When an economizer sticks open, a lot more heating and cooling energy is needed to condition the excess air the economizer lets in. Often, that increase is large enough to be discerned by analyzing …

In general, if the replaced unit did not have economizer, economizer will not be required with certain caveats such as high eficiency required for compressorized gear.

Adding an economizer to an HVAC system makes cooling more energy efficient by using resources such as cool air or water in place of operating a compressor. Depending on design conditions, …

The instructions that follow are for the most common economizer controller – the Honeywell W7212 – which probably accounts for over half of all economizers currently in production.

the Economizer savings Estimator provides the estimated energy savings for using various control products for rooftop units. it’s current with the latest AsHrAE energy and buildings standards, and …

Enthalpy changeover disables economizer operation and enables compressor operation when outdoor air exceeds a fixed enthalpy (28 Btu/lb) sometimes called high limit enthalpy control.

The table below provides an estimated annual savings and potential PG&E incentive for installing a condensing economizer on an existing boiler (without economizer).