The role of an HVAC Consultant is critical for HVAC Projects. The economics of HVAC systems include capital costs and operating costs. The operating cost comprises power consumption, AMC maintenance, and repair, recommissioning, replacement if required.
Usually, a life cycle cost of any HVAC equipment can be broken down as :
Lifecycle cost (LCC) = first cost + maintenance and repair + energy + water + replacement – salvage value
HVAC Consultant determines the best HVAC systems depending on the facility and premises where the HVAC system is required. They economically evaluate various options like simple payback, net savings, savings-to-investment ratio (SIR), adjusted internal rate of return (IROR), and discounted payback to check the economical HVAC system.
The economics of HVAC systems can be broken into capital expenditures (CAPEX) and operating expenditures (OPEX).
The HVAC systems that meet the energy code are considered the best option. Simply using R-values without defining the construction materials is not a good HVAC Consultancy practice. The thermal mass, vapor barrier, and envelope leakage will affect the capacity, configuration, and performance of HVAC systems. An HVAC Consultant that does not respond to the individual material characteristics of a building can make the system run badly. This will lead to underperforming causing an impact on energy consumption, premature equipment failure, and occupant discomfort.
A good HVAC Consultant should not use rules of thumb to establish air handling system airflow, chiller plant capacity, and heating plant capacity. Often, the initial HVAC equipment sizes are adjusted to satisfy the engineering calculated heating/cooling peak demand. However, HVAC Consultant must consider any diversity in operating the HVAC systems to represent real occupancy to adjust HVAC equipment and distribution systems’ capacities. At the end of the design development phase, updated equipment selections are made and finalized.
So what does this has to do with the economics of HVAC systems? If HVAC Consultants use the rule on the thumb, the HVAC system capacities end up significantly higher and oversized as they were never adjusted for the refined load calculations and diversity of operation. This causes a huge expense on CAPEX. The impact on OPEX will lead to unsatisfied hours of operation or underperformance of the HVAC system, early equipment failure, inefficient operation (increasing operating expenses), and occupant discomfort.
Hence, any company must choose HVAC Consultant which are professional and are complying with ASHRAE codes and standards to save on CAPEX & OPEX. MG Cooling Solutions are HVAC Consultant who follows ASHRAE codes and standards to deliver energy efficient and cost efficient HVAC Projects.