7NOX Blog

How to Improve Efficiency in Your HVAC System

HVAC technician examining air con units

Written by 7NOX Team

February 24, 2023

Heating, ventilation, and air conditioning (HVAC) systems are a critical component of any building’s infrastructure. They are responsible for maintaining indoor air quality and ensuring a comfortable environment for building occupants. However, HVAC systems can also be a significant source of energy consumption and cost for building owners and managers. Therefore, it is essential for FMs to improve the efficiency of their HVAC systems to reduce energy costs and improve the overall building performance. Here are some ways you can improve the efficiency of your building’s HVAC system.

Conduct Regular Maintenance

Regular maintenance is essential to keeping HVAC systems functioning at their best. Facilities managers should schedule regular inspections, cleanings, and repairs to ensure that HVAC systems are running efficiently. Neglected HVAC systems can lead to dirty filters, clogged coils, and leaky ducts, which can reduce performance and increase energy consumption. Regular maintenance can help prevent these issues, extend the lifespan of the system, and save energy and money in the long run.

rooftop air handling unit

Use High-Efficiency HVAC Equipment

Upgrading to high-efficiency HVAC equipment can significantly improve the efficiency of the system. Facilities managers should consider using equipment that meets or exceeds industry standards, such as those certified by ENERGY STAR. High-efficiency HVAC equipment uses less energy than traditional equipment, which can lead to significant energy savings over time. Moreover, high-efficiency equipment is often designed to operate at part-load conditions, which can result in additional energy savings during periods of low demand.

Install Programmable Thermostats

Programmable thermostats are a valuable tool for improving HVAC system efficiency. They allow facilities managers to set temperature schedules that align with the building’s occupancy schedule. For example, the thermostat can be set to lower the temperature during non-business hours or weekends when the building is unoccupied and raise it before employees arrive. This simple step can reduce energy consumption and lower energy costs significantly. Also, consider automating your after-hours HVAC program or going HVAC on-demand for the weekends. These programs cut energy waste while giving your tenants more flexible work hours.

Optimize Airflow

Optimizing airflow is another essential factor in improving HVAC system efficiency. Facilities managers should ensure that HVAC systems are designed to deliver the right amount of air to each area of the building. The air ducts should be sized correctly to match the load requirements of the building, and they should be sealed to prevent air leakage. Additionally, filters should be checked regularly and replaced as necessary to ensure that the system is not overworking to compensate for restricted airflow.

Consider Renewable Energy

Facilities managers should also consider integrating renewable energy sources into their HVAC systems. Renewable energy sources such as solar and geothermal can provide an energy efficient and sustainable source of energy for HVAC systems. Solar panels can generate electricity to power the HVAC system, while geothermal systems can use the ground’s stable temperature to heat or cool the building. Although these options may require significant upfront investment, they can provide long-term cost savings and reduce the building’s carbon footprint.

Improve Building Envelope

Improving the building envelope is another way that facilities managers can improve HVAC system efficiency. The building envelope includes the walls, roof, windows, and doors that separate the indoor and outdoor environments. Improving insulation, weather stripping, and window and door seals can reduce heat transfer and prevent air leaks, resulting in less heating and cooling energy needed. The HVAC system will have less load to handle and thus function more efficiently.

In conclusion, improving the efficiency of HVAC systems can significantly reduce energy consumption and lower costs for building owners and managers. Facilities managers can achieve this by conducting regular maintenance, using high-efficiency equipment, installing programmable thermostats, optimizing airflow, considering renewable energy, and improving the building envelope. With these steps in place, facilities managers can ensure that their HVAC systems are functioning optimally, providing comfortable environments for building occupants while saving energy and money in the long run.