Proper maintenance of system components keep HVACs operating at peak efficiency – implement a maintenance programme to ensure that all components including motors, pumps, fans, compressors, ducting and filters are intact and working effectively.
This not only conserves energy but also helps to extend equipment life and prevent costly breakdowns. Maintenance should be performed continuously on a regular scheduled basis – simple maintenance procedures can be undertaken in-house whilst more comprehensive maintenance interventions should be carried out by a qualified service provider – simple maintenance procedures include:
- Cleaning heat exchange surfaces
- Inspecting ductwork for air leakages – seal all leaks by taping or caulking
- Inspecting ductwork insulation – repair or replace as necessary
- Inspecting damper blades and linkages – adjust on a regular basis and clean the oil
- Cleaning or replacing air filters
- Inspecting and cleaning coils
- Inspecting coils and casings for leakage – seal all leaks
- Inspecting all room air outlets and inlets (diffusers, registers and grilles) – these should be kept clean and free of dirt and obstructions
- Lubricating motor and drive bearings
- Checking for over-voltage or low-voltage conditions on motors
- Checking excessive noise and vibration
- Keeping fan blades clean
- Inspecting piping for leakage at joints – repair as and when necessary
- Inspecting strainers and cleaning regularly
- Inspecting vents and remove all clogs – clogged vents retard efficient air elimination and reduce system efficiency
- Replacing leaking dampers on ventilation systems
- Ensuring condensing and evaporating devices are clean and well maintained – check that condensers are not obstructed by equipment or vegetation, for example
- Ensuring that the cooling plant is regularly maintained to avoid reduced levels of operational efficiency
- Replacing insulation on refrigerant pipework and paying specific attention to pipework located outside a building – insulation in poor conditions will affect the temperature of the refrigerant flowing through the system and, therefore, consumes more energy in maintaining the required temperature.
Electricity consumption can increase by up to 30% if regular maintenance is not undertaken.