How is the heat pump supposed to work?
How is the heat pump supposed to work?
Who would be the best next addition for the resurgent Browns? Hey, Tony!
We’d never take a holiday when it comes to emptying out the latest Browns mailbag — there’s just too many interesting questions.
1995 Jeep Wrangler with cooling issues?
I think my cooling issue relates to a bad fan clutch. However, I have a few questions as to how the fan and fan clutch work so I can narrow it down further and make sure I am fixing the appropriate part. My cooling system keeps the engine at the right temp for 20 minutes or so. However, when I idle to park, wait at a light, or in traffic it overheats slowly. This makes me think the coolant is not cooling fast enough in the radiator. Must be the fan or fan clutch right? The radiator, hoses, water pump, thermostat are all new. How does a mechanical fan work? Does it speed up and slow down to match the cooling needs of the engine? I don’t hear or see it cycle faster or slower as the engine heats up. It seems to spin at the same speed at all times. If it’s supposed to speed up as the engine warms up then I think I have found the problem.
Thanks for the help.
this could be a few different things but i don’t believe your mechanical fan is the issue. to answer your question about the speed the fan does not speed up depending on the cooling needs. what i believe to be your problem could be a plugged radiator. from your explanation above it seems as if the engine isnt receiving enough cooled water as it passes through the radiator. the cooling system is a very complex system to explain, however i hope that i helped you out
Filtrete 3M50 How to set the thermostat to work with non-heat pump systems
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April 16th, 2010 at 8:08 pm
Heat pumps are Air Conditioners. In the summer the unit evaporates freon in the coil above your furnace,cooling the house,. and the outside unit cools the freon and condenses the evaporated freon gas back into a liquid form. That’s why you feel heat from the outdoor unit in the summer and cool air indoors.
In heat pump mode the process is reversed, the outside unit acts as an evaporator coil and the indoor coil acts as a condensor coil.
So basically in the winter the unit draws as much heat from the ambient air as it can to transfer it into your house.
When the outdoor temp drops to a point where your heat pump just can’t draw any more heat from the air(right around freezing), a secondary heat source(usually electric heating coils) will kick in to satisfy the demand from your thermostat.
Has it been exceptionally cold lately?
If your heat pump can’t get anymore heat and you’re running primarly on the secondary heat, that would create the higher power consumption.
Could be that your coils just need a really good cleaning.
Or your unit is low on freon.
Good air flow to transfer heat is key to the effiency of a heat pump.
There are also a few other variables that could be the culprit.
Have a reputable HVAC company in your area clean & check your unit to keep it running at it’s most efficent.
April 16th, 2010 at 8:08 pm
You have either an Air Conditioner with heat strips, or a heat pump with heat strips. If it is a heat pump, the outside unit will come on. It will blow out really cold air, because it is transferring all the heat that it can get out of the cooler air. At some point, it cannot pull any more heat energy (I think at about 30 deg F) and so then only the heat strips work and the outside unit should shut off. Getting all the heat it can out of the air is less expensive than running the heat strips. They draw a lot of electricity to heat the house.
April 16th, 2010 at 8:08 pm
Major question that needs more info but I will start to answer. If your home has a heat pump the outdoor unit runs for heat pumps. The indoor electric heaters are supplementary for very cold days that the hp will not keep up. Heat pumps lose capacity very fast below temps of 30 and need the electric heaters as back up/ boost/ or supplementary. Lets assume you have regular a/c and heat. Non heat pump. The outdoor unit should not operate only in heat mode. If you have a non heat pump and the outdoor unit is running, you have a stuck contactor on the outdoor unit which will cause it to be stuck on even when the therostat is off. This would cuase high bills because you are heating with heat strips while the cooling is running too. Now lets say you have a heatpump with a higher than normal bill based on past bills when using heat. If the heat pump unit outside has a problem and the electric heaters are always running to keep the house warm, then that is the problem. Electric heaters pull up tp 80 amps. Heat pump only pull approx 20 amps. A heat pump that runs and depends on the electric heat elements at the same time pulls 100 amps. My point is, get a professional to check it out. OR, you can e-mail me. We will exchange there or make a call to each other and I will walk you through troubleshooting.
April 16th, 2010 at 8:08 pm
This is coming from just a "dumb" female…USE THE HEAT PUMP. A heat pump reverses the freon in the heat stage. We also have a 1999 Double Wide 25×80 and we used the furnace last month and our bill was $157.00. I called the Trane dealer we use to do business with when we had a house and he said the energy for the furnace was almost twice that of a heat pump. So I have switched the heater off and am using the heat pump. Unless it gets down to about 20 degrees or less use the heat pump. Saves more energy. If you have a heat pump there should be an emergency heat switch on your thermostat for the furnace and normal for the heat pump. Try using it when the outside temperature is 50 degrees and see if heat is coming out…Make sure you have the thermostat on heat. If no heat comes out and the outside unit is not running with it on heat you may not have a heat pump. You may just have an A/C unit outside and no heat pump. Your thermostat should show you what you have. If you have just the A/C then you can not get heat from it. You must use the furnace inside your home. Good Luck.
April 16th, 2010 at 8:08 pm
All of the above are correct. I have a heat pump and hate it. It doesn’t save me any money. I was told that when it gets below freezing to shut it down and run it on "emergency heat". This will prevent the outside unit from coming on. The blower runs forever and and blows out cold air long after the heating unit is off. I would never have another one installed.