Questions tagged [heat-pump]
The heat-pump is a type of central heating system that extracts heat from the outside, reversing the process used by a central air system.
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Heat pump not working after rain
A couple weeks ago, I had a Goodman 3 ton heat pump split system put in. At 5pm hours today, I was outside near the heat pump and noticed that it was functioning properly. At about 6pm, there was a ...
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2answers
2k views
What causes a heatpump to freeze?
A heatpump is used to cool a home in Florida. A relative noticed that the temperature was 90 degrees and that the evaporator (see photo) was sweating. She thinks she heard a piece of ice fall break ...
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1answer
45 views
No Hot water to Shower and Taps furthest away from hot water tank
I have this setup coming off of my hot water tank.
Recently I started getting only luke warm water to the taps and shower furthest away from the water heater(#9 & #10), also sometimes my cold ...
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2answers
51 views
Is it OK to stop the indoor blower during heat pump defrost on split-system heat pumps?
The traditional North American split system heat pump (ignoring "dual fuel" systems for now) relies on a backup heat source to provide both makeup heat during low-temperature (below the system balance ...
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1answer
43 views
Loud noise from outdoor unit several seconds after AC turns off
I haven't been able to find anyone online with quite this issue... I have a Carrier heat pump system, and through the winter it would often make that torpedo noise when heating the house (I later ...
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1answer
38 views
External Air Conditioner Condenser Capacitor replacement
I have a couple of questions about testing and replacing the capacitor on my home heat pump external condenser unit.
1. How can I reliably test the capacitor (what tools do I need?)
2. What safety ...
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1answer
39 views
Running AC/Heater when washing a cleanable filter
I have a heat pump/AC system with a washable air filter. I was told to clean the filter out and run water through it once a month.
He told me to let the filter dry for 3 hours before replacing it. I ...
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3answers
156 views
Is there such a thing as a DIY heat pump or mini split
I wanted to ask this question to the community.
Is there a legal way to install a mini split or heat pump without having an EPA license? I have seen similar questions asked several times or ...
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1answer
29 views
Mitsubishi Hyper Heat Models Capacity Weirdness
Why do some of the h2i models not have 100% capacity at 5 degrees like advertised.
These models, in fact, don't even list a 5 degree sizing, but drop off at their 17 degree like traditional heat pumps....
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1answer
37 views
What is the name for fixed metal venetian blinds?
I am about to build a canopy/enclosure for heat pump outdoor unit to protect it from strong wind and angle rain. It needs to cover the unit all around but still allow free air flow.
Ideally the walls ...
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0answers
72 views
Heat pump pool wiring
Wondering if anyone can help me here. I have a heat pump for my pool. It says min fuse/breaker 50amp and maximum 60amp.
So I have a couple options and questions I was hoping someone can help with.
...
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14 views
Do recirculation pumps work with water source heat pumps?
Our plumber has installed the recirculation pump but, when it is on we only have tepid water. When we unplug it we have hot water. Just wondering if recirculation pumps are meant to work with heat ...
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61 views
Fujitsu Halcyon: Custom Air-Filter (C.F.M.)
I'm trying to make airfilters to fit over my Fujitsu Halcyon Wall Mounted heating & air-conditioning split system. I'm talking about the indoor unit specifically. The wire mesh screens that come ...
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1answer
33 views
Heat Strip in Heat Pump
We had a/c here last week to fix a capacitor on our a/c unit and signed up for their maintenance program. They came today to clean everything and do checkup and said the heat strip in our heat pump ...
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0answers
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Manually Toggling Heatpump Reversing Valve to enable cooling
Background
A Radiothermostat CT80 fails to signal heatpump cooling, so jumpering the RED node with the GRN (Fan) and YEL (Cooling) node has successfully enabled cooling.
The weather became cold, ...
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1answer
36 views
Hook up new thermostat
Top brown picture is my old thermostat white is the new one , do I have it wired correct? On out side unit we have replaced motor, fuses, compassator ,cc contactor ,relay . We have a heat pump. But ...
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1answer
113 views
Direct Wiring (bypass thermostat) of heatpump cooling
Last September my CT80 radiothermostat would not signal cooling despite the measured temperature exceeding the temperature setpoint. It would be nice if a relative could manually switch the cooling ...
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2answers
92 views
Is HVAC device a heat pump?
A Florida HVAC device keeps a bank of storage units frosty in the summer time. A wifi thermostat is desired: a determination has to be made as to whether the device is a heat pump or not. The ...
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1answer
36 views
Will coefficient of performance rise in the future for heat pumps?
I can see there are heat pumps with x > 4.1 SCOP, which is great!
Q: But will this get better in the future? Ex. in 10 years? New type of heat-pumps?
Or are there any psyhical limitations, that ...
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1answer
33 views
Heatpump Wiring Color Convention
A heatpump thermostat is to be upgraded. I am unsure of:
Which color wire is the Common (thought to be BLUE)
Where should the brown wire be connected? (B node?)
Is the 'B' node in the photo ...
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2answers
269 views
If my heat pump does not have a neutral, do I still need a neutral wire?
I had a friend wire 10-3 line for a new heat pump. He connected the red and black conductor wires in the house to the 2-pole 60 amp breaker and the neutral white to the neutral bus bar. The outdoor ...
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4answers
107 views
Efficiency of a heat pump water heater during the winter
In my understanding, heat pump water heaters pump energy from the room around the water tank into the water.
Clearly, this must be energy efficient in the summer time, especially if I am using AC ...
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1answer
50 views
How can I deal with a heat pump condenser producing lots of water?
Heat pumps was replaced in 2017. North Florida has had moderately cool weather (50-60 degrees F) recently. I noticed water underneath one of the units.
Is the water pooling normal? If yes, why?
If ...
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1answer
21 views
Heat pump blower motor cycles on/off after running 140 seconds
Standard Trane split heat pump, condenser outside blower inside.
Usually the system will run normally but after 2 min 20 seconds the blower motor will cycle on and off randomly for 20 seconds. Then ...
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4answers
174 views
Best Way to Heat a Ductless Multi-Level Home
I just bought a home and it desperately needs an update to its heating. It currently has baseboard electric resistance heaters in every room. There is no duct-work in the house. We're in cold humid ...
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1answer
46 views
Why is my Heat Pump fan not turning in cold weather?
My heat comes on and you can hear the condenser unit come on as well. However the fan is not turning? The outside temp is 30 degrees? Is this normal?
Can anyone share some wisdom on this? Thank ...
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36 views
Heat pump can't get a zone to 72° F
I have a heating system with both a heat pump and a boiler. The rule for the system is that if the temperature in a zone is 5° F less than called for, then the boiler will come on, but otherwise the ...
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0answers
38 views
Dual energy controller 2AC02700701 runs heat pump with low fan only
I am running a central heat system that uses a heat pump as stage 1 and a gas furnace as stage 2. The thermostat is not directly connected to the furnace and heat pump motor, instead to goes through a ...
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2answers
78 views
Thermostat White-Rodgers 1F82-261 switches to stage 2 heat for no apparent reason
I am running a central heat system that uses a heat pump as stage 1 and a gas furnace as stage 2. The thermostat used is the White-Rodgers 1F82-261 which supports 2 stages of heat.
When using regular ...
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1answer
92 views
Carrier infinity 25vna heat pump utility curtailment
I have a newly installed infinity greenspeed hp system and the utility is trying to figure out how to control the outdoor unit in heating mode.
It's my understanding that the utility sends a signal ...
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1answer
36 views
AC \ Heatpump radiator corrosion
The example, from another posting, shows radiator corrosion. My heat pump's radiator is so corroded that it is unable to radiate heat and now the heat pump must be replaced. What preventative ...
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1answer
345 views
Generac Generator with Carrier Infinity Heat Pumps
I've signed a contract to install a Generac 22.5 kW whole house generator and transfer switch in our home outside Boston.
Our home has Carrier Infinity 3 ton heat pumps installed on the first and ...
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1answer
129 views
How can I tell if my new AC is overloading my home electric service?
I just installed a mini-split A/C system. It is 2 outdoor compressor units and 7 indoor head units. (I did 95% of the install myself, toot toot)
It was working great, but the weather had been ...
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1answer
90 views
Efficiency of having 2 heat pumps in my house
I have a 2 story house and I want to replace our old window AC. I was initially thinking of replacing it by a single heat pump unit, but in order to get government funding, I would need to get one ...
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1answer
54 views
Help wiring thermostat for heat pump
I'm replacing an old thermostat with a slightly newer thermostat. It's connected to a heat pump and the old wiring (picture attached) was:
White = W2
Yellow = Y
Brown = O/B
Red = R
Green = G
Blue = C
...
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0answers
416 views
How does one set the temperature threshold for heatpump? Carrier Infinity
I've just had a Carrier Infinity heat pump installed, with the matching smart thermostat. The only problem with it is that while it has three settings for the heat source:
Heat pump only
Electric ...
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1answer
196 views
Coleman 6230-901 outdoor unit fan running slow (and continuously)
I have an old rental mobile and the heat pump is operating normally, except the outdoor unit fan is running all the time (unless the breaker is off), and it runs very slowly. The run capacitor ...
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1answer
63 views
Heating the cold exhaust on heat pump
I'm honestly kinda surprised that nobody has tried that (at least, my Google Fu failed me in finding someone that did).
I just bought my first home and noticed something. My outdoor coil for my heat ...
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1answer
5k views
Honeywell RTH6500 WiFi Thermostat wiring questions for a heat pump
I'm trying to install a new Honeywell RTH6500 thermostat on an old heat pump system that has regular plus emergency heat and the closest matching diagram says to put both the white "W2" wire and black ...
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1answer
52 views
After market air filter replacment
I have a Lennox heat pump which has an air handler with a Lennox X7935 Carbon Clean Healthy Climate MERV 16 Filter installed. These filters are like $105 per at least. When we purchased this whole ...
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3answers
638 views
Why don't heat pumps run for a bit BEFORE starting the air circulation fan?
I'd like to think I understand how heat pumps work decently well. My home has one plus electric heat, which I try not to resort to because heat pump is more efficient, if slower.
When a traditional ...
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4answers
159 views
Will heat pump heat home faster than space heater?
I know that a heat pump is cheaper to operate than an electric space heater, but I'm wondering if a heat pump will heat our home faster than an electric space heater.
I'm asking because I have an ...
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1answer
71 views
Must a 4 ton variable speed air handler use a 4 ton heat pump?
This is an air conditioning question:
Must a 4 ton variable speed air handler use a 4 ton heat pump or can a 3.5 ton heat pump or smaller size heat pump be used instead?
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4answers
90 views
How to bypass this component to a Tetco Heat Pump
I have Tetco Heat Pump system that came with my house when it was purchased. About a year ago, I started hearing a water hammer in my pipes that I traced back to the solenoid(?) in the picture below. ...
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1answer
747 views
Air handler turns on even when set temp is reached
My HVAC is a heat pump system, the air handler inside is a Goodman aspf183016ea. The whole system/house is about 3 years old, and is all electric. I recently moved into the home and noticed that the ...
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1answer
81 views
Bosch Heat Pump + Hydronic Coil?
I was hoping to get some advice on the proper setup for this system. I live in Long Island, NY and just moved into a large house with an extremely old oil burner and 3 a/c condensers. I'm about to ...
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1answer
49 views
Is this humidifier properly installed?
Has anyone seen a humidifier installed this way: humidifier installed to side of air handling unit (hole drilled into side of AHU and discharging humidified air directly into the AHU). Always thought ...
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1answer
89 views
Is there any significant loss of cooling efficiency to wrap the both sunction line and liquid line together using one single insulator?
The installation of a split-type air-conditioner wraps both sunction line and liquid line together using one single insulation, instead of wraping each line separately. Is there any significant loss ...
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2answers
1k views
Should my a/c have some sort of a drip pan (photo)
I've got water (condensation) dripping from this "radiator" in my a/c.
It's slanted so MOST of the condensation drips along the radiator and into a drip pan.
I'm wondering if I just need to clean it ...
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2answers
103 views
How exactly do heat pumps work in a cold climate?
I don't really get how heat pumps work in a cold climate. In New England where I live, most energy is spent heating the house in the winter.
During the winter the outside is ALWAYS colder than the ...
