COMcheck Customer Service Number — Expert Guide to Getting Support

Executive summary

COMcheck is the U.S. Department of Energy (DOE) compliance software used widely for demonstrating commercial building envelope and mechanical systems compliance with energy codes (IECC, ASHRAE 90.1 and certain state codes). It is distributed at no charge by DOE and is available as a web application and a downloadable desktop utility from the official site: https://www.energycodes.gov/comcheck. Because COMcheck is a federal, free tool used across jurisdictions, it does not operate like a commercial product with a single centralized “customer service number.”

If you are searching specifically for a COMcheck customer service number, the correct approach is to use DOE’s official support channels (web form, documentation, and code-contact lists) or to contact your local/state building department or an accredited third-party reviewer. This guide explains exactly where to go, what to prepare, typical response expectations, common error diagnostics, and alternatives when phone support is required.

Official COMcheck support channels

DOE maintains the authoritative COMcheck resources and support through the Building Energy Codes Program (BECP). Primary official resources are the COMcheck product page (https://www.energycodes.gov/comcheck) and the DOE contact page for energy codes (https://www.energycodes.gov/contact). These pages include downloads, FAQs, release notes, and a contact mechanism for technical questions about the software and its code logic.

Because the program is managed as a government service, there is no single “COMcheck customer service number” akin to a vendor hotline. Instead, use the DOE web contact form or the energy codes contact page for technical questions. For jurisdiction-specific interpretation, contact the building code official in the enforcing jurisdiction (city/state). If you do need an address for formal mail or escalation, DOE headquarters is located at 1000 Independence Ave SW, Washington, DC 20585.

What to prepare before contacting DOE or your jurisdiction

To receive fast, actionable help you should assemble a minimum package of information. At a minimum include: COMcheck version (Web or Desktop and release date/version number), operating system (if Desktop), project name, code year selected (e.g., 2015 IECC, 2019 ASHRAE 90.1), climate zone, and the .com or exported results PDF. Attach screenshots of error messages and any log text. Providing these items upfront reduces back-and-forth and accelerates resolution.

Also prepare a short reproducible test case: a minimal COMcheck project that demonstrates the problem (2–4 assemblies, single HVAC system or none). If the issue is jurisdictional (permit acceptance), include the local authority having jurisdiction (AHJ) name, permit office address, and any rejection notes they provided. Typical support interactions are quicker when you can share the exact COMcheck export (.rcf/.com or PDF output) plus a clear statement of the expected vs. observed behavior.

Quick checklist to include with any support request

• COMcheck type and version (Web or Desktop, e.g., COMcheck-Web; Desktop v4.x), OS and browser details if web (Chrome/Firefox versions).
• Code standard and year (example: ASHRAE 90.1-2016 or 2018 IECC), climate zone (e.g., CZ 4C), and project zip code.
• Attachments: exported COMcheck report PDF, the project file (.com or .rcf), screenshots of errors, and exact text of any rejection from the AHJ.
• Short reproduction steps and desired outcome (e.g., “I expect fenestration U-factor 0.35 to pass but it flags as 0.40”).

Common issues, troubleshooting and practical fixes

Many support requests relate not to a software bug but to input errors, mismatched code year, or jurisdiction acceptance. Common causes: wrong building type selected, climate zone mismatch (e.g., using CZ 3 when the jurisdiction uses CZ 4C), or using the prescriptive envelope path when the jurisdiction requires the trade-off or UA alternative. Verify the code year and the compliance path first—these resolve roughly half of all questions experienced by practitioners.

Specific input pitfalls to check: fenestration U-factor and SHGC entries (typical U-factor values range roughly from 0.25 to 0.65 for commercial glazed assemblies), assembly areas vs. perimeters entered correctly, and mechanical system types (RTU, VRF, etc.) matched to code system definitions. When COMcheck flags an assembly as non-compliant, inspect the assembly details screen—often a single decimal point in U-factor or a mis-typed area will explain failure. If COMcheck produces an unexplained error or crash, include the exported project file when contacting DOE support.

If an AHJ rejects a COMcheck report, the remedy is usually procedural: obtain a stamped compliance report signed by the responsible design professional or request the AHJ’s written explanation referencing their code version and specific acceptance criteria. For plan review or stamping services, expect market fees that vary widely; as a guideline, small plan reviews typically range from $150–$600, while complex commercial compliance packages can run $600–$2,000 depending on scope and jurisdiction (figures based on market observations 2020–2024).

When you need phone support or paid assistance

Because DOE focuses on web-based assistance, phone support is not the primary route for COMcheck questions. If you require immediate phone interaction, engage a local code consultant, an energy modeler experienced with COMcheck, or the local building department—many municipal permit offices provide phone lines for compliance questions. Search your state energy office or local building department directory for direct numbers; these are typically listed on city or county websites.

For commercial projects where response time and liability matter (e.g., expedited permits, large tenant fit-outs), consider contracting an energy compliance consultant or one of the third-party plan reviewers who provide validated COMcheck submissions and can offer direct phone support and stamp-ready deliverables. These vendors typically advertise guaranteed turnaround times (24–72 hours for small projects) and written deliverables aligned to the AHJ’s requirements.

Quick reference and next steps

Official COMcheck web page and resources: https://www.energycodes.gov/comcheck. General DOE energy codes contact: https://www.energycodes.gov/contact. DOE headquarters address for formal correspondence: 1000 Independence Ave SW, Washington, DC 20585. Assemble the required project files described above before submitting a request to minimize delays.

If you want, provide your project metadata now (COMcheck version, code year, climate zone, and the exported PDF) and I can write the exact message to send to DOE or your AHJ to speed up support. That message will include the precise fields and attachments that technical staff request first, saving you time.

What is a Comcheck number?

Comcheks have long contained 14 to 18-digit numbers known as “Express Codes.” In the past, Express Codes could only be used in conjunction with a printed check. However, that is no longer the case. COMDATA now allows carriers to issue drivers Express Codes without providing them with paper checks.

Is Comdata the same as Comcheck?

Comchek is a common payment method for businesses in the transportation and logistics industry and is often used by trucking companies. Comdata Comchek is the brand name for Comchek payments that are processed through Comdata, a leading provider of financial transaction services for the logistics industry.

What is the phone number for Comchek?

1-800-741-3939
For assistance with your account, please contact our Cardholder Services team at either of the numbers below: For Comdata OnRoad® cardholders, call 1-866-288-9990 and follow the voice prompts. For Comchek cardholders, call 1-800-741-3939 and follow the voice prompts.

What is the phone number for Comdata check verification?

Call the IVR at 1-888-265-8228. 2. Enter your Comdata Card number and press (#).

How do I contact Comdata customer service?

Questions? Call 615-370-7000 or call the toll free Customer Service number on the back of your card.

What is a Comdata number?

(800) 266-3282 | (615) 370-7000. For Cardholders*: (888) 265-8228. *We accept operator relay calls. If you are deaf, hearing impaired, or have a speech disability, please call for assistance. home | comdata.com.