Owner's checklist: preparing the boiler room for the heating season

Most heating failures occur during the first serious freeze — when the system comes under full load after a summer standstill. Simple preventive maintenance at the end of summer saves nerves and money. **Pre-season checklist** 1. Check the system pressure (typically 1.2–1.5 bar when cold). 2. Check the air pressure in the expansion vessel. 3. Bleed air from radiators and high points. 4. Drain sludge from the [separator](/catalog/separatory) and low points. 5. Check the operation of [circulation pumps](/catalog/nasosy) — start-up, no unusual noise. 6. Inspect connections for leaks and signs of corrosion. 7. Check the operation of the make-up unit and safety valve. 8. Test the [controls](/catalog/avtomatyka) and outdoor temperature sensor. 9. Check the flue draw and condition of the chimney. 10. Confirm that backup power for the pumps is available. **For residential associations** Additionally, check riser balancing — after summer, the settings of the [balancing valves](/catalog/balansuval-klapany) may have shifted. If the system includes a separator and quality Termojet piping, preventive maintenance takes less than an hour. A boiler room ready for the season means peace of mind through the coldest days.