Instruct: Classify Amazon reviews into positive or negative sentiment
Query: WISPERCOOL 3000

I PURCHASED THIS PRODUCT IN 2001 AND USED IN A 950 Sq FT.APARTMENT. IT WORKED WONDERFULLY. LATER I BOUGHT A HOME AND PUT IN NEW AIR COND. AND THE COST WAS AVERAGED ABOUT $350 DURING THE HOT MONTHS OF COLORADO. IN 2010 I PUT THE SAME WIPERCOOL 3000 (WHITCH SAT IN THE SHED FOR 7 YEARS) IN AN UNUSED BED ROOM WINDOW. AFTER SEVEN YEARS OF NOT USING I HAD TO REPLACE THE DRIAN PLUG. THATS IT. PLUGED IT IN, THE PUMP CAME TO LIFE AND THE SQUIRL CAGE WIRRED AS QUIET AS IF IT WERE NEW. IT KEEPS THE ENTIRE 1375 SQU. FT. RANCH STYLE HOME AT THE HIGHEST OF 75 DG. IN THE 95+ MONTHS OF COLORADO. THE MOTHLY COST IS AVERAGE $165. NOT TO MENTION THE FRESH AIR IT PRODUCES RATHER THAN RECYCELING THE SAME AIR CONDITIONED AIR.