A Diagnostic “Brain Cloud”


When you start looking seriously at how the HVAC industry approaches system Performance Diagnostics, it is truly amazing.   When it comes to system performance diagnostics … every logical, rational, and reasonable diagnostic procedure that technicians commonly use in every other situation … gets thrown under the bus.

 Think of it this way:  when a technician approaches a system that isn’t working, they always start with the BIG PICTURE first.  Their first diagnostic question is “what is making noise and what isn’t.”

That is to say what is running and what isn’t ?  Any reasonable diagnostic procedure starts like this ….by excluding everything that is right … and then wisely concentrating the available time and resources looking for what isn’t right.

For example:  If the outdoor condenser fan motor is running but the compressor is not … I can reasonably eliminate …. the voltage to the indoor unit, the transformer, the thermostat, the control wiring to the outside unit, the contractor, and high voltage to the outside unit from my diagnostic plan.

HOWEVER:  A technician with no diagnostic skills whatsoever … might approach the same system by ohming the contactor coil … and then ohming the compressor … and then getting a microfarad reading on the capacitors.

IN OTHER WORDS, the person with no diagnostic skills might verify each component of the system BEFORE they look at the system as a whole.

When it comes to Performance Diagnostics,  the HVAC industry seems to have develop just this kind of “diagnostic brain cloud” ….we forget everything we know about diagnostic procedures and start …measuring all the individual components that make up system performance … we measure refrigerant pressures, refrigerant sub cooling and super heat, and we attempt to measure air flow, we might even measure the dry bulb difference between return and supply air   … and then we assume that if each of these time consuming  measurements are within our rule of thumb understanding  … that our system performance must be correct.

Quite frankly … If this was the only way to do a system performance diagnostics … I completely understand why no one does it.

That’s why we designed Total Performance Diagnostics.  We start with the BIG PICTURE.  We calculate total system performance first … as quickly, efficiently and accurately as possible  …

If a 48,000 BTU system is producing 47,000 BTU’s … What are you supposed to do to make it work better?  Why are you going to verify refrigerant charge?  Why are you measuring super heat and sub cooling and why would you want to measure the static pressures in the return and supply ducts?

It’s like getting an ohm reading on the contactor coil when the contactor is engaged and the condenser fan motor is running.   You’re just wasting time gathering useless information.

We designed Total Performance Diagnostics because it makes sense, it makes better operating systems, and because it makes contractors money.

This is what you’ll see … when the brain cloud clears and the sun shines thru.

1. You’ve been letting a lot of sales slip thru your fingers and you’ve been leaving your clients with some pretty poorly operating HVAC equipment.

2. You’ve probably been doing the best you know how.   But it’s taking longer than it should and the information you have been getting doesn’t really mean what you think it means.

3. What you’ve been doing isn’t working because …the tools you are using were never designed to do what you have been trying to do with them.  Old School vs  New Tools

4. It wasn’t your fault … until right now … because the tools and technology you needed didn’t exist before Total Performance Diagnostics put them all together, and you didn’t know about Total Performance Diagnostics before now.

5. You just need to clear away the clouds and make the decision to stop wasting time and start making money.