| Commercial AC & HP Home | Equipment Availability Tables |
| Efficiency Listings | Model Listings |
| Data Files | Glossary |


Glossary

ARI
The Air-Conditioning and Refrigeration Institute.
ASHRAE
American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Btu
British Thermal Unit
Capacity (Cooling)
The quantity of heat in Btu which an air conditioner or heat pump is capable of removing from an enclosed space in one hour, expressed as thousands of Btu/hr or MBtuh.
Energy-Efficiency Ratio (EER)
The ratio of the cooling capacity in Btu to the electric input to the air conditioner or heat pump in watt-hours.
Heating Seasonal Performance Factor (HSPF)
The total heating output of a central air conditioning heat pump, in Btu, during its normal usage period for heating, divided by the total electric energy input in watt-hours during the same period.
Phase
Phase of electrical service - single-phase or three-phase
Seasonal Energy-Efficiency Ratio (SEER)
The ratio of the total cooling capacity in Btu during a normal annual usage period to the total electric input in watt-hours to the air conditioner or heat pump during the same period.
Single-Package System
An air conditioner or heat pump with all major components housed in a single casing.
Split System
An air conditioner or heat pump consisting of two or more major components which are not enclosed in one cabinet. For a split system, a compressor and condenser are generally installed outside the building and the cooling coil is generally installed within the building.
Ton
(Heating or cooling) 12,000 Btuh.
Type
ARI type designations and descriptions:
HORC-A-C
HP w/Rmt Outdr Coil,Htg Only
HORC-A-CB
HP w/Rmt Outdr Coil,No Indr Fan,Htg Only
HORCU-A-C
Split Sys:HP w/Rmt Outdr Unit,No Indr Fan,Htg Only
HORCU-A-CB
Split Sys:HP w/Rmt Outdr Unit-Air-Src,Htg Only
HOSP-A
Sng-Pkg HP Air-Src,Htg Only
HOSP-GS
Sng-Pkg HP Grd Src Closed-Loop,Heat Only
HRC-A-C
HP w/Rmt Outdr Coil,No Indr Fan
HRC-A-CB
HP w/Rmt Outdr Coil
HRCU-A-C
Split Sys:HP w/Rmt Outdr Unit,No Indr Fan-Air-Src
HRCU-A-CB
Split Sys:HP w/Rmt Outdr Unit-Air-Src
HRCU-A-CB-O
Split Sys:HP w/Rmt Outdr Unit-Air-Src,Free Del
HRCU-GW-C
Split Sys:HP w/Rmt Chill-Cond,No Indoor Fan
HRCU-GW-CB
Split Sys:HP w/Rmt Chill-Cond
HRCU-W
Split Sys:HP w/Rmt Chill-Cond,Water Src, Ducted
HSP-A
Sng-Pkg HP Air-Src
HSP-A-O
Sng-Pkg HP Air-Src,No Fld-Inst Duct Sys
HSP-GS
Sng-Pkg HP Grd Src Closed-Loop
HSP-GW
Sng-Pkg HP Grd Water Src
HSP-W
Sng-Pkg HP Water Src, Ducted
HSP-W-O
Sng-Pkg HP Water Src, Free Delivery
RC-A
AC w/Rmt Air-Cool Cond
RC-E
AC w/Rmt Evap-Cool Cond
RC-W
AC w/Rmt Water-Cool Cond
RCU-A
Split Sys:Air-Cool Cond Unit
RCU-A-C
Split Sys:Air-Cool Cond Unit,Coil Alone
RCU-A-CB
Split Sys:Air-Cool Cond Unit,Coil w/Blwr
RCU-A-CB-O
Split Sys:Air-Cool Cond Unit,Coil w/Blwr,Free Del
RCU-E-C
Split Sys:Evap-Cool Cond Unit,Coil Alone
RCU-E-CB
Split Sys:Evap-Cool Cond Unit,Coil w/Blwr
RCU-W-C
Split Sys:Water-Cool Cond Unit,Coil Alone
RCU-W-CB
Split Sys:Water-Cool Cond Unit,Coil w/Blwr
RCUY-A-CB
Yr-Rnd AC,Rmt Air-Cool Cond Unit
RCUY-A-CB-O
Yr-Rnd AC,Rmt Air-Cool Cond Unit,No Fld-Inst Duct Sys
RCUY-E-CB
Yr-Rnd AC,Rmt Evap-Cool Cond Unit
RCUY-W-CB
Yr-Rnd AC,Rmt Water-Cool Cond Unit
RCY-A
Yr-Rnd AC,Rmt Air-Cool Cond
RCY-E
Yr-Rnd AC,Rmt Evap-Cool Cond
RCY-W
Yr-Rnd AC,Rmt Water-Cool Cond
SP-A
Sng-Pkg AC,Air-Cool
SP-A-O
Sng-Pkg AC,Air-Cool,No Fld-Inst Duct Sys
SP-E
Sng-Pkg AC,Evap-Cool
SP-W
Sng-Pkg AC,Water-Cool
SP-W-O
Yr-Rnd Sng Pkg AC,Water Cool,No Fld-Inst Duct Sys
SPY-A
Yr-Rnd Sng-Pkg AC,Air-Cool
SPY-A-O
Yr-Rnd Sng-Pkg AC,Air-Cool,No Fld-Inst Duct Sys
SPY-E
Yr-Rnd Sng-Pkg AC,Evap-Cool
SPY-W
Yr-Rnd Sng-Pkg AC,Water-Cool