Carrier · model number decoder

Carrier WeatherMaker 48TC

Carrier's standard-efficiency WeatherMaker gas/electric rooftop, 3 to 15 tons. The 18-character model tells you heat size, cooling staging, tonnage, controls, economizer and voltage.

Gas heat / electric cooling packaged rooftop · 3–15 tons · R-410A

Model numbers starting 48TC.

Quick answers

Tonnage from the model number

48TCDD08A1A5-0A0G0 is a 7.5-ton unit: characters 7–8, 08, are the nominal size.

04 = 3 tons 05 = 4 tons 06 = 5 tons 07 = 6 tons 08 = 7.5 tons 09 = 8.5 tons 12 = 10 tons 14 = 12.5 tons 16 = 15 tons

Source: 48TC-19PD, page 4; 48TC-7-16-03PD, page 3.

Factory filters by tonnage

3–5 tons	(2) 16 x 25 x 2 in.
6 tons	(4) 16 x 16 x 2 in.
7.5 tons	(4) 16 x 20 x 2 in.
8.5–12.5 tons	(4) 20 x 20 x 2 in.
15 tons	(6) 18 x 24 x 2 in.

Source: 48TC-19PD, page 13; 48TC-7-16-03PD, pages 7, 8, 9. Check the rack before ordering; filters get changed over the years.

Age from the serial number

The first four digits are the week and year it was built, on Carrier’s fiscal calendar. 3112U12345 was built in week 31 of 2012. How to read it

Source: 48TC-19PD, page 72.

Sizes and filter sizes

Size code	Nominal tons	Return-air filters
04	3	(2) 16 x 25 x 2 in.
05	4	(2) 16 x 25 x 2 in.
06	5	(2) 16 x 25 x 2 in.
07	6	(4) 16 x 16 x 2 in.
08	7.5	(4) 16 x 20 x 2 in.
09	8.5	(4) 20 x 20 x 2 in.
12	10	(4) 20 x 20 x 2 in.
14	12.5	(4) 20 x 20 x 2 in.
16	15	(6) 18 x 24 x 2 in.

Source: 48TC-19PD, pages 4, 13; 48TC-7-16-03PD, pages 3, 7, 8, 9. Factory filter sizes. Check the rack before ordering; filters get changed over the years.

Carrier WeatherMaker 48TC model number nomenclature

Example: 48TCDD08A1A5-0A0G0. Select a position to jump to its codes.

481–2 TC3–4 D5 D6 087–8 A9 110 A11 512-014 A15 016 G17 018

Position 13 is always “-” (design revision). The decoder works with or without it.

Position 1–2 Unit heat type

48	Gas heat packaged rooftop

48TC-7-16-03PD, page 3

Position 3–4 Model series

TC	WeatherMaker, standard efficiency

48TC-7-16-03PD, page 3

Position 5 Heat option

D	Low heat
E	Medium heat
F	High heat
S	Low heat, stainless steel heat exchanger
R	Medium heat, stainless steel heat exchanger
T	High heat, stainless steel heat exchanger
L	Low NOx, low heat (sizes 04–06)
M	Low NOx, medium heat (sizes 04–06)
N	Low NOx, high heat (sizes 04–06)

48TC-7-16-03PD, page 3; 48TC-19PD, page 4

Position 6 Refrigeration system

A	One-stage cooling
B	One-stage cooling with Humidi-MiZer (sizes 04–07)
D	Two-stage cooling (sizes 08–16)
E	Two-stage cooling with Al/Cu condenser coils and Humidi-MiZer (sizes 08–16)
M	Single circuit, two-stage cooling (sizes 08, 09 and 12 only)

48TC-19PD, page 4; 48TC-7-16-03PD, page 3

Position 7–8 Nominal cooling size

04	3 tons
05	4 tons
06	5 tons
07	6 tons
08	7.5 tons
09	8.5 tons
12	10 tons
14	12.5 tons
16	15 tons

48TC-19PD, page 4; 48TC-7-16-03PD, page 3

Position 9 Sensor options

A	None
B	Return-air smoke detector
C	Supply-air smoke detector
D	Return- and supply-air smoke detectors
E	CO₂ sensor
F	Return-air smoke detector and CO₂
G	Supply-air smoke detector and CO₂
H	Return- and supply-air smoke detectors and CO₂
J	Condensate overflow switch (electromechanical controls only)
K	Condensate overflow switch and return-air smoke detector
L	Condensate overflow switch and return- and supply-air smoke detectors

48TC-7-16-03PD, page 3

Position 10 Indoor fan

1	Belt drive, standard static
2	Belt drive, medium static
3	Belt drive, high static (not on 48TC*M08)
C	High static with high-efficiency motor (size 16 only)

48TC-7-16-03PD, page 3

Position 11 Coil options (outdoor – indoor – hail guard)

A	RTPF Al/Cu – Al/Cu
B	RTPF precoat Al/Cu – Al/Cu
C	RTPF e-coat Al/Cu – Al/Cu
D	RTPF e-coat Al/Cu – e-coat Al/Cu
E	RTPF Cu/Cu – Al/Cu
F	RTPF Cu/Cu – Cu/Cu
M	RTPF Al/Cu – Al/Cu, louvered hail guard
N	RTPF precoat Al/Cu – Al/Cu, louvered hail guard
P	RTPF e-coat Al/Cu – Al/Cu, louvered hail guard
Q	RTPF e-coat Al/Cu – e-coat Al/Cu, louvered hail guard
R	RTPF Cu/Cu – Al/Cu, louvered hail guard
S	RTPF Cu/Cu – Cu/Cu, louvered hail guard
G	Novation Al/Al – Al/Cu
H	Novation Al/Al – Cu/Cu
J	Novation Al/Al – e-coat Al/Cu
K	Novation e-coat Al/Al – Al/Cu
L	Novation e-coat Al/Al – e-coat Al/Cu
T	Novation Al/Al – Al/Cu, louvered hail guard
U	Novation Al/Al – Cu/Cu, louvered hail guard
V	Novation Al/Al – e-coat Al/Cu, louvered hail guard
W	Novation e-coat Al/Al – Al/Cu, louvered hail guard
X	Novation e-coat Al/Al – e-coat Al/Cu, louvered hail guard

48TC-7-16-03PD, page 3

Position 12 Voltage

1	575-3-60
3	208/230-1-60, single phase (sizes 04–06)
5	208/230-3-60
6	460-3-60

48TC-7-16-03PD, page 3; 48TC-19PD, page 4

Position 14 Base unit controls

0	Electromechanical controls (W7212 EconoMi$er IV compatible)
1	PremierLink controller
2	RTU Open multi-protocol controller
6	Electromechanical with 2-speed fan and W7220 economizer controller

48TC-7-16-03PD, page 3

Position 15 Intake / exhaust

A	None
B	Temperature economizer with barometric relief
F	Enthalpy economizer with barometric relief
K	2-position damper
U	Temperature ultra-low-leak economizer with barometric relief
W	Enthalpy ultra-low-leak economizer with barometric relief

48TC-7-16-03PD, page 3

Position 16 Service options

0	None
1	Unpowered convenience outlet
2	Powered convenience outlet
3	Hinged panels
4	Hinged panels and unpowered convenience outlet
5	Hinged panels and powered convenience outlet

48TC-7-16-03PD, page 3

Position 17 Electrical options

A	None (non-USA models)
C	Non-fused disconnect (non-USA models)
D	Thru-the-base connections (non-USA models)
F	Non-fused disconnect and thru-the-base connections (non-USA models)
G	2-speed indoor fan (VFD) controller
J	2-speed fan controller (VFD) and non-fused disconnect
K	2-speed fan controller (VFD) and thru-the-base connections
M	2-speed fan controller (VFD), non-fused disconnect and thru-the-base connections

48TC-7-16-03PD, page 3

Position 18 Packaging and seismic

0	Standard
1	LTL
3	California seismic compliant label (2012 document)
4	LTL and California seismic compliant label (2012 document)

48TC-7-16-03PD, page 3; 48TC-19PD, page 4

How old is this unit? Reading a Carrier serial number

Ten characters. Positions 1–2 are the week of manufacture on Carrier's fiscal calendar, 3–4 the year, 5 a manufacturing-location letter and 6–10 a sequence number. Carrier's example 3112U12345 was built in week 31 of 2012.

Example: 3112U12345

Positions 1–2: Week of manufacture (fiscal calendar)
Positions 3–4: Year of manufacture (12 = 2012)
Position 5: Manufacturing location
Positions 6–10: Sequence number

Source: 48TC-19PD, page 72. This is the manufacture date, not the install date.

Serial number dates for every rooftop brand we cover →

Notes and limits

Filter sizes are the factory return-air filters from the physical data tables. Confirm against the rack in the unit; a previous contractor may have changed the filter arrangement.
Sizes 04–06 (3–5 tons), the low-NOx heat codes, single-phase voltage code 3 and seismic packaging codes 3 and 4 come from Carrier's 2012 3–15 ton product data. Later 04–06 builds may differ.
Size 09 filters changed between documents: the 2012 data lists (4) 16 x 20 x 2 in., the 2020 data (4) 20 x 20 x 2 in. Check the rack.
Cooling code A: the 2020 6–15 ton data offers A and B on size 07 only. Older 08, 09 and 12 units can also be A (one stage).
The serial format is taken from Carrier's 2012 product data. The week is Carrier's fiscal-calendar week, so the date is approximate.

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BoltWright put this page together from the manufacturer’s published documents, and we aren’t affiliated with Carrier. Check the unit’s nameplate and the current Carrier literature before you order parts.

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