In commercial HVAC, an outdoor coil is the heat exchanger installed in the outdoor section of an air-conditioning, refrigeration or heat pump system. During cooling, it removes heat from the refrigerant and releases it into the outdoor air. What is an Outdoor Coil? Outdoor coils are used in packaged rooftop units, split commercial systems, air-cooled […]
Microchannel cooling is being used more often in HVAC equipment for a few reasons. OEMs want better efficiency, lower refrigerant charge, and more capacity in a smaller cabinet. Microchannel coils help with that by using flat aluminum multi-port tubes instead of traditional round copper tubes. Refrigerant moves through a series of small internal passages rather […]
Heat exchangers transfer heat from one medium to another. In commercial and industrial HVAC/R systems, that heat transfer affects equipment capacity, energy consumption, and operating costs. When people talk about heat exchanger thermal efficiency, they are usually trying to answer a simple question: How well is the equipment transferring heat? Technicians and engineers may use […]
Ice on an evaporator coil is not normal. In commercial and industrial HVAC/R systems, evaporator coil freezing up is a symptom of an underlying imbalance, such as typically airflow, refrigerant conditions, or heat transfer limitations. When left unaddressed, you can end up damaging the compressor. What’s Actually Happening When a Coil Freezes An evaporator coil […]
Heat exchanger efficiency is one of the most important (and often overlooked) factors in HVAC system performance. While equipment selection often gets the most attention, the coil itself handles the actual heat transfer. Poor coil design or degraded coil condition can affect energy costs, capacity, equipment life, and more. What is Heat Exchanger Efficiency? In […]
In high demand environments such as manufacturing floors, data centers, healthcare facilities, and processing plants, capacity loss is not a minor comfort issue. It can seriously impact production or operations. In this guide, the experts at CS Coil explain what causes an evaporator coil leak, how to identify the warning signs, and the best solutions. […]
When a system stops cooling and the diagnosis is a failed coil, the next question is usually: Do you replace the coil, or do you replace the entire unit? The answer depends on system age, refrigerant, compressor condition and how long the owner plans to keep the equipment. In this guide we break down AC coil […]
Over the past decade, microchannel coils have moved from being viewed as niche or automotive derived to being widely used across HVAC, refrigeration and process cooling. Below is a comparison guide of microchannel coils vs. regular coils, written by people who design and manufacture them! Regular Coils: Traditional Round-Tube Plate-Fin Round-tube plate-fin coils have been used […]
Do you suspect your evaporator coil needs replacing? Evaporator coil replacement is typically only necessary when a coil begins to fail, but understanding the early warning signs can help prevent larger system issues. Keep reading to find out what to look for. What the Evaporator Coil Does in an HVAC System During normal operation, the […]
Your HVAC system is one of the most important (and expensive) assets in your building. Yet, one of its most exposed components, the coils, often lacks protection. HVAC coil coatings are designed to shield these coils from corrosion, contaminants, and chemical exposure, all of which can shorten performance and lifespan. What is HVAC Coil Coating? […]
A direct expansion evaporator (DX evaporator) is a component found in most HVAC and refrigeration systems. It’s a very important part because it’s where the refrigerant absorbs heat. In this article, we’ll explain what it is, how it works, plus a few things to pay attention to when it comes to design and maintenance. What […]
The move from round-tube plate-fin heat exchangers to microchannel heat exchangers (MCHEs) has changed the HVAC and refrigeration industry. MCHEs are now common in high-efficiency systems. They cut refrigerant charge, deliver higher UA values, and pack a lot of performance into a small footprint. Let’s take a closer look at what they are, how they […]