Hello, A Friends uncle calls me up and asks me an HVAC question, so I figured that I would run it past the experts. This person works at an apartment complex that has approximately 320 units. The HVAC systems are packaged type central units with gas heat that are originals, or re-builds from the late 1970’s early 1980’s.
A new company has bought the complex, and they are doing upgrades, including hiring and professional HVAC Company to come out and do the service work, instead of the maintenance persons, which out of 6 only 2 were licensed.
All of the A/C units have “Slide Out” chassis and are from 1.5-2.5 tons in capacity. These are all cap tube units, and some are original, some are “cobbled together” over the years to keep them working.
The HVAC Company came out and did load calculations on each type of apartment offered, 5 in all, and realized that some of the systems are not properly sized.
To make a long story short, they want to rebuild all the systems over the next 2-3 years, and install all new compressors, motors, reman coils and what not. They also want to install TXV’s on the units, at an additional cost over the standard rebuild with the Cap Tubes, this is my question:
How much more Efficient will the TXV be over the cap tube systems?
Will they see an increase in performance?
Lower electric bills?
The reason that I ask this is I know that a TXV is more precise, however, these are not new units, and will be basically the old chassis with new or reman components. R-22 will be used in all units.
Again, this will be a professional HVAC company doing this, not DIY, not the maintenance personal.
Will the TXV be more trouble and cost than the older Cap Tubes?