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  1. #11
    Join Date
    Jan 2014
    Posts
    4

    Default Re: Thirteen year-old electric heat-pump HVAC system: should we replace or repair?

    No, the first tech did not check the pressure. I talked to another HVAC tech today and he said he could install an after-market switch that would Tee into the high-pressure line and would not require draining the system, quoted $244.35 for parts and labor. I have a call into the company that did the bypass for their input.

  2. #12
    Join Date
    Dec 2007
    Location
    Tennessee
    Posts
    1,744

    Default Re: Thirteen year-old electric heat-pump HVAC system: should we replace or repair?

    Quote Originally Posted by Unk View Post
    No, the first tech did not check the pressure. I talked to another HVAC tech today and he said he could install an after-market switch that would Tee into the high-pressure line and would not require draining the system, quoted $244.35 for parts and labor. I have a call into the company that did the bypass for their input.
    That sounds like a leak waiting to happen. I would not do that. Either the system pressure has to be measured directly or they put a thermometer in each coil (condenser and evaporator) and refer to a chart that compares the two temperatures to the ambient air temperature do determine if the system has a sufficient charge. One of those tests must be done, otherwise the technician is just guessing.

  3. #13
    Join Date
    Mar 2014
    Posts
    1

    Default Re: Thirteen year-old electric heat-pump HVAC system: should we replace or repair?

    400S for pressure switch is too expensive. Hope you find the best way.

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