Liquid line filter drier installed backwards. There are two types of filter driers.

Liquid line filter drier installed backwards. Jul 28, 2016 · The liquid line was sweating at the evaporator coil . Aug 19, 2020 · How can you tell if you have a clogged liquid line filter drier? If there is a noticeable temperature drop from one side of the filter drier to the other, this means that there is a pressure drop. Mar 1, 2025 · If installed backwards, the filter drier will become useless. Mainly care needs to be taken not to damage the valves on the condenser, which can become damaged from heat when soldering in a new drier. On this video I will show you the location of and the purpose for installing a liquid line filter drier on every air conditioner and heat pump installation. In this video I test a one way filter drier to see how well it works in reverse. Removing a brazed filter-drier with a torch flame causes moisture to be driven out of the desiccant and into the system. Use a tubing bender to place necessary bends in liquid line (possible in an ‘S’ shape) to add this extra length. Filter-driers are most commonly installed in the Liquid Line. Take care not to overheat the newly installed filter drier when using a torch for brazing a sweat-type drier to the liquid line. Feb 12, 2024 · The filter drier can be installed in horizontal position or vertical position. Yep, it's right, but if you were wondering, if they are backwards they have a chance of blowing parts of the core into the system. There are two types of filter driers. The purpose of the filter drier is to Nov 21, 2020 · Consequences – A periodic check of the HVAC&R System is required and this includes checking the condition of the filter drier and the best indicator of the health of the liquid line filter drier is through the Liquid Indicator. everything is checking out ok but i noticed that a liquid line dryer that was previously installed was backwards. It shouldn't be too bad to fix, just suck the juice back into the unit by closing the liquid valve & pushing in the contactor until the suction port drops down low. This will result in an internal restriction Liquid line filter-driers are often referred to as system protectors because they remove harmful elements from the circulating refrigerants and lubricants before serious damage results. Glass wool and non-woven fabric ensure When it comes to Liquid Line Filter Dryer Refrigerant Filter Driers, you can count on Grainger. On bi-flow dryers there's a screen on both sides to prevent this but not the case on ones used on a/c only systems. Placing the filter drier here ensures it can effectively remove any moisture or contaminants from the refrigerant before it passes through the expansion device and evaporator coil. Filter driers are typically located in the liquid line of the system, between the condenser and the expansion valv May 18, 2014 · I’ve had a lot of techs tell me that the liquid line filter drier should be installed on the line closest to the evaporator. Aug 18, 2019 · Is your air conditioner’s liquid line filter drier clogged? One of the most common problems that air conditioning systems may face is a plugged or clogged liquid line filter drier, which helps to keep water and dirt out of the compressor. May 28, 2017 · Therefore, locating a filter-drier in a cooler location is an advantage. I don't think he understood that this Cut out of liquid line a length 1 inch less than the length of the filter, (see diagram below) with a tubing cutter and remove any burrs or shavings from inside remaining lines. May 12, 2025 · If installed backwards, the filter drier will become useless. Remove any remaining loose fragments of hose so they do not get into the air conditioning system. Liquid Line Filter Driers Liquid line filter driers are the most common type of filter drier, installed in the liquid line of your HVAC system. We’ve covered how expansion valves (Thermal and electronic), heat exchangers and refrigerants work in our previous tutorials, do check those out. The majority of filters will work when installed backwards. Insert Tubes into Press/Push Fittings: Push the tubes into the Press/Push fittings at both sides of the Filter Drier until they reach the marked depth. when installed backwards its filtered first then dried which wont cause any issues for a long time if the filter drier was installed properly. Dec 1, 2005 · What happens if the refrigerant flows backwards through a liquid line filter-drier, that is, opposite the arrows printed on it? Is this a no-no? Feb 9, 2024 · Filter driers are devices that are used to filter and dry the refrigerant in a refrigeration system. Filter driers are typically located in the liquid line of the system, between the condenser and the expansion valv Dec 28, 2022 · Ever wondered what happens if you put the air conditioner filter in backwards? Wonder no more! Here's a breakdown of what can happen if you do. Am I missing something? Any thoughts or advice would be helpful. Sep 20, 2006 · What happens if the refrigerant flows backwards through a liquid line filter-drier, that is, opposite the arrows printed on it? Is this a no-no? Mar 26, 2024 · In the world of filtration systems, the proper installation of filters plays a critical role in ensuring functionality and efficiency. Usually no ports are available at the inlet or outlet of the liquid line Aug 14, 2023 · Where is the optimal location for the filter drier in a refrigeration system? In a refrigeration system, the ideal location for the filter drier is just before the expansion device, within the liquid line. Try to make the cut as square as possible. When should I install filter drier? Feb 22, 2025 · If installed backwards, the filter drier will become useless. Reply reply baconegg2 • Agreed Reply reply ForeverTerminal • Apr 2, 2016 · I'm talking about the type that's commonly installed above ceilings in office buildings. If the right placement is close to the evaporator then why Liquid line filter-driers are typically installed in the liquid line to capture particles before refrigerant enters the expansion valve, while bi-flow filter-driers function effectively in heat pump systems by allowing refrigerant flow in both directions. Install hose clamps over both remaining sections of hose. Also have a 10 degree temperature difference from the liquid line at the evaporator coil and the liquid line at the condenser. Feb 7, 2019 · This is a very typical model filter drier and we’ll find these installed in the liquid line of the refrigeration system, between the condenser and the expansion valve. A fellow tech replaced a compressor in one and installed a bi-directional liquid line drier in the line right before the TXV that's attached to the air side coil. When installing a new filter drier, an arrow on the filter drier’s housing will indicate which direction refrigerant is designed to flow. Many condensing units come with a filter drier pre-installed inside of the unit. If the right placement is close to the evaporator then why Aug 1, 2025 · A correctly sized, properly installed filter drier in HVAC stops those threats before they start. Install the filter – slide nuts end of liquid line into filter fitting. This Sep 15, 2014 · Obviously the liquid line filter drier was clogged, the A-coil was dirty, and from what I was taught the system would have shown low suction pressures with a dirty A-coil, and low suction with High head pressure and a temperature difference >1 if the filter drier was clogged. Filter-driers get their name from encompassing both a filter for grabbing small particles and debris, and a drier, which is the Desiccant element (loves moisture). Install Filter Drier: Insert the press/push fitting one of the Filter Drier, ensuring they reach the marked depth. , and the perforated disc at the inlet helps to distribute the refrigerant flow inside the filter drier evenly. Heat pumps are different though because they change the direction of the refrigerant flow when they switch from cooling mode to heat mode and vice versa. A suction line filter drier is placed after the evaporator and before the compressor. A filter drier is a simple device, but the correct steps must be done during an installation. Most install it outside where it will deteriorate a helluva lot quicker. Use of tubing bender is required. A. NOTE: Do not install o-rings at this time. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Liquid-line Filter Driers are installed within the smaller, non-insulated copper line that carries refrigerant from the condenser coil to the evaporator coil. Using a sharp knife, remove 3 1⁄2 inches of hose. Jun 9, 2022 · The filter drier is designed to remove moisture from the air, and if it’s installed backwards, it can’t do its job properly. Remove filter – lubricate o-rings with refrigerant oil and install on liquid lines – reinstall filter and tighten nuts to 10 to 12 foot pounds. Return about a month later, remove the suction drier and replace the liquid line filter. Mar 31, 2025 · Understanding Filter-Driers “ Filter-Driers ” are more commonly referred to as just “Driers” as their trade name. First, make sure the burnout is “severe” by testing the acidity of the oil from the burned out compressor using the Parker Sporlan TA-1 Acid Test Kit. They will not trap nearly the same amount of particulates that they would in the correct direction, and they will plug up easier, but they will likely work as well or nearly as well when installed into a clean system. The arrow should be same as the suction line filter drier flow direction. I said, probably the bad TXV he spoke of, or maybe a restriction in the filter dryer. when installed properly the refrigerant hits the drier section then the filter section keeping crap out of the stream. The warm (return) line for my AC condenser has an inline Liquid Line Filter Drier. In this blog, you will get to know what a filter drier in HVAC is, how it works, the types on the market, how to choose the right size, and the best way to install and maintain it. For best performance, the suction line filter drier installation as close as possible to the compressor inlet. Nov 1, 2023 · Filter driers are usually installed in the liquid line after the liquid receiver. However, the arrow on the unit points in the opposite direction of how I'd assume the flow is. it will run fine until the insides start to break up. My tech looked at the liquid line solenoid and it's only got one arrow, pointing towards the indoor. The liquid refrigerant carries moisture, acids, metallic particle, sludge, etc. what can happen if a liquid line drier gets installed backwards? with the arrow pointing towards the condenser rather then then the evaporator. May 18, 2014 · I’ve had a lot of techs tell me that the liquid line filter drier should be installed on the line closest to the evaporator. What is the effect if your filter drier is blocked? What happens when a receiver drier fails? The filter drier is not only the right direction but they also installed it inside. Put the unit back in service and everyting works okay, but then found out later we installed the liquid drier backward. Make sure he cuts the drier out - not using a torch - the heat free's the moisture into the system! Never allow 2 filter driers in one liquid line - it spells issues and pressure drops taking up the subcooling alloted for friction of the linesets. I ask them why would the manufacturer recommend that and other manufacturers install them on the condenser. Jun 10, 2011 · It is installed in the basement of a home in Illinois by prior owners who themselves did poorly at things they DIY but seemed to hire quality contractors. One of the important things to consider when installing a filter drier is the direction of the arrow The liquid line filter drier stops the contaminants from blocking the evaporator coil's office or thermal expansion valve. Install filter on evaporator or condenser NOTE: These filters will add 4 inches of length to the liquid line. Attempts to bend the liquid line without a tubing bender could cause kinking of the line. Cut out of liquid line a length 1. Jul 16, 2024 · Filter driers remove contaminants and moisture from the refrigerant in HVAC systems. Correct me if I am wrong please. According to TROT, what is the maximum temperature drop across a liquid line filter drier before it requires replacement? LIQUID LINE FILTER DRIER INSTALL ON SPLIT SYSTEM. This device is used to protect the compressor, especially after any failure that contaminates the system. Jul 26, 2025 · A filter drier installed backward renders the component useless, meaning it will fail to effectively protect the refrigeration system from moisture and contaminants. Glen refrigeration suggest to install a suitable bracket to support the filter drier. To install the filter drier, locate 9 inches of straight line in the liquid or suction line. He also removes the liquid line filter-drier from the outdoor unit and moves it outside the outdoor unit. (or spend good money for things they contracted). You defined a filter drier and the difference between it and a bi flow, but didn’t actually answer the question. Sep 12, 2022 · What Is a Filter Drier? A filter drier is a filtration device that’s designed to remove contaminants, including moisture, from the refrigerant. Sep 15, 2014 · Obviously the liquid line filter drier was clogged, the A-coil was dirty, and from what I was taught the system would have shown low suction pressures with a dirty A-coil, and low suction with High head pressure and a temperature difference >1 if the filter drier was clogged. They protect the system and its components from contaminants such as water, dirt, and acid. Is this a major or minor problem to the system not working properly?????? I'm a bit new to this and havnt worked much with If installed backwards, the filter drier will become useless. Pros and Cons On the plus side, they’re effective and affordable. . However, a common oversight with potentially far-reaching consequences is the improper installation of filters, including the simple yet overlooked mistake of installing a filter backwards. Read the info on the drier or the manufacturer's data to make sure it is large enough so that you don't start with a restriction. Mar 1, 2015 · A directional filter drier in backwards would plug up faster than installed in the proper direction. Motor failure in the compressor usually causes acid and other contaminants to be introduced into the refrigerant system. First, they trap coarse particulate contamination and copper shavings, and second, they capture any moisture present in the system. This Filter-Driers, Air Conditioning & Refrigeration Components, HVACR Parts, including Gold Label Liquid Line Filter Drier, Copper Spun Drier, Bi-Flow. Should this be fixed? Mar 6, 2017 · Take care not to overheat the newly installed filter drier when using a torch for brazing a sweat-type drier to the liquid line. On the side of the filter drier you’ll find an arrow, this indicates the When should I install filter-drier? A filter-drier should be installed in the suction line to clean up a heat pump after severe hermetic motor burnout. We intend to go back this weekend when the building Jun 12, 2020 · Although a reversible filter-drier is usually installed in the reversing liquid line that runs between the indoor and outdoor sections of the heat pump, it does not add protection to the system and might result in excessive pressure drops, which hurt the capabilities of the machine. Single flow filter driers are fine for typical AC systems which flow only one way. after a few Liquid line filter-driers are typically installed in the liquid line to capture particles before refrigerant enters the expansion valve, while bi-flow filter-driers function effectively in heat pump systems by allowing refrigerant flow in both directions. Filter driers are usually installed in the liquid line, between the condenser and the expansion valve. Where does the liquid line filter-drier go? There's a liquid line solenoid installed. Jun 17, 2020 · Filter driers are usually installed in the liquid line of a dry-expansion refrigeration system, where they have a dual function. May 13, 2009 · Hey guys, i came across a unit today thats not cooling. Aug 23, 2012 · Assuming there is a byflow liquid line filter drier, how does one install suction line filter drier? I would assume by putting two side by side with a check valve and piping so it would only flow with the direction of the vapor. Feb 1, 2019 · James Hill gives a step-by-step description of how to replace a residential indoor TXV on a heat pump system. Liquid Line Filter Drier is installed in the liquid line of the HVAC&R System, after the Receiver and before expansion device such as Capillary, Thermostatic Expansion Valve or Electronic Expansion Valve. They contain a desiccant for moisture absorption and a filter medium to trap particles, ensuring clean refrigerant flow. Feb 6, 2023 · As with a liquid line filter drier, install a suction filter drier that is large enough for the system's capacity. It is also advisable to install a liquid-line moisture indicator so the technician can monitor the moisture level within the operating system; Install Filter Drier: Insert the press/push fitting one of the Filter Drier, ensuring they reach the marked depth. The only thing I would add, is if it is a compressor burnout you’re opening the system for, Install a suction drier as well. Apr 15, 2003 · I'm talking about the type that's commonly installed above ceilings in office buildings. With liquid line bottomed into fitting, tighten each nut firmly to 50 foot pounds. Discard the liquid line filter installation direction at which includes activated alumina, or services discussed at the condenser as the device. That's why heat pumps require a dual directional filter drier. However, with it being in only a couple weeks I doubt it is the cause of your current issue. Overheating may scorch the internal filters, drying agents, and other important parts of the dryer. If this is suspected, install a high-quality liquid-line filter drier. Apr 18, 2005 · I think the best way is to install a large drier in the liquid line at the condensing unit sized for the system capacity to handle the moisture and a second smaller on just ahead of the TXV as a final filter. Remember that temperature follows pressure and temperature is something that we can measure on the outside of the tubing. A filter drier's tubing size, refrigerant type, refrigerant flow rate and filtration capacities must match the condensing unit it protects. #HVAC #Filterdrier #HVACtrainingmore Replaced a muffler with a filter drier, installed the filter drier backwards so didn't even have a chance at catching the desiccant as it gets blown apart by the high temps and pressures. If installed backwards, the filter drier will become useless. 00 inches less than the length of the filter (see diagram) with a tubing cutter and remove any burrs or shavings from the inside remaining lines. They did you good on that. the arrow is because of the insides orientated of drier and filter. Description and Use These driers do a bang-up job at removing moisture and other impurities from the refrigerant, ensuring your system runs smoothly. Is this AC refrigerant line filter installed backwards? My house is 2 years old. Jun 24, 2024 · Emerson EK-164 liquid line filter driers being installed on site. No matter how many precautions are taken during assembly and installation or servicing of a system, contaminants can find (generate) their way into the system. Oct 30, 2019 · During a routine check up/tune-up of our HVAC heating system yesterday the worker noticed that the filter drier was installed backwards so that the arrow is not pointing towards the indoor coil. Nov 11, 2007 · The entire system should be recovered and new drier installed. Need to quote client to replace filter drier, and to also check the capullary Aug 11, 2009 · Worked on replacing a compressor on a package Lennox Heat Pump, and put a new liquid filter drier also. Mar 5, 2025 · Take care not to overheat the newly installed filter drier when using a torch for brazing a sweat-type drier to the liquid line. What happens if you put a filter dryer on backwards? When installing a new filter drier, an arrow on the filter drier’s housing will indicate which direction refrigerant is designed to flow. This HVAC Video is about where you should install a filter drier, what the job of a filter drier is, the potential for leaks in a filter drier or accumulator Nov 29, 2019 · When installing a new filter drier, an arrow on the filter drier’s housing will indicate which direction refrigerant is designed to flow. Opps! We goofed up. The high temperature and high-pressure liquid refrigerant enter the filter drier. Checked temperatures across the filter drier and got a 3 degree difference across it. I don't think he understood that this This is the best answer. Dec 4, 2024 · Liquid Line filter driers: This filter drier is mainly located in the liquid line of the refrigeration system and prevents the throttling device from clogging so the refrigerant entering the expansion or capillary valve is clean and dry. IIRC there's a bypass that'll open if it's installed backwards, which means won't filter, might dry. The brazed connections must be thoroughly cleaned and fluxed when called for. A suction line Symptoms similar to liquid line filter drier direction through the drier and hfc refrigerants in the sight glass because you are left in the core is ahead of the lines. This can lead to problems like reduced air flow, and it can also cause the filter drier to freeze up. When should I install filter drier? We would like to show you a description here but the site won’t allow us. On the downside, they can become Feb 22, 2025 · If installed backwards, the filter drier will become useless. At this point, I don't know how this ever ran as a heat pump. Make sure there is at least 1 inch of unobstructed ends on the remaining lines for clearance of nuts. 2zl bzm65 7ch tme l2 xohlh9 7q7n tox 9be lndh