Rheem classic R801S series - Model Number Identification System; Decoding the Model Number

R 80 1 S A 075 4 17 M S A
Rheem 80 =
80% AFUE
1 = Single Stage S = PSC
Standard
Design Series
A = 1st Design
Input
BTU/HR [kW]
050 = 50,000 [15]
075 = 75,000 [22]
100 = 100,000 [29]
125 = 125,000 [37]
150 = 150,000 [44]
3 = Up to
3 Ton
4 = Up to
4 Ton
5 = Up to
5 Ton
Cabinet
Width
14 = 14".0
17 = 17.5"
21 = 21".0
24 = 24.5"
M = Multi X = Low NOx
S = Standard
Revision-
Marketing
(A – First Time
Release)
Air
Model Number Identification
R801S (UF/HZ) Series
5
Model Number Identification
[ ] Designates Metric Conversions