Looking for an energy auditor in Langdon, ND? Describe your project once and up to three certified energy auditors who work in Langdon and Cavalier County get back to you with a quote. It's free and there is no obligation.
Langdon is home to about 1,841 people (2024 Census Bureau estimate), a shrinking community (−3.4% since 2020). With 1,190 people per sq mi, it is a suburban area. Older homes and long heating or cooling seasons make energy audits worthwhile here.
Langdon at a glance
- Population (Census Bureau estimate, 2024)
- 1,841 (−3.4% since 2020)
- Rank in North Dakota
- 27th of 355 cities and towns
- Land area
- 1.5 sq mi
- Population density
- 1,190 people per sq mi (suburban)
- Type
- City (Langdon city)
- Main county
- Cavalier County
What to check before hiring in Langdon
- Certification: choose a RESNET or BPI certified professional.
- Rebates: in North Dakota, check your utility's programs before booking: some require their own approved auditors.
- Test-in, test-out: a blower door test before and after upgrades shows the result.
- Price drivers: home size, tests included and report detail.
Useful official resources
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ENERGY STAR
Energy efficiency guidance for homes.
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RESNET
Find a certified HERS rater.
Services available in Langdon
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Home energy audit
Whole-home assessment with blower door test and infrared scan, with a prioritized list of upgrades.
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HERS rating
HERS Index rating of a new or existing home by a RESNET-certified rater, for code compliance or programs.
Frequently asked questions in Langdon
How much does an energy audit cost in Langdon, ND?
It depends on the home and the tests. Describe your home: auditors who serve Langdon reply with a quote.
How long does it take?
Usually two to four hours on site.
Will the auditor sell me upgrades?
Some do; an independent auditor gives a neutral list.
Which certified energy auditors will contact me?
Up to three independent certified energy auditors who serve Langdon and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.