Climatemakers Ltd. of VA
Free Estimates Available 757.600.0422
Call Us 365 Days Of The Year "We Make The Weather Behave (Inside)"

Thermostat "ON" And "AUTO" Fan Buttons

Q. What's the difference between the "ON" and "AUTO" fan buttons on my thermostat?

A. In the "Auto" (automatic) position, the blower in the heating mode cycles (goes off and on) because it is controlled by the room temperature. In the "On" position the blower runs continuously 24/7.

Two additional advantages occur from "ON" position operation.

  • If you have indoor air quality products, you get a continuous flow of clean air.

  • Continuous Air Circulation (CAC) prevents the air from stratifying (warm air rising; cooler air falling) that occurs doing the "Off" cycle of a blower that is set to "AUTO".

  • One disadvantage can occur from "ON" position operation in older homes due to higher infiltration between the outside and indoor air; it can create a higher humidity level within the home.


The company You Choose To Install and Service Your System Will Determine The Degree of Comfort and Satisfaction You Enjoy.

These "Common HVAC Problems" are provided FREE and as a consequence Climatemakers does not assume any liability resulting from any information we provide. In all cases where there is any possibility of injury, consequential damage, direct damage to your equipment or when recommended by the equipment manufacturer, your system should be repaired, inspected or maintained by a qualified technician.

Got a question? Need more information? Have a constructive comment? Click here.

If you find an error on this page I would appreciate it if you would email us or call (757) 600-0422.

Our Customers Say It Best

  • “The crew & installation were impressive.”


  • “Tim was very professional as well as courteous.”

    Joyce G.

  • “I sincerely thank you for the comfort of cool air in my home.”

    B. Jenkins

  • “I am pleased to know that I can depend on Climatemakers!”

    C. Giesinger

  • “Reasonable Pricing, Efficient Istallation and Professional Service- I highly recommend!”


  • “I'm overly very happy with them because they were responsive in fixing issues.”

    L. Sznyter

  • “Always been satisfied with your products and workmanship.”

    B. Crutsinger

  • “All employees were courteous and hard-working.”

    G. Brindle

  • “Superior Customer Service Skills”


  • “I am very satisfied.”

    S. Wetmore

  • “We had nothing but a good experience with your company.”

    S & R Burkhead

  • “Always pleased with the service.”

    F. Stetler

  • “THE BEST”

    Nancy Fentress

  • “I'll keep up the Fan Club!”

    P. Matthews

  • “Completely professional.”

    T. McElhaney

Great Service Is Our Mission

Total Indoor Comfort Starts With Climatemakers
  • Available 365 Days / Year For Your Convenience

  • Seasonal Promotions & FinancingYear Round

  • Trane Comfort Specialists & Servicing All Brands

  • 65 Years Experience & Backed by Warranties

  • Trained & Licensed Techs Fix It Right The 1st Time

  • Courteous, Knowledgeable Office Staff

  • Using Only the Best Equipment & Tools

  • Careful to Keep Your Home Clean & Comfortable