HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Related HVAC Questions
Rick having problem getting the heating on - issues with
hi rick having problem getting the heating on - issues with HC60NG, HCW80 and ST9400C - not sure where the problem lies, but HC60NG blinking red light, doesn't seem to connect with the room thermostat… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
I want to replace my central heating / hot water thermostat
I want to replace my central heating / hot water thermostat and timer with the smart Hive from British gas. I'm confused with the 4 cable wiring in my current old dial thermostat. I'm not sure what I'… read more
Andrew Smith
Andrew Smith
General Manager
Vocational, Technical or Trade Scho
3,001 satisfied customers
A friend has what sounds like a combination water heating and
A friend has what sounds like a combination water heating and forced air central space heating system. The home is less than 20 yrs old. The problem is that the house gets too hot, regardless of therm… read more
Brian
Brian
Plumbing & Heating Engineer
741 satisfied customers
We have fitted a honeywell cm927 wireless programmer to a
Hi we have fitted a honeywell cm927 wireless programmer to a heatline monza 28 kw boiler but cant get system to respond from programmer.control is signsling to room stat but not firing boiler. boiler … read more
warmneighbor
warmneighbor
owner
Vocational, Technical or Trade Scho
162 satisfied customers
our ecotec 838402_06 fires up and is supplying hot water perfectly
our ecotec 838402_06 fires up and is supplying hot water perfectly well but I have tried to get the radiators working this weekend but without success. I have gone through the programme modification v… read more
Andrew Smith
Andrew Smith
General Manager
Vocational, Technical or Trade Scho
3,001 satisfied customers
my boiler is a worcester greenstar 30si the hot water works
my boiler is a worcester greenstar 30si the hot water works fine but I can not get the central heating to start… read more
Andrew Smith
Andrew Smith
General Manager
Vocational, Technical or Trade Scho
3,001 satisfied customers
I have purchased the Honeywell CM927 Wireless Programmer and
I have purchased the Honeywell CM927 Wireless Programmer and Relay to use on a Y Plan system. I think I have sorted most things but am a bit stuck on how to wire the relay switch to the wiring centre.… read more
Andrew Smith
Andrew Smith
General Manager
Vocational, Technical or Trade Scho
3,001 satisfied customers
i have a baxi solo 3 boiler and wish to install a wireless
i have a baxi solo 3 boiler and wish to install a wireless room thermostat. do i connect the receiver to the standard L N or the L SL connection block? Thanks… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
Dear Sir, I wish to replace my mechanical central heating
Dear Sir, I wish to replace my mechanical central heating thermostat with a Siemens digital one. I have a Baxi Combi 105e boiler which is controlled from a Siemens RWB7 programmable timer (in the kitc… read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
hello i have a vailliant turbomax combi and im looking at
hello i have a vailliant turbomax combi and i'm looking at getting a wireless room thermostat to help control the temp in the house a little better so i can have the boiler programmed to come on more … read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
Home heating using a condensing boiler I have a newly installed
Home heating using a condensing boiler I have a newly installed heating system Installed by WarmFront. The system has been fitted with a Wirelwss Room Themostat HCW80 which seems to be designed to wor… read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
I need a wiring diagram for a LP522 used in conjuction with
I need a wiring diagram for a LP522 used in conjuction with a Glow worm HXI 15. The system is fully pumped mid position with pump over-run. A Siemans Flow minder,Honywell T6360B room stat and Poterton… read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
I have a Digistat RF wireless system of control using a RF2
I have a Digistat RF wireless system of control using a RF2 room stat. My boiler indicates no demand signal. My RF2 indicates a flame to call for heat. My SCR unit red led in on, and does not flash to… read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
I am replacing a faulty Honeywell ST6400c programmer with a
I am replacing a faulty Honeywell ST6400c programmer with a siemans RWB27. It will operate a one zone gravity fed central heating system only. There is no hot water. Will the wiring be the same? and i… read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
I have a Drayton Digistat RF3i wireless system central heating
I have a Drayton Digistat RF3i wireless system central heating control. I recently replaced the batteries without losing the settings. My central heating has been off for the summer and when I turn th… read more
Rick Ridley
Rick Ridley
UK Heating Engineer
30 years on the tools
871 satisfied customers
I have a Honeywell CM67 z controller driving HR 80 radiator
I have a Honeywell CM67 z controller driving HR 80 radiator valves via a relay box. The installation is correct and away from any radio sources but at night the system comes on by itself even though t… read more
alex hewitt
alex hewitt
Vocational, Technical or Trade Scho
60 satisfied customers
My mate has a large property. Heating system has 2 ferrolli
My mate has a large property. Heating system has 2 ferrolli boilers controlled by a honeywell wireless programmer/stat. A plumber has now fitted an external 230v pump to system. I am an electrician bu… read more
Doug Eby
Doug Eby
Associate Degree
6 satisfied customers
Commercial application. Need programable thermostat for main
Commercial application. Need programable thermostat for main office area and a separate thermostat with a toggle switch override for a conference room on the same system.… read more
Robert
Robert
Associate Degree
161 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:

Phil

Phil

Mechanical Engineer

7,791 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

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 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.

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 >

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