Expanded ratings data for HVAC equipment are data that show how the capacity and efficiency of the equipment vary under different operating conditions. The capacity of a unit varies primarily from changes in the outdoor dry bulb temperature, but also from changes in air flow and the entering dry and wet bulb temperature of the indoor air entering the cooling coil. Given that there are four parameters that affect the cooling performance of a unit, there are many variations in the way that manufacturers show these data sets in table form. The below image is one example of an expanded ratings table, and below that are links showing five other table formats that you might encounter while searching for expanded ratings data.

The following links take you to help pages within Rhvac Online (elitesoftapps.com).

Expanded Ratings Data - Example 1
Expanded Ratings Data - Example 2
Expanded Ratings Data - Example 3
Expanded Ratings Data - Example 4
Expanded Ratings Data - Example 5

Some HVAC manufacturers make their expanded ratings data open and available to the public, while others have special web sites that require an account in order to login.  For those sites requiring an account, obtaining an account can be as simple as registering, no credentials required, while others may require permission from a local distributor, or they may require the applicant to have an EPA number or contractor license number.

Note that for many manufacturers there are multiple sites containing product data. Sometimes a manufacturer will offer both a public and private login site for these data sets. Typically, the data will be provided as a pdf, with nominal capacity data listed up front, and the expanded ratings data shown at the very end of the document.

As you know, web sites are constantly changing. By the time you read this, some of the links listed below could be obsolete or not provide the desired data. More importantly, there could be new sites and pages available with the data you want. A good, simple search expression to use is the brand name followed by product data, as in, "Carrier Product Data." You will always get links to sites that will provide documents showing nominal capacity data. Its the expanded data ratings information that is more rare.

Once you obtain expanded ratings data, it is helpful to have software that can analyze these data sets. Most of the time you need information from the table data that does not occur right on the column headings of the tables. You most often need data for situations occurring "between the lines" on the tables, and this requires interpolation. Both Rhvac desktop and Rhvac Online have built-in features that can interpolate expanded ratings data. In addition, Elite Software even has a very low cost $49 online module called Manual S Calculator Online for this purpose as well.  See more on that calculator here.

Besides equipment web sites that display expanded ratings data, there are also web pages that go a step further and actually interpolate the expanded ratings data to deliver an adjusted net capacity of the unit in question. Most often, obtaining an adjusted capacity of a unit is the ultimate goal rather than just viewing the performance data sets themselves.

In alphabetical order, listed below are web links and comments for many of the most popular HVAC manufacturers. Be advised that just in the way expanded data table formats differ greatly between manufacturers, so too does the operation of their web sites. Some manufacturers have more intuitive web sites than others. Tips are given to help you navigate the various sites.

If you would like to contribute more web links for this type of equipment data or you believe that some of these links are in error or should be removed for any reason, please email info@elitesoft.com

The Elite Software Rhvac software, both the Windows desktop and online versions, contain data entry screens allowing you to enter information about the HVAC equipment for your project. These data screens vary based on whether the equipment is a standard air conditioner, heat pump, furnace or boiler, but they all ask for similar information such as the model number, efficiency, capacity, and more. Below is the data entry screen for a standard air conditioner from the Windows version of Rhvac.

In most cases, only a small portion of the equipment data allowed is actually needed, with the manufacturer, model type, model number, capacity, and efficiency being the most important. The software allows you to click into each field and directly enter the data you want to save. Alternately, you can create your own custom equipment database files that provide a one click selection of equipment models with all pertinent data. See more information on that below.

If you are going to enter equipment data manually, you can obtain information on all heating and cooling models from all manufacturers from the AHRI web site: https://www.ahridirectory.org. See more details about that below.

However, there are several issues with using data from the AHRI web site. One issue is that for air conditioners and heat pumps, you will only see total capacity, with no mention of the sensible and latent capacities that make up the total capacity. One workaround for this is to use a typical sensible to total ratio (S/T) to calculate the sensible capacity by knowing only the total capacity. If you look through the expanded ratings examples above, you will see S/T values ranging from 0.72 to 0.84. The industry has often used 0.77 as a typical average on the sensible to total ratio. As such, you can take whatever total capacity you read and multiply it by 0.77 to obtain an estimated sensible capacity of the unit in question. Having done that, you can then subtract the sensible capacity from the total capacity in order to estimate the latent capacity of a unit.

While you can estimate sensible and latent capacities knowing only the total capacity of an air conditioner or heat pump, these estimates are further compromised because the total capacities listed in AHRI are "nominal" capacities that are only valid for the AHRI test conditions, which include a 95 F outdoor temperature and an 80 F indoor temperature. Many inspectors want to see air conditioner and heat pump capacities adjusted for your indoor  temperature, typically 75 F, and for your local outdoor temperature. For these reasons, you should always attempt to find the adjusted sensible and latent capacities of your unit under the conditions it will be operating in. Only use the nominal capacity rating of an air conditioner or heat pump when you have no other choice. You can safely use the nominal capacity ratings of boilers and furnaces because these items deliver relatively constant heat outputs even with varying operating conditions.

As explained in the paragraphs above, expanded ratings data or a specific web app is needed to calculate the actual net capacity of an air conditioner or heat pump. There are five expanded data ratings examples shown above. Use these to learn how to read expanded ratings data tables. However, always look first to see whether the manufacturer you are using offers a website that actually calculates for you the adjusted total, sensible, and latent capacities for air conditioners and heat pumps. Most manufacturers now offer such web sites, and they are by far and away the easiest and most accurate way to obtain adjusted total, sensible, and latent capacities for cooling equipment.

When viewing data from the web sites below, remember that you can select information such as model numbers, efficiency, and capacity, and copy and paste those data one at a time into the equipment data screens of the Rhvac software. See the links below for access to numerous web sites with equipment data, and some with the ability to calculate adjusted equipment capacity ratings. To see more about how equipment data is entered into Rhvac 10 in order to create a Manual S report, watch this video here.

Besides just doing a copy and paste of information from the AHRI web site and the various manufacturer sites, Rhvac 10 provides the ability to create your own equipment database files. The idea is that you can create a database file for each manufacturer that you sell for and list 10-15 of the models that you sell most often. Furthermore, because most contractors work in a particular region, each model added to a database file can be saved with the adjusted capacities calculated for the exact indoor and outdoor conditions used by the contractor. In this way, custom database files that accurately reflect each contractor's particular situation can be created to provide one click selection of equipment models within Rhvac 10. To see how this is done, watch this video here.

AHRI - All Manufacturers' Nominal Performance Data

https://www.ahridirectory.org/Search/SearchHome?ReturnUrl=%2f
AHRI is the organization that tests and certifies the performance of HVAC equipment. Over 250 manufacturers are listed with AHRI, and millions of models are covered. The above link will list nominal standard performance data (capacity at 95 F) and an AHRI reference number for each of these models. This is a great site to use, as nominal performance data will often be very close to adjusted performance data that coincides with your actual outdoor and indoor conditions.


Advanced Distributor Products

www.adpnow.com/extratings
ADP is a coil manufacturer that provides downloadable spreadsheet files to display expanded ratings data of ADP coil  products when matched with condensing units from various manufacturers.  ADP offers 17 files for download that cover ADP coils used with these manufacturers: Aire-Flo, American Standard, Armstrong, Carrier, Goodman, ICP, Lennox, Luxaire, Maytag, Nordyne, Rheem, Trane, and York. Since some of these manufacturers are difficult to obtain expanded ratings from, it is often helpful to review how an ADP coil performs with certain equipment, as ADP coils typically perform similar to the manufacturers' own coils.

AirQuest

www.GoAirQuest.com


Amana

https://www.amana-hac.com/resources/literature-library
Select the ProductSpecs for your model.


American Standard

https://www.asdealernet.com/ebiz/default.aspx
You need to be an American Standard dealer to login, or have permission from an American Standard Distributor.


Arcoaire

www.icpeqp.com
Select to create a free, instantaneous account, and then login. Once in, select Setup to choose the brand desired from International Comfort Products. Fill out the Project page, then the Units page, and finally select Performance, where you will see the net adjusted performance for your selected unit and the conditions you entered. This web app does not display expanded ratings data. It contains those data sets and does all the interpolation calculations behind the scenes in order to display a net adjusted capacity for the unit selected.  See more data here: http://www.goarcoaire.com/go/index.asp?t=86


Bryant

Bryant dealers can access complete data by creating an account with www.hvacpartners.com
Some data sets are also available to the public here:
http://dms.hvacpartners.com/docs/1009/Public/00/Forms/AllItems.aspx
Performance data calculations for Bryant models can be done here without having to have an account:
http://www.MyBryantRatings.com


Carrier

Carrier dealers can access full data by creating an account with www.hvacpartners.com
Some data sets are also available to the public here:
https://www.carrier.com/residential/en/us/technical-support/#finddocuments
In the Find Documents section, select the product type, the model number, and then select to download Product Data.
Another source of Carrier data can be found here:
http://www.americancoolingandheating.com/carrier-product-data-specifications
Performance data calculations for Carrier models can be done here without having to have an account:
http://www.MyCarrierRatings.com


Champion

http://www.championhomecomfort.com/Residential/product-categories
Select to view the series you want, then the actual model number, and then select Tech Guide.


Coleman

http://www.colemanac.com
Select residential products, then the category (split systems or heat pumps), and then Tech Guide.


Comfortmaker

www.icpeqp.com
Select to create a free, instantaneous account, and then login. Once in, select Setup to choose the brand desired from International Comfort Products. Fill out the Project page, then the Units page, and finally select Performance, where you will see the net adjusted performance for your selected unit and the conditions you entered. This web app does not display expanded ratings data. It contains those data sets and does all the interpolation calculations behind the scenes in order to display a net adjusted capacity for the unit selected.  Product information can also be found here: http://gocomfortmaker.com/go/index.asp


Daikin

https://www.daikincity.com/Library/
At the Library page, select the type of equipment you want. Look under Engineering Manuals, find the model you want, click on the box to the left, and click on Add to Download queue. As soon as you have selected all the ones you want, click Download Queue on the top right. You will have a list of the ones in the queue, then click on the download button.


Day & Night

www.icpeqp.com
Select to create a free, instantaneous account, and then login. Once in, select Setup to choose the brand desired from International Comfort Products. Then fill out the Project page, then the Units page, and finally select Performance, where you will see the net adjusted performance for your selected unit and the conditions you entered. This web app does not display expanded ratings data. It contains those data sets and does all the interpolation calculations behind the scenes in order to display a net adjusted capacity for the unit selected.  Product information can also be found here: http://www.godayandnight.com/go/index.asp?NID=0:9:13&getItems=131&t=86&s=477&litmenu=airconditioners


FHP-Bosch

https://www.bosch-climate.us/products-bosch-thermotechnology/geothermal-heat-pumps/commercial-ac-products/fhp-guide-specs.html
FHP-Bosch units are ground source heat pumps, so their capacity does not vary directly with changes in the outdoor temperature. These units vary in capacity with changes in the water loop temperature, which depends on the ground conditions and design of the pipe loop itself. Since a proper loop design is assumed for an installation, designers are allowed to submit standard nominal capacities for these units.


Frigidaire

https://www.frigidairehvac.com/product-category/central-heating-cooling/air-conditioners/
Select the desired model, and then Technical Literature.


Geocomfort

http://residential.geocomfort.com/products
Geocomfort units are ground source heat pumps, so their capacity does not vary directly with changes in the outdoor temperature. These units vary in capacity with changes in the water loop temperature, which depends on the ground conditions and design of the pipe loop itself. Since a proper loop design is assumed for an installation, designers are allowed to submit standard nominal capacities for these units.


Goodman

https://www.goodmanmfg.com/support/literature-library
Select the ProductSpecs covering your model.


GrandAire by Baker Distributing

www.grandaireeqpsel.com


Heil

www.icpeqp.com
Select to create a free, instantaneous account, and then login. Once in, select Setup to choose the brand desired from International Comfort Products. Fill out the Project page, then the Units page, and finally select Performance, where you will see the net adjusted performance for your selected unit and the conditions you entered. This web app does not display expanded ratings data. It contains those data sets and does all the interpolation calculations behind the scenes in order to display a net adjusted capacity for the unit selected.  More data can also be seen here: http://www.goheil.com/go/index.asp


Keeprite

www.GoKeeprite.com

Kenmore

http://icpeqp.com/AHRIratings/ratings.aspx?Brand=Kenmore


Lennox

https://www.lennoxpros.com/
You have to register to obtain documents from this site. Non Lennox dealers are allowed to register, but anyone registering must have either an EPA or a contractor license number.


Luxaire

http://www.luxaire.com/
Select residential products, then the category (split systems or heat pumps), and then Tech Guide.

Maratherm
http://icpeqp.com/AHRIratings/ratings.aspx?Brand=Maratherm


Maytag

https://www.maytaghvac.com/Air-Conditioning-s/54.htm
Select the desired model, and then Technical Literature.


Mitsubishi

https://www.mitsubishicomfort.com/diamond-system-builder
Find in Air Handler under Indoor Equipment.
Find the Model number (without the 1), and select Engineering Data.


Payne
Performance data calculations for Payne models can be done here without having to have an account:
http://www.MyPayneRatings.com


Rheem

http://dsp.rheem.com/product-selector-login.aspx
To obtain expanded ratings data, Rheem allows anyone to become a DesignStar Professional by registering.


Ruud

http://dsp.ruud.com/product-selector-login.aspx
To obtain extended ratings data, Ruud allows anyone to become a DesignStar Professional by registering.


Tempstar

www.icpeqp.com
Select to create a free, instantaneous account, and then login. Once in, select Setup to choose the brand desired from International Comfort Products. Fill out the Project page, then the Units page, and finally select Performance, where you will see the net adjusted performance for your selected unit and the conditions you entered. This web app does not display expanded ratings data. It contains those data sets and does all the interpolation calculations behind the scenes in order to display a net adjusted capacity for the unit selected.  Product information can also be found here: http://www.gotempstar.com/go/index.asp?t=86&s=477


Tetco

http://residential.tetcogeo.com/products
Tetco units are ground source heat pumps, so their capacity does not vary directly with changes in the outdoor temperature. These units vary in capacity with changes in the water loop temperature, which depends on the ground conditions and design of the pipe loop itself. Since a proper loop design is assumed for an installation, designers are allowed to submit standard nominal capacities for these units.


Trane

www.comfortsite.com
You need to be a Trane dealer to login, or have permission from a Trane Distributor.


Water Furnace

https://www.waterfurnace.com/residential/products/literature
Water Furnace units are ground source heat pumps, so their capacity does not vary directly with changes in the outdoor temperature. These units vary in capacity with changes in the water loop temperature, which depends on the ground conditions and design of the pipe loop itself. Since a proper loop design is assumed for an installation, designers are allowed to submit standard nominal capacities for these units.


York

http://www.york.com/for-your-home
Select Products, then the desired product. Under downloads, select Technical Guide.