Cased Upflow

SUPERIOR COIL SCVL2460 5 TON UPFLOW AC CASED COIL R 410A 150226
SUPERIOR COIL SCVL2460 5 TON UPFLOW AC CASED COIL R 410A 150226
Paypal   US $460.00
TRANE CCBC60A4ACD 5 TON AC HP UPFLOW CASED A COIL R 22 57330
TRANE CCBC60A4ACD 5 TON AC HP UPFLOW CASED A COIL R 22 57330
Paypal   US $345.00
DAYTON FC48D3XN1A 1CJX9 4 TON UPFLOW CASED A COIL R22 153270
DAYTON FC48D3XN1A 1CJX9 4 TON UPFLOW CASED A COIL R22 153270
Paypal   US $313.00
Aire Flo 25 ton Cased coil 410 or R22 ready Upflow
Aire Flo 25 ton Cased coil 410 or R22 ready Upflow
Paypal   US $289.99
Aire Flo 2 ton Cased coil 410 or R22 ready Upflow FREE SHIPPING
Aire Flo 2 ton Cased coil 410 or R22 ready Upflow FREE SHIPPING
Paypal   US $279.99
ICP EBU2X60JA 5 TON UPFLOW HP CASED A COIL R22 66914
ICP EBU2X60JA 5 TON UPFLOW HP CASED A COIL R22 66914
Paypal   US $265.00
ADP HA14660C240B2501AP 5 TON UPFLOW CASED V COIL R 410A 147937
ADP HA14660C240B2501AP 5 TON UPFLOW CASED V COIL R 410A 147937
Paypal   US $246.00
GOODMAN CAPF3636A6 3 TON UPFLOW DOWNFLOW CASED A COIL 50007
GOODMAN CAPF3636A6 3 TON UPFLOW DOWNFLOW CASED A COIL 50007
Paypal   US $221.00

Furnace makes an "explosion" sound while running?

Not all the time. And not at a specific time.

Upflow gas furnace started making a loud boom or explosion following snow storm. Thought snow may have been blocking air intake. Not the case. Intake and exhaust tubes are clear.

Technician came today and was stumped.

Any suggestions?
In the middle of the cycle
9 year old

Comfortmaker

-Maybe the gas valve is going bad. (gas regulator) It might be letting too much gas in at certain times.
-Maybe the furnace isn't purging before or after it cycles (causing gas to become left in the lines).

How old is the furnace??
-See if someone can time the ignition & cycle times & use a gas sensor to see if too much gas is getting into the pilot. (a professional of course)

Good luck!!

Furnace & Air Conditioner Installation - The Stemberk House

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