Suburban Furnace Model SF25 Tune-Up Kit comes in two variations. The first (Kit #1) has the old style burner access gasket which makes kit #1 applicable to the SF-25 between serial numbers 934701426 and 094101431, the second (Kit #2) has the new style burner access gasket which is applicable to the SF-25 above serial number 094101431. Please verify which kit is applicable to your furnace prior to ordering. For parts outside of these serial numbers please reference the exploded parts view item links below the tune-up kits.
*See serial number note at the bottom of the page*
Tune-Up Kit #1 Contents: (To order just an individual part, click onto the item# / description below)
Tune-Up Kit #2 Contents: (To order just an individual part, click onto the item# / description below)
(Click the Down Arrow to View More)
SUBURBAN FURNACE SF-25 EXPLODED PARTS VIEW LINKS
Item# 11 Orifice 180913 Below S/N 021206467 (NPT Threads)
Item# 11 Orifice 180306 Above S/N 021206467 (Metric Threads)
Item# 45 Sail Switch 232261 Above S/N 924201894 (New P# 233382)
*Not Shown* Wiring Kit 520832 (to convert to the new 3 try ignition board)
Item# 59 Limit Switch 232504 Above S/N 921403896 (New P# 233532)
*Please Note* All Suburban Serial Numbers manufactured after January 1990, will be nine digits. The first two (2) digits signify the year of manufacture. The next set of digits, indicate the week of the year and the remaining digits are serial numbers.