. CRT employees are members of BOMA, ASHRAE, ASHE and the American Chemical Society. www.cleanac.com