HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC

what is the basic difference between a mechanical thermostat

Customer Question
as opposed to a digital...
what is the basic difference between a mechanical thermostat as opposed to a digital thermostat. I have a steam heat boiler.

Also, I switched from mechanical to digital and it seems to work very different.

My question is, since I got the digital thermostat what happens is that sometimes the set temperature is reached and the bottom floor of the house gets heat but the 2nd floor does not because the thermostat shuts down the boiler. Is that because we have been having above normal temperature and the house is too warm.

When the temperature go down to normal winter temperatures I would assume the boiler will run for a longer time so that heat reaches the 2nd floor.

I live in Yonkers, NY.

Thank you.
Submitted: 8 years ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 10 hours by:
11/10/2009
HVAC Technician: Rick, HVAC Supervisor replied 8 years ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 23,050
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified
HiCustomerbr />
What you suspect is likely the problem. The boiler isn't running long enough to push heat to the radiators furthest from the boiler. The way to mitigate this problem is to adjust the air vents on the radiators so that the radiators closest to the boiler and in the same room with the thermostat are on low numbers and those furthest from the boiler are on high numbers. Some air valves are not adjustable so you won't be able to balance the system like this unless you have adjustable air valves. Your problem probably has nothing to do with the thermostat
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 23,050
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified
Rick and 87 other HVAC Specialists are ready to help you
Ask your own question now
Ask Rick Your Own Question
Rick
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 23,050
23,050 Satisfied Customers
Experience: 40+ yrs. experience as a licensed oil & gas technician.

Rick is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

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:

Phil

Phil

Mechanical Engineer

6,938 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

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

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

953 satisfied customers

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

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

< Previous | Next >

Related HVAC Questions
I am trying to hookup a digital thermostat but cannot figure
I am trying to hookup a digital thermostat but cannot figure out the c wire on the furnace … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
My crown boiler boiler model no. AWR070ENST2PSU runs for a
My crown boiler boiler model no. AWR070ENST2PSU runs for a short time, shuts down, then takes a long time on start running again. We change the control. the pump, and the gas valve, Don't appears to h… read more
Rick
Rick
HVAC Supervisor
23,050 satisfied customers
My Honeywell digital thermostat, i've Changed the batteries
My Honeywell digital thermostat, i've Changed the batteries but I cannot adjust the temperature to go up. It will go down. All other functions seemed to be working … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Some "friend" reset my Honeywell digital thermostat and now
Some "friend" reset my Honeywell digital thermostat and now it seems to be … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
My digital thermostat went out, cannot set or see what temp
my bryant digital thermostat went out, cannot set or see what temp it is … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
Just upgraded a basic Ace mechanical thermostat for my wall
Just upgraded a basic Ace mechanical thermostat for my wall heater to get programability since I am there only a few hours a day. i bought a Honeywell rth6360. There are only two wires which I put in … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
Im working on a boiler right now and the boiler is running
Hi pearl im working on a boiler right now and the boiler is running but is not heating the downstairs not the upstairs. I can't figure out why. Yesterday I replaced the pressure relief valve and the e… read more
Rick
Rick
HVAC Supervisor
23,050 satisfied customers
I have a replaced older standard digital thermostats with
I have a replaced older standard digital thermostats with Honeywell Lyric T5. I have electric unit with single stage cool and two stage heat I think (heat and emergency heat on old thermostats). When … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Our digital thermostat went blank. We have a model
Hi! Our digital thermostat went blank. We have a model CU5830-C175 Payne furnace. Code 33. I replaced a very dirty filter, manually hit the reset and the furnace worked, fan and flame. Goes through a … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
We have a 7-day programmable digital thermostat and lost the
We have a 7-day programmable digital thermostat and lost the instructions. I messed up trying to program it, and now it won't come on at all. It is getting very cold and we need the heat. How can I ge… read more
Rick
Rick
HVAC Supervisor
23,050 satisfied customers
I have a honey well mechanical thermostat that makes the
Hi i have a honey well mechanical thermostat that makes the spring sound when i turn leaver to go on, but my furnace does not go on. This is on my upstairs thermostat. The bottom floor one turns the f… read more
Rick
Rick
HVAC Supervisor
23,050 satisfied customers
I have a carrier unit in attic/digital thermostat/nothing is
i have a carrier unit in attic/digital thermostat/nothing is turning on-even in fan mode,all breakers are goood … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Need assistance in programing honeywell digital thermostat.
need assistance in programing honeywell digital thermostat … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a Honeywell digital thermostat. the back light was
I have a Honeywell digital thermostat. the back light was out. it said the battery needed replacing. forgetting you can tip out the battery pack to do the replacement, I just pulled the unit off the m… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Batteries died in heat pump digital thermostat. Change
Batteries died in heat pump digital thermostat. Change batteries (3 AAA) replaced unit now no AC or fan?… read more
Michael Ferryman
Michael Ferryman
87 satisfied customers
Trying to install a new digital thermostat. The AC red and
Trying to install a new digital thermostat. The AC red and white wires were spliced into the wires going from the furnace to the old thermostat. So I thought, "These should just be installed directly … read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
384 satisfied customers
I have an Emerson digital thermostat. The display is not
I have an Emerson digital thermostat. The display is not showing "system on" even though it should be calling for AC. … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a 1F80-361 programmable digital thermostat which,
I have a 1F80-361 programmable digital thermostat which, after 10 years, is giving me problems. Upon returning from an extended vacation, the thermostat is reading 79 degrees (HOLD mode) and the outdo… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 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.

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