How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
What is a TX valve or TXV for an air conditioner or heat pump system?
Monday, August 13, 2018
Both are abbreviations for a Themal Expansion Valve, which controls the flow of refrigerant into the evaporator coils of the interior unit (air handler) of your heat pump or air conditioning system. You are more likely to see a note scrawled on the font of the unit (like in the photo above) indicating that it was replaced, or an item on your repair bill for it, than ever actually see one. It uses a temperature sensing bulb to adjust the flow of refrigerant and keep pressure low to allow best level of expansion of the compressed liquid back in a gas. Also see Why is the air conditioning temperature split (delta T) fluctuating up and down while the system is running?
• • • • • • • • • • • • • • • • • • • • • • • • • • • •
To learn more about heating and air conditioning systems, see these other blog posts:
• How can I find out the SEER of my air conditioner?
• My air conditioner won't turn on. What's wrong?
• How can I find out the size of my air conditioner?
• How can I tell whether the condenser (outdoor unit) is an air conditioner or heat pump?
• Where is the air filter for my central air conditioner and furnace? I can’t find it?
• Does an old air conditioner use more electricity as it ages?
• How did homes stay cool in Florida before air conditioning?
• What is wrong with an air conditioner when the air flow out of the vents is low?
• Why has the thermostat screen gone blank?
• Why does it take so long to cool a house when an air conditioner has been off for a while?
• Why is my air conditioner not cooling enough?
• What are the most common problems with wall/window air conditioners?
• Will closing doors reduce my heating and cooling costs?
Visit our HEATING AND AIR CONDITIONING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
Click Below
for Links
to Collections
of Blog Posts
by Subject
Top 5 results given instantly.
Click on magnifying glass
for all search results.
Search
This
Site
Buying a home in North/Central Florida? Check our price for a team inspection by two FL-licensed contractors and inspectors. Over 8,500 inspections completed in 20+ years. In a hurry? We will get it done for you.
