# 2014 Lennox heat pump puts out 81 degrees for about an hour **URL:** \ **Category:** Inspecting HVAC Systems\ **Created:** [December 10, 2021, 1:15am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097 "2021-12-10T01:15:36Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 10, 2021, 1:15am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/1 "2021-12-10T01:15:36Z")
and then warmed up to 123 degrees as measured at the registers. I was about to report it as a defect…but then just happened to recheck towards the end of the inspection but literally for over an hour it was blowing at 80 degrees ambient temps were around 45 degrees outside This is not something I’ve experienced before. The unit appeared to be well cared for, the evap coils and coils at the compressor were clean as were all filters. ![IMG_0010](https://global.discourse-cdn.com/internachi/original/3X/c/2/c29adc4b4d9acdba09317dbef58fb969ce84913f.jpeg) ![IMG_0012](https://global.discourse-cdn.com/internachi/original/3X/7/0/700854c486c2d24f726f282cce0ffe4da556d833.jpeg) ![IMG_0056](https://global.discourse-cdn.com/internachi/original/3X/a/4/a499ba6ff0fecb279e9a62e13faf1d5908ee20d2.jpeg) ![IMG_0061](https://global.discourse-cdn.com/internachi/original/3X/7/d/7dbf1599bb086094083e64bc9e7a2871d9a1fbf6.jpeg) ![IMG_0100](https://global.discourse-cdn.com/internachi/original/3X/6/2/62a7dd2e3bd944e213f40aabd43b729811af7e34.jpeg) ---
**Author:** ![rkenney](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rkenney/32/405447_2.png) [@rkenney](https://forum.nachi.org/u/rkenney)\ **Post date:** [December 10, 2021, 1:44am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/2 "2021-12-10T01:44:19Z")
Try turning OFF the emergency heat. ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 10, 2021, 1:52am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/3 "2021-12-10T01:52:00Z")
I never did turn on the emergency heat. When I got there the heat was already on…set to 60 I bumped it to 64 and nothing else… then measured at the registers. without emergency heat…just normal heat…I always get over 95 degrees at the registers. just not sure if I should call this out or not… ---
**Author:** ![tglaze](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/tglaze/32/362210_2.png) [@tglaze](https://forum.nachi.org/u/tglaze)\ **Post date:** [December 10, 2021, 1:54am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/4 "2021-12-10T01:54:55Z")
Not uncommon for straight heat pump settings. Usually the backup heat strips provide the most heat output when activated and even if they are installed. The highest temp I ever got from a straight heat pump was 92 degrees. ---
**Author:** ![rkenney](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rkenney/32/405447_2.png) [@rkenney](https://forum.nachi.org/u/rkenney)\ **Post date:** [December 10, 2021, 1:57am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/5 "2021-12-10T01:57:30Z")
> [@mbatson2](#): > > just not sure if I should call this out or not What was the room temperature when the heat cut off? ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 10, 2021, 2:01am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/6 "2021-12-10T02:01:51Z")
wouldnt it notify you on the thermostat if the heat strips kick in? I would expect it would…but that doesnt seem to be the case. ![IMG_0154](https://global.discourse-cdn.com/internachi/original/3X/2/7/272f21b1d087674bbd955de1ae6ff7e13e97eef0.jpeg) and after about an hour it was reading over 120 which is what I commonly see. but on the thermostat it was still saying “heat” not “emergency heat” if that makes sense? ---
**Author:** ![bcawhern1](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/bcawhern1/32/408713_2.png) [@bcawhern1](https://forum.nachi.org/u/bcawhern1)\ **Post date:** [December 10, 2021, 2:32am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/7 "2021-12-10T02:32:06Z")
> [@mbatson2](#): > > wouldnt it notify you on the thermostat if the heat strips kick in? I dunno, have a photo of the thermostat when you got your high temp? ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 10, 2021, 2:59am UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/8 "2021-12-10T02:59:32Z")
no, and I wont be going back to that house have another inspection tomorrow. hopefully it will have a digital thermostat and I can get pics thanks ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 10, 2021, 9:16pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/9 "2021-12-10T21:16:49Z")
ok new property today goodman heat pump 2016 walked in and it was set at 67 outside ambient was around 55 turned it up to 70 and went and measured the temps at over 100 degrees. No indication of emergency heat being turned on. ![IMG_0267](https://global.discourse-cdn.com/internachi/original/3X/0/d/0da204f4a73fd5136b073b482ee686ceceaec196.jpeg) ![IMG_0268](https://global.discourse-cdn.com/internachi/original/3X/c/f/cf56c5c66603c1d7611ecb909d38c6dbed820b00.jpeg) I then turned it up to 75 and “auxiliary heat” came on at the thermostat. temps went up to over 120 this is what I find pretty much everyday. So this is why I was concerned when I was seeing 80 degree temps at the house yesterday does this make sense? ---
**Author:** ![ddagostino](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/ddagostino/32/60136_2.png) [@ddagostino](https://forum.nachi.org/u/ddagostino)\ **Post date:** [December 10, 2021, 9:20pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/10 "2021-12-10T21:20:11Z")
Is this an all electric HP? You can do an amp draw when the heat strips kick in if you want to confirm they’re functional. ---
**Author:** ![rkenney](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rkenney/32/405447_2.png) [@rkenney](https://forum.nachi.org/u/rkenney)\ **Post date:** [December 11, 2021, 12:32pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/11 "2021-12-11T12:32:34Z")
Measuring the temperature of air at the registers is always deceptive. The goal is to bring the ROOM temperature up to the thermostat setting. Register air quickly dissipates and cools as it mixes with cooler air in the room. A Home Inspector needs to check that each habitable room has a heat source and that it operates (supplies warm air). Any attempt to measure the temperature or efficiency of the heating or cooling will be misleading, time consuming and way beyond the standards. ---
**Author:** ![mtimpani](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mtimpani/32/58543_2.png) [@mtimpani](https://forum.nachi.org/u/mtimpani)\ **Post date:** [December 11, 2021, 3:00pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/12 "2021-12-11T15:00:01Z")
At 80 degrees, I would call it out. ---
**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:** [December 11, 2021, 5:26pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/13 "2021-12-11T17:26:19Z")
Call it out. You have an airflow problem. I see that filter crap inside the registers. Not helping. A furnace is not an air cleaner. They probibly have high density return filters as well. Let the HVAC guy yell at them… ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 11, 2021, 5:49pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/14 "2021-12-11T17:49:54Z")
thanks guys I did call it out in the report already I was worried that I had misdiagnosed and called out something that shouldnt have been. but guess I knew there was an issue as I do that temp test every day , and this one was low thanks for all the help! ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 11, 2021, 5:50pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/15 "2021-12-11T17:50:48Z")
that makes sense. perhaps I should stop measuring temps at registers ---
**Author:** ![mbatson2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mbatson2/32/57038_2.png) [@mbatson2](https://forum.nachi.org/u/mbatson2)\ **Post date:** [December 11, 2021, 6:11pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/16 "2021-12-11T18:11:01Z")
Hey, I guess I knew the heat strips were functional as once the emergency heat kicked in the temps jumped to over 120 degrees. my concern had been that under normal heating it was only getting to 80 degrees…and was putting that out for over an hour. Then it went to the heat strips. ---
**Author:** ![lmorrison](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/lmorrison/32/58376_2.png) [@lmorrison](https://forum.nachi.org/u/lmorrison)\ **Post date:** [December 11, 2021, 6:45pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/17 "2021-12-11T18:45:23Z")
The newer units/thermostats are somewhat tricky to bypass the unit’s brains that are programed for most energy efficient operation. From talking to some HVAC guys you may not be able to get the Heat Strips (or gas heat) to come on using **“Normal Controls”** \* if the outside temp is above a certain temperature (something like 45-50). You may need to really know what you are doing to bypass the normal operation of the Thermostat for Aux-heat/heat strips to kick on (same with some those that use Gas for Aux heat mode. I just really shy away from trying to bypass anything which could screw up the programming. (Kind of like trying to check sprinkler timers, so many different ones out there) (\* we should probably not be bypassing and going into an expert or Diagnostic mode at the thermostat) I love the old double bulb mercury thermostats where you can easily see when it is operating in Heat-Pump versus Aux- Heat mode. ---
**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:** [December 12, 2021, 2:50pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/18 "2021-12-12T14:50:03Z")
Why are you listed as a non-member? ---
**Author:** ![mschneider5](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mschneider5/32/356101_2.png) [@mschneider5](https://forum.nachi.org/u/mschneider5)\ **Post date:** [December 12, 2021, 3:08pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/19 "2021-12-12T15:08:54Z")
> [@mbatson2](#): > > I never did turn on the emergency heat. > > When I got there the heat was already on…set to 60 > > I bumped it to 64 and nothing else… It was my understanding that setting a heatpump \>2 degrees higher than the ambient temp automatically kicks on the auxiliary heat to accommodate. Is that true? ---
**Author:** ![bcawhern1](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/bcawhern1/32/408713_2.png) [@bcawhern1](https://forum.nachi.org/u/bcawhern1)\ **Post date:** [December 12, 2021, 3:22pm UTC](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097/20 "2021-12-12T15:22:14Z")
> [@mschneider5](#): > > > 2 degrees higher than the ambient temp automatically kicks on the auxiliary heat to accommodate. This is my understanding, when there is an auxiliary (or emergency) heat setting on the thermostat, you must manually switch it over from heat-pump to auxiliary heat. This is because a heat-pump will be unable to produce effective heat on a really cold day (around 20 f or less?). And, not every heat-pump has auxiliary heat. This is often (in warmer climates) an added accessory. [Next page](https://forum.nachi.org/t/2014-lennox-heat-pump-puts-out-81-degrees-for-about-an-hour/208097.md?page=2)