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Washington, DC

Washington, DC load calculations.

DC has a reputation for demanding permit reviews. Our clients have brought us DC projects on a weekend deadline and after rejected submittals, and walked away with permits.

Climate

IECC Climate Zone 4A. Row houses, additions and deep renovations of older homes are the typical DC project.

What matters in Washington, DC

  • Permits in the District run through the Department of Buildings. Complete mechanical documentation up front is the fastest route through review.
  • Renovations of older row houses have unusual envelopes and tight chases. Room-by-room loads and realistic duct routing matter here.
  • We also work across the region in Northern Virginia and suburban Maryland.

Services in Washington, DC

Every service is available statewide: Manual J, Manual S, Manual D, Manual N, Manual T, VRF design, energy calculations and permit documents.

Cities we work in

Anywhere in Washington, DC, including:

  • Washington, DC
  • Arlington
  • Alexandria
  • Bethesda
  • Silver Spring
  • Rockville
  • Fairfax
  • McLean
“I was in a bind and contacted LoadCalcs.net on Saturday to complete HVAC load calculations that I needed on Monday morning for a project in Washington DC. They did a wonderful job and worked through the tough DC guidelines.”
BWBrandon W. · Google review
“If I could give them 10 stars, I would. We used them to produce load calculations for a $1.75M home renovation project in DC and they absolutely nailed it. Our architect's mechanical plans were not up to snuff so we gave LoadCalcs our…”
BBBrands Build Culture · Google review

Questions

Do you work in Washington, DC?

Yes. We prepare load calculations, duct designs and energy reports for projects anywhere in Washington, DC. Everything is done remotely from your plans.

What design conditions do you use for Washington, DC?

We use ACCA design weather for the location closest to your project and the climate zone for your county, then state those assumptions in the report.

How do I get started?

Send us your questionnaire and plans, and we’ll get you an estimate right away.

Fast estimates

Send the plans. Get an estimate.

Send us your questionnaire and plans, and we’ll get you an estimate right away. Reach out during office hours and you’ll hear back within 30 minutes, whether it’s an email, text or call.

Fast estimate

Drop your plans. Get an estimate.

PDF or photos of the plan set. Pick your services and send.

    Services

    Reach out during office hours and you’ll hear back within 30 minutes, whether it’s an email, text or call. Have every detail handy? Fill out the full project questionnaire.