Pull The Top

The photo above is from a video one of my techs took of proper condenser cleaning. I must say, he did a GREAT job of cleaning the coil and he was very careful with the top. However I STILL would have liked to see the top get completely removed during a full maintenance. Pulling the top usually just requires disconnecting the fan wires, cutting a few wire ties, taking out some screws and then removing the fan grille or the entire top and laying it top down in the grass.

This is ACTUALLY how I performed a maintenance, even before I started my own business.

Here is why –

  • If you wash from the outside – in you are not doing the best possible cleaning. Everyone knows that washing from the inside out is a superior method of cleaning.
  • If you lay the fan on top of the unit (like shown above) you risk twisting / damaging the wires, scratching the paint and bending the fan bade.
  • When you pull the top entirely you can more easily clean the dirt and leaves from the inside of the condenser, this should also be part of a proper maintenance because that dirt can reduce coil capacity as well as hold moisture against the base, compressor and accumulator resulting in corrosion.
  • With the top off you can get a better view of any wire rubouts or potential wire rub outs and address them before they cause a problem.
  • You can also visually inspect the compressor terminals for signs of heat and corrosion, potentially preventing a major issue such a terminal failure / “blowing a terminal”.

Obviously it will take about 5 mins longer and you will need to rewire it properly with the terminals snugly installed.

So what do you think?

— Bryan

P.S. – Here is the video in case you want to see what I mean and yes… he knows that cleaner isn’t always required when washing a coil but he used it for demonstration purposes

3 comments

  1. Joe Reinhard says:

    Completely agree with your procedure. Without top removed very unlikely a complete vacuum of bottom of outdoor unit occurred, thorough vacuum/clearing all drain holes, and thoroughly inspecting the compressor and, if ASHP, the RV for wiring/pipe issues and the accumulator (typically). Please keep preaching/teaching the proper sometimes more tedious procedures. Thanks.

  2. Barry Allison says:

    Do the job right . Remove the top cowling every time .

  3. Chris says:

    can you do a video on how to clean a double coil on a roof top unit. I am a one man show and want to see if you have any tips I could use. thanks !!

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