Short-cycling is a constant problem for residential or commercial HVAC systems, especially in areas with high humidity. This could result in unnecessary and premature wearing down of the system, inefficient energy consumption and poor humidity and indoor air quality control.
Using a properly sized system for your structure is one way to avoid any short-cycling issues, among many others. However, for owners with existing HVAC systems that are already sized incorrectly, there are ways to manage this issue without affecting productivity and efficiency too greatly.
Issues With HVAC Oversizing
Akin to the frequent starting and stopping of cars in heavy traffic, commercial HVAC systems that cycle frequently between on and off states can wear out too quickly. An improperly-sized heating or cooling unit will turn on or off often in order to constantly address the design load of its building.
Most contractors will also recommend a much higher HVAC capacity in anticipation of peak loads, but this is often a mistake. According to the Air Conditioning Contractor’s Association of America (ACCA), up to 40% of contractors installed oversized systems “to reduce callbacks,” “to allow for future expansion,” or because “customers demanded it.”
Solutions for Owners
To address commercial HVAC systems not being the right size, owners must communicate clearly with their contractors about the needs of their buildings. Don’t fall for explanations that revolve mainly around “experience” when it comes to calculating heating and cooling loads. Ask your contractor about their process in determining loads and whether or not they follow ACCA standards.
For existing systems, the best solution is to maintain efficiency. Ensure that all filters are regularly cleaned or replaced to keep condenser coils free of any contamination. Cleaner coils perform with much higher efficiency than ones with even a thin layer of dirt.
Additionally, regular maintenance keeps commercial HVAC systems running efficiently, improves indoor air quality and boosts productivity in the workplace.
Get the Right Size, the First Time
Our professionals at M & M follow all ACCA manual standards to ensure that your HVAC system is always at peak efficiency. Call us at (209) 952-6580 or use our online contact form to schedule an appointment for your business today!
