Newsletters
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What is Heat Transfer?
There are many terms used in the HVAC Industry. One that is often misunderstood is heat transfer. Wikipedia’s definition states that......
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Invaluable Freeze Event Protection
USA Coil & Air has been marketing our patented, freeze-damage water and steam coil line for over 25 years under the......
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It’s Coil Replacement Season
The “holiday season” may be over, but the “coil replacement season” is in full swing in many areas of the country.......
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Can You Count on Coil Performance Expectations?
The HVAC industry has many manufacturers of units that all have heating and/or cooling coils as an integral part of their......
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Are Coils the Culprit Behind Decreased A/C Unit Cooling?
Almost all packaged A/C or split system units do not have a service factor for extra capacity. Even when new,......
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Are EC Motors Worth the Investment?
Air handling units that include single and double wall air handlers have had energy saving devices available for many decades. First,......
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Need to Add Cooling to an Existing HVAC System?
There are many existing systems that require the addition of cooling to a heating-only unit. Systems need to keep pace with......
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Fan Coil Unit Performance Issues
Many existing fan coil unit installations have inherent performance issues that relate to the original design and/or systemic conditions that decrease......
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Understanding Fan Coil Units
In the HVAC industry, “Fan Coil Unit” is a term that relates to the most inexpensive way to heat or cool......
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Industrial Coils
The generic terms “industrial “and “heavy duty” are used to describe an HVAC coil that has an arrangement and/or construction that......
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Preheat Steam Coils – Creating Higher Performance and Longevity
Most HVAC steam heating coils operate with steam pressure below 25 PSIG, and a very large percentage are below 15 PSIG.......
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Maintaining Your Air Handler
Central station air handlers require constant attention to ensure the units perform efficiently and have a longevity of up to......
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So… You Think Coil Quality is an Easy Task?
Coils are an unusual piece of equipment and often very misunderstood by most of the HVAC Industry. At USA Coil &......
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Alternatives for Installing Replacement Coils that are too Long
Many heating and cooling coils are installed in air handling units with very limited access to the unit. This often occurs......
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Capacity Changes
It’s often difficult to understand circuitry on a chilled water coil. Changes to the “circuitry” and changes to the “tube diameter”......
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Pros and Cons of Anti-Freeze in Water Coils
Operating water coils that are prone to air temperatures below freezing normally need the use of anti-freeze. The most common is......
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Big Arena – Big Problems
The Mercedes Benz Superdome in New Orleans is world renowned. It’s the largest fixed domed structure in the world and has......
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What Happens When a Coil is Loaded with Dirt?
Finned tube coils are meant to have contact with the air flow, as more contact creates more heat transfer. Heat transfer......
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Duct Booster Coils- Selection and Sizing
Many projects require downstream duct mounted coils to heat or cool air to its final desired temperature. Normally there are upstream......
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The Effects of Coil Selection with Outside Air Loads
HVAC and process heating/cooling must deal with the added tonnage created by using fresh air from outside. Most times, the requirement......
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Florida Freeze Warning
Florida is known for its beautiful beaches, great weather, pristine communities, and senior traffic heading to the “Early Bird Specials”. For......
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Why Cooling Coils Need to be Replaced
In a perfect world, most cooling coils should operate efficiently for twenty years or more. Lack of proper maintenance, inappropriate applications,......
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10 Reasons Why Hot Water Heating Coils Fail
There are many reasons why hot water coils in your system can under-perform. Some reasons are from the time of the......
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Water Cooling and Heating Coils
Water Cooling and Heating Coils Water is the most widely used heat transfer medium because it’s readily available and low......
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Common Problems with Fan Coil Units in Residences
Many fan coil unit installations are in condos, apartments, townhouses, hotels, and other types of lodging. Most systems are two or......
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How to Get Your Replacement Coils Delivered on Time
Replacement coils are different than most parts of an air conditioning or heating system. Replacement coils are not in stock and......
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‘Tis the Season for Coil Emergencies
Around Christmas and New Year’s is always the busiest time of the year for all of us. It’s truly the......
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How Does an Evaporator Coil Work?
Evaporator coils are a mystery to many technicians and engineers in the HVAC industry. Evaporator coils don’t have any movable......
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Why Do We Replace So Many Coils?
Coil replacement has been a part of the HVAC aftermarket for as long as finned tube coils have been used to......
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What Creates Coil Freeze Events?
There are numerous reasons why water and steam coils can have major freeze events. The damage is often extensive enough to......
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Got the Condenser Coil Blues?
Although there are a myriad of reasons why A/C and refrigeration systems have problems, many of them can be traced back......
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The Many Benefits of Replacing Indoor Central Station Units
For years, owners have looked at dilapidated, rusted out air handling units in their mechanical rooms and thought, “If I......
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Difficulties Replacing Old Central Station Air Handlers
Large indoor and outdoor central station air handlers eventually wear out and require either a complete refurbishment or replacement. They are......
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When is it Time to Finally Replace a Coil?
Replacing heat exchanger coils was adapted ever since the beginning of the HVAC and processing/cooling era. It’s now close to......
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Hot Water Booster Coil Selection & Special Situations
If you’re in the HVAC industry, then you’ve been involved in projects and installations that have duct mounted booster heating coils.......
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Heating Coil System Performance Problems
Most heating coils are either a preheat or reheat coil mounted in a unit. Also, reheat coils can be mounted downstream......
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Alternative to Replacing Long Coils
Many heating and cooling coils are installed in air handling units with very limited access to the unit. This often occurs......
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U-tube and Straight Tube Bundle Deterioration
USA Coil & Air manufactures shell and tube heat exchangers and replacement tube bundles for existing equipment. Most of our applications......
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When Is It Time To Finally Replace A Coil?
in allReplacing heat exchanger coils has been taking place since the beginning of the HVAC and processing and cooling era. It’s now......
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Hot Water Booster Coil Selection & Special Situations
If you’re in the HVAC industry, then you’ve been involved in projects and installations that have duct mounted booster heating coils. ......
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Do You Have Corrosive Agents in Your Condensate?
in allSituation: Fourteen-year old steam coils with no previous leaks suddenly develop multiple leaks over the following two or three years –......
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How to Get Your Replacement Coils Delivered on Time
in allReplacement coils are different than most parts of an air conditioning or heating system. By and large, replacement coils are not......
Latest From The Blog
View our latest blog news
-
What is Heat Transfer?
There are many terms used in the HVAC Industry. One that is often misunderstood is heat transfer. Wikipedia’s definition states that......
-
Invaluable Freeze Event Protection
USA Coil & Air has been marketing our patented, freeze-damage water and steam coil line for over 25 years under the......
-
It’s Coil Replacement Season
The “holiday season” may be over, but the “coil replacement season” is in full swing in many areas of the country.......