Whole Building Design Guide

The decision is which high efficiency HVAC equipment and controls deserve your capital to lower operating costs and keep your climate control reliable.

HVAC is the largest single energy end use in a commercial building, roughly 39%, according to the whole building design guide.

That measures energy, not your bill, though.

HVAC's share of your bill depends on your electric and gas rates because...

A BTU of gas heat often costs less than the electricity running your chillers, fans, and pumps.

The whole building design guide estimates integrated whole building efficiency design can typically cut annual energy costs about 30% with a three to five year simple payback.

Payback on a single replacement depends on your load profile, utility rates, and whether you replace at end of life or early.

Part load is any time your equipment runs below its maximum output.