HVAC
Nothing consumes more energy than your climate control system - roughly 40% of an office building's total consumption. So taking a closer look at how you keep your employees cool (or warm) is a smart place to start when looking to save energy. Here is a basic approach to get started:
1) UPGRADE
Whenever it's time to replace older systems and equipment, always choose the most energy efficient technology available. In most cases, any incremental costs will come back to you in energy savings in a short period of time. Every part of your HVAC system is an opportunity to upgrade - compressors, chillers, furnaces, boilers and a/c units. And there are advanced technologies, like geothermal heat pumps, that can make dramatic changes in your energy costs.
When upgrading HVAC, an important thing to keep in mind is to look at other non-related systems first, and upgrade HVAC last. Why? Because factors like lighting, building envelope, equipment and machinery can all add to heat build up and make cooling systems work even harder. So before undertaking expensive retrofits, investigate ways to reduce other strains on heating and cooling loads. This will also allow engineers to size your HVAC system, minimizing overall costs while ensuring that the entire building operates efficiently.
2) MAINTAIN or TUNE-UP
Often, central HVAC systems are not set for optimal efficiency. On an annual basis, have a qualified engineer inspect the system to see if a tune-up, adjustment or repair may be in order. Companies have saved bundles by simply adjusting control set points and tuning up existing equipment. This also can dramatically lower CO2 emissions, important for companies participating in greenhouse gas emission reduction programs.
3) CONTROLS
To optimize HVAC performance and reap additional savings, you can install a number of controls and management systems of varying degrees of sophistication. Something as simple as a programmable thermostat can ensure your heating or cooling system doesn't work too hard to achieve even temperatures. And doesn't work too hard when no one's in the building. Your HVAC, lighting, security and other systems can all be integrated into an automated control system, as well. Enhanced automation allows you and your staff greater zone control by continuously monitoring and adjusting HVAC equipment based on weather, time of day and occupancy densities in certain areas of your facility. This can also decrease complaints from your employees related to air quality and comfort.
4) BEHAVIOR
Even the most energy-efficient HVAC system can waste energy if it's not used properly. If your employees have control over temperature settings, it's vital that they know how to use the equipment properly. If thermostats are "human-controlled," make sure they're set to the proper temperature at the end of the day. Remind employees to treat their workplace like they treat their home, keeping doors and windows closed, shutting drapes and shades and generally doing their part to reduce strain on heating and cooling systems.
Also, avoid "thermostat battles" among employees by encouraging your staff to wear layers so minor temperature variations don't always result in requests to turn up or turn down the system.