Hi.
A few days ago I got my old 80% gas furnace replaced with Mitsubishi Hyper heat system: PVA-A42AA7 ducted air handler and PUZ-HA42NKA1 outdoor unit, no heat strips, MHK2 thermostat. It doesn't seem to heat all that well and I'm wondering if the performance I'm getting is normal for that type of system and outside conditions or something is wrong. I would greatly appreciate any advice.
I'm in Washington state, the house is 2660 square feet two floor building built in 2007.
Here are some observations I made. On the day of the install while they were putting the system together indoor temperature got down to 65f. After everything was installed it took 5 hours of non stop operation (there may have been defrost cycles) at max speed to bring temperature to 70f with outside around 32f (target set to 72f)
In the morning I asked installer about that, but they said the house was code and it's normal for "low heat" systems to spend some time for initial heating. Called Mitsubishi and they told that it's normal if target temperature is just couple of degrees from current.
So with indoor temperature already at 70f I set target to 75f. It took 11 hours to get there. While outdoor temperature started at 30f in the morning, got to 50f during the day, and back down to 39f when indoor finally reached 75f.
Duct air temperature I'm getting is more or less consistent around 85f.
Another contractor in the area confirmed this is not normal. I'll be calling other contractors will try to get them to come over and take a look and will try again with Mitsubishi tomorrow. But I'd also greatly appreciate any advice on the matter.
A few days ago I got my old 80% gas furnace replaced with Mitsubishi Hyper heat system: PVA-A42AA7 ducted air handler and PUZ-HA42NKA1 outdoor unit, no heat strips, MHK2 thermostat. It doesn't seem to heat all that well and I'm wondering if the performance I'm getting is normal for that type of system and outside conditions or something is wrong. I would greatly appreciate any advice.
I'm in Washington state, the house is 2660 square feet two floor building built in 2007.
Here are some observations I made. On the day of the install while they were putting the system together indoor temperature got down to 65f. After everything was installed it took 5 hours of non stop operation (there may have been defrost cycles) at max speed to bring temperature to 70f with outside around 32f (target set to 72f)
In the morning I asked installer about that, but they said the house was code and it's normal for "low heat" systems to spend some time for initial heating. Called Mitsubishi and they told that it's normal if target temperature is just couple of degrees from current.
So with indoor temperature already at 70f I set target to 75f. It took 11 hours to get there. While outdoor temperature started at 30f in the morning, got to 50f during the day, and back down to 39f when indoor finally reached 75f.
Duct air temperature I'm getting is more or less consistent around 85f.
Another contractor in the area confirmed this is not normal. I'll be calling other contractors will try to get them to come over and take a look and will try again with Mitsubishi tomorrow. But I'd also greatly appreciate any advice on the matter.
source https://hvac-talk.com/vbb/threads/2235964-Unsure-about-performance-I-m-getting-from-recently-installed-Hyper-Heat-system?goto=newpost
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