We offer a range of complimentary calculators for HVAC energy savings and  VSD energy savings. Note that VSD means variable speed drive. VFD or a variable frequency drive is also used to describe the same thing.

Please also note that HVAC is another word for air conditioning, aircon or air con.

You may ask: why is HVAC energy consumption important? The reason: in many parts of the world, HVAC / Air Con / AirCon / Air conditioning  uses over 60% of a commercial building’s energy. This is why HVAC efficiency is very important.

In addition, the energy savings calculators presented here, provide valuable insights and benefits to building owners, facility managers and other stakeholders.

By using these HVAC and VSD calculators, stakeholders can make informed decisions about energy efficiency upgrades and improvements. This may potentially lead to significant cost, energy and CO2 savings over time. Additionally, the calculators can identify areas of inefficiency within HVAC systems and suggest ideas for improvements.

Therefore, these HVAC and VSD calculators, may assist with improving energy efficiency, save operational expenditure, support sustainable building practices (by reducing carbon) emissions. All this can be done without compromising building occupant thermal comfort.

Furthermore, these calculators can help optimise HVAC system settings, leading to improved indoor comfort for building occupants. The calculators provide data-driven recommendations, enabling stakeholders to make informed decisions regarding energy efficiency upgrades. Overall, the use of our complementary HVAC calculators can help building stakeholders make informed decisions related to energy efficiency, resulting in cost savings, increased energy efficiency, improved comfort, and a more sustainable building operation.


The preliminary calculations for energy efficiency provided on this website are intended to serve as a guide only. They are not to be considered as a decision tool for making capital investments or for detailed design purposes.

While we make every effort to ensure the accuracy and reliability of the information presented, we cannot guarantee the completeness or applicability of the results obtained from these preliminary calculations.

It is important to note that actual energy efficiency and savings may vary based on factors such as equipment selection, building design, operating conditions, and other variables not accounted for in these preliminary calculations.

Therefore, we strongly advise that any decision to invest in energy efficiency improvements should be based on a thorough analysis conducted by a qualified professional.  We would be happy to help you in this aspect if you require.

We disclaim any liability for any damages or losses arising from the use or reliance on the results of these preliminary calculations.

Buttons for Energy Efficiency Calculators

Building Tuning Calculators