Stable income: Somewhat stable

An HVAC business can offer a moderately stable income source for most people who try it. Based on online research and industry insights, while there is a decent baseline income, the revenue can be unpredictable at times due to seasonality and market fluctuations. Some months may be similar, while others could see significant variations. I'd rate it a 2 out of 3 because although there is potential for consistent earnings, factors like weather conditions and economic changes can impact income stability.