2 stage AC with Single Stage Variable Furnace
matt t
2 years ago
last modified: 2 years ago
Featured Answer
Sort by:Oldest
Comments (21)
Related Discussions
Controlling a Single Stage AC with a 2 Stage Thermostat
Comments (1)I think you can. Connect the AC to the Y2 connection and change the swing setting to 0.4 degrees. The second stage AC (Y2) will activate at twice the swing setting which would be 0.8 degrees. If the set point is 75 degrees, then the AC will turn on at 75.8 degrees, and turn off at 74.2 degrees....See More2 stage variable speed furnace vs. single stage furnace
Comments (3)Location?...post Mdl numbers...there are 2 major difference between the furnaces...2 stage high eff heat exchanger and the var speed blower motor...I am unaware of any measurable reliability of one furnace over another. I do recommend st steel heat exchanger on both.... While blower motors are very reliable with few failures, the var speed blower mtr model is quite expensive to replace. Just so you know, you can get a 2 stage high eff furnace with fixed speed ECM blower motor, ie not var speed. IMO...See MoreDo I need a two-stage AC unit to go with a new 2 stage furnace?
Comments (4)I am in South FL, so no need of a furnace here, but did replace my AC four years ago. Everyone I talked with said that more stages the better. A single stage is just on at full speed and then off. A 2 stage is either on at full speed or a lower speed (usually 50-70%). Carrier also makes a 5 stage (24vna9) and a fully multi-stage Greenspeed that has unlimited stages. I opted for the Carrier 5 stage. It was more than a 2 stage unit, but a few thousand less than the Greenspeed model. If I turn the temp down, it will come on at stage 5 to get the house to that temp, then will regulate that temp using the lower stages (usually stage 1-3). This also keeps the inside humidity between 50-60% which is far better than the 90% outside humidity nwe get in the summer months....See MoreWill single stage AC benefit with variable speed 2 stage furnace?
Comments (19)Your first answer confirmed that the extra run time on AC does provide some additional dehumidification but now you say it is a "gimmick" that I "fell for". Only with a 2 speed air conditioner. BUT it's still mostly a gimmick. WHY? a 2 speed air conditioner's first stage (most brands) is approximately 70% of capacity of the machine. It is more or less in dehumidification mode when the unit runs in 1st speed. (It must be a 2 speed AC condenser.) However, 1st speed turn on is not determined by humidity it is determined by temperature. Do you see the problem with that? The kick to 2nd stage is often times determined by time. Usually in the realm of 8 to 10 minutes or the temperature difference from set point to current temp of the structure (usually greater than 3 degree difference will initiate stage 2 within a few minutes). Humidity again plays no importance / no determination from ramp up or down --- it's all decided around temperature set points. How about now? Do you see a problem with that? So when in cooler seasonal temps --- the system will nearly always over cool... very much like a single stage air conditioner does all the time. PS: I'm not angry. But you should be for being 'duped', by the super slick advertising nonsense of the HVAC manufacturers. If I was angry why would I then turned around and explain things to you further so you understand the point being made here? What does 'SERVICE' mean to you? This is a service business, you will ALWAYS need service... better hope it's the kind you really want. I service the Katy, Texas area....See Morematt t
2 years agomatt t
2 years agolast modified: 2 years agoCharles Ross Homes
2 years agoCharles Ross Homes
2 years agolast modified: 2 years agoAustin Air Companie
2 years agosktn77a
2 years agolast modified: 2 years agokevin9408
2 years agoElmer J Fudd
2 years agolast modified: 2 years agosktn77a
2 years agoElmer J Fudd
2 years agolast modified: 2 years agoAustin Air Companie
2 years agoElmer J Fudd
2 years agolast modified: 2 years agosktn77a
2 years agolast modified: 2 years agoElmer J Fudd
2 years agolast modified: 2 years ago
Related Stories
SELLING YOUR HOUSEHome Staging to Sell: The Latest Techniques That Really Work
Get up to speed on the best ways to appeal to potential buyers through accessories, furniture, colors and more
Full StoryMOST POPULARCrowd-Pleasing Paint Colors for Staging Your Home
Ignore the instinct to go with white. These colors can show your house in the best possible light
Full StorySELLING YOUR HOUSEHow to Stage Your Kitchen for a Home Sale
Attract buyers with a kitchen that’s clean, bright and welcoming — no expensive overhaul required
Full StoryKITCHEN DESIGNA Single-Wall Kitchen May Be the Single Best Choice
Are your kitchen walls just getting in the way? See how these one-wall kitchens boost efficiency, share light and look amazing
Full StorySELLING YOUR HOUSEA Moving Diary: Lessons From Selling My Home
After 79 days of home cleaning, staging and — at last — selling, a mom comes away with a top must-do for her next abode
Full StorySELLING YOUR HOUSEThe Case for Hiring a Home Stager When You’re Selling
This pro can help your home look its best — potentially resulting in a faster sale with more profit
Full StoryDESIGN PRACTICEDesign Practice: How to Pick the Right Drawing Software
Learn about 2D and 3D drawing tools, including pros, cons and pricing — and what to do if you’re on the fence
Full StoryHOUZZ TOURSHouzz Tour: Visit a Forward Thinking Family Complex
Four planned structures on a double lot smartly make room for the whole family or future renters
Full StoryGARDENING GUIDESSweet Serendipity: Opening to Happy Garden Discoveries
Unplanned nature scenes can be unbelievably beautiful; you just need to know how to look
Full StoryCEILINGSIn the Rotation: Ceiling Fans Go Chic
Who Knew Ceiling Fans Could be Lust-Worthy? Here's How to Stay Cool in Style
Full Story
sktn77a