NEW YORK ( TheStreet) -- Star Gas Partners (NYSE: SGU) has been upgraded by TheStreet Ratings from hold to buy. The company's strengths can be seen in multiple areas, such as its revenue growth, solid stock price performance, increase in net income, attractive valuation levels and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity. Star Gas Partners, L.P. operates as a home heating oil distributor and services provider in the United States. It provides its services to residential and commercial customers to heat their homes and buildings. The company has a P/E ratio of 14.3, equal to the average specialty retail industry P/E ratio and below the S&P 500 P/E ratio of 23.2. Star Gas has a market cap of $364.9 million and is part of the services sector and specialty retail industry. Shares are up 1.5% year to date as of the close of trading on Monday.