There are several local stores that sell gas fireplace accessories. They are available at Lowe's, Home Depot, Menards, and HQ. There are also "mom and pop" stores such as Majestic Products that are located in many places throughout the United States.
Hardware stores, Ebay, and Heating and Air Conditioning stores all carry Reznor line of heaters. Researching the sites that sell the Reznor line of heaters is quite easy and the use of a shopping and comparison site should help you in your search.
One can purchase strip heaters from a variety of stores. Stores such as ZORO Tools, Sears, Amazon, Omega Engineering, and Hatco Corporation sell strip heaters.
Several household appliance stores also sell propane heaters. You can also purchase propane heaters online.
Most of the big box stores like lowes and menards sell cheap fireplace vents on their websites. You can also go to fireplace-vent.fireplacecheap.us
Organizations such as Amazon and ebay sell fireplace designs which have bright eye catching colors. They can be bought online and at a very reasonable price.
Portable electric heaters are very easy to find at both retail locations and online stores. Three stores where it is possible to find this product are Wal-Mart, Target, and Home Depot.
There are two types of gas fireplace logs: vented and unvented. Both types can be found at fireplace and chimney stores, and at some hardware stores. Many gas log manufacturers offer gas fireplace logs for sale online.
Ace hearth and home centers, but barring them, the a local fireplace shop should be able to sell you any replacement materials
When my expensive stuff breaks, I go to Amazon.com or eBay.com. But there are plenty of stores that are not online that will have tankless water heaters. I suggest going to your local hardware or furniture store.
Wal-Mart has just about everything, they do sell thermostats in most of their stores. You can find a variety of thermostats including cooking thermostats.
Fireplace surrounds can be purchased at Home Depot, Lowes, and other stores that specialize in home and garden building and repair. If you're unable to find any local sellers, there are also online stores that sell surrounds.