Boca Raton Hospital Covid-19 Care Condenser Coils

In (3) days, Capital Coil & Air Manufactured and Delivered (4) Large Condenser Coils!!

A large HVAC contractor in South Florida recently contacted Capital Coil & Air with a request to modify an existing system of Carrier 38 Series Microchannel Coils with (4) large condenser coils on an emergency basis. The main goal was to change over from microchannel to standard copper tube/aluminum fin condenser coils. The one expressed requirement for this project was that this change needed to happen very quickly. See below for a summary and timeline of the project:

Condenser Coils
  1. Monday – The contractor reached out to Capital Coil & Air with the required information needed for new condenser coils.
  2. Tuesday – Capital Coil calculated the changeover from microchannel to standard coils for this retrofit. Capital Coil & Air then provided all of the necessary engineering and pricing data for the order. Included were all of the condenser coil drawings, ready for the customer’s approval, as well as all of the needed IOM’s (Installation, Operation & Maintenance Manual) for eventual installation.
  3. Wednesday – By Wednesday morning, the contractor approved the drawings and allowed the project to move forward. Construction on the coils began that afternoon. In less than 1.5 days, this job went from a brief phone discussion into full production!
  4. Friday – The coils were completed, crated and made ready to ship in less than 48 hours after production commenced. Capital Coil then contacted FedEx to ensure that the coils would be picked up that same Friday and overnighted to South Florida for Saturday delivery to the jobsite.
  5. Saturday – The contractor received the condenser coils and installation was completed that same weekend!

In all, the time from the original phone call to installation occurred in less than a week. Capital Coil takes great pride in our response times, as well as our ability to handle projects in emergency situations.

For various reasons, the HVAC industry has always required quick-shipments. Capital Coil’s 99% success rate with quick-shipments over the last 5+ years has us particularly well-suited to handle whatever situations may occur during the Covid-19 emergency. Please do not take any chances with “untested” manufacturers right now, and please consider Capital Coil for all of your quick-ship needs!!

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Condenser Coils Failing? Here’s probably why….

Did you recently turn on your DX systems only to find your Condenser Coils are not working?  Simple fix right?  Unfortunately, no.  If you get lucky, you can send us the model number of the unit, and there’s a great chance we’ve already built it.  In the case that we do not have that model number on file, you have two options.  You can go back to Carrier and wait two months for an OEM part while paying through the roof.  Or you call Capital Coil, and we’ll walk you through the engineering it takes to replace a condenser coil.                                                                      Condenser Coil

Very rarely do condenser coils ever freeze so the first thing you’re going to want to know is if your coil died of corrosion, old age, or possibly vibration.  Old age is obviously preferable because with a few easy dimensions, we’ll have enough to price up your duplicate coil.  Condenser coils are usually outside and are easily accessible for measurements and digital pictures.  With just the size, the rows, and fins/inch, you can get a price.  And digital pictures of the headers and return bends will give us a good idea of the circuiting and sub-cooler circuits. 

If the coil has been eaten away by corrosion, it was an improper design to begin with.  Most people don’t know that salt in the air will ruin aluminum fins within a year or two.  There are two ways to combat this.  The first option is to make the switch to copper fins and stainless steel casings.  While this will extend the life of your coil considerably, most people are not too happy about the additional cost over aluminum fins.  The second option is to use a coating.  Coatings are the much more popular choice.  They are a fraction of the cost as copper fins and only add one week to your lead time. 

When your HVAC coils are installed near a moving piece of equipment, vibration can occur and cause leaks.  The area where these leaks occur is very important and will clue you in to if the problem is vibration.  If they are near the tube sheet and look like they are slicing through the tube, the coils should be isolated from the rest of the system to prevent vibration from causing damage.  One way to combat this is by oversizing the tubesheet holes, but many manufacturers will not do this.  Condenser coils are usually the most common victims of vibration.

The last concern is with cleaning condenser coils.  Since condenser coils see outside air almost exclusively, they need to be cleaned more than other coils.  The reason for this is most condenser coils have fin spacing of 12-20 fins/inch.  With fins that tight together, the coil can and will act like a filter.  And when the coil is clogged up, the performance suffers greatly.  Recently, we’ve been getting more and more calls about using a heavier fin thickness.  This is to help with high pressure cleaning and corrosive cleaning agents. 

When dealing with an HVAC coil manufacturer, partner up with one who will walk you through the engineering and explain it along the way. Capital Coil & Air has well over a decade of experience and has seen every issue to make sure your everything from the quote to the installation go smoothly! Give us a try on your next project!

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