HVAC Upgrade Planning and Coordination

Building owners don’t update HVAC systems merely to get the most up-to-date technology; rather, they want to address perceived flaws in current systems. That means a thorough examination of the current system should be the starting point. All major device components should be thoroughly surveyed and inspected to determine their age, condition, quality, and anticipated remaining useful life. A review of original building plans, as well as maintenance and repair documents, should be included. For major equipment components or systems, such as piping and duct work, performance testing or non-destructive testing may be needed.If you are looking for more tips, check out visit

It’s important to assess the current method to see if it’s causing discomfort. In the 1950s and 1960s, many HVAC systems were only designed to provide a modest level of cooling. No one expected a system to maintain a constant temperature throughout the year, regardless of the weather.

Historical energy usage should be compared to industry benchmarks of dollars or BTU per square foot for equivalent types of facilities, since high energy costs also justify HVAC upgrades. This comparison will reveal a building’s efficiency as well as potential goal values for change. It may also mean that, despite the fact that an HVAC system is 25 years or older, average maintenance costs are equivalent to those of newer buildings, and that a complete system replacement isn’t necessary due to energy savings. In this scenario, replacing specific components might be the best option.

New centrifugal chillers, for example, are considerably more energy efficient than systems built 20 or more years ago, consuming 30 to 40% less energy than older models. However, depending on the equipment’s hours of service, these savings may not be enough to warrant replacement due to the high capital costs of new equipment.

Another factor to consider when assessing an existing framework is whether it employs outdated technologies. Building automation systems have come a long way in the last ten to fifteen years. Even if devices are in good working order, parts and service personnel familiar with older technology can be difficult to come by. Furthermore, modern systems could have capabilities that older systems do not, but which would increase mechanical system operation and occupant comfort.

Another important thing is adherence to codes and regulations. Buildings constructed between the late 1970s and the mid-1980s were often designed to provide less outside air than allowed by current codes. Replacement of a single HVAC system component does not necessitate adherence to the new codes; however, this may be beneficial to mitigate fears that reduced outside air volumes would result in indoor air quality issues.

To assess the impact of increasing the outside air rate, a thorough HVAC system analysis is needed. Re balancing the air handling systems to provide more outside air is typically not easy. Increased outside air will result in higher heating and cooling loads, which the current heating and cooling plant and associated distribution systems might not be able to handle.

Compliance with current codes would almost certainly be expected if a comprehensive system replacement is to be undertaken. HVAC improvements must be carefully reviewed to assess the full scope of code-required upgrades; this work could greatly increase the project’s cost over budget.