Looking for a power vent blower for my goodman gas furnace 4inch opening city inspector asking for a power vent blower the 4 inch b~vent double pipping is going to come out a bassment window

SOURCE: goodman gas furnace power vent motor and housing replacement

You need to type GOODMAN GAS APPLIANCES into you browser to find you local servicecenter. I must tell you that Goodman only sells to authorized service companies in my experience. So you become EgKraft Company.

SOURCE: 1993 goodman status light 4 times blinking

I have a goodman GMP075-3 that won't turn on. I think it is the pressure switch since I do not have a vent blockage. What is a venter and where can I find it??

SOURCE: Goodman furnace GMPN080-4 Getting 4 RED blinks/Open Limit Swtch

You have a limit switch located in the furnace (a little bigger than a dime and located near the center of the front panel, sometimes the switch is mounted to a small fiberglass board) . There will be two wires going to it. They sometimes trip so often that they fail to automatically reset(due to dirty filters or undersized ductwork). You can SHUT OFF POWER TO THE FURNACE, then remove the two screws holding the switch in the furnace, pull the switch out of the furnace and tap on it and wipe it off.
The switch may work a few more times but should be replaced with the same size and type. You will see some rating printed on the switch somewhere. Write down all the numbers and get a replacemet from a furnace/AC supply house. If you have a meter and know how to use it you could check the switch for continuity.

Sometimes just a tap on the switch will get it going. There will also be a couple of rollout switches that could be tripped. They have little buttons on them to reset them. If they trip it may have other issues to be solved.
Hope this helps!
Matt

SOURCE: I'm considering installing a Goodman LP Gas Furnace:sizing? Ops?

Consider a variable output system like a Carrier 58MXA or an American Standard AUX unit. This way the unit will ramp up or down based upon the heat required. These units have two or three Btu outputs so they will modulate to find the right range. Yes they will cost more than the Goodman units but will save you gas dollars for many years to come. Goodman is a good Builders unit but look to fuel economy as prices of fuel increases. Right now your furnace is is using 60 Btu's per square foot. Are you located in Alaska? Here in Vermont if we figure 30 Btu's per square foot, that is one very drafty home. Ask to see their Manual J heat loss. If they say "What" time to move on to another heating contractor.

SOURCE: Have a Goodman GMT070-3B which the vent motor

The whole assembly must be replaced.

The sequence of operation is -

Combustion fan purges the heat exchanger. A pressure switch verifies combustion air fan is running. Usually a 30-45 second purge before the hot surface ignitor glows, or the spark ignition starts.

Gas valve opens after 10-15 seconds and main burners light. Control board monitors for flame and shuts gas valve after 2-3 seconds if main burner does not light.

If burner does not light, some boards repeat this for 3 tries, then locks out and is reset by cycling power.

Air blower comes on after another 30-45 seconds after main burner ignition.

Times may vary based on the specific controller board. A flow chart and timing sequence should be located somewhere on the unit, usually in the fan compartment.