I have a 6 year old Rheem Classic 90 Plus Horizontal Gas Furnace (Propane).
Pressure switch sticks which causes furnace not to light 1st thing in the morning.

When furnace will not start, I remove tube from fan and blow/suck on the tube. I can hear the pressure switch "click" several times and the fan starts. I then connect the tube back to the fan. Furnace will run fine for a month or two, and then will stick again.

Kind of tired of this little exercise and I want to replace the pressure switch but cannot find a part number nor can I find a serial or model number on the furnace.

Can anyone get me the part number and recommend a source for the part and instructions for Removal and replacement?

Thanks!

Removal and replacement is simple. Unbolt/screw the control and remove tube. The replacement is the reverse of the removal. Need a model number to get the exact part number. By law the model number has to be on the furnace and it is against the law for anyone to remove it. Look inside the furnace burner area and on the inside walls that are exposed for the numbers.

Removal and replacement is simple. Unbolt/screw the control and remove tube. The replacement is the reverse of the removal. Need a model number to get the exact part number. By law the model number has to be on the furnace and it is against the law for anyone to remove it. Look inside the furnace burner area and on the inside walls that are exposed for the numbers.

Thanks for your help!

Model # is RGTA07FYBGS

Where can I purchase a new pressure switch and how much should it cost?

All Thermal Controls Company: Rheem Ruud 42-24196-81 Pressure Switch (http://www.allthermalcontrols.com/product4693.html)

Here is a complete parts list for your furnace

http://www.rheempartslists.net/92-42800-RGTA.pdf

You can also call the company below with your model number and get the parts from them

Patriot Supply - (http://www.patriot-supply.com/)

Price can vary just make sure the switch you get is the correct one for your furnace.

All Thermal Controls Company: Rheem Ruud 42-24196-81 Pressure Switch (http://www.allthermalcontrols.com/product4693.html)

Here is a complete parts list for your furnace

http://www.rheempartslists.net/92-42800-RGTA.pdf

You can also call the company below with your model number and get the parts from them

Patriot Supply - (http://www.patriot-supply.com/)

Price can vary just make sure the switch you get is the correct one for your furnace.

Thank you so much for your help, great information and links!

Your welcome.