
Are you getting the correct size?
In HVAC terminology, “sizing” is a term that refers to matching the capacity of an A/C or furnace to your home’s exact cooling and heating requirements. The size of a given unit you purchase must be based on a professional load calculation—a survey of the specific thermal characteristics of your house using industry-standard software to determine the correct capacity of an air conditioner or furnace. A load calculation can’t be performed on a website, and rough guesstimates aren’t good enough. Without a professional load calculation, purchasing an over-sized or under-sized unit on a website may leave you locked into higher operating costs and poor cooling/heating performance for as long as the system is installed.
What about installation?
Installing HVAC systems isn’t a job for a do-it-yourselfer nor a neighborhood jack-of-all-trades. Household safety could be compromised by a unit installed improperly—furnaces, for example, utilize an open flame and produce combustion byproducts including deadly carbon monoxide gas. System performance and efficiency are also impacted by a sub-standard installation. Due to possible liability if a unit purchased from an unknown online source is faulty, professional HVAC contractors certified to perform installations usually limit services to systems purchased from a name-brand manufacturer or local supplier.
Is the warranty valid?
Many name-brand HVAC manufacturers state clearly that the warranty is not valid if the unit was purchased online. In other cases, the warranty is valid only if a professional load calculation is performed, and the installed unit is inspected and tested by a qualified local HVAC contractor.
Before buying an HVAC system online, ask the pros at CCAC for more information about possible drawbacks