A furnace should last 35 years, many companies offer a ten-year warranty.
You should not run gas from the furnace to any appliances.
Probably not, but if the furnace or a part of it was submerged you should have it checked out.
The pilot flame is/should be about 1.5" long, the diameter of a pencil. When the burners are going, the gas is shot into the burner manifold, and the gas sent to the burner is designed to go to the back of the heat exchanger. So, in a typical 80,000 input heater, about 14"-18" long.
an electric furnace runs off of 208/230 Volts while a typical gas furnace runs off of 120 also a gas furnace will have a valve for the gas relay where the gas enters the furnace.
It should have come with the furnace and if not try Google or RHEEM.com
It depends on the furnace, they come in different sizes. There should be a data plate on or in the furnace which lists the input and output rating.
The cost comparison between an electric furnace and a gas furnace typically shows that gas furnaces are more cost-effective in the long run due to lower operating costs. Gas furnaces have lower monthly utility bills compared to electric furnaces, which can result in significant savings over time. However, the initial cost of purchasing and installing a gas furnace is usually higher than that of an electric furnace.
No, you should replace the valve.
You can find a schematic for a gas furnace on the website, Uncionradio.
When purchasing a gas wall furnace you should look for a variety of different features. These include a insulated blower compartment to reduce noise, heat exchangers that resist corrosion and ensuring the gas wall furnace won't lose heat and is energy efficient to save you money.
There are many places to find gas furnace prices. One can look on sites like Furnace Price Guides, Century Gas Furnace, and Consumer Reports. One can also find gas furnace prices by going to a local heating supply store.
A 3250 watt generator has the capacity of I = W/E, 3250/120 = 27 amps. This should be in the range to operate any gas furnace.