Tech Tips

Tech Tips is another great way that Ferguson HVAC EastWest Air brings you more information without leaving your place of business. We have expert staff eager to share articles about the equipment you use. Read about solutions, best practices and user guides for all of your major equipment needs.

July 26, 2019

How to Diagnose a Failed TXV

TXV’s are often misdiagnosed, but this article will help clarify why that happens as well as how to properly diagnose a TXV failure. A TXV can be incorrectly diagnosed if a technician finds a system with low suction pressure and assumes it means low refrigerant. When they add refrigerant, they will see that suction isn’t […]

July 19, 2019

Properly Mounting a Thermostatic Expansion Valve (TXV) Bulb

Most manufacturers ship the TXV sensing bulb attached to the suction line of the coil.  This is to prevent the sensing bulb capillary tube from breaking in shipment. To properly install the coil, set it in place on the top, bottom or side of the furnace. Completely cover the TXV with cold rags or brazing […]

July 19, 2019

Brazing Tip

Always run a slight amount of nitrogen through your copper lines as you braze.  This prevents oxidation and solder ash that will contaminate your system, block your TXV’s and clog your filter driers.  Just a very small amount (1/4 pound) of nitrogen running through the lines as you braze will keep your system clean and […]

July 19, 2019

Pulling A Vacuum

When pulling a vacuum, always pull the first vacuum with the schrader cores out of the king valves.  This will remove any debris that could contaminate your system.  Then, install the schrader cores and pull a final vacuum.  Don’t forget to change your vacuum pump oil regularly.

May 30, 2019

Tech Tip: Refrigerant Recovery Best Practices

Recovery is the removal of refrigerant from a system to either store and send in for recycling or to reintroduce back into the same system. Here are a dozen top tips for refrigerant recovery: Make sure your tank is empty and evacuated to 300 microns if you plan to return the refrigerant back into the […]