Had Tristar come out for a gas fireplace that came with a house we bought. The fireplace would turn on then turn off after a minute or two. The tech was at our house for maybe 15/20 minutes. He vacuumed the fireplace and cleaned a piece under the logs as well as cleaned the glass....all this for the service call rate of $150. He did not smell gas so didn't check any valves. He also didn't even put the logs back in our fireplace correctly. $150 seems extremely high for what was done. Call around before deciding on these guys to save some cash.