air exchanger


Definition of air exchanger

: a ventilation and climate control system or device that exchanges air inside a building with fresh air from outside the building and that typically transfers heat between the outgoing and incoming air in order to reduce the energy required to maintain the building's indoor temperature An air exchanger is often added to the ductwork of tightly built houses that have only minimal ventilation.Ultimate Guide to Home Repair and Improvement, 2006

First Known Use of air exchanger

1876, in the meaning defined above

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Buying Guide

Our Reviews team has selected the best smart thermostats.

Learn More About air exchanger

Time Traveler for air exchanger

Time Traveler

The first known use of air exchanger was in 1876

See more words from the same year

Dictionary Entries Near air exchanger


air exchanger

air explorer

See More Nearby Entries 

Statistics for air exchanger

Cite this Entry

“Air exchanger.” Dictionary, Merriam-Webster, Accessed 4 Oct. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!