Carrier Greenspeed 25VNA Heat Pump Electricity Usage in Cold Area
Sabs83
11 years ago
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tigerdunes
11 years agofsq4cw
11 years agoRelated Discussions
Looking for Carrier Greenspeed 25 VNA Heat Pump Experiences
Comments (13)For Rayball Obviously, you were not paying attention to my posts and recommendation. The main purpose of the Greenspeed is the low temp feature and the HSPF heating efficiency. That's what you are paying for. While the 003 air handler is an AHRI Directory match, it is not the best match as far as HSPF. There is a significant difference from a 10.5 HSPF to a 12-13 HSPF. See below for comparison. I posted same on July 4th.. 4616892 Active Systems CARRIER AIR CONDITIONING INFINITY SERIES HP WITH GREENSPEED INTELLIGENCE CARRIER AIR CONDITIONING 25VNA036A**30 FE4AN(B,F)003+UI 1200 875 705 33400 13.00 19.00 35600 10.50 29200 1 HRCU-A-CB 218 662 Yes 7021746 Active Systems CARRIER AIR CONDITIONING INFINITY SERIES HP WITH GREENSPEED INTELLIGENCE CARRIER AIR CONDITIONING 25VNA036A**30 FE4AN(B,F)003L+UI 1200 875 705 33400 13.00 19.00 35600 10.50 29200 1 HRCU-A-CB 218 662 Yes 4616934 Active Systems CARRIER AIR CONDITIONING INFINITY SERIES HP WITH GREENSPEED INTELLIGENCE CARRIER AIR CONDITIONING 25VNA036A**30 FE4AN(B,F)005+UI 1200 875 705 35000 14.00 20.00 33400 12.00 31000 1 HRCU-A-CB 217 579 Yes 6938465 Active Systems CARRIER AIR CONDITIONING INFINITY SERIES HP WITH GREENSPEED INTELLIGENCE CARRIER AIR CONDITIONING 25VNA036A**30 FE4AN(B,F)005L+UI 1200 875 705 35000 14.00 20.00 33400 12.00 31000 1 HRCU-A-CB 217 579 Yes 4539517 Active Systems CARRIER AIR CONDITIONING INFINITY 20 HP WITH GREENSPEED INTELLIGENCE CARRIER AIR CONDITIONING 25VNA036A**30 FE4ANB006+UI 1200 875 650 35000 14.50 20.50 33400 13.00 31600 1 HRCU-A-CB 212 535 Yes 7017320 Active Systems CARRIER AIR CONDITIONING INFINITY 20 HP WITH GREENSPEED INTELLIGENCE CARRIER AIR CONDITIONING 25VNA036A**30 FE4ANB006L+UI 1200 875 650 35000 14.50 20.50 33400 13.00 31600 1 HRCU-A-CB Yes 212 535 Yes You will need to decide whether it is worth changing the air handlers out from the 003 to 005-006. Probably not but plan on higher operating costs in the winter. The 2 areas that take a hit are the cooling BTUs and the HSPF heating efficiency. Dealer should be able to give you some est operating cost differences. IMO This post was edited by tigerdunes on Mon, Aug 4, 14 at 6:03...See MoreCarrier Greenspeed 25VNA Heat Pump
Comments (10)I have seen a presentation with data collected for the Greenspeed Infinity heat pump. It's quite impressive to say the least. It includes the electrical bill and consumption for a home that has had it installed for 1-winter as follows. Size of the system was not mentioned oddly enough. I would assume it is a 2-ton system. Aug. 25, 2010 to May 11, 2011, 269-days, 8,370kWh @ 8.34cents/kWh = $698 w/Tx - TOTAL, heating, lights, hot water etc included. This was for a 950sq ft (very small!) bungalow built in 1969 with 2-occupants. It is located north of Montreal where heating is required for 70% of the year. Our winters are COLD! Below 0 degrees F is not uncommon. We have over 400-hrs/yr of below 0 degrees F temperatures in our region and even more so where this home is located, according to regional BIN data. According to Carrier, the balance point for a 3-ton Greenspeed (this sounds small to me) installed in a 3000sq ft cottage is about 5 degrees F. For the Canadian winter climate Greenspeed is rated at 44% more efficient than the Mitsubishi Zuba. In cooling mode it's rated at 27% more efficient than the Zuba. Rating (on this slide) was by ecoENERGY, which is a Canadian federal government agency. The data collected in the presentation got quite interesting when the cost of oil heating was compared with geothermal, 2-stage Infinity and Infinity Greenspeed. Greenspeed was 5% less efficient than geothermal, but 12% more efficient than the Infinity 2-stage and 79% more efficient than an oil furnace (efficiency not mentioned). When compared to an all electric system, Greenspeed was 8% less efficient than geothermal but 20% more efficient than the 2-speed Infinity heat pump and 66% more efficient than an electric furnace with no HP. These last 2-senarios (oil & electric furnaces) were represented in dollars only. The 25-slide presentation contained 23-slides of graphs charts & tables. It was prepared by Carrier Canada and was in French only, however 1-slide comparing the Infinity Greenspeed to the Mitsubishi Zuba with all technical data was referenced to the American Heating and Refrigeration Institute (AHRI) so that there should be credibility in the numbers. Hope this helps... SR...See MoreCarrier Greenspeed 25VNA Massachusetts Cold Weather Data
Comments (32)I have a 25VNA048 for a 2900 square feet house (basement excluded as usal). This new unit makes so much noise in cold temperatures that I just, 2 days ago, clipped the max rpm from 7000 to the minimum 4xxx. Last night and today is again a 5F type weather here and the system still keeps up with a 74F setup inside. Lowering the RPM lowers the heat output of the HP but even then it is good enough except for noise which is a bit more tolerable but not a success. I have removed the HP lockout below x following a recommandation of someone else on this site but kept the above 5F lockout for electric heat. This last one makes a huge difference on the average daily energy use but makes the system slower to respond to an Inside temperature increase in the morning for exemple. So Elena, not sure I understand why other distributors are saying not to ask toooo much from the 25VNA. Efficiency is definetly not a problem in my case (but noise is!). I was surprised to find out that the electric heat lockout does not go below 5F, I would have tested the HP system even below, altough I would have probably awaken the whole street. Just to let all know, I bought a new Carrier system with eyes nearly closed because my previous Carrier system gave me about 16 years of confort without a single real service call in the same house and I went for an entirely new Carrier because of energy efficiency. Should have opened my eyes.... Thank you all for your input, it helps circling the problem....See Morecarrier infinity greenspeed heatpump
Comments (40)Ok, I am sorry for bugging yall again... but I do appreciate you all helping me. I have been thinking. How does this sound, and tell me please if I need something else? I am going to ask for the Infinity Gas furnace- and matching control (thermostat?) as I said, I really don't even know what to ask for but in doing research and carrier left me a brochure I was reading through it, and see some nice reviews about it. For now I am not concerned about a heat pump, or even an air conditioner. However, is there a such thing as an air conditioner that matches the infinity gas furnace? Please, I know yall base answers on best product for least amount of $, however, I have only one shot to get the funds for this furnace. and I want the best. the best because I know it will last me a long time. I do not care about bells and whistles, No. I just want the best. and as before, tere will have to be new ducts, vents, and anything else that goes with a new system. Is one stage better than 2 stage? what is variable speed? what is a box filter? what is a condensing fan? please, please help me figure this one out, so at least I will know some of what I am asking for and not just accepting what they are telling me? and what seer? of furnace should I ask for or need? thank you in advance. I am sorry for being a bugger....See MoreSabs83
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