HVAC Systems

The HVAC Systems module may look complicated, but it's not !  Give it as few or as many of the readings as you choose to use, and it will calculate everything it can with the available input - even the actual REAL operating BTUH capacity, and EER !    Plus, Temperature / Pressure charts for 38 refrigerants, in full IP and SI units !    See a sample system analysis report here in PDF,  HTML,  or RTF formats    See sample Pressure charts for R 22 here PDF ( temperature )  PDF ( Enthalpy )

       Just enter whatever factors you have, in whichever units you have them.  Skip any factors you don't have.  They are all common field readings that could be taken by any tech on any service call -

• What refrigerant is in use ?
• Suction line Temperature and pressure ( optionally at both compressor and evaporator )
• Liquid line Temperature and pressure ( optionally at both compressor and evaporator )
• Air temperatures across the coils ( DB and RH, or DB and WB, using the 'dial in' interface feature )
• Volts, amps, phases
• etc

    The screen updates in real-time as you input numbers.  The program can generate up to ~ 30 different 'Program Comment' diagnostic messages based on your input.

    The real-time screen results, and the printed report, include :

• Superheat for evaporator, condensor, and piping gain / loss
• Sub-cooling for the same set of system points
• KWH - evaporator, compressor, condensor, and total
• Actual current operating BTUH capacity
• Actual current operating EER for total system
• Diagnostic messages as appropriate
• And more !

    Imagine on that service call or follow up, when you're extolling the virtues of whatever service you are offering - coil cleaning, replacement units, whatever it may be, to be able to tell them 'Your system is actually performing at a tested EER of 7 today, and if you upgrade it to 14 SEER .... etc etc !  And have the report to back it up, all calculations done for you, based on the same common set of field measurements that would be included on any good service or inspection ticket anyway !

   Not only that, but > 30 different 'possible problems' and 'possible causes' are analyzed and reported by the program to aid and document your diagnosis !