Cutting Costs Through HVAC Optimization

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The Cost Of HVAC

Did you know that 51% of energy consumption in your building is from HVAC system requirements?

Keeping Your System Up-to-date

Therefore, keeping your HVAC system up-to-date and knowing when to invest in new equipment and maintenance can be one of the most effective ways to cut costs in your building or facility by reducing overall energy consumption.

Also, poor running HVAC systems can even greatly reduce the air quality in your building which can cause health decline to the tenants in the building.

Therefore, this week we are going to uncover some key points on how you can optimize your HVAC system to not only maintain better air quality, among other things but to most importantly reduce energy consumption resulting in cost savings for your building or facility.

The Benefits Of HVAC Optimization

The typical benefits of HVAC optimization include:

  • Reduction of green house gas (GHG);
  • Reduction in energy consumption;
  • Money savings;

However some of the secondary benefits for HVAC optimization you may want to consider are the following:

  • Improving service quality for tenants;
  • Increase building asset value which may enable you to…
  • Increase rent;
  • Get better tenants;
  • Cut costs by enabling current in-house staff to maintain the system;

This is just a short list of the secondary benefits, but you can see how HVAC optimization can provide a good cost payback and other secondary benefits, like the comfort and improved health of tenants in your building or facility.

When Should You Optimize Your HVAC system?

It can sometimes be challenging to decide whether or not your HVAC system needs to be optimized because a poorly running HVAC system may keep the occupants comfortable but cost you more money from energy loss.

Typically, before making a decision to optimize your HVAC system you should consult your facility managers, in-house.

According to the NSW Government Office Of Environment & Heritage they say that:

“An effective HVAC optimisation process relies on an engaged and informed operating and
maintenance (O&M) team, DDC or BMS control of HVAC systems and accessible, accurate HVAC
documentation.”

Outside of in-house staff you may also want to bring in some outside contractors that specialize in HVAC optimization such as:

  • Energy management consultants;
  • Energy efficiency maintenance providers;
  • BMS/controls contractors;
  • HVAC design consultants;
  • HVAC contractors and maintenance providers;

How To Optimize

What’s great about HVAC system optimization is that you generally don’t have to spend a lot of capital to implement because it’s focused around optimizing current systems.

If you have an older facility or building, overcoming the structural flaws that are causing energy loss may be insurmountable, no matter how many renovations that you do.

However, you can still benefit from HVAC system optimization, and in-fact system optimization typically reduces energy consumption more than any other optimization strategy.

Although there are many savings opportunities with HVAC system optimization, for the purposes of this blog I’m going to cover typically where the biggest cost saving opportunities lie within System Supervisory Control Optimization.

Here are the four core optimization opportunities that you should focus on within System Supervisory Control:

  • Optimum start/stop programming;
  • Space temperature set points and control bands;
  • Master air handling unit supply air temperature signal;
  • Staging of chillers and compressors;

For example, optimizing space temperature set points and control bands, typically results in a 20% decrease in energy consumption alone.

To learn more about cost savings and implementation of these optimization opportunities I’ve discussed here regarding HVAC system optimization, reference “I am Your Optimization Guide” from the NSW Government website for more detailed information, which you can view here.

References:

http://www.waibelenergysystems.com/pdf/HVAC%20System%20Optimization%20-%20Sales%20Piece.pdf
http://www.pharmtech.com/optimizing-hvac-systems-improve-energy-efficiency
http://www.environment.nsw.gov.au/resources/business/150317HVACGuide.pdf

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