I'm getting ready to rough-in a new home. I'm trying to save some money on AFCI
receptacles vs circuit breakers. I'm planning to run a couple of 1" conduits to a bank of AFCI receptacles near both panels.My question is about dedicated circuits
Such as kitchen GFCI, dw/gd, tc, washer/dryer. Are we AFCI protecting GFCI circuits, or can we use these instead? And what about the smoke detector/carbon
monoxide circuit? AFCI protected and on it's own circuit ?

Where are you located?
Do you know what code cycle you are under?

Under the 2014 edition of code just about every receptacle will need AFCI protection.

An AFCI Combination breaker will take care of the entire branch circuit. An AFCI receptacle will only protect from that receptacle downstream. This leaves the section of wiring from the panelboard to the first AFCI receptacle unprotected.

A Dual Function breaker, AFCI/GFCI is also made.

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Under the 2014 edition of code just about every receptacle will need AFCI protection.

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I'm not sure how this applies to an installation being done now...

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An AFCI Combination breaker will take care of the entire branch circuit. An AFCI receptacle will only protect from that receptacle downstream. This leaves the section of wiring from the panelboard to the first AFCI receptacle unprotected.

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If the section of wiring between the panel and an AFCI receptacle is in conduit or MC cable it is perfectly acceptable.
Thing is I have yet to see an AFCI receptacle for sale, outside of the internet that is.
IMO this is way too much work to save a few bucks. Install AFCI breakers and be done with it.