HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Connect one-on-one with {0} who will answer your question

Related HVAC Questions
Getting no power error to nest thermostat....have turn off
getting no power error to nest thermostat....have turn off and switched wire connections...should i be concerned it's my HVAC unit? … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,554 satisfied customers
My upstairs nest is not charging the battery. I have 2 zones
My upstairs nest is not charging the battery. I have 2 zones for heat. Downstairs nest controls heat only. Upstairs controls all cooling and upstairs heat. Rh has 24v, Rc only has 12v. Also, G, Y1, an… read more
Tamar D
Tamar D
HVAC Mechanic II / Service Tech
2,626 satisfied customers
I'm getting the nest.com/e24 error ( no power to Rh wire
I'm getting the nest.com/e24 error ( no power to Rh wire detected ).But with my multimeter, I measure 24-volts-ac between the Rh and C wires, which I think is what it should be.The condensate-pan unde… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,460 satisfied customers
I replaced the batteries in my thermostat, now I can't get
I replaced the batteries in my thermostat, now I can't get the AC to turn back on. I have checked the breaker, nothing is tripped. The batteries were brand new, and it is registering the temperature, … read more
Phil
Phil
Consultant to Engrs, Govt & Contractors
Degree, Mech Engr Technology
11,078 satisfied customers
I am trying to install a NEST 3rd generation. On the old
Hello, I am trying to install a NEST 3rd generation. On the old thermostat, the wiring is Red -> Rc, W -> White, Yellow -> Y1, and Green -> G. There is an extra blue wiring and I checked m… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,980 satisfied customers
I think I may have a bad nest out of the box. They are
I think I may have a bad nest out of the box. They are sending me a new one after going through hours of support. But maybe you guys will know something more. … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,460 satisfied customers
Just installed two nest thermostats. one works great but one
just installed two nest thermostats. one works great but one gets a e74 error and says no power. Tried Rc and Rh as well as with and without C … read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,029 satisfied customers
I have recently purchased a nest 3 and installed it. It
HI . I have recently purchased a nest 3 and installed it. It keeps working intermittently. basically, it first shows the following message: the power from your equipment to the thermostate may be off'… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,554 satisfied customers
I have a gas furnace, and just installed nest gen1. The wire
I have a gas furnace, and just installed nest gen1. The wire seems all good connected to Rh, W1, Y1, G, C. on the Furnace side there is R, Y, G, W, C also, all connected. The fan control is fine turni… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,460 satisfied customers
I need to troubleshoot an L8148E Aquastat on a gas boiler
I need to troubleshoot an L8148E Aquastat on a gas boiler that is clicking when the boiler is dormant as well as the flue damper continuously rotates.… read more
Rick
Rick
Supervisor
30,399 satisfied customers
Tried installing nest. Did not work rewired old unit back in
Tried installing nest. Did not work rewired old unit back in and now nothing works. I took a pic of wire before I started. … read more
Phil
Phil
Consultant to Engrs, Govt & Contractors
Degree, Mech Engr Technology
11,078 satisfied customers
I have a 3-ton model ESP-D Spacepak in a vintage condo.
Hi. I have a 3-ton model ESP-D Spacepak in a vintage condo. Heating is provided via steam heat and is controlled universally by the building. The thermostat is used for cooling only and I have a Nest … read more
Appliance Guru
Appliance Guru
22,241 satisfied customers
I have a Trane XR15 and a Nest learning thermostat - dual fuel
I have a Trane XR15 and a Nest learning thermostat - dual fuel system with a gas furnace. My system has run flawlessly years. Filters are clean. However yesterday the heat just kept running and I can'… read more
Comfort Specialist
Comfort Specialist
Licensee, Designer & Estimator
Vocational, Technical or Trade School
1,369 satisfied customers
Im trying to replace a honeywell CT3500/CT3595 with a Nest
I'm trying to replace a honeywell CT3500/CT3595 with a Nest Thermostat and getting an error that there is no power to my Rc wire. It appears all the wires are connected properly, but honestly I am not… read more
Appliance Guru
Appliance Guru
22,241 satisfied customers
we have the nest. been installed and operating fine for almost
we have the nest. been installed and operating fine for almost a year. Got the recent update. woke up to cold house. nest disconnected from wifi, battery low wires connected: blue-y1; green-g; red-Rc;… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,118 satisfied customers
I just installed the Nest Tstat in new house I just purchased.
I just installed the Nest Tstat in new house I just purchased. The HVAC system is 8 year old Amana. I have 5 wires Red, white, yellow, green, blue. The system is working fine but I did not hook up the… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,980 satisfied customers
I have Carrier 58BV125 gas furnace. Over summer replaced
I have Carrier 58BV125 gas furnace. Over summer replaced mercury thermostat with Nest 2.0. A/C works fine. But heater does not. I have 5 wires Y1, W1, Red, G, C. Nest had me remove C (blue) and A/C wo… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,554 satisfied customers
NEST Thermostat Battery is not charging. What can I do?
I have exactly the same problem as people on this forum in that the Nest battery is not being charged by the AC. I tried to follow your instructions, but the problem is that I don't have a C or Com la… read more
SWFLHVAC
SWFLHVAC
85 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,029 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

I have been in the HVAC business for over 40 years.

Jerry

Jerry

Service Technician

505 satisfied customers

HVAC Technician. Hearth Products Specialty

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x