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Frequently Asked Questions

Where is the Reznor distributor closest to me?
What are cut off times for Reznor next day air orders?
How do I determine if my Reznor Unit has Stainless Steel Heat Exchanger?
How do I handle my Reznor warranties?
I have an old Reznor Heater from the 1940's, 1950's, 1960's, 1970's, 1980's, or 1990's in my home / business. Are replacement units or parts available?
How can I get a wiring diagram for specific piece of Reznor equipment?
I have an old Reznor Heater. How can I determine exactly how old it is?
What size heater do I need for a space/room that measures (x ft. wide by y ft. deep)?

Where is the Reznor distributor closest to me?

You can find your nearest Reznor distributor by calling customer service at (770)582-0067.

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What are cut off times for Reznor next day air orders?

Next Day Air orders received at Southern Air Concepts, Inc. by 11:00 am are usually shipped the same day. Reznor's official policy is to ship super-stock parts within 24 hrs. In your parts price sheet next to the part number is a “ss” this means super stock. These items are to be shipped within a 24 hr period. If the part is not marked “ss” then you may request NDA subject to a $40 expedite charge plus NDA charges. In some cases the part may require fabrication or other sourcing and they will not guarantee shipment within 24 hrs.

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How do I determine if my Reznor Unit has Stainless Steel Heat Exchanger?

If your Serial number starts with an S or an E, that would determine that you have either 321 SS Ht. Exchanger or 409 SS Ht. Exchanger. Heat Exchangers fabricated from 409 SS are magnetic.

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How do I handle my Reznor warranties?

You can complete most all warranty issues at the Warranty Request page on www.rezspec.com. When the web is not an option you must fill out a Reznor Warranty Tag and return it to the address listed on the bottom of the tag. Reznor does not require return of the bad part unless it is specifically requested from the factory. The online system will give you instructions on the disposition of warranty parts. Compressors must be bolted or banded to a skid in an upright position so we may prevent any oil spillage. Compressors must also be sealed. You may seal compressors by reinstalling the rubber plugs that are shipped with replacement compressor or by crimping both liquid and suction lines closed and brazing them shut. Items must be returned prepaid and allowed.

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I have an old Reznor Heater from the 1940's, 1950's, 1960's, 1970's, 1980's, or 1990's in my home / business. Are replacement units or parts available?

Reznor has been making heating equipment since 1888.

Many of the heaters from the 1940's and 1950's are still working. Some replacement parts are available on certain units.

See our list of discontinued Model Numbers (mfg'd 1940's through 2002) and replacements where available below: See our list of discontinued Model Numbers (mfg'd 1940's through 2002) and replacements where available below:

MODEL TYPE LAST MFD. (YEAR) PARTS AVAILABLE CURRENT MODEL

ABB

Air Turnover Unit

1999

Limited

ACB

AEUH

Electric Unit Heater

2000

Limited

EGE , EGH

AFA

Room Heater

1945

None

None

ARB

Air Turnover Unit

1998

Limited

ACB

BE

Unit Heater

2002

Yes

UDBP

CEEXL

Unit Heater

1988

Yes

UDAP

CEEXLB

Unit Heater

1988

Yes

UDBP

CPAK

Packaged Heating/Makeup Air

1997

Yes

PGBL

CREB

Packaged Heating/Makeup Air

1990

Yes

RGB

CRP

Duct Furnace

1996

Yes

RP

CRPAK

Packaged Heating/Makeup Air

1990

Yes

RGBL

CRPBE

Packaged Heating/Makeup Air

1990

Yes

RPB

CRPV

Duct Furnace

1996

Yes

RP

CRPVAK

Packaged Heating/Makeup Air

1990

Yes

RPBL

CRPVE

Packaged Heating/Makeup Air

1990

Yes

RPB *

CRXE

Packaged Heating/Makeup Air

1990

Yes

RGB *

CX

Duct Furnace

1996

Yes

X

CXE

Packaged Heating/Makeup Air

1996

Yes

XE

CXL

Unit Heater

1988

Yes

F

CXLB

Unit Heater

1988

Yes

B

D

Duct Furnace

1956

None

X , EEDU

DBF

Residential Furnace

1956

None

None

DFA

Direct Fired Heater

1999

Limited

DFB

DFAH

Hi-Bay Unit

1975

Limited

None

DFT

Duct Furnace

1977

See Note

See Note

DPAK

Packaged Heating/Makeup Air

1997

Yes

PGBL

DS-LDS

Duct Furnace

1964

None

X ,EEDU

DU

Duct Furnace

1952

None

X ,EEDU

EE

Elec Furnace

1980

Limited

None

EEXL

Unit Heater

1988

Yes

UDAP

EEXLB

Unit Heater

1988

Yes

UDBP

EJ

Electric Makeup Air

1980

Limited

None

ERBC

Electric Furnace/ Evaporative Cooling

1980

Limited

None

ERBJ

Electric Makeup Air

1980

Limited

None

ERC

Electric W/Evaporative Cooling

1980

Limited

None

ERE

Electric Furnace

1980

Limited

None

ERJ

Electic Makeup Air

1980

Limited

None

EUH

Electric Unit Heater

2000

Limited

EGE , EGH

FE

Natural Gas, LP, Power Vented, Fan-Type Unit Heater

2002

Yes

UDAP

FT

Natural Gas, LP, Power Vented, Fan-Type, Unit Heater with Tubular Heat Exchanger

2002

Yes

UDAP

FM

Room Heater

1962

None

None

HC

Hydronic Cabinet Heater

1999

Yes

None

HCREB

Packaged Heating/Makeup Air

1990

Yes

RGB

HCRP

Duct Furnace

1996

Yes

HRP

HCRPBE

Packaged Heating/Makeup Air

1990

Yes

RPB

HCRPV

Duct Furnace

1996

Yes

RP

HCRPVE

Packaged Heating/Makeup Air

1990

Yes

RPB *

HCRXE

Packaged Heating/Makeup Air

1990

Yes

RGB *

HCX

Duct Furnace

1996

Yes

HX

HCXE

Packaged Heating/Makeup Air

1996

Yes

HXE

HH

Hydronic Unit Heater

1999

Yes

WS

HR

Heat Recovery

1981

Yes

None

HRA

Heat Recovery

1981

Yes

None

HRB

Heat Recovery

1981

Yes

None

HREB

Packaged Heating/Makeup Air

1990

Yes

RGB

HRPBE

Packaged Heating/Makeup Air

1990

Yes

RPB

HRPVE

Packaged Heating/Makeup Air

1990

Yes

RPB *

HRXE

Packaged Heating/Makeup Air

1990

Yes

RGB *

HV

Hydronic Unit Heater

1999

Yes

WS

IR

Infrared

1964

None

RIH

IR-IP

Infrared

1959

None

RIH

LUSB

Unit Heater

1964

Limited

UDBP

LUSF

Unit Heater

1964

Limited

UDAP

OUB250-300

Oil Fired

1988

Limited

None

OUB95, 140, 185

Oil Fired

1992

Limited

OB

OUD

Oil Duct Furnace

1978

Limited

None

OUE

Oil, F.A.F

1978

Limited

None

OUH250-300

Oil Fired

1988

Limited

None

OUH95, 140, 185

Oil Fired

1992

Limited

OH

PAA

Packaged Heating/Makeup Air

1999

Limited

PCB

PAB

Packaged Heating/Makeup Air

1998

Limited

PCB

PAC

Packaged Heating/Makeup Air

1998

Limited

PCB

PAK

Packaged Heating/Makeup Air

1997

Yes

PGBL

PBB

Packaged Heating/Makeup Air

1998

Limited

PCB

PBC

Packaged Heating/Makeup Air

1999

Limited

PCB

PCCH

Packaged Heating/Makeup Air

2000

Limited

PCCA

PCCR

Packaged Heating/Makeup Air

2000

Limited

PCCA

PV

Separated Combustion Duct Furnace

1973

Yes

SC

PVA

Separated Combustion Unit Heater

1973

Yes

UDAS

PVB

Separated Combustion Unit Heater

1973

Yes

UDBS

PVC

Separated Combustion Unit Heater

1973

Yes

SCE

PVD

Separated Combustion Hi-Bay Unit

1973

Yes

None

PVE

Separated Combustion F.A.F.

1973

Yes

SCE

RAM

Evaporative Cooling

1990

Limited

REC

RC

DX Cooling Only

1980

Limited

RDCA, RDDA

RCE

Heat W/DX Cooling

1980

Limited

None

RCG

Heat W/DX Cooling

1980

Limited

None

RDE

Gas/ Electric Heat

1975

Limited

None

REB

Packaged Heating/Makeup Air

1990

Yes

RGB

REBC

Heat W/Evap Cooling

1978

Yes

RGB *

RHD

Separated Combustion Unit Heater

1975

None

SC Series

ROUD

Oil Duct Furnace

1978

Yes

None

ROUE

Oil F.A.F

1978

Yes

None

RPAK

Packaged Heating/Makeup Air

1990

Yes

RGBL

RPBC

Heat W/Evap Cooling

1978

Yes

None

RPBE

Packaged Heating/Makeup Air

1990

Yes

RPB

RPV

Duct Furnace

2003

Yes

RP

RPVAK

Packaged Heating/Makeup Air

1990

Yes

RPBL

RPVC

Makeup Air/Evaporative Cooling

1976

Yes

RPB *

RPVE

Packaged Heating/Makeup Air

1990

Yes

RPB *

RPVG

Heat W/DX Cooling

1979

Limited

RDCA, RDDA

RPVJ

Makeup Air

1978

Yes

RPB *

RTL

Infrared

1992

Limited

TR

RTN

Infrared

1992

Limited

TR

RXC

Makeup Air/Evaporative Cooling

1976

Yes

RGB *

RXE

Packaged Heating/Makeup Air

1990

Yes

RGB *

RXG

Heat W/DX Cooling

1979

Limited

RDCA, RDDA

RXJ

Heat

1976

Yes

RGB *

RXR

Duct Furnace/ Rear Access

1975

Limited

None

SCA

Natural Gas/LP, Separated Combustion, Fan-Type, Unit Heater

2002

Yes

UDAS

SCB

Natural Gas/LP, Separated Combustion, Blower-Type, Unit Heater

2002

Yes

UDBS

SCFD

Greenhouse Heater

1981

Limited

UDBS

SFT

Natural Gas/LP, Separated Combustion, Fan-Type, Unit Heater with Tubular Heat Exchanger

2002

Yes

UDAS

TR

Low Intensity, tubular, radiant heater

2003

Yes

VR

UA

Unit Heater

1975

Limited

F

US

Unit Heater

1945

None

F

USA

Unit Heater

1947

None

F

US-B

Unit Heater

1945

None

B

USF

Unit Heater

1961

None

F

XA

Unit Heater

1973

Yes

F

XB

Unit Heater

1973

Yes

B

XC

Unit Heater

1973

Yes

XE , CXE

XD

Hi Bay Unit

1973

Yes

None

XFD

Greenhouse Heater

1981

Limited

UDBP

XG

Heat W/DX Cooling

1979

Limited

None

XJ

Makeup Air

1979

Yes

XE

XL

Unit Heater

1988

Yes

F

XLB

Unit Heater

1988

Yes

B

XR

Duct Furnace/ Rear Access

1975

Limited

X , EEDU

* These models will require optional accessories to equal the obsolete model shown in first column

NOTE: DFT Furnace service is being handled by:
C.N.I.
3569 Bristol Pike
Bldg 1 Suite 103
Bensalem, PA 19020

215-244-9650

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How can I get a wiring diagram for specific piece of Reznor equipment?

Wiring diagrams for most units are available online at www.rezspec.com .

To access Online Wiring Diagrams By the Wiring Diagram Number or the Unit Serial Number, you must create an Account.

The link to do this can be found at the top of the page under the login Box (applicable to HVAC Contractors, Plant Maintenance, and Engineers) Click on the "Create My Account" link.

After creation of an account, you will be auto forwarded back to the home page and the choice will now be available to you under the Support tab. 

Diagrams for equipment manufactured prior to 1988 are not data based in this system.

To receive a wiring diagram for a unit built prior to 1988, send the model number and serial number for the unit to mail @southernairconcepts.com

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I have an old Reznor Heater. How can I determine exactly how old it is?

Most Reznor HVAC Equipment built since 1949 has received an individual Serial Number. The Serial Number can be found on the furnace section of the heater on the Unit Rating Plate.

The first two or three letters in the serial number will indicate the month and year of manufacture .

HOW TO DETERMINE HOW OLD YOUR REZNOR HEATER IS:

The date of manufacture on most Reznor HVAC Equipment built in North America can be determined by the Serial Number. Most unit carry a serial number which begins with two or three letters. These letters indicate the month and year of manufacture as shown in the table below.

Year Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec

1949

AA

AB

AC

AD

AE

AF

AG

AH

AI

AJ

AK

AL

1950

BA

BB

BC

BD

BE

BF

BG

BH

BI

BJ

BK

BL

1951

CA

CB

CC

CD

CE

CF

CG

CH

CI

CJ

CK

CL

1952

DA

DB

DC

DD

DE

DF

DG

DH

DI

DJ

DK

DL

1953

EA

EB

EC

ED

EE

EF

EG

EH

EI

EJ

EK

EL

1954

FA

FB

FC

FD

FE

FF

FG

FH

FI

FJ

FK

FL

1955

GA

GB

GC

GD

GE

GF

GG

GH

GI

GJ

GK

GL

1956

HA

HB

HC

HD

HE

HF

HG

HH

HI

HJ

HK

HL

1957

IA

IB

IC

ID

IE

IF

IG

IH

II

IJ

IK

IL

1958

JA

JB

JC

JD

JE

JF

JG

JH

JI

JJ

JK

JL

1959

KA

KB

KC

KD

KE

KF

KG

KH

KI

KJ

KK

KL

1960

LA

LB

LC

LD

LE

LF

LG

LH

LI

LJ

LK

LL

1961

MA

MB

MC

MD

ME

MF

MG

MH

MI

MJ

MK

ML

1962

NA

NB

NC

ND

NE

NF

NG

NH

NI

NJ

NK

NL

1963

OA

OB

OC

OD

OE

OF

OG

OH

OI

OJ

OK

OL

1964

PA

PB

PC

PD

PE

PF

PG

PH

PI

PJ

PK

PL

1965

QA

QB

QC

QD

QE

QF

QG

QH

QI

QJ

QK

QL

1966

RA

RB

RC

RD

RE

RF

RG

RH

RI

RJ

RK

RL

1967

SA

SB

SC

SD

SE

SF

SG

SH

SI

SJ

SK

SL

1968

TA

TB

TC

TD

TE

TF

TG

TH

TI

TJ

TK

TL

1969

UA

UB

UC

UD

UE

UF

UG

UH

UI

UJ

UK

UL

1970

VA

VB

VC

VD

VE

VF

VG

VH

VI

VJ

VK

VL

1971

WA

WB

WC

WD

WE

WF

WG

WH

WI

WJ

WK

WL

1972

XA

XB

XC

XD

XE

XF

XG

XH

XI

XJ

XK

XL

1973

YA

YB

YC

YD

YE

YF

YG

YH

YI

YJ

YK

YL

1974

ZA

ZB

ZC

ZD

ZE

ZF

ZG

ZH

ZI

ZJ

ZK

ZL

1975

AAA

AAB

AAC

AAD

AAE

AAF

AAG

AAH

AAI

AAJ

AAK

AAL

1976

ABA

ABB

ABC

ABD

ABE

ABF

ABG

ABH

ABI

ABJ

ABK

ABL

1977

ACA

ACB

ACC

ACD

ACE

ACF

ACG

ACH

ACI

ACJ

ACK

ACL

1978

ADA

ADB

ADC

ADD

ADE

ADF

ADG

ADH

ADI

ADJ

ADK

ADL

1979

AEA

AEB

AEC

AED

AEE

AEF

AEG

AEH

AEI

AEJ

AEK

AEL

1980

AFA

AFB

AFC

AFD

AFE

AFF

AFG

AFH

AFI

AFJ

AFK

AFL

1981

AGA

AGB

AGC

AGD

AGE

AGF

AGG

AGH

AGI

AGJ

AGK

AGL

1982

AHA

AHB

AHC

AHD

AHE

AHF

AHG

AHH

AHI

AHJ

AHK

AHL

1983

AIA

AIB

AIC

AID

AIE

AIF

AIG

AIH

AII

AIJ

AIK

AIL

1984

AJA

AJB

AJC

AJD

AJE

AJF

AJG

AJH

AJI

AJJ

AJK

AJL

1985

AKA

AKB

AKC

AKD

AKE

AKF

AKG

AKH

AKI

AKJ

AKK

AKL

1986

ALA

ALB

ALC

ALD

ALE

ALF

ALG

ALH

ALI

ALJ

ALK

ALL

1987

AMA

AMB

AMC

AMD

AME

AMF

AMG

AMH

AMI

AMJ

AMK

AML

1988

ANA

ANB

ANC

AND

ANE

ANF

ANG

ANH

ANI

ANJ

ANK

ANL

1989

AOA

AOB

AOC

AOD

AOE

AOE

AOG

AOH

AOI

AOJ

AOK

AOL

1990

APA

APB

APC

APD

APE

APF

APG

APH

API

APJ

APK

APL

1991

AQA

AQB

AQC

AQD

AQE

AQF

AQG

AQH

AQI

AQJ

AQK

AQL

1992

ARA

ARB

ARC

ARD

ARE

ARF

ARG

ARH

ARI

ARJ

ARK

ARL

1993

ASA

ASB

ASC

ASD

ASE

ASF

ASG

ASH

ASI

ASJ

ASK

ASL

1994

ATA

ATB

ATC

ATD

ATE

ATF

ATG

ATH

ATI

ATJ

ATK

ATL

1995

AUA

AUB

AUC

AUD

AUE

AUF

AUG

AUH

AUI

AUJ

AUK

AUL

1996

AVA

AVB

AVC

AVD

AVE

AVF

AVG

AVH

AVI

AVJ

AVK

AVL

1997

AWA

AWB

AWC

AWD

AWE

AWF

AWG

AWH

AWI

AWJ

AWK

AWL

1998

AXA

AXB

AXC

AXD

AXE

AXF

AXG

AXH

AXI

AXJ

AXK

AXL

1999

AYA

AYB

AYC

AYD

AYE

AYF

AYG

AYH

AYI

AYJ

AYK

AYL

2000

AZA

AZB

AZC

AZD

AZE

AZF

AZG

AZH

AZI

AZJ

AZK

AZL

2001

BAA

BAB

BAC

BAD

BAE

BAF

BAG

BAH

BAI

BAJ

BAK

BAL

2002

BBA

BBB

BBC

BBD

BBE

BBF

BBG

BBH

BBI

BBJ

BBK

BBL

2003

BCA

BCB

BCC

BCD

BCE

BCF

BCG

BCH

BCI

BCJ

BCK

BCL

2004

BDA

BDB`

BDC

BDD

BDE

BDF

BDG

BDH

BDI

BDJ

BDK

BDL

2005

BEA

BEB

BEC

BED

BEE

BEF

BEG

BEH

BEI

BEJ

BEK

BEL

2006

BFA

BFB

BFC

BFD

BFE

BFF

BFG

BFH

BFI

BFJ

BFK

BFL

2007

BGA

BGB

BGC

BGD

BGE

BGF

BGG

BGH

BGI

BGJ

BGK

BGL

2008

BHA

BHB

BHC

BHD

BHE

BHF

BHG

BHH

BHI

BHJ

BHK

BHL

2009

BIA

BIB

BIC

BID

BIE

BIF

BIG

BIH

BII

BIJ

BIK

BIL

2010

BJA

BJB

BJC

BJD

BJE

BJF

BJG

BJH

BJI

BJJ

BJK

BJL

2011

BKA

BKB

BKC

BKD

BKE

BKF

BKG

BKH

BKI

BKJ

BKK

BKL

2012

BLA

BLB

BLC

BLD

BLE

BLF

BLG

BLH

BLI

BLJ

BLK

BLL

2013

BMA

BMB

BMC

BMD

BME

BMF

BMG

BMH

BMI

BMJ

BMK

BML

2014

BNA

BNB

BNC

BND

BNE

BNF

BNG

BNH

BNI

BNJ

BNK

BNL

2015

BOA

BOB

BOC

BOD

BOE

BOF

BOG

BOH

BOI

BOJ

BOK

BOL

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What size heater do I need for a space/room that measures (x ft. wide by y ft. deep) ?

Although this may seem like a simple question that can have a simple answer, it really isn't.
In order to determine the size heater that is needed for a specific application, many factors have to be considered including:

  • What is the cubic feet of the room? (length x width x height)
  • What is the insulation value of the walls, ceiling, floor, and any windows?
  • Are any adjacent room (beside, above or below) heated?
  • Where are you located? (a larger heater is needed in New York than New Orleans)
  • How much infiltration is there? (Cold air entering the room through cracks around window sills, or loading dock doors that periodically open and close)
  • What is the normal outside temperature during the heating season?
  • Where do you want to maintain the inside temperature?
  • Is there any inside air being exhausted to the outside? (Manufacturing processes, kitchen exhaust hoods, restrooms, laboratory exhaust hoods, etc.)
  • Will you simply be re-circulating the heated inside air, or do you want to introduce fresh air from outside into the heated space?

Other areas would need to be explored including the local building codes. For an accurate heating needs analysis, contact us at mail@southernairconcepts.com . In most cases an estimate can be given over the phone. For an exact analysis an on-site inspection by a qualified HVAC engineer may be required.

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