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How do i determine if i have a one stage or multi stage

Customer Question
How do i determine...

How do i determine if i have a one stage or multi stage furnace?

Contractor's Assistant: Did you check the furnace's filters?

I wouldn`t know what to look for.

Contractor's Assistant: Do you plan on doing the work yourself?

Replace the thermostat

Contractor's Assistant: Anything else we should know to help you best?

Is the thermostat one or two stage. how do i determine?

Submitted: 11 months ago.Category: HVAC
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Answered in 4 minutes by:
9/16/2017
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 11 months ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 23,151
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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hello,

My name is Billy.

Do you have a model number of the furnace?

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Customer reply replied 11 months ago
no
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 11 months ago

what wires were on what terminals in old thermostat

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Customer reply replied 11 months ago
all i have is the thermostat number, white-rodgers, 1F90=51
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 11 months ago

That is a single stage furnace

Billy

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Customer reply replied 11 months ago
all i have is the thermostat, white-rodgers, 1F90-51
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 11 months ago

Yes...that is a single stage heat and single stage cool.

Did you need specific information?

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Customer reply replied 11 months ago
many thanks.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 11 months ago

You are very welcome...just rate service ( 5 star system) to move off the active list.

Billy

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