Popular Posts

Friday, December 16, 2011

Loud Noise From Your Heat Pump


We get calls from customers often during the winter months asking why their heat pump is suddenly running really loudly.  What most people don't know or maybe forget, is that heat pumps come equipped with a defrost cycle that is designed to remove frost from the coil.

When a heat pump is operating in the heating mode or heat cycle, the outdoor air is relatively cool and the outdoor coil acts as an evaporator.  Under certain conditions of temperature and relative humidity, frost might form on the surface of the outdoor coil.  The layer of frost will interfere with the operation of the heat pump by making the pump work harder and, therefore, inefficiently.  The frost must be removed.  A heat pump has a cycle called a defrost cycle, which removes the frost from the outdoor coil.  A heat pump unit will defrost regularly when frost conditions occur.  The defrost cycle should be long enough to melt the ice, and short enough to be energy-efficient.  In the defrost cycle, the heat pump is automatically operated in reverse, for a moment, in the cooling cycle.  This action temporarily warms up the outdoor coil and melts the frost from the coil.  In this defrost cycle, the outdoor fan is prevented from turning on when the heat pump switches over, and the temperature rise of the outdoor coil is accelerated and increased.  The heat pump will operate in the defrost cycle until the outdoor coil temperature reaches around 57° F.  The time it takes to melt and remove accumulated frost from an outdoor coil will vary, depending on the amount of frost and the internal timing device of the system.

So next time when it gets really cold outside and you hear your heat pump sounding louder than usual, odds are it's just going into defrost mode.  Hopefully this will give you some insight into the workings of your heat pump and maybe save you some money so you won't have to pay a service technician to come out and tell you that your heat pump is fine and is just going into defrost mode.  Environmental wishes you all a happy holidays!


-Nickadeemus
919-535-8422
www.enviro-nc.com

32 comments:

  1. This can happen in summer and winter a heatpump will freeze up with low freon

    ReplyDelete
  2. I have read your blog. And excellent blog about heat pump and very well for the environment. Thanks...

    Stamford Heating Services

    ReplyDelete
  3. Nice post. Worth to help an Emergency plumbers Glasgow so his/her provision of better services to his or her clients.

    ReplyDelete
  4. So if I hear a loud noise from my heat pump, there's no need to call for hvac repair in Auburn WA? It's just a normal thing?

    ReplyDelete
  5. People helping people - it doesn't get much better than that. Thank you for this answer

    ReplyDelete
  6. Hello, I stumbled upon your blog using yahoo. It is a well prepared article. I will definitely come back in order to browse more of your materials. Thanks for the post.

    ReplyDelete
  7. most of the times it will occur in the summer, just gonna try dessert mode next time as it happen

    ReplyDelete
  8. I have definitely heard loud noises coming from my heat pump before. I used to be worried about it, but this article was very useful in describing the noise to me! Now I know that it is nothing serious and that it is just routine. However, if I do hear anything louder than a violent vibration, I am going to call someone to come look at it, just in case.

    http://www.nebraskaheatingandair.com/

    ReplyDelete
  9. My old heat pump used to make a lot of noise. I got a new one that is much more quiet. If this one starts to make a lot of noise, I'm going to have someone come look at it. To me, it is better to be safe than sorry when it comes to home heating. http://www.allheatingservices.com/

    ReplyDelete
  10. Hey, great blog. Very informative and very well written. Thanks for sharing information about heat pump.

    ReplyDelete
  11. There have been a few times that my heat pump has made some really loud noises and it was kind of scary. Good to know though that it is just the machine going into defrost mode when it is cold outside. Other than that though, it might be best to get some services to come take a look at it. Now I know how to go about things properly and can get it all taken care of.
    http://www.coolriteairconditioning.com.au

    ReplyDelete
  12. I am too inspired from this blog thanks for share this informative blog post with us keep it up for share more information with us.

    Heat

    ReplyDelete
  13. Thanks for sharing this technical information with us. It is very interesting. Now, I would not get annoyed when heat pump become noisy as your blog helps me to understand the mechanism of heat pump.

    www.mcelroyservice.com

    ReplyDelete
  14. Decent Post.
    You share such a great and valuable information.
    Thanks for sharing this info with us.
    ac repair fort myers fl

    ReplyDelete
  15. I read your Blog. Your share such a great and usefull information.
    Thanks for sharing.
    ac repair fort myers fl

    ReplyDelete
  16. Hey, great blog. Very informative and very well written. Thanks for sharing information about heat pump.
    Heating and Air Conditioning Toronto

    ReplyDelete
  17. This article helps me understanding in heat pumps working. Very nice article.

    Heating and Cooling Unionville

    ReplyDelete
  18. Really very useful tips are provided here.thank you so much.Keep up the good works.
    Heating and Cooling East York

    ReplyDelete
  19. This comment has been removed by the author.

    ReplyDelete
  20. For the most part, the HVAC contractor assumes an essential part in the administration business. It is fundamental to comprehend that a decent HVAC contractor would distinguish and tackle a wide range of issues related with your HVAC frameworks. hvac repair armonk

    ReplyDelete
  21. This is really a nice and informative, containing all information and also has a gWarmtepompenreat impact on the new technology. Thanks for sharing it,

    ReplyDelete
  22. You there, this is really good post here. Thanks for taking the time to post such valuable information. Quality content is what always gets the visitors coming. Warmtepompen

    ReplyDelete
  23. Irrespective of whichever brand you are buying, appliances often need care and repair of an expert technician. But, where will you get such a technician for GE, KitchenAid, Dacor, Viking, Wolf, KitchenAid, Ovens Repair in Orange County

    ReplyDelete