Questions tagged [water-circulating-heating]

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

17 questions with no upvoted or accepted answers
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36 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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27 views

Why am I getting cold water at faucets near the end of a circulation loop?

We have a circulating pump for our hot water tank - the pump sits between the tank and the line going into the house. The issue i'm facing is if the pump is not running, I get endless cold water to ...
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430 views

How to wire a Taco zone valve controller with ecobee

I'm having an issue with wiring my Weil McLain gas boiler. It was wired up fine and working for a single zone. I added (2) 4 wire zone valves in. So I now have 2 zones, a Taco zone valve controller(...
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38 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 dial....
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3k 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 ...
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1answer
32 views

How can I figure out if a Combi Boiler will be adequate for my house?

We recently moved into our new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, it's done its job and in need of a replacement. We had ...
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22 views

Boiler not circulating

I have a Bosch 30 HRC boiler. Yesterday, I added water to the system, increasing the pressure from 1 bar to just below 2 bar. I vented each radiator in the house to bleed the boiler. When I open the ...
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16 views

We have a ranch home with baseboard heat, 2 zones work 2 zones dont

We have 4 zones and 4 thermostats with baseboard heat in our ranch home.. 2 zones are working, and 2 zones are cold. What would cause this?
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32 views

Could I use perlite under floor heating foam panels?

Context: I want to install an in-floor water based heating system in an apartment on a higher floor. As such, there are 2 problems: I cannot afford to have 2 layers of screed (because I need ...
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74 views

Peerless Boiler not heating - No flame

I have a Peerless boiler and today woke up to it not heating the water. The water definitely feels like it is circulating through the pipes, but the water temp isn't getting over 60 degrees. We had it ...
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19 views

Vibrating through beams from circulator pump and at strange times

I have a grundfos alpha 2 circulator pump which for the last two years (since I moved into the house) when the heating turns on makes a vibrating noise. This vibrating noise I believe is then ...
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1answer
29 views

Bedroom Radiator not operating properly

We have two nest thermostats installed over a month ago and i am not sure the issue was after or before the installation of nest thermostat. We have two zones of heating installed in our house.One is ...
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1answer
577 views

Nest E thermostat on ancient 2-wire Bryant boiler system with 2 zonesq

I have a 2-zone hydronic system running off an ancient Bryant boiler. Power is supplied by a 24V transformer, and each red wire passes through a Taco zone valve before heading off to the appropriate ...
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1k views

What is this blue build-up on my pipes, and is it an issue?

I've looked around the intertubez, and think this MIGHT be galvanic corrosion, but there was NO sign of it when we bought our 1930's house 5 years ago. The Taco pump WAS replaced 3 years ago (that's ...
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2answers
194 views

Boiler vent and expansion tank leaks

I had my boiler inspected and cleaned recently and the tech found a few issues. He showed me how the valve on the expansion tank would leak when he would push it in, which means the tank needs to be ...
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61 views

Shower temperature hot or freezing

Our gas powered shower has been gradually needing an increase in temperature over the last few months in order to have a warm shower. Originally a 32 degree shower was perfect, but gradually we have ...
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581 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 ...