How many wires are there in an HVAC system?

1 Answers

Write Your Answer

In the most basic of HVAC systems (such as an older forced air system) you might find just two wires and a simple mercury thermostat at the other end. The terminals inside the thermostat are probably marked R and W.

No video Answer Now
Was this helpful?
Share
Do you wish to get the latest heat pump news, technology, markets, and discounts? Subscribe Now!
0
Would love your thoughts, please comment.x
()
x