The answer to 'when to replace generator installation' is that you should typically replace your generator installation every 10-15 years, or sooner if it is not functioning properly. Generators are complex pieces of equipment that wear down over time, and regular maintenance and eventual replacement is necessary to ensure reliable power during outages.
Factors that may indicate it's time to replace your generator installation include frequent breakdowns, difficulty starting the generator, or poor performance during power outages. Additionally, if your generator is more than 15 years old, it may be worth considering a replacement, as newer models are more energy-efficient and have additional safety features.