View Full Version : Amana AMH95 (Propane) Gas Furnace
01-23-2007, 09:18 PM
I am having this unit installed in my house tomorrow.
It is replacing a Carrier Weathermaker 8000 that has leaky heat exchange tubes.
Does anyone know if this furnace requires a two-stage thermostat?
Also, currently my furnace only has a 1" filter. If I choose to add a 4"-5" pleated filter, are there any issues I need to be aware when making this chnage to existing ductwork?
Thanks for the help.
01-23-2007, 09:40 PM
Two stage stat is not needed and will not work with this furnace. The unit utilizes an algorithm to determine run time for first stage. The only problem would be height clearance if it is an up flow unit and static pressure. Static pressure will be dependent on your supply and return ductwork.
01-23-2007, 09:45 PM
01-23-2007, 09:46 PM
2 stg stat not required. You may need room in between furnace and return drop for a larger filter. Depends where its located. Infom the installer or Co 1st.;)
01-23-2007, 09:53 PM
What is static pressure?
What do I need to be aware of as it relates to the filter size?
high efficiency air cleaner...definately. your amana dealer should have some good options for you. you wont regret the decision.
oh yeah, these guys are correct about the 2-stage feature.
01-24-2007, 08:07 PM
There are three types of pressure in your ductwork; static presure, velocity pressure, and total pressure. Static pressure is the kind of pressure that keeps a balloon inflated once you blow it up.
The more media your filter has (1" vs 4") the more pressure drop across your filter. If you increase the size of your filter you may need to increase airflow to compensate for it so the heat exchanger can still have the proper amount of air moving across it.
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