"The factors that has to be kept in mind while selecting an HVAC contractor are the following: • If you already know of a reputable HVAC contractor you can quickly hire them for the job it needs to be done. In case, you are not much familiar you can talk to your friends and family for some advice. You can also google out a few of the reviews in the various online sites so that you get to know of the ones who are offering great services. • A word of caution is to never hire a contractor who gives you quotation over the phone because in case of HVAC products it is not possible to give a quotation over the phone without examining the products. • It is advised that it is always a good idea to get in touch with contractors who are up-to-date with the latest technology because installing the most advanced technology will help consumers to save on their utility bills. • Always keep in mind that a good company or a reputed HVAC contractor should always give people written contracts to avoid any kind of confusion at a later stage. • The HVAC contractor that you choose needs to have an office setup or showroom so that you can visit them as and when required. In fact, having a proper establishment is an indication of the fact that the company has been into business for quite some time and they are intending to be business as well. "