A central heating system that transfers heat from a boiler to each room through a fluid filled plumbing system.

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1answer
5k 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 ...
5
votes
2answers
64 views

Broken Hot Water Circulating Pump - Shouldn't I still have hot water in showers eventually?

I have a Grundfos hot water circulator. After turning off the main to the house and the hot water circulator the other day to change out a valve for our dishwasher, the hot water circulator hasn't ...
4
votes
3answers
503 views

Why would cold water be introduced into underfloor heating system?

What connection has the cold water distribution to a washing machine and laundry sink have to do with my heating? There is a tap-off from one of the flow pipes for the heating which goes through what ...
4
votes
3answers
25k views

Why is it taking so long for my house to heat up?

Firstly, I should probably mention that I'm in the UK... My wife and I bought a house new from a builder over 9 years ago and have had no problems whatsoever with our central heating system in that ...
4
votes
1answer
488 views

What does a manifold do in an underfloor heating (UFH) system and why do they cost do much?

I am trying to understand what the manifold does in a UFH system. It seems to just be an overpriced collection of T joins connect in a row with a basic valve on each. What am I missing?
4
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2answers
9k views

Can I convert a radiator to radiant floor heating in a room?

I am purchasing a new home, and designing some renovations to several rooms. The house has a gas boiler and radiators throughout the house. For the kitchen and upstairs bathroom, I will be putting ...
3
votes
1answer
5k views

What does C, W, Y and S Plans mean when talking about central heating controller?

I have seen control systems sold as C, W, Y, or S plan, what the difference? Are there any other common setups (These are water based CH systems, so are unlikely to be used in the USA)
3
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2answers
3k 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. ...
3
votes
1answer
23 views

Hydronic heat radiators not used for long time - should they be drained?

What should I do with radiators that have been out of action for about 3 years since the boiler went on the blink? Is it better to drain the water out of the system while system is dormant?
3
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2answers
228 views

Banging behind wall when heat comes on

In the past day I started hearing a banging behind the wall of my house it seems when the heat comes on. We have water heated baseboards. We lived in this house nearly two years and never experienced ...
3
votes
2answers
64 views

Fill heat tank with glycol in off-grid system?

EDIT: I'm settling for a simpler system: no solar thermal panels; just a small 50 liter water heater, AC powered, run through the inverter. (So, practically no hot water in the winter time.) I'm ...
3
votes
1answer
60 views

heating zone stays hot even when the thermostat isn't calling

we're trying to solve a very strange hot water heating problem (drawing below). We just separated the the 2nd and 3rd floors in my house into two separate heating zones, and the 3rd floor is now ...
3
votes
1answer
109 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 ...
2
votes
4answers
467 views

How do I fix radiators that come on at different times?

We have radiators in all rooms but the ones in the bathrooms come on at different times to the rest of the house. This is particularly annoying when getting up at 6am and stepping into a freezing ...
2
votes
1answer
18k 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 ...
2
votes
3answers
61 views

Stripping parquet floor glue to install underfloor heating

We have a huge lounge in our new house (in the UK) and it is covered with parquet flooring which we dislike. The little wooden blocks are starting to work loose here and there, so I don't see it as ...
2
votes
3answers
546 views

hydronic floor heating system efficiency - using concrete as thermal energy store or not?

I am renovating my house and would like some advice on floor heating for my living room. I have dug this room out to a depth of 97 cm to create a lower level. I have lined this box with 2.5 cm thick ...
1
vote
2answers
55 views

How to block baseboard (water heated)?

I live in an apartment complex where my water baseboard heating is 100% controlled by the complex staff. This year has been particularly tough, as it's been very warm since winter started and even ...
1
vote
1answer
34k 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 ...
1
vote
2answers
6k views

Using PEX for baseboard run

I had a copper (baseboard heat) pipe freeze and burst, and need to replace a run of pipe that's exposed to that kind of cold when it gets below 0F outside. The pipe is below the floor on an exterior ...
1
vote
1answer
1k views

What would cause a gas fired, forced water boiler to shut down?

I have a fairly old Peerless, natural gas fired, forced water boiler. It has an electric ignition system (White Rodgers 50E47-843 Universal HSI Ignition Module). A few weeks ago it shut down (safety ...
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vote
2answers
416 views

how to drain a single loop in one of my heating zones?

I have baseboard hot water heat. In one of my heating zones, there are three "loops". (i.e. shortly after the supply leaves the zone valve, the pipes split in three directions. These pipes then ...
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vote
2answers
78 views

Heat radiators not all working

I am new to this place and looking for help. Just feel that I wanna try to fix my heat system by myself rather than waiting for (really sucking) pes&g guys. Repairmen came days ago and was ...
1
vote
1answer
491 views

How should I install underfloor heating over OSB subfloor?

I need some help on my DIY project for underfloor heating system in an apartment. The question is on the screed requirements provided that I have the following (non traditional) setup. There is ...
1
vote
1answer
502 views

We have a Chromalox EDB-20-1 hot water furnace, and it sounds like a flowing stream whenever the water flows through the house

The pressure is fine (15 psi) and it heats the house fine. I would think the water needs topping up except for the fact the pressure is optimal. Any thoughts on what I can check/do? The sound is ...
1
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1answer
343 views

What does the low limit do, and where should it be set on an oil fired hot water furnace?

What does the low limit do, and where should it be set? My furnace has a honeywell triple aquastat relay and has a difference dial. Water temp is about 190 deg F. Also, water psi gauge is only ...
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vote
2answers
342 views

Can I replace my oil-based water heater with several electric ones?

I was looking at this question, which is somewhat related to mine but didn't give me a good answer: How to evaluate the suitability of an electric tankless water-heater Basically, my mom's water ...
1
vote
1answer
11 views

What is involved in bleeding air from a multi residential hot water baseboard heating system installed in 1965?

Residents are complaining of banging in the hot water baseboard heating system in our multi-residential building built in 1965. How difficult/involved is it to bleed the pipes? Does it have to be done ...
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vote
2answers
84 views

Why are some rooms warmer than others with radiant baseboard heat?

We have hot water baseboard radiation heat. How is it possible that the first room the hot water is supposed to heat is cold and the second and fourth room are to hot and the third and fifth rooms are ...
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0answers
27 views

Expansion tank is cold

My old-style expansion tank is cold from top to bottom, but I hear boiling water in the pipes right above the gas furnace. Is that normal?
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0answers
16 views

FHW oil basedboard radiators are hot even when t-stats turned off. Sediment in pipes?

I moved into a condo a few months ago. It has a forced hot water oil heating system. First floor is one heating zone; second floor is another; boiler is in basement. T-stats are manual/mercury ...
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0answers
1k views

Water not circulating in one radiator on a hot water boiler

My boiler has 4 zones. Zone 1 is the bottom floor. There are two radiators in zone 1. I am replacing one of them, an old baseboard radiator, with a cast iron with similar BTU. We hooked up the new ...
0
votes
1answer
41 views

How to get heating system working again?

We have an oil-fired boiler that does both the hot water and the forced hot water baseboard heating system. It was unusually cold and windy last night here in north-central Massachusetts. I turned ...
0
votes
2answers
109 views

Hot and Cold water seem to be mixing

Having a problem with hot and cold water seemingly mixing in my house where some locations can't get cold water and others get a mix of warm/cold from hot settings. The scenario: Moved into a new ...
0
votes
2answers
241 views

Connecting PEX and my existing Boiler Heating System

I was thinking of running oxygen barrier PEX under the floor between the joists in a cold room with a crawl space below and then putting rigid foam insulation below to keep the heat in. I have an ...
0
votes
1answer
33 views

Valve left shut by accident in forced hot water system

Due to a cold house I went down to investigate my forced hot water / oil burner system. I discovered that apparently when my indirect water heater was being replaced three months ago the plumber left ...
0
votes
1answer
63 views

Retrofitting floor radiant heating under hardwood floors

I am considering retrofitting radiant floor heating into the first floor in my home by attaching the pex to the bottom side of the subfloor from the basement. On the top side of the subfloors is some ...
0
votes
1answer
183 views

Electric Radiant heating Vs Hydronic - What can I get?

I have a carport that was closed in to become a 3rd bedroom in our house. It has a low ceiling of approx 8 or 9ft. I gutted the whole room so it's down to the slab right now. I'm in the process ...
0
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0answers
14 views

Hydronic PEX: OK to use clamps and tubing from two different brands?

I have an old 1900 house in Pittsburgh that I'm replacing the radiators with new Runtal rads. I have been replacing the old black iron feeds and returns with Zurn Performa PEX with Sharkbite brand ...
0
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0answers
13 views

Should I replumb my heating system when converting from steam to hydronic heat and back?

I live in an old 2-story house that originally was piped for steam heat. Some time ago (1950's) a previous owner took out the radiators, put in fin and tube baseboard radiators, and installed a hot ...
0
votes
0answers
64 views

No heat going to zone (baseboard)

We have a three-zone baseboard heating system. One day it became extremely hot in one of the zones on the 1st floor; it seemed as though the system was pumping hot water no matter what the thermostat ...
0
votes
0answers
227 views

How to stop central heating system from leaking

Our central heating system is leaking a bit of water. The system is a Ferolli Megadens 5, it heats water for both the central heating system and the shower/tap. There are several pipes below the ...