Could you tell me someone that sells a replacement vent hose for the Newair AC10000E portable air conditioner? Mine cracked last year. If I need to buy a whole new vent kit that would be acceptable.

In the link. You will need the connector won't you?

DeLonghi PACAN125HPEC Portable Air Conditioner Parts

https://www.ereplacementparts.com > delonghi-pacan12...
DeLonghi PACAN125HPEC Portable Air Conditioner Parts ; Window Bracket. $30.05 · NE1946 ; Blower Wheel. $28.61 · NE1639 ; Air Conditioner Exhaust Hose. $35.32 · NE2211.

Delonghi TL1854 Exhaust HOSE : Appliances - Amazon.com

https://www.amazon.com > DeLonghi-TL1854-Delong...
Bought this to replace the original hose which cracked after 4 years...fits perfectly...great quality, thanks! Read more. 2 people found ...
Rating: 4.4 · ‎336 reviews

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  Portable Air Conditioner Hose - AC Hose with 5" Diameter ...

  https://www.amazon.com > Kraftex-Conditioner-Portable-...
  
  Amazon.com: Portable Air Conditioner Hose - AC Hose with 5" Diameter, Clockwise Thread & Length up to 80" - Exhaust Hose for Portable Air Conditioner Vent ...
  
  ..

https://www.ebay.co.uk/itm/Replacement-Exhaust-Hose-Tubes-Pipe-Vent-Hose-Part-For-Portable-Air-Conditioners-/323792082160

Could this be what you're looking for: http://www.newair.com/manuals/newair-ac-14000h.pdf

Unfortunately there can be several reasons for your AC-14000E portable air conditioner not cooling well. As with most portable air conditioners the filter grates on the rear of the unit can be removed for cleaning. When those are removed you may be able to clean some portion of condenser coils. There is also the possibility that your portable AC has a refrigerant leak in the system and will not be able to cool effectively without a repair (which usually costs as much as a new portable AC). Portable AC's are not designed to be recharged and operate on a sealed refrigerant line so even finding someone able to repair it may be a challenge. Your best bet is contacting the company you bought it from and talking through some solutions, they most likely have experience with these units and should be able to help you.

The portable AC units generally have a customizable, exhaust hose window, termination kit that comes with the unit.. In other words it can be cut to fit. The one that comes with the unit will fit casement windows, as well as sash windows.

To further assist you, I have included a link to the Owner's/Installation Manual for the model you referenced. You may download and print it if you like.

http://www.air-conditioner-home.com/manuals/ac-12000.pdf

Hope this helped you. Please let me know. Thanks.

Its sounds like a refrigerant leak from the factory if you just got it. Check your warranty and call the manufacturer for repairs. Unfortunately there is no simple fix.

if it is also blowing cold air out of the other vents you need to vent the hot air its blowing outside

The longer hose will increase the heat in the room and that is why they recommend the short hose…addition to that it may overheat…if you are going to extend the hose you must use one as the dryer hose that insulated and fire proof…let me know if that help
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Likely needs freon has leak needs repair local hvac contractor can help. T

there are two separate solid plastic pieces between the hose and the body of the unit

i have a hose but I am about to donate the unit