Sigma Air conditioning is an air conditioning, heating, installation, repair, and maintenance company serving the greater New York City area.There are several things you need to keep in mind before you hire any air conditioning service.You need to work with companies you can trust and ones that have years of experience behind them.  Our team of experts is here to work with you to meet all your air conditioning needs. We provide air conditioning service, sales, and will install your new air conditioning if you require it.