Our downstairs heat pump seems to be running a lot. When our room thermostat reads 70f the heat pump continues to run steady at 72f. If I set the pump temp to 74f it finally slows down. Doesn’t seem right. Any ideas? We own a 3br Cape

Paul

We’re headed out of town for the rest of the month of July to visit family down south. We live in the northeast US. Typically, we do these trips in the spring or fall and keep our heat pumps off while we’re away.
We have a Fujitsu Airstage system with one large unit in our downstairs and 3 small units for each of our upstairs bedrooms.
Downstairs is about 900 ft2 and upstairs is about 550 ft2.

We do live in a multifamily with extended family in a couple of the other units, so they could manually adjust things on the fly.

Thanks for any advice

It's me again, https://www.reddit.com/r/heatpumps/comments/1tombrq/humidity_spiking/

I'm located in Queens, NY, and we just experienced a pretty brutal heat wave, which is why I was able to troubleshoot as much as I have.

Now I have a better description of my issues with my 1st and 2nd floor mini splits. I sent this information to AI chatbots and I'd like to double-check their conclusions instead of blindly trusting them.

The following intake/exhaust temperatures were taken with a probe thermometer. The coil temperatures were taken with an IR thermometer. The line set temperatures were measured on the surface of a 6" section of exposed copper pipe with a FLIR camera. These temperature readings were taken after the system had been on for about an hour.

1st floor - taken around 1:20 PM @ 95°

All indoor units were set to 70°F/cool mode/auto fan speed. Around 10 minutes after I turned the indoor units on, I noticed that the kitchen and bedroom liquid lines frosted for about a minute, then thawed. They didn't refreeze for the 20 minutes I was outside. The living room liquid line set did not freeze.

Both Claude and Gemini agree that Fujitsu's liquid line sets are supposed to be colder than their gas line sets - exactly the opposite of my Mitsubishi (attic) system, which I currently don't have any problems with.

• Outdoor unit - Fujitsu AOU36RLXFZ - installed spring 2014
  • Intake temperature - 93.9°
  • Coil temperature - 104.9°
  • Exhaust temperature - 104.5°
  • Ambient temperature - 95°
• Kitchen - ASU12RLF
  • Intake - 81.6°
  • Coil - 57°
  • Exhaust - 68°
  • Liquid line set - 64.8°
  • Gas line set - 77.7°
• Bedroom - ASU7RLF
  • Intake - 80.4°
  • Coil - 60°
  • Exhaust - 72.6°
  • Liquid line set - 64.1°
  • Gas line set - 73°
• Living room - ASU18RLF
  • Intake - 82.2°
  • Coil - 82°
  • Exhaust - 80.9°
  • Liquid line set - 54.1°
  • Gas line set - 89.2°

Issue: Living room does not cool off. Claude and Gemini both think I need to replace the living room's EEV. I have not tested the EEV with a multimeter yet, I want to look up where it is in the outdoor condenser before I tinker around.

2nd floor - taken around 10:20 PM @ 85°

Around 10 minutes after I turned the indoor units on, I noticed that the 3x bedroom liquid lines frosted for about a minute, then thawed. They didn't refreeze for the 20 minutes I was outside. The family room liquid line set did not freeze.

• Outdoor unit - Fujitsu AOU36RLXFZU - originally installed spring 2014, replaced summer 2022 or 2023
  • Intake - 82.7°
  • Coil - 88.7°
  • Exhaust - 93.7°
  • Ambient - 85°
• Bedroom 2 - ASUH07LPAS - replaced summer 2022 or 2023 - set point 70°
  • Intake - 72.5°
  • Coil - 46.2°
  • Exhaust - 45.6°
  • Ambient - 75°
  • Liquid line set - 66.6°
  • Gas line set - 58.7
• Bedroom 1 - ASU7RLF - set point 68°
  • Intake - 70.5°
  • Coil - 47.4°
  • Exhaust - 51.8°
  • Ambient - 74.8°
  • Liquid line set - 65.2°
  • Gas line set - 74°
• Main bedroom - ASU9RLF - set point 68°
  • Intake - 80.4°
  • Coil - 60.6°
  • Exhaust - 69.8°
  • Ambient - 81.5°
  • Liquid line set - 63.9°
  • Gas line set - 76.7°
• Family room - ASU12RLF - set point 70°
  • Intake - 84.9°
  • Coil - 84.9°
  • Exhaust - 83.3°
  • Ambient - 82.2°
  • Liquid line - 58.6°
  • Gas line - 82.8°

Issue: Main bedroom takes FOREVER to cool off - sometimes it never reaches the set point, it'll be around 70° by 9 AM. I've noticed that I need to run all 4 indoor units in order to get all of the rooms to cool off. If I don't run the family room AC, the main bedroom almost immediately starts spitting out warmer air.

Claude thinks I need to replace the EEV for both the main bedroom ("partially open") and the family room ("fully closed").

Gemini insists that I'm low on refrigerant and that mini splits act weird (7k BTU units are given refrigerant first, then the main bedroom, and the family room is starved) when there's low charge. I disagree with Gemini, I've had low charge in the 2nd floor system before - none of the rooms cooled off when this happened.

I've been looking into replacing our VERY ancient and tiny water heater, and the idea of a water heater that also cools our enclosed back porch (where ours is located), is really cool.

However, the only threads I see are people complaining about them. My first inclination is to belief that most people talking about their experiences with a product are generally negative, so maybe this is the case here and that the brand and model is actually good?

If not, does anyone have another suggestion for such a water heater? I'd prefer to shop outside of the big box brand's "signature" (cheap) models; I've already learned about Lowe's lower quality versions of A.O. Smith heaters, so any advice on other brand's similar approach would be helpful.

Thank you!

Hello

I feel like I am getting the run around from several installers. I work in music and am currently building out a studio. I am looking for the quietest 18k unit for a 750 sq foot space, with a skylight, and some angled windows, very small. I live in Los Angeles, California, so it can get up to 95 in the summer. I am open to all suggestions based on previous experience preferred.

Thanks again reddit

I have narrowed down to this specific model for my 2300 sq feet home. Any reviews or feedback ?

This seems to be a Canada exclusive model. Says High-efficiency performance with up to 20 SEER and 10.5 HSPF
Cold climate operation with heating down to -30°C
Inverter-driven variable-speed technology for energy savings and comfort

Does this look right ?

2500 sqft house in NYC suburb. 25+ year old AC system so prepping myself for replacement soon.

I'm considering a central air source heat pump. Would want to keep my baseboard heating as a backup. What can I expect cost wise? How much would rebates contribute? Really have no baseline of what to expect so curious about people's experience and thoughts.

I'm very new to this community but I feel this might be the best place for some quality wisdom.

I recently put solar panels on my home, got PTO in March and it's been great ever since. Electric bill is typically no more than the monthly service charge from our poco. Our 2ton central air unit is working as it should right now but one day it won't and I'd like to go with a dual fuel heat pump when the time comes.

From what I've gathered, I'd like to go with an inverter based system (I really like the idea of the variable speed capabilities). I know there are a lot more variables when it comes to these complex pieces of tech though and that's where I get lost.

For context, I'm a new jersey licensed electrical contractor with 8 years experience in new construction, 4 years in solar and now I focus on residential service work.

I have an 8kw grid tied solar array with an 11.5kw SMA sunny boy smart energy so I can expand my solar production and add a battery in the future

My house is about 1800 ft², 2 stories, 3 bedroom, 2 bath, unfinished basement, brand new windows, 2x4 walls

ps we're also redoing the kitchen right now, I was planning on keeping the nest thermostat in the basement and using the remote sensor for the nest upstairs. but if that isn't a common solution for smart heat pump systems I would gladly run the required wiring up to the second floor now. iirc 18/6 is what I've seen but really unsure

It's time to swap my aging AC, looking at getting a heat pump. Any feedback / reviews on the Lennox SL22KLV-036-230 ? This is a 3 ton variable speed, dual stage. Since it's cold out here, looking to get the best I can.

House is 1800 sq ft and finished basement of 600 Sq ft.

Detached Home.

Anyone have any experience with ceiling units?

I know there is a built in condensate pump, but does anyone know if I need to buy a regular one that is stronger to force condensate out of attic into a drain?

I’ve heard of condensate pump failures

This is in a 3 BR (2nd flr) high ranch
Attic above bedrooms

5000sq ft home in Massachusetts,currently oil boiler and ac unit with 3 zones. One zone upstairs, finished basement and main level share a zone, but there is automatic damper to effectively make it 2 zones.

I'm reading about ducted systems not handling multiple zones well, but I'm not sure if it applies to what the setup would be for my home. They are suggesting two heat pumps that will utilize existing ducting and leave the oil as a supplemental heat source for colder days.

The oil boiler actually has about 5+ years left on it, it's the AC unit that is influencing the switch to heat pump now. Oil will continue to handle hot water until that dies.

Any feedback appreciated, especially around understanding if the multi zone situation is a issue for my setup and what it actually means. Bosch and Mitsubishi are the 2 options on the plate.

I have a 1,300 Sq foot manufactured home. We just got a new Moovair DMA24HOS20230E7 and the installer said it won't work with our Ecobee Premium thermostat. They installed a Honeywell Home FocusPRO N100, and I don't really love having to manually adjust it all the time. It would be great to find a mildly smart thermostat or just use the Ecobee I already have.

I'm having a hard time finding a definite answer online about getting the Ecobee to work. Will it work, and if so, will it make my system 2-stage instead of variable? If it won't work, what is a good, affordable recommendation?

Here's a link with pictures of the current setup and the old one I was using before the new heatpump.