How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask BillyHvac Your Own Question
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22388
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Type Your HVAC Question Here...
BillyHvac is online now
A new question is answered every 9 seconds

I installed a new goodman air conditioner last year.

Customer Question

I installed a new goodman air conditioner last year. For some reason my suction pressure is lower than normal and my head pressure is higher. Could this be because of the piston? Normally i use txv valve and never have issues.
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.

It very well could be an obstruction at the piston.

Is the indoor coil clean, filter clean and good air flow?
Outdoor coil clean?

If those items are fine then I would say you have a blockage. Did you purge nitrogen while brazing?
Customer: replied 1 year ago.

Yes sir. Would you suggest pulling out piston, and purging line set again.

Expert:  BillyHvac replied 1 year ago.
Correct..I would pump into system and blow out lines and coil.

Reattach, vauum and let go.

If you really want to go an extra step...reclaim..unhook, purge,,and drop in a new charge.

Check the piston physically to make sure it is not stuck....

Expert:  BillyHvac replied 1 year ago.
Hello again,

without rating the service the question stays on active/prompt list.

Please rate service and I will move off active list