Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

For questions regarding a central heating system for the home. The system consists of a furnace or boiler and a method to distribute the heat throughout the home.

0
votes
0answers
15 views

Central heating pump noise only in farthest radiators

My central heating pump (1 year old, came together with the new boiler) is making a noise, but it is possible to hear it only in the most distant radiators. Other radiators are so quiet that you can ...
1
vote
0answers
19 views

Dual energy controller 2AC02700701 runs heat pump with low fan only

I am running a central heat system that uses a heat pump as stage 1 and a gas furnace as stage 2. The thermostat is not directly connected to the furnace and heat pump motor, instead to goes through a ...
2
votes
0answers
31 views

Thermostat White-Rodgers 1F82-261 switches to stage 2 heat for no apparent reason

I am running a central heat system that uses a heat pump as stage 1 and a gas furnace as stage 2. The thermostat used is the White-Rodgers 1F82-261 which supports 2 stages of heat. When using regular ...
1
vote
2answers
130 views

Is the ventilation in my utility closet a construction mistake?

With colder weather here in Northern Colorado (down to 22° F) my Goodman 90% efficiency furnace (GKS90453BX) came on for the first time in the (ca. 2005) home that I recently moved into. The furnace ...
1
vote
0answers
35 views

What is the function of this valve marked VB in my central heating

I've been trying to track down why one of my radiators in a newly acquired house has no flow. After finding that one side of the radiator is blocked off, further investigation located a motorised ...
1
vote
1answer
37 views

My AC and Heat systems are separate, Can I wire one or both fan(only) controls to my thermostat?

My house used to have just Forced Air heat, but a year and a half ago, I had central air installed. When it was installed I had questions about the wiring they weren't addressed to my satisfaction. ...
0
votes
0answers
29 views

Nest Thermostat E and OpenTherm

On nest.com it's possible to find out that the 3rd generation Nest Learning Thermostat supports OpenTherm protocol to communicate with a central heating boiler. Does the cheaper (and the very recent) ...
0
votes
1answer
55 views

What type of tradesman do I need if the downstairs of my house is too cold

I have bought a home and in winter the extremities of the ground floor are very cold. The original part of the building is the centre, and it has been extended in the front and the back. The main ...
0
votes
1answer
29 views

Under Floor Heating (Wet) - pipe coupler under the screed?

I want to fit UFH to a whole house - normally it would be an easy process if one could just move out and live somewhere else as the whole house gets gutted and re-done. However, ideally, i want to fit ...
0
votes
1answer
47 views

Advice on adding a LPG Gas Boiler on Central Heating System with a Hot Water Storage Tank heated with Solar Panels

I am from Kathmandu, Nepal, and presently trying to install a central heating system in my house using Solar Water Heater. Background: Winter days in Kathmandu lasts about 130 days a year. Minimum ...
0
votes
1answer
30 views

Drain down heating system

I'm currently draining my heating system (radiator valve sprung a leak), however I have left it for a ages (1 hour) and it is still going, when I turn the bleed valve on an upstairs radiator air does ...
1
vote
1answer
100 views

Metallic smell when HVAC Unit. fires up. What could it be?

Background: The HVAC unit I have serves both the 1st and second floor, but does a poor job of distributing heat to the 1st floor. The previous owner added a hydrodronic boiler and baseboards to the ...
1
vote
1answer
272 views

Ecobee 4 installation - No C constant 24V option on Furnace

Ecobee 4 installation help? Any handy people available? I am looking to install an Ecobee 4 in my condo. There is an older HVAC system, Unilux LE600. The furnace itself does not have a C connector, ...
0
votes
0answers
60 views

Why won't my air conditioner turn off since a power outage?

Last week the power went out to my neighborhood as they did some work around the corner. When the power came back I found my AC would not turn off. I had the air set to 72 and it went down to 60 ...
1
vote
1answer
35 views

Is it possible to test a drained central heating system without filling it with water

Say there is a house with a just combination (combi) boiler for hot water, but the central heating system has been drained for a couple of years as the house has been uninhabited. Is it possible to ...
0
votes
0answers
18 views

How to fix noise in my bedroom since change of furance/ac but not air ducts?

I had furnace company back out and he told me it is probably a problem with a damper but it would be hard to find out where. It is only loud in my room on second floor but not in other bedroom next ...
0
votes
2answers
43 views

Upgrading from a 3 wire rotary thermostat to a Electronic Digital

This is my first post so please be gentle. I currently have a Honeywell rotary thermostat (240V) 3 Wires plus earth. Live in Neutral (for the anticipator I believe) Switched live out I appreciate ...
2
votes
1answer
447 views

Why is there a vent on the ductwork coming right from the furnace?

Why is there a vent on the ductwork coming right from the furnace? I have a typical furnace for a 1400sqft house in Michigan. I also have central air which runs through the same duct work. There is a ...
0
votes
0answers
12 views

Oil Boiler C terminal?

I am adding 3 ecobee4 thermostats to my system to replace 3 old thermostats. The system is heat only and currently only has 2 wires connected at the boiler. There is a third wire to each (green that ...
0
votes
1answer
65 views

Cost effectiveness of fireplace with insert vs electric furnace

Now that winter is here I have been using my fireplace (that has an insert) more and more instead of my furnace that has a electric heater. I was wondering which method of heating would be the most ...
0
votes
2answers
39 views

Central heating [uk] thermostatic valves

I'm the UK in case that matters. I have a traditional gas central heating with radiators. As is common, the radiators have thermostatically controlled values, except for one of the radiators which ...
1
vote
1answer
43 views

gas furnace will not come back on

our goodman gas furnace fires up but when the temperature drops and it should come back on it doesn't unless we hit the reset switch. Repairman has been out and changed the breaker and thermostat. ...
0
votes
0answers
27 views

Debris on duct work

I have drop ceilings in my basement, but was up there to do some work recently. I noticed some debris on the air ducts. I was wondering if anyone knows what it is and whether or not I need to be ...
0
votes
2answers
310 views

What should the plenum temperature be on a modern furnace

I had a tech out to review my furnace that's not keeping up - a Trane XV80. They poked around, and saw that the plenum temperature is 95F. They then told me that it should be around 140F, which is ...
0
votes
1answer
31 views

Can a flexible flue liner be installed in an old central heating flue for modern HVAC systems?

I have an old gas central heating system which has recently failed. Newer systems cannot leverage the old flue as they require an internal pipe as well. Replacing the flue will cost a considerable ...
2
votes
1answer
179 views

Water radiator system has single loop instead of flow & return pipes — does this make sense?

I have a hot water heating system connected to several radiators throughout the house. While all diagrams I have seen of radiator plumbing have a separate flow and return pipe, this one has a single ...
1
vote
2answers
1k views

How often and long should my fresh air intake run?

My builder installed a fresh air timer on my furnace, a 24-hour pin timer with 15-minute increments. When it's on, it runs the fan and opens the fresh air damper. The resulting air that comes from the ...
0
votes
1answer
93 views

What affects the pressue in an open vented central heating system

Radiators in my loft do not work well, one proposed cause is insufficient pressure, other than the feed/cistern height what affects this ? Although my radiators are in Loft the cistern in a roof void ...
0
votes
1answer
28 views

What diameter should pipes from boiler to heating the hot water cylinder be

What diameter should pipes from boiler to heating the hot water cylinder be - the same as the pipes used for radiators or larger ?
1
vote
3answers
117 views

Do you need to balance radiators in a sealed system

Considering the pro cans cons of moving form an open vented central heating & hot water system to a sealed pressurised system One question I have do you still need to balance radiators in a ...
0
votes
1answer
179 views

Would pipe from radiator to bottom of hot water tank be supply or return?

I have one radiator that does not work at all (although it has worked in the past). Unlike all the other radiators that come directly of the main supply and return pipe from the boiler I can see that ...
0
votes
1answer
23 views

In open-vented central heating system why does height of cistern matter when water gets pumped anyway

I'm struggling to understand the interplay between the pump that pumps water and how the location of the feed expansion tank affects whether radiators work. In my system most of the radiators work ...
0
votes
0answers
23 views

Is it usual/desirable for main supply pipe to be larger than radiator pipes

I have been looking at the layout of my central heating. Because my house is old it has solid ground floor and solid internal walls. Boiler is on ground floor but supply and return pipes go into ...
1
vote
1answer
165 views

Removing a room stat from central heating (in order to fit Hive)

I'm about to fit a Hive wireless thermostat to my central heating system and have a couple of questions. I need to disconnect the existing room stat - a Horstmann Centaurstat 7 - as this will be ...
0
votes
0answers
51 views

Down flow furnace ducting issues and a steam humidifier

I purchased a new but old stock Honeywell 440 steam humidifier for our 25 yr. old 1400 sq.ft. home in the Reno, NV area. The furnace is a down flow type that uses below floor uninsulated galv. ducting ...
0
votes
0answers
59 views

Is it a bad idea to disconnect the my radiator fan?

The fan that circulates air through a radiator in the apartment I rent is very loud and my landlord doesn't want to replace it. He gave me permission to disconnect the fan. I think this makes it ...
0
votes
3answers
51 views

Venting floor heating

I've had sub-floor heating installed a month ago and I think I have a problem with the air in the installation, because there are some rooms that don't reach the desired temperature. The plumbers ...
1
vote
2answers
89 views

Central heating system / boiler does not shut off

I'm hoping someone here can help with a mysterious fault with our central heating system, which sometimes gets stuck and runs all day even when the timer is off. It's a standard (for the UK) low-...
2
votes
0answers
73 views

Strange Pin Pierced Pipe in Boiler

Just wondering if anyone had any ideas on this? I put the central heating on for the first time in about 6 month the other day. The radiators did not get hot and within a few minutes the boiler ...
1
vote
0answers
284 views

3 wire heating system, has 3 unused wires with 16v, can any be used as a common wire?

I hopefully have a quick question. I am thinking of getting a Ecobee or Nest smart thermostat, but doing my checks/research before getting one for this house. I rent, so I can only do minimal changes. ...
1
vote
1answer
419 views

How do I permanently remove a steam radiator?

I have a steam radiator in my apartment that I would like to completely remove, because: I want to use the space for something else my apartment is too warm it makes a loud hissing noise when it's on ...
1
vote
2answers
70 views

Should it possible to remove the heat exchanger from my natural gas furnace?

I have a 20 year old heating and cooling system. I was able to remove an inspection panel and clean the backside of the evaporator coils. To clean the front, it appears the only way I will be able to ...
1
vote
0answers
33 views

Central heating component identification

I am just wondering what the brass pot is? It's hot, and attached to the pump, as well as pipes leading downstairs and to some storage tank. It also sounds as if some small ball bearings are swirling ...
1
vote
1answer
26 views

Under-floor heating and sub-floor

I want to replace my existing carpeted living room with a wooden/laminate floor - as part of this project, I was also considering putting under-floor heating in. Currently, the floor consist of ...
1
vote
4answers
775 views

How do I grip stainless steel pipes for threading?

I am about to install a new central heating system powered by a wood pellet boiler. To obtain maximum corrosion resistance, I have chosen PEX pipes for the low temperature underfloor heating circuits ...
1
vote
2answers
475 views

Central heating header tank over flow

Googling this issue I'm finding lots of conflicting answers and many horror stories about significant parts of the system needing replacement, so I'm trying here for, hopefully, a more considered ...
0
votes
0answers
39 views

Occasionally, my Lenox G12E won't start unless I unplug it then plug it back in. Then it runs fine

It's a Lenox G12Q4E-60-6 When the pilot flame comes on, the gas starts just fine, so I'm thinking it's not a problem with the flame sensor. Is this a circuit board problem? The controller? ...
3
votes
2answers
332 views

Help with oversized furnace causing short cycle

I have just moved into a new home that had a pretty terrible HVAC system installed brand new by a flipper which has been causing me a ton of headaches. My house is 2000 sq feet, and the furnace is ...
1
vote
0answers
136 views

Can I usefully control an electric baseboard heater in 1 room with the same thermostat as my central heat?

My house has a gas furnace and heat pump (and AC). Unfortunately, one bedroom does not have air ducts hooked up. Is there a way I could install a baseboard heater in that bedroom and have it ...
0
votes
0answers
74 views

Finding the copper pipes the radiant floor heating converges

I'm trying to troubleshoot our central heating system in our residential house. Our house was built around the 90s and I've found that we use Radiant Floor Heating. The plans I've obtained from the ...