News
Underfloor heating not heating well? Causes and insufficient flow
The boiler is running, the thermostat is calling for heat, and the living room floor is barely lukewarm. Or the underfloor heating is uneven: warm ...
How to bleed underfloor heating? A step-by-step home method
Part of the room is warm, part is cold, something is gurgling in the manifold cabinet, and the flowmeter float is at zero. This is what an air-boun...
Hydraulic separator: when is it essential and how does it differ from a thermal buffer tank
The house has underfloor heating on the ground floor and conventional radiators upstairs, each powered by a separate pump. The boiler operates corr...
Split or monobloc? What your heat pump requires from your installation
In the previous article on heating costs, we compared the costs of different heat sources, and heat pumps performed very well in this comparison, e...
What to heat your home with? A ranking of heating costs from cheapest to most expensive
Just a few years ago, choosing a heat source essentially came down to asking what was connected to the house: gas or coal, and less often electrici...
Why is one radiator cold while the others are hot? Balancing and hydraulic balancing of a central heating system.
The boiler is working properly, the fuel or gas is burning, and yet one room in the house stubbornly remains cold while the rest heats up without a...
How to set the heating in your home to pay less
The radiator dial has five numbers and a snowflake, but no one ever included an instruction manual. That’s the source of most household heating mis...
Three-way and four-way valves in a boiler room - construction, operation and installation
Three-way or four-way valve? These two names sound as if they referred to two versions of the same device, performing almost the same task, yet the...
Low-temperature boiler corrosion: why it causes damage and how to prevent it
The boiler is running, the basement smells of suffocating flue gas, and black, sticky liquid is leaking from the chimney or the ash-pit door. The o...
Water temperature in the heating system and the heating curve - how to set them so you don’t freeze
Three different settings in the home affect warmth, but only one of them truly changes the bill for the entire heating season. It is neither the nu...
Circulation pump operating modes: proportional pressure, constant pressure, and constant speed
In most homes, the circulation pump is set once, during installation, and then no one touches it for years. Meanwhile, the pump setting is responsi...
Preparing your central heating system for winter: A step-by-step guide
The heating season in Poland usually begins around the turn of September and October, when it gets cold for several days in a row and the heating s...
How to bleed a radiator – step-by-step instructions
To bleed a radiator, simply open the air vent with a key or screwdriver, wait until water starts flowing out instead of hissing air, then close the...
Too little water in the central heating system — symptoms and how to safely top it up
Cool radiators despite the boiler operating, a humming boiler, and a falling pressure gauge reading are the most common signs that the central he...
How to design a water supply system in a house — distribution systems, pressure, and circulation
Choosing how to distribute water in a single-family home is a decision you will live with for decades. The arrangement of pipes hidden in the scree...
Installation of a central-heating and domestic-hot-water expansion vessel – diagrams and principles
Even a perfectly selected expansion vessel will not protect the system from a dripping safety valve if it is installed in the wrong place. In this ...
Modernizing a gravity-fed heating system — is it worth switching to a closed system?
A vessel in the attic, thick steel pipes, and a manually fed boiler in the basement. This system heated Polish homes for decades and still operates...
How to inflate a diaphragm vessel? C.O. and C.W.U. pressure step by step
How do you inflate an expansion vessel? This is most often asked by people dealing with regularly dropping boiler pressure, dripping safety valves,...
Flushing a central heating system step by step. How do you clean the system?
A system that has operated without problems for several seasons can start making noises in the pipes and leaving radiators cold after the summer sh...
Water pump controller – how to choose one and what it protects against | IBO
Well-chosen automation means you simply do not have to think about the pump. Water flows when you turn on the tap, the pressure in the installation...
