Mixed use meter

Hi Alicia

It doesn't appear that this meter would qualify. You would have to meter at the end-use or by the major system type.

Thanks

Hannah

Hello,

My question is very similar to the above: we have 3 main meters, and one is dedicated exclusively to all of the HVAC applications (but does not give a breakdown of each type of system in the HVAC system - FCUs, Closed Cooling Units, Chillers, Chiller Pumps etc.)

Assume the following:
- HVAC energy use our largest energy use, AND
- HVAC energy use is greater than 40% of total energy use.

With those two assumptions, we are monitoring 40% of total energy on a separate meter, and we are monitoring greater than 80% of our largest energy use on a separate meter... so would this then qualify for 1 point?

Thank you in advance for any advice!

Hi Helen

I don't think that the schema you laid out would fly. As a general rule, I try to submit only when heating, cooling and ventilation are separately metered, at a minimum. There may be some instances where this rule wouldn't apply, like where there is a large piece of equipment that would justify being submetered (i.e. a chiller), but generally I stick to the rule.

Hannah

Hi Hannah,

Thank you for your input. I guess I am confused: why exactly won't this achieve the intent of the credit? Is "HVAC" not considered an "end-use" in it of itself? The credit language requires a breakdown for "major mechanical systems," so wouldn't HVAC be considered a major system? I didn't find any CIRs on this topic. Where would I find the definition of an "end-use," as this was not in the reference guide glossary.

Thank you!
Helen

Hi Helen,

My experience has been that HVAC is not considered a system level end-use and rather that heating, cooling, and ventilation are considered to be system level end-uses. This is supported by the example summary of end-uses in Table 1 on page 200 of the reference guide. Another perspective is that the intent of the credit is to identify opportunities for energy savings. That intent seems to have a stronger correlation to metering systems at a finer resolution rather than having several systems grouped together under one meter.