Instruct: Classify a given review into positive or negative sentiment.
Query: No better than the worst programmable thermostat I've purchased

... And I've purchased and installed several in various homes/apts. Installation wasn't any better or worse than others, but this one... I couldn't even get access to the controls without pulling out my toolbox! ARGH!!!!As for doing its job... It was fine for AC, but now that I need the central heating to work, this thermostat isn't!