Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Would this unit work for multiple zones?
Document: This was not so. After a frustrating 30-45 mins minutes, I ended up having to go up to our hot attic and having to remove panels on our A/C unit in order to wire the common to the circuit up there. Thankfully, all the wires already ran from the unit to the wall downstairs so I did not have to send new wire from the attic. After about an hour of heavy sweat, I was able to claim success. So, lesson learned.
If power is lost, settings are retained. When wiring, make sure to take a picture of the terminal block on the furnace so that you match up the correct wires on the stat. The lettering (R,G,C,W1,W2,Y1,Y2,K) is standard, but colors are not.The iPhone app is nice, easy to set a temporary setting with a specific expiration time. The unit won't connect to your phone directly.
The 24v common wire is generally available in the bundle of wires going to most thermostats. You may need to connect the open end to your furnace control box. This was pretty straightforward. I connected this thermostat to a 30 year-old heat/ A/C unit. It took me about 1 hour to complete the install and connect the thermostat to my Wi-Fi router. Has been working great for 6 months. I believe this product to be a great value for the quality and features.
In the past it would have taken hours to cool down.
The only consolation is that I was unable to find better for less than $400. I would have considered that other thermostat if I had reasonable expectation that they would be around in a year, and they weren't so "boutiquey", and if the price tag was more reasonable!Despite the negatives, Honeywell has been making thermostats far longer than I've been alive! That earns them enough trust that they win my business.
No more forgetting to set it when going on trips!Cons:Installation guide is not as clear. I would have expected a simple diagram or two.I am no professional when it comes to HVAC equipment but I do hold an engineering degree...let's just say that this thermostat is not very "average-user" friendly when it comes to the install.Also, don't make the same mistake I made!
Instead of selecting times when the setpoint changes (wake, return), just set the actual times of when you wake up and plan to return, and the stat will attempt to get to the setpoint by that time.For 2 stage heat/cooling you need 7 wires (2 for heat, 2 for cooling, 1 for fan, 1 24V hot, and a common ground). Unlike other stats, it has no batteries (they would be dead too fast powering the WiFi).
The thermostat *REQUIRES* both sides of the transformer, that means 3 wires *minimum*! Honeywell calls it the "common wire" in HVAC jargon. Because it's meant to be "professionally installed" the manual includes 14 different pictures! If a professional wrote the book, ONE single diagram would have conveyed more info!It took 3 calls to actually confirm the futility of calling -- my first call was routed after several automated prompts to a 3rd-world representative.
I would highly recommend this as it was easy to install and the time settings and temp controls are so awesome I figure they will pay for itself rather quickly with the energy savings.We live in Tampa, FL and the temps are still in the low 90s. We took a weeks vacation, turned the A/C up to 85.When our flight was getting ready to takeoff heading home I pulled up the App on my phone, released the hold and it automatically goes back to your set schedule.
I really enjoy being able to remotely control my thermostat from my iPhone or iPad. Coming back home after a weekend away, I can turn on the A/C and have the house cooled down by the time I arrive. Doing the same with heat in the winter will also be nice. Installation was pretty straightforward. I did have to add a 24VAC common but in my case the calbe already in place between the thermostat and furnace had multiple spare wires already there. It has worked flawlessly since installed.
Answer: no