Heatpump Single Stage vs Two Stage
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2 years ago
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single-stage VS two-stage furnace for a house with basement
Comments (1)Its a matter of comfort, not efficiency. The two stage will cycle fewer times and maintain a more even temperature with smaller swings. The variable speed blower will be much less obtrusive in its on/off cycles, ramping up to its run speed and ramping back down. Easier to adjust to the correct CFM for a specific installation as well. The Trane and American Standard furnace/AC are generally the same as are from the same manufacturer although each has some models the other does not. Our AS unit with 2 stage furnace, 2 stage AC and variable speed blower has worked well and uses considerably less electricity than the 10 year old Bryant on the other half of our home....See MoreTrane or Amana; Single stage vs 2 stage
Comments (3)Is the trane single speed or two speed? If it is single speed, and the price isn't that much different, go with Amana If the trane is two speed, and the price isn't that much different, go with trane. Trane is a high end unit, but two speed is alot better than single speed as far as efficiency....See More13 seer single stage vs 15 seer 2-stage?
Comments (1)If your not replacing your indoor unit, getting the 2-stage outdoor unit won't provide any savings since the furnace won't be able to switch to lower fan speed for the lower of the 2 stages of the outdoor unit. I would go with the 14/15 seer single stage outdoor unit with new coil with txv if your not replacing indoor unit. Your new a/c will be a heatpump right? What part of the country are you in and what is the electricity rate?...See MoreFurnaces: single stage vs 2 stage vs modulating
Comments (16)Quote: My experience is that the effect of warm air rising and cold air sinking tends to mess with the effect of the multiple zones. In the summer time the upstairs thermostat calls for cooling while the downstairs thermostat does not but because the cold air sinks the basement and first floor stay cooler than the second floor. End Quote. It will to one degree or another, however a zone system is designed to 'minimize' this problem by controls that direct the cooling or heating to where you want it. Naturally the upper levels of the home will call for cooling more frequently than lower levels. Zoning isn't entirely perfect, in many cases it depends on the home layout. If you have a home that is more 'open' you will get bleed thru from one zone to another. But what difference does it make if you have better control? Assuming of course the zone system is installed properly... many times they are not. The best control of a zone is a zone in which there are 4 walls and a door and preferably there is a return as well as supply duct(s) within that zone. On a multiple level home that is zoned the equation changes some what in that each level of the home is typically a zone. Sure the bottom levels of the home will be cooler than the top level (second floor). The idea in zoning the AC to the basement is to 'limit' the amount of cooling it receives... otherwise the complaint is always the 1st level is too warm and the basement is too cool. Zoning is merely to give you better control and reduce complaints. The other thing that you may not realize is that zoning has the capability to cool one area while heating another area. Not at the same time of course with one HVAC system, but it can vary the cycles. It's all about comfort and control when it comes to zoning. (Think of a yuppie 3 level home with only 1 HVAC system.) Without zoning can you imagine the fights of the lower level of a 3 story home with 1 HVAC system in fall and spring seasons with someone who is on the 3rd level? Savings can be achieved by only cooling or heating areas of the home that need it....See MoreCoolAir Inc.
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