# High efficiency furnace venting **URL:** \ **Category:** Inspecting HVAC Systems\ **Created:** [February 14, 2017, 9:54pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854 "2017-02-14T21:54:42Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![jsafstrom](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jsafstrom/32/57038_2.png) [@jsafstrom](https://forum.nachi.org/u/jsafstrom)\ **Post date:** [February 14, 2017, 9:54pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/1 "2017-02-14T21:54:42Z")
I don’t see a lot of HE furnaces in the tract homes around here, but most have an intake in the attic and exhaust through the roof or the intake as a downward ‘J’ at the roof near the vertical exhaust vent. This one was a 2015 Carrier 59SP5A with intake and exhaust together vented to the exterior. Appeared to be an aftermarket ‘diversitech’ style or concentric vent kit. I wasn’t able to find in the furnace installation manual where these vents were acceptable or not. Any insight on this installation? ![P1900440.jpg](https://global.discourse-cdn.com/internachi/original/3X/3/4/34ceffa73b6611e57bf726cfc1fcc24ed9e0aac3.jpeg) ![P1900445.jpg](https://global.discourse-cdn.com/internachi/original/3X/f/4/f44329588d876fc929d9caa87fa5b12751890476.jpeg) ![P1900464.jpg](https://global.discourse-cdn.com/internachi/original/3X/f/f/ff1ac15078bc7b6454fa0c575d07533adbcdd29f.jpeg) [http://www.diversitech.com/Product-Line?id=a0jC0000005QG0EIAW](http://www.diversitech.com/Product-Line?id=a0jC0000005QG0EIAW) > **[Concentric Vent Kit for high efficiency gas furnace DCVK-20 Two Inch](https://www.budgetheating.com/Concentric-Vent-Kit-for-high-efficiency-gas-furnac-p/37047.htm)** > > Concentric Vent Kit for high efficiency gas furnace DCVK-20 Two Inch ---
**Author:** ![mgratton](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mgratton/32/58251_2.png) [@mgratton](https://forum.nachi.org/u/mgratton)\ **Post date:** [February 14, 2017, 10:18pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/2 "2017-02-14T22:18:49Z")
> **[59SP5A-09PD.pdf](https://www.utcccs-cdn.com/hvac/docs/1009/Public/07/59SP5A-09PD.pdf)** Hope this helps, ---
**Author:** ![jsafstrom](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jsafstrom/32/57038_2.png) [@jsafstrom](https://forum.nachi.org/u/jsafstrom)\ **Post date:** [February 14, 2017, 10:41pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/3 "2017-02-14T22:41:54Z")
pg 12 shows what a concentric vent kit is, but doesn’t specify use of it. If they show it in the manual without a big ‘X’ over it, I suppose it’s fine. ---
**Author:** ![cevans](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/cevans/32/244194_2.png) [@cevans](https://forum.nachi.org/u/cevans)\ **Post date:** [February 15, 2017, 12:05am UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/4 "2017-02-15T00:05:11Z")
Looks typical. ---
**Author:** ![Dan\_Carlos](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/dan_carlos/32/57465_2.png) [@Dan\_Carlos](https://forum.nachi.org/u/Dan_Carlos)\ **Post date:** [February 27, 2017, 7:14pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/5 "2017-02-27T19:14:15Z")
I haven’t seen any HE furnaces in a while. I am located in st. charles, Mo. Good luck on the install. ---
**Author:** ![dandersen](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/dandersen/32/59398_2.png) [@dandersen](https://forum.nachi.org/u/dandersen)\ **Post date:** [February 28, 2017, 4:04pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/6 "2017-02-28T16:04:49Z")
What is that puddle of water in the aux drain pan? May have something to do with the vent operation. ---
**Author:** ![kmcgrath](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/kmcgrath/32/261823_2.png) [@kmcgrath](https://forum.nachi.org/u/kmcgrath)\ **Post date:** [March 4, 2017, 1:30pm UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/7 "2017-03-04T13:30:55Z")
> [@dandersen](#): > > What is that puddle of water in the aux drain pan? > > May have something to do with the vent operation. No water, that’s simply an area of dust that has been disturbed. That install is absolutely fine … ---
**Author:** ![dbowers](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/dbowers/32/59651_2.png) [@dbowers](https://forum.nachi.org/u/dbowers)\ **Post date:** [March 11, 2017, 4:56am UTC](https://forum.nachi.org/t/high-efficiency-furnace-venting/113854/8 "2017-03-11T04:56:15Z")
Call a Carrier Distributor or Dealer and ask. MB Kiser; Carrier-Bock; Savage Heating & Air.