insane bill with new heat pump system.. help please! setbacks, et
shabruo
12 years ago
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tigerdunes
12 years agoRelated Discussions
dual fuel heat pump vs standard gas furnace and ac systems
Comments (2)beth answers going down your list.... 1.length of life can vary depending on use, environment, yearly PMs, and quality of original install I personally believe 15 yrs min is a good target for good equipment and believe me there are some real junk HVAC on the market 2.you can not compare today's HPs against those 10 yrs and older. as different as night and day especially in the area of supply temp. Supply temp on a properly charged HP should easily be in low 90s depending on outside temperature. one reason I put in a dual fuel system was because while I liked the idea of operating savings of electric vs nat gas, I was somewhat skeptical of the acceptibility by myself and family as far as comfort. No problem. it is fine. In fact, I wish I had gone with an air handler rather than backup var speed furnace. This past season I used about 60 therms of nat gas for heating as the heat pump did the primary heating. 3.I really think you are confused on question 3. Temperature is temperature regardless of the speed it is delivered. On today's high eff furnaces that are two stg (newest mdls can have three stgs) models with var speed blowers, the heat that is delivered is what I call soft, quiet, gentile heat as opposed to the conventional furnaces that deliver very hot noisy heat. The temperature from the high eff var speed condensing furnaces while higher than today's high eff heat pumps is lower than the hot blast of non condensing furnaces. You may get some debate on this subject but based on my measurements that statement is correct. 4.There is no such thing as a dual fuel heat pump. A heat pump with backup furnace(as opposed to an air handler with heat strip backup) is called a dual fuel or hybrid application. The operating savings depends on the price of electricity and price of nat gas as well as the efficiency of equipment for a high eff heat pump and nat gas furnace. A heat pump provides AC just the same as an AC condenser. I believe I have given you the fuel comparison calculator in your previous thread which offers an accurate indication of possible savings. I really believe you are overthinking your situation. These are the minimum specs I would use for HP selection. 15 SEER, 12 EER, 9 HSPF full BTUs in both heating and cooling mode matching var speed air handler or var speed furnace scroll compressor preferred electronic demand defrost thermostat that controls blower speed like the HW VisionPro IAQ IMO...See MoreAdvice/Suggestions for replacing Heat Pump system
Comments (74)Hi TD.. Haven't been on the boards in a bit so I apologize for the late response. Everything is working perfectly since the tstat was replaced on the 12th. System was charged and turned on and the difference from the previous system is amazing. The temps in the house are much more consistent and the upstairs is actually warm now. I think the replaced ductwork has made a big difference. The air flow upstairs seems a bit high compared to the downstairs (than the old system) so Ive got it on my list of things to ask the dealer whether it can be adjusted. They did install dampers on all the supplies so I'm sure something can be done. I am glad I followed the advice of many here and got the VP IaQ. It's full featured and very easy to program. I've set the Aux heat to only come on if outside temps are below 35 degrees and it seems to be working well so far. Will be interesting to see my first full month electric bill for January usage so I can compare it to the old system. And regarding the VP IAQ, maybe someone can answer this question for me. Over the weekend I noticed that the touch panel/display of the IAQ is loose inside the plastic frame. That is, when I tap it to change settings, it will move about 1/8" in all directions. Is this normal or should it be securely attached within its plastic frame? I am completely satisfied with the system and the installation performed by the dealer. Many thanks to you and Ryan for all your help during this process. It is greatly appreciated. Happy Holidays!!! Regards, Rich...See MoreAdvice on replacing a 13 seer heat pump system
Comments (15)The Trane is an XR13 heat pump, 1.5 tons. The air handler match puts out 19,000 btu cooling (1000 btu more than a full 1.5 tons), 11 EER, 13 SEER, 16,500 btu heating at 47 degrees (1500 btu short of a full 1.5 tons), 7.7 HSPF, 16,500 btu heating at 17 degrees. This is Trane's basic heat pump. The Westinghouse model#s are bad/incomplete. They make an FT4BD condenser. There are digits missing in the model#s. I can't make anything out of the Armstrong air handler model#. The condenser is a 2 ton. You have quotes for a 1.5 ton and a 2 ton system. I need more info to compare the 3. Good luck....See MoreMy brand new second zone heat pump inefficient or?
Comments (2)jaganreddy you have provided a nice anecdotal story with very few facts. let's fill in the details. 1.your location 2.was a load calc performed for correct sizing and given to you in writing? 3.provide brand,mdl number, and size of both outside condenser and inside air handler for both upstairs and downstairs systems. how large an area for downstairs? 4.what size heat strip for HP system was installed? 5.what mdl thermostat? what is your usual thermostat setting, both AC and heating mode? thermostat is located on inside wall? 6.does your home have good new construction building/insulation qualities? 7.how many returns for upstairs system? 8.when you say "expensive electric bills", what amount and for what time period? how many KWHs burned? 9.have you eliminated the possibilty of another "appliance" malfunctioning? 10.what is the average winter temp for your area/location? 11.is your electric bill reasonable when operating two condensers in AC mode? 12.does your HP run continuously in heating mode? my first thought is that the backup electric heat strip may be operating when it shouldn't. if so, this could be an installation issue. have you called back GC or HVAC sub to discuss your concerns? Post back. This forum does want to help you. TD...See Moreblk94f150
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