Most Atwood/Dometic Furnace have access via an external removable panel
Suburban.....some you have to remove furnace from casing to access components
Otherwise...they have same parts, same firing sequences, same - same
If both models have exterior access then its a toss up
**Both have had 'issues'
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31