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A recent survey shows that 60% of the power utility bill accounts for the heating system, so a reliable, efficient boiler can make a significant difference. The modern boilers are more energy-efficient, around 95% and cost effective than previous models. Most homeowners are unaware of the negative impact of inefficient and old boilers. If the installed boiler is six to ten years old, it needs a replacement.

Lower Stack Temperature Is Optimal

Boiler installation Edinburgh recommends if the boiler needs to be changed after inspection. If the boiler is frequently serviced, the efficiency remains intact, and the lifespan increases. An optimal, efficient boiler reduces operating costs considerably in an energy-efficient boiler least amount of flue exhaust at the lowest possible temperature. The boiler sucks fresh air, heats it up and sends it to the stack. The lower stack temperature is optimal because as the temperature rises, more flue gas is generated. On the other hand, the system boiler heats water to produce steam and uses it to heat the room. Following some simple steps increase boiler efficiency.

Some Simple Steps 

Lower the operating pressure of the steam boiler and the temperature of the hydronic boiler when the outside temperature is not too low.


An installed economizer reverts back the wasted flue gas into the boiler. If your boiler does not have an economizer, install it, or if it is not operating properly, service it. The economizer prevents fuel wastage and entering cold water into the boiler.

Amount of Oxygen

The correct amount of oxygen is essential for combustion, which subsequently impacts the boiler efficiency. An insufficient amount of oxygen will oxidize the carbon fuel, releasing carbon monoxide, which is hazardous. On the other hand, the extra cold air needs more energy to heat up and transfer to the stack, wasting fuel. The right amount of air is required for optimal operation. Tuning the burner regularly ensures the correct amount of air for combustion.

Insulation of Valves

During the maintenance job, the insulation from valves is removed and never put back. The exposed valve to cold temperature leads to excessive heat loss. Insulated valves increase boiler efficiency.


After years of build-up, filth covers the fireside of boiler pipelines. This happens more in older models. The dirt cover starts to act as an insulator, decreasing heat transfer rate and escalating fuel use. Due to the low heat transfer rate, the hot gas is unable to pass the required amount of heat to the cold water. In the boiler maintenance job, the soot is removed, and boiler tubes are cleaned and inspected. This increases overall boiler efficiency.

The inflowing combustion air is heated on a burner ablaze. If the inflowing air is warmer, it requires less heat energy to generate the same amount of steam. The water tank of the boiler needs to be cleaned and free from cracks. To ensure it is in proper condition, monitor the waterside of the boiler regularly. Scrap the mud drums to ensure the heat flow from metal to water seamlessly. Sediments accumulate due to high water hardness and chemicals. Contact Boiler installation Edinburgh for maintenance. The technicians will remove the scale, ensuring proper heat transfer.

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