The HVAC Coil Blog

Understanding a booster coil schedule

Posted By Tommy Thompson On 10/09/2017 at 03:39PM

A booster coil is a hot water coil that is used for duct-mounted applications. Booster coils are commonly found in commercial buildings with large occupancy spaces and onsite boilers.

Our customers often get booster schedules from jobs they bid on. Selecting the best booster coils for these jobs begins with understanding the booster schedule. Let’s start by defining the abbreviations on the booster schedule:

FH - Fin Height FL - Fin Length Rows - Number of tubes deep FPI - Fins Per Inch MBH - 1,000 BTUs per hour EAT - Entering Air Temp LAT - Leaving Air Temp CFM - Cubic Feet per Minute FPM - Feet Per Minute APD - Air Pressure Drop Fluid - Water, glycol or steam EFT - Entering Fluid Temp LFT - Leaving Fluid Temp GPM - Gallons Per Minute FPD - Fluid Pressure Drop Conn - Connection size Weight - Dry weight of the coil

Now that you know what the abbreviations in your schedule mean, you can search for the right coil for your project online by going to the stock coil section of our website. You can search for booster coils using specifications, like Fin Height (FH), Fin Length (FL) and Rows. Once you narrow down your options, you can use the performance data listed for each booster coil to find the best fit.

If you don’t find what you need in our stock coil section, please contact us. Emergent Coils provides custom booster coils and hot water coils to meet your exact specifications. Blank drawings can be downloaded from the website to serve as measuring guides for custom coils. We also offer quick build options, so you can have coils within two days. To learn more about Emergent Coils’ stock coil database or if you need help selecting the best booster coils based on a booster schedule, contact us at 1-855-Coil-Now or today.

Having trouble finding replacement tube bundles for Mammoth HVAC equipment?

Posted By Tommy Thompson On 09/26/2017 at 10:15AM

If you’re looking for quality replacement evaporative condensing bare tube bundles for Mammoth HVAC equipment, look no further. Emergent Coils noticed a need for this type of heat exchanger, and we now carry evaporative condensing bare tube bundles. These tube bundles can be used to replace existing tube bundles or as OEM evaporative condensing bare tube bundles. Custom sizes are available.

Evaporative condensing units with bare tube bundles are ideal for use in commercial applications, such as hospitals, universities, office buildings, industrial complexes, production facilities, to name a few. These bare tube bundles are a critical component of the highly efficient condensing units manufactured by Mammoth and other brands of installed systems that utilize copper tube evaporative condensers.

Evaporative condensing units cool more efficiently than air-cooled units because the surface of the refrigerant tubes is sprayed with water, thereby allowing the tube bundles to reject more heat than in an air-cooled system with the same surface area and airflow. The bare tube bundles are constructed from copper to provide optimal heat transfer. The increased efficiency of the evaporative-cooled unit results in decreased energy usage and operational costs.

Installing new evaporative condensing bare tube bundles is an economical way to improve performance and extend the life of your existing Mammoth HVAC equipment, rather than replacing the entire unit. If you need help determining the tube bundle size and dimensions, our specialists are available to assist you.

We recommend upgrading or replacing bare tube bundles when systems are not at peak usage, if possible. Pre-planning allows you to save time and money, and limits inconveniencing the people working in your buildings.

For questions or to order evaporative condensing bare tube bundles, please contact us at 1-855-COIL-NOW (1-855-264-5669) or

Performance Data for Stock Coils Now Available

Posted By Tommy Thompson On 09/12/2017 at 08:26AM

Our searchable database of stock coils contains of over 200,000 hot water coils and stock booster coils, and includes part numbers and prices. We recently added performance data to stock coil descriptions to make it easier for HVAC professionals to select and purchase new and replacement coils.

The stock coil database allows you to run searches based on specifications, including: Tube Diameter, Casing Type, Rows, Fin Height, Fin Length, Fins Per Inch and Connection Size. The newly added performance data includes: Capacity, Air Flow Rate, Entering Air Temp, Leaving Air Temp, Air Pressure Drop, Entering Fluid Temperature, Leaving Fluid Temperature and Fluid Pressure Drop.

After you narrow down options based on specifications, you can view performance data to find the right fit for your HVAC system. For example, if 36,000 BTUs are required for an HVAC system, you can review the Capacity data to find a stock coil with the right tonnage. Or if you have a concern about water or fluid pressure drop, you can see how a specific hot water coil will do under standard conditions.

Emergent Coils offers a wide range of stock coils with prices starting at $150 to $500, depending on the type and size of coil needed. Stock coils are typically shipped within three to five business days.

We also offer quick build options, so you can have coils within two days. For HVAC professionals in need of custom coils, Emergent Coils provides custom hot water coils and booster coils to meet exact specifications. Blank drawings can be downloaded from the website to serve as measuring guides for custom coils.
To learn more about Emergent Coils’ stock coil database or if you need help selecting the best new or replacement hot water coil for your HVAC system, contact us at 1-855-Coil-Now or today.

5 Ways to Lower your Commercial Heating and Cooling Costs

Posted By Tommy Thompson On 08/28/2017 at 12:16PM

The cost of heating and cooling commercial buildings is a major expense. According to the U.S. Department of Energy, commercial buildings represent just under one-fifth of U.S. energy consumption, with office space, retail space, and educational facilities representing about half of commercial sector energy consumption. In an average commercial building, as much as 30% of the energy and cost that goes into powering heating, ventilation and air conditioning (HVAC) systems are wasted.

To lower the operating costs associated with heating and cooling your commercial building, reducing energy waste should be at the top of your list. Reducing waste can be as simple as routine maintenance. It could also mean investing in new energy-efficient heating and cooling solutions for your commercial building. Here are 5 ways to lower your heating and cooling costs: • Change your HVAC filters on a regular basis. Dirty filters make it harder for air to flow through the system, which requires more energy. Dirty filters also reduce indoor air quality and increase commercial HVAC maintenance issues and costs. This simple step can reduce waste by between 5-10%.

• Use programmable thermostats. Businesses can set thermostats to coincide with business/non-business hours to reduce energy waste. By automating these changes, people will remain comfortable during work hours. During non-business hours, thermostats can be set at higher temperatures in warmer months and lower temperatures in colder months when spaces are not in use, reducing energy consumption and lowering costs.

• Schedule routine HVAC maintenance. Routinely check HVAC systems for leaks, cracks and other signs of wear and tear that reduce heating and cooling capabilities. Damaged coils, improper seals and dirty filters are just a few of the things to look for. While it’s tempting to come up with low-cost temporary solutions, like patching leaking HVAC coils, performance goes down and the temporary fix might lead to problems with other heating and cooling components. If you have a leaking chilled water coil, hot water coil, steam coil or refrigerant coil contact us for a quote.

• Upgrade or replace HVAC equipment. HVAC systems wear out over time. Rather than putting more money into outdated, inefficient systems, upgrade elements or replace HVAC systems with energy efficient models. Consider buying ENERGY STAR-certified products, including furnaces, boilers, air conditioners and heat pumps. The increase in efficiency will offset the investment in new equipment.

• Look into tax incentives for upgrading equipment. Tax incentives may help offset the costs for energy efficiency upgrades in commercial buildings. To learn more about the tax incentives available under The Energy Policy Act of 2005 (EPACT) and The Emergency Economic Stabilization Act of 2008 extended provisions in EPACT, visit

Improving energy efficiency lowers overall commercial heating and cooling costs and saves valuable resources. To learn more about lowering your heating and cooling costs with commercial coil solutions, contact us at 1-855-Coil-Now or today.

Emergent Coils’ GSA Contract and Nonprofit Discounts

Posted By Tommy Thompson On 05/22/2017 at 08:36PM

I want to remind everyone that Emergent Coils has a GSA Contract and a Nonprofit Discount program. We wouldn’t want our government and nonprofit customers to miss out on these important opportunities.

GSA Contract

Emergent Coils was awarded GSA Contract No. GS-07F-130DA for Schedule 56 / SIN 563 27 on July 1, 2016 and the contract runs through June 30, 2021. This 5-year contract allows government agencies to efficiently purchase a wide range of HVAC coil products and services from Emergent Coils at approved pricing.

We are the government’s go-to source for new and replacement chilled water coils, hot water coils, steam coils, steam distribution coils, DX evaporator coils, condenser coils, stock booster coils, fan coils, tube bundles and heat exchangers. Having the contract speeds up the purchase process for our government customers.

Our products can be purchased directly through the GSA Advantage! Website Nonprofit / Charity Discounts We kicked off our charitable giving last year with a donation to Shepherd’s Field Children’s Village in Tianjin, China. Shepherd’s Field was in need of new equipment for its hydroponic greenhouse and we volunteered to design and install a better system for heating and cooling, including shade cover, fans, proper ventilation. The orphans at Shepherd’s Field now enjoy fresh organic produce straight from the greenhouse all year long.

This year, Emergent Coils is giving back to qualified nonprofits by offering a discount of 10% on HVAC coils and other products found on our website. Nonprofits need donations, grants and other revenue to fulfill their missions, which is why we want to do our part to reduce their operating expenses by lowering HVAC coil costs in 2017.

To qualify, nonprofit organizations must provide proof of their tax-exempt status under Section 501(c)(3) of the U.S. Internal Revenue Code when placing their order. For more information, visit Emergent Coils Non-profit For questions about our GSA Contract and Nonprofit Discount program, or to place an order, please contact us at 1-855-COIL-NOW (1-855-264-5669) or

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