LEARN
The numbers behind your HVAC bill.
What your equipment costs to run, where the waste hides, and how the bill is actually computed. Every figure here is a government number, a peer-reviewed study, or math shown in full. No case studies we can't back, no averages stretched past their scope.
COSTS
What HVAC really costs a NYC building per year
The $286 per ton per year derivation, shown step by step, scaled from one 5-ton unit to a 50-ton building, with the waste rows and the 15-year cumulative.
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BILLING
Demand charges, explained for building owners
A real NYC commercial Con Ed bill where demand charges were 70% of the total. What sets the charge, why degraded equipment pays it twice, and what one kilowatt of peak costs per year.
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MAINTENANCE
What a dirty filter actually costs you
The U.S. Department of Energy puts a clogged filter at 5 to 15% of an air conditioner's energy. Here is that figure in dollars, and why nobody notices until the compressor does.
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METHODOLOGY
How we make claims
Every number on this site is a government figure, a peer-reviewed study, or math you can check. This page is the rulebook, including the famous statistic we refuse to quote.
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See what your own equipment costs to run.
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