---
title: BuildSizer
image: https://info.atsspec.com/hubfs/ATS%20SpecTool%20Hero%20Image.png
---

# Spectrum Built

- [Book a Meet](https://meetings.hubspot.com/rebeca5/ptbook-a-demo-link-)

![ATS Product Logos\_Spec Tool - Colour White - No Padding](https://info.atsspec.com/hs-fs/hubfs/ATS%20Product%20Logos_Spec%20Tool%20-%20Colour%20White%20-%20No%20Padding.png?width=200&height=72&name=ATS%20Product%20Logos_Spec%20Tool%20-%20Colour%20White%20-%20No%20Padding.png "ATS Product Logos_Spec Tool - Colour White - No Padding")

WATER HEATER SIZING

BUILT FOR PLUMBING ENGINEERS

Evaluate hot-water demand, apply recognized sizing methodologies, compare system options, and generate project-ready results in one structured workflow.

Size with confidence. Compare with clarity. Document the decision.

[Join the BuildSizer Beta](https://info.atsspec.com/buildsizer#buildsizer-form)

Built by ATS Software, supporting plumbing engineers from specification to smarter selection.

![BuildSizer Laptop](https://info.atsspec.com/hs-fs/hubfs/BuildSizer%20Laptop.png?width=680&height=680&name=BuildSizer%20Laptop.png "BuildSizer Laptop")

WHY SPECTOOL FOR WATER HEATER SIZING?

Start with your building, hot-water demand, design criteria, and project requirements. BuildSizer brings these inputs into a workflow connected to ATS Software’s specification tools, manufacturer product data, engineering resources, and education.

![BuildSizer Top Features](https://info.atsspec.com/hs-fs/hubfs/BuildSizer%20Top%20Features.png?width=1300&height=68&name=BuildSizer%20Top%20Features.png "BuildSizer Top Features")

 IPC & ASHRAE Based Inputs

 Supports Mixed-Use Buildings

 Project Specific Parameters

 Compare Storage, Recovery & Energy

 Generate Sizing Reports

![IPC + ASHRAE Based Inputs](https://info.atsspec.com/hs-fs/hubfs/IPC%20+%20ASHRAE%20Based%20Inputs.png?width=100&height=100&name=IPC%20+%20ASHRAE%20Based%20Inputs.png)     Extensive building and fixtures libraries with demand values as per IPC & ASHRAE

![Supports Mix-Use Buildings](https://info.atsspec.com/hs-fs/hubfs/Supports%20Mix-Use%20Buildings.png?width=100&height=100&name=Supports%20Mix-Use%20Buildings.png)    Fixture-unit method and general service water heating sizing procedures

![Project Specific Parameters](https://info.atsspec.com/hs-fs/hubfs/Project%20Specific%20Parameters.png?width=100&height=100&name=Project%20Specific%20Parameters.png)    Input incoming water temperature, desired hot water temperature and system pressures for accurate results

![Compare Storage Recovery & Energy](https://info.atsspec.com/hs-fs/hubfs/Compare%20Storage%20Recovery%20%26%20Energy.png?width=100&height=100&name=Compare%20Storage%20Recovery%20%26%20Energy.png)    Clear, comparative results showing different sizing options and their implications on storage recovery & energy consumption

![Generate Sizing Reports](https://info.atsspec.com/hs-fs/hubfs/Generate%20Sizing%20Reports.png?width=100&height=100&name=Generate%20Sizing%20Reports.png)    Comprehensive reports that can be submitted as part of project documentation

FROM PROJECT INPUTS TO RESULTS IN FIVE EASY STEPS!

![BuildSizer Steps-1](https://info.atsspec.com/hs-fs/hubfs/BuildSizer%20Steps-1.png?width=1500&height=391&name=BuildSizer%20Steps-1.png "BuildSizer Steps-1")

[Join the BuildSizer Beta](https://info.atsspec.com/buildsizer#buildsizer-form)

 

ENTER YOUR EMAIL TO BE A BETA TESTER

![ATS Software Logo - Colour-3](https://info.atsspec.com/hs-fs/hubfs/ATS%20Software%20Logo%20-%20Colour-3.png?width=200&height=74&name=ATS%20Software%20Logo%20-%20Colour-3.png "ATS Software Logo - Colour-3")

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## Team Member Name

![team-member](https://cdn2.hubspot.net/hubfs/5377389/theme/images/stock-images/team-member-1.png)

Team member bio information.