EMS Energy Marketing Service Serving the HVAC industry since 1986 HVAC load Calculation Software “So easy, your dog could do it!” Whole house (block) or room-by-room loads Sizes duct system Selects equipment Performs cost analysis and ROI Login to EMS Load Calculator Degree day and weather info Works on any device, anywhere there is an.

Right-J® Manual J Load Calculations & Manual S: Right-J ® is the industry leading residential load calculation software since 1986. It enables designers of all skill levels to perform ACCA and ANSI approved Manual J calculations quickly and with ease.
Speed-Sheets must be used in conjunction with the printed manuals on which each is based, and are not a replacement for full-featured ACCA-approved software. Speed-Sheet for ACCA Manual J (Abridged Edition) Speed-Sheet for ACCA Manual D (Residential Duct Design) Speed-Sheet for ACCA Manual N (Commercial Load Calculation).
The latest version of Cool Calc Manual J is not just an upgrade, it is a complete redesign from the ground up. We spent the last two years taking the simplest load calculation tool in the industry and making it a whole lot simpler.
Manual J Residential Load Calculation Eighth Edition. Put your presentation title or confidentiality info here. Big Picture: Iterative Process. Load calculations 2.

Load Calculations and Duct Sizing- Easy and Powerful

Rhvac makes HVAC load calculations, duct sizing, equipment selection, and sales proposals as easy as they can be - with one-click help on virtually every input, favorite material lists, automatic error checking and more. No ACCA Manual J, D and S HVAC design program does more than Rhvac. Rhvac Desktop is a Windows program, and Rhvac Online is a web application able to run on all internet devices including iPads, tablets, computers, and smart phones. Rhvac Online is the only web based application on the market today that can do all three code required ACCA Manual J, D, and S calculations. Try Rhvac and see if it isn't the most user-friendly and powerful HVAC design program on the market today!

Technical support? Nobody beats Elite Software. Call 979-690-9420 during normal business hours for immediate answers to your questions or call John Walsh anytime at 859-468-6000 for free 24/7 (USA only) technical support.

Features

Calculates peak heating and cooling loads (both block and room by room) in accordance with ACCA Manual J Eighth Edition, Version 2. Rhvac is approved by ACCA.
Calculates Duct Sizes, System Losses, and fan static pressure requirement in accordance with ACCA Manual D. Lets you enter the entire duct system, or individual ducts if you prefer.
Provides ACCA Manual S Equipment Selection Report.
Performs full Manual S performance data interpolation on data from any manufacturer.
Determines building tonnage and room CFM requirements.
Automatically generates a filled in ACCA HVAC design review form.
Automatically generates a filled in Energy Star HVAC Design Report.
Helps Comply with the International Residential Code (IRC) and the International Energy Conservation Code (IECC).
Incorporates Manual J Addenda A, B, C, and D!
Exports to EnergyPro, powerful energy analysis software. (Desktop Only)
Links to REM/Rate and Ekotrope, which are both RESNET certified Home Energy Rating System (HERS) software (Desktop Only)
Links to REScheck, DOE's energy codes program. (Desktop Only)
Links to the Energy Gauge USA home energy rating program. (Desktop Only)
Generates an Hourly Room Net Gain report to help you design zoned systems. (Desktop Only)
Generates a Building Rotation report that shows you tonnages and room CFM requirements at each rotation. (Desktop Only)
Includes a Buiding Rotation Duct Size Preview window that shows you the heating and cooling CFM for each room or duct in the project for each rotation of the building, as well as the maximum duct size of all rotations. (Desktop Only)
Calculates hydronic radiant floor tubing length required.
Computes room by room (including block load), zone, system & building
Calculates from manually entered data or directly from floor plans created with Drawing Board (sold separately only for Rhvac Desktop).
Rooms and zones can be assigned to 100 systems.
Allows virtually unlimited rooms grouped into 100 zones per system using drag and drop zoning techniques.
Allows 40 each of walls, windows, roofs, floors and doors per room.
Includes a wide selection of spray foam and SIP roofs and walls.
Allows custom construction materials and descriptions.
Lets you specify lists of 'Favorite' materials so you can select them easier.
Remembers your most recent material selections so you can reselect them easily.
Full material lists for Manual J roofs, walls, windows and doors, plus several materials we have added, such as foam roofs, walls and floors, and several of the SIPs walls and roofs.
Support for glass and window properties, including insect screen, ground reflectance and more.
Allowance for hot water piping losses. Lets you enter the characteristics of the hot water distribution pipe in order to calculate its sensible loss.
Accounts for heat recovery units and reduced fresh air loads.
Extensive duct gain and loss factors for all types of scenarios. Allows you to precisely specify the characteristics of the duct system in order to more accurately determine its sensible gain and loss. Includes latent gain due to the ductwork as well.
Option to calculate winter humidification requirements. Allows you to specify an indoor relative humidity in the winter in order to calculate the required gallons per day of water to be added, as well as the sensible loss due to the device.
Looks up HTM & U-values or lets you specify them.
Determines Adequate Exposure Diversity status.
Links to Graphic Manual D Ductsize, Bill of Materials, Energy Audit, ECA Ground Loop Sizer, PsyChart, HVAC Solution and EnergyPro. The PsyChart program can import Rhvac system data directly into its Air Handler Model window. (Desktop Only)
No copy protection!
Displays psychrometric chart. (Desktop Only)
Lets you select equipment from AHRI databases.
Prints exploded color pie charts, bar graphs, and custom sales proposals. (Desktop Only)
Allows decimal feet, feet-inches or metric length and width dimensions.
Allows exterior shading (overhangs and offsets).
Provides inputs for summer & winter partition temperature differences.
No annual fee for Rhvac Desktop - Low Annual Fee for Rhvac Online

Overview

Rhvac is available in both an online and desktop version. The desktop version has a one time fee and works on all Windows computers. Rhvac Online is subscription based and works on all computers, tablets and smartphones with internet connection. The online and desktop versions can import and export project files between each other. Both versions calculate peak heating and cooling loads (both block and room by room) for residential buildings and some light commercial applications in accordance with ACCA Manual J, D, and S. Both versions of Rhvac include a complete ACCA Manual D duct sizing capability and a complete Manual S equipment selection. Data can be manually entered or automatically taken from a floor plan drawn with the optional Drawing Board program (available only within desktop Rhvac). The Heat Transfer Multipliers (HTM values) for all the walls, windows, doors, and roofs listed in Manual J are automatically looked up by the software as needed. Additional construction materials are easily added as well.

Design weather data for over 2,000 cities is built into the software. In addition, the user can revise the existing weather data and add more data as desired. Drag and drop zoning control is provided through the powerful and graphic Project Explorer feature of Rhvac Desktop. Zoning CFM adjustments are automatically handled by the software as needed. Equipment can be selected from AHRI databases that are included at no extra charge. Comprehensive reports list the general project data, equipment information, total building load summary, detailed room load calculations, and a room load summary for each zone and system complete with heating and cooling CFM values. Color graphic bar graphs and pie charts can be printed as well (Desktop Only). Other features in both Rhvac versions include glass shading, ventilation air, equipment loads, and default room data. Advanced features in Rhvac Desktop include complete rotation or mirroring of the entire building, and the ability to share data w

Manual N Load Calculation Software