Purchase a new gas furnace limit switch from a home improvement department store, such as Lowe's or Home Depot, or order a new gas furnace limit switch through a certified furnace dealer. You can also purchase a gas furnace limit switch from online companies that sell furnace parts.
If you are seeking a gas furnace limit switch, contact the manufacturer of the furnace to order parts. It may be necessary to contact the manufacturer via phone or order a gas furnace limit switch from the manufacturer's website. Parts and accessories for gas furnaces are also available on eBay.com or Amazon.com in new or used condition.
