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Bill of Materials - Quick Material and Labor Estimates

Automated Take-Off Makes it Easy

Bill of Materials (BOM) is an option within Rhvac for Windows that allows you to create a list of all the material and labor items needed to complete an HVAC project. A detailed and accurate list of all the items required, along with their associated costs, allows you to know your exact total cost of a project so that you can set a price to win the job with the profit you want!



Bill of Materials is an option within Rhvac for Windows (also known as Rhvac Desktop). You can try BOM within demo limits just by downloading a demonstration copy of Rhvac for Windows. To go beyond the demo limits on parts quantities, you must have an active license for both Rhvac and Bill of Materials. To use the full automatic ductwork takeoff feature of BOM, you must also have active licenses for Drawing Board and Graphic Manual D Ductsize.


Bill of Materials makes an accurate total estimate of the material and labor costs for your project, and this allows you to set a sales price to win the job with the profit you need. BOM comes with over 12,000 items in its parts database and it has capacity for many thousands more. It is easy to add, delete or edit items in the parts database. You can even import parts lists and prices from your own local supply houses.

One of the most attractive features of BOM is the automatic ductwork takeoff that it does from a duct system you draw using the Drawing Board and the Graphic Manual D Ductsize options within the Rhvac windows program. Duct sections of different materials and sizes, fittings, registers, and grilles are all automatically detected, categorized, and counted for you. Metal ductwork is also counted in square footage of surface area and total pounds. Whether you are working in full graphic mode with automated take-off ability or just using the simple manual entry take-off mode, the BOM option of Rhvac for Windows allows you to quickly account for all the material and labor items needed in your project.

Program Input

As mentioned previously, Bill of Materials can automatically do a parts take-off if you draw your ductwork with Drawing Board and Graphic Manual D Ductsize activated within Rhvac for Windows. When you first open the BOM window, it will already be filled out with all the ducts, fittings and registers shown on the drawing, including costs and prices as defined in the Automatic Ductwork Pricing feature. The next step would be to edit any of the cost and price data that you want to change for individual parts and add any additional parts or quoted items you want to include. You can select additional parts from the built-in parts database or you can enter a one-time part for the current bill of materials without having to first add it to the parts database.

When using BOM in Rhvac for Windows without Drawing Board or Graphic Manual D activated, you simply browse through the parts database and enter the appropriate quantities for all of your items. BOM then extends these counts on parts to obtain the correct total material and labor costs. Even without the graphic options activated in Rhvac, BOM is still a very useful and powerful tool for doing project cost estimates and setting sales prices.

Although BOM is oriented towards HVAC estimating, it can estimate for many other trades as well. The parts database allows any type of parts to be added, and you can create any type of cost category you want. You can easily use BOM to do a plumbing or electrical project estimate, for example.

Flexible Reports

Bill of Materials lets you create and fully customize any kind of bill of materials report you want. In fact, you are given complete control over all aspects of the bill of materials report. You can choose a layout that shows only certain columns of data and turns off all the rest. You can select which colors and fonts to use and how to group the parts and cost categories you have. You can also save your custom report layout options for use in future projects. See some sample reports here.


Main Bill of Materials Window:


Bill of Materials Layout Dialog:


The Automatic Ductwork Pricing dialog lets you set the prices of ducts and fittings that might not already be in your database:


The Go To Source Object Menu:



















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