Category: Split Systems

We were recently called out to a job site visit because the commons area and hallways of a multi-million dollar condominium building had humidity issues.  These areas were being served by...... Read More

For this solution to be successful, you will need to REDUCE the system airflow in addition to installing the Rawal valve.  Lowering system airflow does TWO things: It lowers...... Read More

One of the most common reasons for rooftop service calls is incorrect airflow.  Low airflow will often lead to frozen evaporator coils, low pressure trips, sweating ductwork and low...... Read More

If you’re installing a split commercial DX system, how do you know what kind of circuiting you need? And how do you install the piping and refrigerant specialties if...... Read More

Humidity, the 8th wonder of the world, is a tough nut to crack. Unlike sensible heat transfer, it’s very difficult to measure its movement into buildings through cracks, doorways, and other openings.But,...... Read More

If you are measuring a Direct Expansion (DX) or Chilled Water coil in the field, or just quoting a replacement coil, you can quickly estimate its nominal tonnage based...... Read More

EER, IEER, SEER, IPLV, HSPF… You have probably seen all of these terms before and never even thought of what the heck they stand for, or why you would...... Read More

Today’s residential HVAC replacement system buyers come in all flavors, but what we find is that most of them are looking first and foremost for a contractor that they...... Read More