There are several good locales to shop for a heating and cooling unit, sometimes, when a guy needs a current central air conditioner, or may a part chop on their boiler, they don’t know where to look for the current part for the current central air conditioner.
I have put together a list of some bizarre locales you can look, but first, there is the online Heating and A/C market, and online Heating and A/C stores sell all kinds of parts for your Heating and A/C, and smart temperature controls and air filters. I would not request purchasing an actual Heating and A/C uit online like a boiler, window air conditioner, or central air conditioner, because shipping will cost you a lot of currency, and there is a risk that the Heating and A/C unit will be damaged in the shipping process. Another good locale to look would be a local heating and cooling business. Local Heating and A/C dealers usually do a good task of having a variety of good and official Heating and A/C units like central air conditioners and boilers, and a few less official ones like mini split air conditioners. The largest concern with small local heating and cooling dealers is the lack of parts, often they don’t have a immense variety of Heating and A/C arts to choose from. Lastly, I would request finding an Heating and A/C warehome if there is one in your area. Heating and A/C warehouses are usually genuinely immense and contain nearly every heating and cooling unit you can feel of. They will have commercial air conditioners and boilers, central air conditioners, electric, gas and oil boilers, mini split air conditioners, whole home whole-home air purifiers, and so much more.