NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Buildings & Construction

Heating, ventilation and air conditioning equipment

News and Updates

University, NIST Researchers Create Residential Building Models to Evaluate Fairness of Electricity Tariffs

University, NIST Researchers Create Residential Building Models to Evaluate Fairness of Electricity Tariffs

Read more
University, NIST Researchers Develop Strategy for Cutting Home HVAC Electricity Costs

University, NIST Researchers Develop Strategy for Cutting Home HVAC Electricity Costs

Read more
A white, square plastic CO2 meter sits on a table in a restaurant setting, reading 621 ppm.

NIST’s Indoor CO2 Tool Can Help Assess Ventilation and Indoor Air Quality

Read more
View heating, ventilation and air conditioning equipment publications View heating, ventilation and air conditioning equipment research projects

Blog Posts

Joannie Chin stands with arms crossed, wearing safety goggles, in front of scientific equipment.

Building in a Changing Climate: A Q&A With NIST’s Joannie Chin

Read more
photo of a house. Solar panels on the roof.

That House on the Hill: Bringing Measurement Science Home

Read more
Ozone hole in 1978 and 2008

Refrigerants to the Rescue: Plugging the Ozone Hole

Read more
Was this page helpful?