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Questions tagged [radiator]

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31 votes
11 answers
9k views

Why are so many radiators installed beneath a window (at least in Germany)?

I live in Germany and I always wondered why the radiators in most apartments are installed right beneath a window. The pictures below show an example (this is an older building, but you see similar ...
André's user avatar
  • 311
21 votes
10 answers
7k views

Why does bleeding radiators save energy?

I wanted to bleed my radiators by myself for the first time and I was wondering what is the reason that bleeding radiators saves energy? Most of the guides on bleeding radiators mention that this is ...
user161351's user avatar
10 votes
2 answers
3k views

Should I insulate steam pipes in the basement?

I have a steam-radiator heating system. The furnace is in the (unfinished) basement, and the steam-carrying steel pipes spread out across the basement ceiling before going up into the rest of the ...
Vebjorn Ljosa's user avatar
9 votes
9 answers
16k views

Prewarming for tankless waterheater

I have a tankless water heater that is just a little bit to small for our new house - the temperature rise isn't quite enough for the winter months. Our basement is big and relatively warm so I struck ...
Tim Brigham's user avatar
9 votes
2 answers
2k views

What is the purpose of the valve between these two pipes?

I saw an interesting arrangement of pipes and valves in a house I visited. These are hot water pipes, the two vertical pipes connect to a radiator. What is the purpose of the valve between the two ...
Mike Mertsock's user avatar
9 votes
1 answer
61k views

Why is my radiator hissing?

I've never had a radiator before, all central air for me, but I'm living in an apartment that has them now. All of the radiators in my apartment have been hissing, and pouring out steam from the "...
Tin Can's user avatar
  • 193
9 votes
2 answers
24k views

Why does a single radiator need regular bleeding?

Almost all of the radiators (forced water) in my house heat up fine. However, a single radiator needs regular bleeding (~1/day) in order to heat. Note, this radiator is not at the highest point in the ...
Eli Lansey's user avatar
7 votes
14 answers
52k views

Are there fans for radiators to improve performance?

I lived all my life with forced air heating and cooling, but my house now has steam radiators. They perform ok, I suppose, but I know from trying that just letting the convection cause the airflow ...
geoffc's user avatar
  • 527
6 votes
3 answers
134k views

How can I stop my radiators "clicking" when they're turned on or off?

I have a central heating system on a timer, and whenever the timer turns on or off, for around ten / fifteen minutes, some of the radiators in my home make regular clicking noises, kinda hollow-...
Luke's user avatar
  • 221
6 votes
3 answers
3k views

What type of paint and how many coats should be used to paint a radiator?

We've moved into a new house with a fairly incompatible sense of interior design. To illustrate one room in particular, the walls are orange, the floor to ceiling shelves are orange, the fireplace ...
Ambo100's user avatar
  • 478
6 votes
1 answer
1k views

Newly purchased home, basement radiators don't work

we purchased a home a few months ago and now that winter rolled around, just realized the radiators in the basement aren't working. And I apologize for the long post, tried to explain everything I've ...
Joe Crozier's user avatar
6 votes
2 answers
4k views

Are radiator reflectors as effective as claimed?

I recently completed a survey to determine the energy efficiency of my home. The results weren't great but got me thinking about the quick and affordable things I could do to improve things and ...
cchana's user avatar
  • 225
5 votes
4 answers
15k views

Do home radiators waste water?

I received my second quarterly water bill and cannot believe it says I'm using 49,000 gallons of water each quarter. That's over 500 gals per day! So I started thinking about average water usage per ...
Jose Leon's user avatar
  • 495
5 votes
1 answer
1k views

Why do my radiators need to be bled at least once a fortnight?

Last winter, our radiators regularly lost their heat and consequently needed bleeding frequently. I couldn't see any obvious leak. What could be causing this and what should I check for?
Umber Ferrule's user avatar
5 votes
4 answers
17k views

How do I repair a small leak in a steam radiator? Could this be a big problem?

One of my steam radiators has a small leak under the bottom. No hole is visible, but water drips out at a rate of a few drops per minute. Various websites suggest applying a 1 mm thick layer of J-B ...
Vebjorn Ljosa's user avatar
5 votes
1 answer
13k views

How can I get my third floor radiators working?

I have two radiators upstairs. One is slightly warm, and the other is not warm at all, leaving the room very cold. When I tried to bleed the radiators in the house, all of them released water and ...
Michelle's user avatar
5 votes
1 answer
12k views

How to design a radiator cover for good heat distribution?

I want to replace some battered, ugly radiator covers in my 1910 home. I have read that to function effectively, a radiator cover needs openings at the front top and bottom, so that natural ...
Norman Ramsey's user avatar
5 votes
1 answer
560 views

Question about bleeding baseboard heating

I have a house built in 1949 with baseboard heating (5 loops), and I don't seem to be able to find any bleeder valves at the baseboards themselves. One of the loops in particular is making an awful ...
Jack's user avatar
  • 51
5 votes
1 answer
766 views

How to drain a baseboard radiator system for a repair? How to refill the system?

I have a leak in the second zone in my baseboard radiator system. When installing some drywall in the room the previous owners nicked the copper pipe with a drywall screw, and it appears to have ...
Jon Fournier's user avatar
4 votes
1 answer
5k views

Why are steam radiators used in the USA?

In the UK, we use water radiator systems when the boiler heats the water to about 70°C, this allows the boiler to get most of the energy out of the gas (or oil) by condensing the steam you get ...
Walker's user avatar
  • 6,239
4 votes
11 answers
176k views

Why is my hot water baseboard heater not heating?

I have classic cast iron radiators in my house and then one "modern" one pictured below. It was installed in the 80s from what I know. It doesn't seem to produce much heat at all. It is properly ...
Peter Q's user avatar
  • 2,223
4 votes
1 answer
641 views

Understanding my radiator

I'm in my first apartment and it's a bit colder than I'd like it. Can I tweak the settings on my radiator so that it's warmer? I'm motivated to learn more about my radiator and it's hard to find ...
Alec's user avatar
  • 143
4 votes
3 answers
17k views

How do I remove the head off this Giacomini thermostatic radiator valve?

How do I remove the head off this Giacomini thermostatic radiator valve?: Click for larger view I was expecting part of the white bit to twist off easily, to reveal the inner pin on the valve. It ...
Harry Wood's user avatar
4 votes
1 answer
8k views

Why would only half a radiator heat up?

I'm having some trouble with a radiator. It doesn't bleed well, often not letting either air or water come out of the valve. And sometimes, only half of the radiator will be hot (well, warm). I was ...
Bill Nace's user avatar
  • 483
4 votes
2 answers
5k views

Banging pipes/radiator

I just moved into a new apartment and the steam heating is driving me insane. There are three kinds of noise: banging pipes when the heat comes on (seems to be coming from the floor/walls); hissing ...
jy928's user avatar
  • 61
4 votes
1 answer
9k views

How tight should a Maid-o-Mist steam valve adjustment screw be?

I have a single pipe steam heat system with radiators. To use this system I use the Maid-o-Mist brand valves. These valves come in different sizes. The website provides a nice diagram about what ...
Hogan's user avatar
  • 141
4 votes
1 answer
20k views

Why isn't water coming out of a radiator in my freshly pressurized system?

I live in an old Victorian with three stories, plus a basement and an attic. I tried to bleed the radiators in preparation for turning the heat on, but was unable to get any water out of the radiators ...
Beth's user avatar
  • 41
4 votes
2 answers
59k views

How long should water come out of a radiator whilst I bleed it, if the radiator is isolated?

Trying to isolate a leaking radiator. I've closed the locksheild valve by turning it clockwise until it tightened and set the thermostatic valve to 0. I've just tried bleeding the radiator to check ...
NikolaiDante's user avatar
4 votes
1 answer
430 views

How can I run plumbing from house to a nearby new office 1.5m away?

I am building a new office next to the house; it is about 1.5m away. I need to run, from the house's upstairs bathroom, 1 hot, 1 cold, and radiator with return (all of which I believe are 28mm to ...
Recycled Steel's user avatar
4 votes
1 answer
100 views

Help me Understand Hydronic System Boiler Circulator RPM / HP / Head / Flow / System Pressure [closed]

Help me understand the correlation between boiler circulator RPM / HP / Head / Flow / System Pressure - see the particulars at the bottom. CASE: My 1986 boiler came with Armstrong S25 circ (same as B&...
Roz's user avatar
  • 61
3 votes
3 answers
10k views

My eq-3 Bluetooth Radiator Thermostat CC-RT-BLE is just showing "UPD". How can I "unbrick" it?

The thermostat just shows "UPD" and there is no way to return to the operating mode. How can I complete the update when I didn't pair the device before or deleted the device from the app?
Tilman Vogel's user avatar
3 votes
2 answers
4k views

How can I stop my boiler from making all this noise?

I'd like to preface this post with the fact that I'm a complete diy amateur. I may say stupid things, or things that make no sense. Please feel free to correct me as I'm always open to learn. So, ...
JZeolla's user avatar
  • 175
3 votes
3 answers
25k views

Why does my radiator leak if it's not fully opened or closed?

I have a hot water (or steam?) radiator that leaks water unless it's completely open or closed. The side has a valve that can be turned to open or shut the connecting pipe. The other side has a steam ...
Louis Waweru's user avatar
3 votes
11 answers
16k views

Is there a tool that can clean the fins of a base board heater?

I have baseboard radiators in a new home (built in the 50s) and the fins are filled with lint. Vacuuming isn't pulling the stuff out. Is there a tool that can help with this?
user65674's user avatar
3 votes
2 answers
7k views

How can I stop heat loss due to an uninsulated porch?

I have an enclosed porch with very little insulation, it is typically very cold in the winter. However, there is a radiator in the enclosed porch. I have a gas boiler heating system in the house. I'...
Benzo's user avatar
  • 223
3 votes
3 answers
5k views

Part identification: Thermal cutoff within baseboard heater

We had a contractor paint our baseboard heaters with white thermal paint. He gutted the radiator's electrical components, in order to prepare the chassis for painting. In doing so, he snipped what he ...
Alexander's user avatar
  • 183
3 votes
2 answers
566 views

Question about refill valve on home heating system

I heard some gurgling in our baseboard heat recently, so I decided I should bleed the air out of our system. Never having done this before, I watched a few youtube videos to familiarize myself with ...
Doug's user avatar
  • 381
3 votes
2 answers
96 views

Capping radiator pipes away from trunkline because of asbestos

I'm permanently removing two radiators as part of a reno project (bathroom replacing with radiant floor heat). I know that the ideal situation is to remove and cap the pipes as close to the trunkline ...
UnionRenovator's user avatar
3 votes
2 answers
9k views

Why is my radiator not getting hot water or have air in it?

All except one radiator are working fine. The one that stays cold is in the room with the thermostat, so the system keeps running more than it should. I tried bleeding it and just water came out. I ...
steevc's user avatar
  • 145
3 votes
2 answers
801 views

Where can I find central heating system with radiators?

Coming from Europe, I am used to radiator heating systems and thinking about putting one into a fixer-upper house I intend to buy. Where can I find such a system in the North-American market?
txwikinger's user avatar
3 votes
2 answers
3k views

How to turn on a Honeywell gas heater

I am trying to understand how to turn the heater on in our unit. There is a thermostat on the living room wall that looks like this: And there is a trapdoor below the heater in the wall looking like ...
MicroMachine's user avatar
3 votes
1 answer
53k views

How do I bleed baseboard radiators without a bleeder valve?

I recently bought a newly remodeled 1950's era house about two months ago. It has a Weil Mclain fuel oil boiler that provides heat to four different zones (loops) in the house. Each zone has a couple ...
Pridkett's user avatar
  • 131
3 votes
3 answers
20k views

Can I use a spray sealant to seal a leak in my radiator?

one of my steam radiators has a leak on the bottom, away from the valve (has been checked, my husband has changed out the valve). can I use a spray sealant to seal this leak? (like FlexSeal)
Doris Love's user avatar
3 votes
1 answer
2k views

Steam Baseboard vs. Steam Radiator

We currently have a single pipe steam heat system. We've had a couple of plumbers in to give us estimates on recessing our exposed radiators. Neither of them seemed thrilled with the idea and one ...
mberkow's user avatar
  • 39
3 votes
3 answers
13k views

Combination boiler pressure zero after heating

I generally don't notice a performance problem with the boiler, but after I run the heat to the radiators and turn the boiler off, after cooling down the the pressure gauge shows zero. I can easily ...
Rob's user avatar
  • 131
3 votes
2 answers
7k views

What is the impact of a backwards connected hot water radiator?

When building a hot water heating system the plumber has connected one of the hot water radiators backwards, i.e., the loop comes in at the bottom of the radiator and leaves the radiator on the other ...
user's user avatar
  • 139
3 votes
2 answers
2k views

What is this kind of radiator bleed valve called?

I managed to shear off the middle bit of my radiator bleed valve yesterday, just by turning it with a key. The bleed valve went into a hex nut, which is ~11mm across. I don't absolutely have to ...
Andy's user avatar
  • 215
3 votes
1 answer
4k views

Fitting a thermostatic valve onto a towel rail

I've got a towel rail in my bathroom that is heated from my combi boiler. I'd like to fit a TRV to the towel rail. Is there any reason why I shouldn't do that? Should I buy a specific type of TRV, or ...
Jim's user avatar
  • 213
3 votes
2 answers
1k views

How can I replace the bleed plug for my towel rail?

I have a very similar type of radiator as this: However doing a bathroom refit, I have somehow lost the radiator bleed plug which is shown in the picture above. So if I turn the radiator on, it ...
AliGibbs's user avatar
3 votes
3 answers
15k views

What could cause my radiators to go cold when the hot water is turned on?

When only heating is selected on my program timer the radiators all work fine and are hot. But when both heating and hot water are on the water gets hot but all the radiators go cold. When the hot ...
graham rodgers's user avatar

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