Comfort Systems (FIX Quick QuoteFIX - Free Report) reached a significant support level, and could be a good pick for investors from a technical perspective. Recently, FIX broke through the 20-day moving average, which suggests a short-term bullish trend.

The 20-day simple moving average is a popular trading tool. It provides a look back at a stock's price over a 20-day period, and is beneficial to short-term traders since it smooths out price fluctuations and provides more trend reversal signals than longer-term moving averages.

Similar to other SMAs, if a stock's price moves above the 20-day, the trend is considered positive, while price falling below the moving average can signal a downward trend.

Shares of FIX have been moving higher over the past four weeks, up 9%. Plus, the company is currently a Zacks Rank #1 (Strong Buy) stock, suggesting that FIX could be poised for a continued surge.

The bullish case solidifies once investors consider FIX's positive earnings estimate revisions. No estimate has gone lower in the past two months for the current fiscal year, compared to 3 higher, while the consensus estimate has increased too.

With a winning combination of earnings estimate revisions and hitting a key technical level, investors should keep their eye on FIX for more gains in the near future.