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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Changing TCONT802AS32DAA Thermostats to Honeywell T9 on Trane System with Honeywell HZ432
I'm hoping someone can confirm the wiring I came up with for changing out the Trane thermostats with Honeywell.
System is 2-Stage Scroll HP with Honeywell TRUEZone HZ432. The diagram shows the ...
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AC Heatpump fails after cooling for few hours
I live in the lower Ohio area. I have a heatpump, Airtemp brand air conditioning system that's only 6 years old, on days that are in the mid to high 80s (or hotter) the system will run until about 2:...
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Best way to re-route the water from AC drip line
After the contractors installed the heat pump near my house, they pulled the drip line (that is connected to the condensate pump near the furnace) right next to the outdoor unit, which results in:
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Why do variable speed heat pumps need a proprietary (communicating) thermostat and why does mine not need one?
For DIY context: I recently got a heat pump installed; I know many things are not optimal (e.g. ductwork) and I am scoping what I want to fix/improve myself.
All offers I got for variable speed heat ...
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From heat load to CFM and where does 400/ton come from?
Based on this answer I have finally calculated my heating load of the total house as well as the distribution for individual ducts (rooms). Note that the formula for the heat loads was:
BTH/h = ∆T * ...
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Is heating load related to volume of area/surface?
I am working to improve distribution of my heating (ductwork). I found multiple sources to calculate the heating load (either per room or whole house):
Most of them use the volume (room area times ...
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How to do heat load calculations for distribution with common return and/or open floor concept
Many calculators (example) can obtain heating load or the whole house or of a single room with room based on area, room height and other factors (windows, insulation etc).
My 1927 home has existing ...
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Heat Pump on continuous duty or put in a rest period
I have some hybrid hot water tanks - heat pumps - that are running continuously as the demand is higher than the units can supply.
Would it be better to have a rest period baked into the schedule or ...
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What data is available to support decisions about thermostat set point with mini split heat exchangers?
I have seen tons of references that say that the best way to run a mini split heat pump is to set it to target temperature and to let it maintain that temperature all day long, not differentiating ...
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Rheem heat pump burping every minute
I have a Rheem heat pump that is making a grunt sound every minute, even after the thermostat is set to off. At the same time it makes a 5k watt spike. Here is a video of it making the sound: https://...
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Is high standby power consumption of heat pump water heater normal and how to reduce?
I recently got my very well working tankless gas water heater replaced by a Rheem ProTerra 50gal HPWH.
I feel the water heater consistently draws way too much power (I measure with CT clamps). ...
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Criteria for Energy Star energy estimates of heat pump water heater
Every heating appliance in the US features an "Energy Guide" label stating "typical" usage. In my case, the Heat Pump Water Heater states an estimated yearly energy use of 837kWh.
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Can I turn an old fridge into a water chiller?
I want to cool down water to near freezing (<40F or <5C). I have an old fridge that I don’t mind ripping apart. I was wondering about the feasibility of getting the cooling unit in the ...
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Will a frozen up Evaporator Coil in a heat pump cause the Air Handler Fan Motor to die? [closed]
My previous question was closed, saying it was opinion based, but it was not, so I'll ask again.
The fan motor in our air handler died and was replaced by an HVAC tech. That lasted 1 day, then the ...
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Heat Pumps that can add moisture to dry indoor air in winter
I heard that there are heat pumps in Germany that have the ability to add moisture to dry indoor air in winter. In Northern climates interior air tends to be far too dry, uncomfortable for skin etc.
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Is a 9000 BTU split heat pump oversized for cooling a 156 square feet room (Quebec climate)?
I want to cool a single bedroom during the sumer with a split heatpump.
I will only run it during the night, with door closed because I don't mind heat during the day, I just have a hard time sleeping ...
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Heat pump condensation line pump
I have a heat pump with backup gas furnace. There is a ¾” PVC pipe coming from the unit going into a non-submersible pump, and a barbed fitting with a roughly ¼” clear plastic tubing running from it.
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Converting heat pump thermostat to honeywell t9
I'm almost confident in installing new Honeywell T9 thermostat but niggling doubt.
I have two simple heat pump systems, each with own thermostat.
The original honeywell thermostat TH1210DH wiring
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Am I able to add a heat pump to this electrical sub panel?
The heat pump requires a 15A fuse/circuit breaker. I was told that it should work as long as there are 4 wires coming into the panel because that would make it 240V... 2 hot, 1 neutral, 1 ground. Mine ...
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pool heat pump wiring instructions DOEL 19000btu, 5.56 kw, 220v single phase
I am trying in install Doel UHP056CS, name tag says 220 volts, however it comes with a pigtail already wired with a standard 110v male cord.
Power Input label L, N, Ground, (three connectors)
Water ...
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Copper sweating to heat pump
Yesterday I got a brand new heat pump. Long story short, it was messy at best. In particular, the copper sweating attached to the condenser unit seems problematic in a couple of ways. First, copper ...
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Proper order of additional components?
I have this heat pump unit that has some features but unfortunately, some stuff in it is weak so the manufacturer's guide suggests I boost it a bit from the outside. Therefore I would like to add ...
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Heat pump for additional heating capacity in downstairs of house
My house (Portland, OR, 2900 sq ft) has central gas heating and central AC. The house was built in 2017 and is well insulated, but every winter we face an annoying problem: downstairs and upstairs ...
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Rheem Hybrid Water Heater: Does High Demand mode run the heat pump and electric heat simultaneously?
Model: Rheem 80 gallon electric model# model: XE80T10HD50U1.
I set my Rheem 80g to High Demand but can hear the fan/heat pump roaring. At High Demand, does Rheem sometime SIMULTANEOUSLY ACTIVATE the ...
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Plumbing/piping diagram symbol identification
I have this diagram schematic from the 50-page manual of the heat pump unit and there are symbols that are not explained anywhere in the documentation and I would like to understand them.
I tried to ...
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Non-return valve with hydraulic separator
To ensure one-directional flow on a closed loop in underfloor heating systems I believe I need to get some non-return valves. Currently, my issue is the exotic nature of the system where I need to ...
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Reduced ducted air flow with heat pump
This post is part of the research I did before installing a heat pump recently, which may help add context: Gas furnace switch to heat pump installation?
The heat pump I got installed is ...
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Expansion tank vs. safety valve position
I have this safety valve that comes with a non-return valve in it:
I'm wondering if the expansion tank should be installed in x1 or x2 point:
Also, should I get a safety valve with max. 8 bar, or ...
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Outside unit won’t work when inside blower fan spins correct way only when it is going wrong direction
I have a universal motor on my inside electrical unit. It runs but doesn’t have much air flow (like can barely feel anything even from the closest vent) so I swapped the direction wires and it gave me ...
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Bosch climate control 500 mini split. 2 heads in house 1 in basement. Can I power off head in basement when above freezing ty [closed]
Bosch climate 5000 series 2 heads in house 1 in basement. Can I power off the basement head when above freezing. It won't go bellow 60 degees
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Will my 125A electrical panel be sufficient for solar, heat pump, EV charger? [closed]
To my understanding, my main service panel is 125A with a breaker of 100A. My subpanel is 100A.
I'm in the design stage of installing solar but I'm planning later in the year to install a heat pump ...
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Expansion tank position within thermo-hydraulic separator system
Where should the expansion tank be installed? On the primary side or on the secondary side? Both sides perhaps?
x1 ?
x2 ?
x3 ?
or x4 ?
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Heat Pump only heating for a few mins
I have a heatpump that will only run for a few mins before shutting off, inside blower runs nonstop. Cycles on again in about 45-60mins.(vent blows out warm air the first few mins then room temp air ...
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Why does my heat pump quit in cold weather? Can I stop this?
I have a Panasonic heat pump that's about 11 years old. The indoor unit is an inverter R410a. When it gets colder than -20 C (-4 F) it starts making a chugging noise, then the power light starts ...
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Is a Cold Climate Heat Pump The Best Option to Replace Gas Furnace? [closed]
I live in the Canadian prairies (cold winter -30C or below possible, hot summer +30C or above possible). I recently purchased an AC unit and have had it installed. Recently, my circuit board on my gas ...
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Choosing between hybrid and all-electric heatpump system
I live in Scotland, in an ordinary 25-year-old detached house with reasonable insulation. I have been getting quotes for heat pump installation to take advantage of the funding that is currently ...
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How to wire relay for heat-pump/boiler with backup heater
I have two heat-pumps controlled by a tekmar 262 boiler control. The heat pumps heat water in a storage tank, which is then circulated through the house. The storage tank is designed for hydronic ...
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Understanding heatflow, minisplit vs. open stairwell
Still getting used to the minisplit heat-pump HVAC (well, HAC) system I put in a few years ago, along with improving the house's insulation.
One of the differences I'm noticing from when I was heating ...
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Does it require separate condensing units to allow for different rooms to remote control HVAC temperature?
If I want to have a system where one bedroom is blowing hot and another is blowing cold air through remote controlled internal units, do I need multiple outdoor units and ducts?
Imagine you had a ...
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How does a Teckmar 262 boiler control determine the anti-short-cycle minimum boiler run time?
I have a ground source heat pump (econar 5T unit) being driven by a Tekmar 262 boiler control. The heat pump has anti-short-cycling protection built in; if the heat pump demand signal is turned off ...
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Heat pump not blowing warm air when on heat - puzzling behavior
Config:
Ecobee thermostat
Lennox setup (furnace, heat pump, indoor coils)
Installed for ~6-7 months now
Problem:
Setting the Ecobee to Heat for 66F (not aux - just using the heat pump) turns on the ...
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How do you read this hydrometer?
I have a ground source heat pump with methanol antifreeze in the ground loop; and a hydrometer which is supposed to read methanol or ethylene-glycol solutions (at the time, I couldn't find one with ...
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Gas furnace switch to heat pump installation?
I currently have a gas furnace/AC combo, but would eventually like to replace the entire system with an air source heat pump. I imagine this won't be a small or simple project, so I'm curious what all ...
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Does Lennox not allow users to buy parts directly?
I have a heat pump XP15-030-230-04 which is not defrosting. Opening the panel did I find DS1 and DS1 leds fast flashing alternatively which as per their manual is a fault with the Coil Sensor. I ...
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HVAC air filter replacement interval in hours?
My condo has a central heat pump AC/heater system that takes a 20x30x1 air filter. My area is a very mild climate and the HVAC system rarely gets run.
Checking my usage data over the past 12 months, ...
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Heat pump air handler popping, clicking, hissing
We got a ductless heat pump system installed in the spring -- a four-zone ourdoor unit and four separate air handlers in different rooms in the house, all Mitsubishi.
We didn't notice any problems ...
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Clocks Running Fast and lights flickering after new heat pump installed
My old heat pump packed in and a hew one was installed last week.
Ever since i’ve noticed the oven clock is running fast, gaining up to an hour a day and lights have a constant flicker.
We had moved ...
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LED lights constantly flicker when heat pump is running
A few months ago we had our gas furnace replaced with an air source heat pump, using our existing ducts in our single level 3 bedroom house. As part of this update our electrical service was upgraded ...
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What is my heat pump doing, that uses so much electricity in such an erratic way?
TL;DR: I'm currently in a fight with my heat pump, as its energy consumption seems way out of line. I want to know what it is doing, that is causing it to use so much electricity even when the outside ...
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Overlapping HVAC
I had about a 1,500sq ft single level ranch style home. A few years ago I added on a master suite and a family room, so now about 2100sqft.
The family room has a large pass-through to the rest of the ...
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