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| Comfort Zone celebrates 10 years!- 11/16/2011 |
| It was a great time, thanks to everyone that attended!» read more |
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| Dakota Contractor Digs New Technology- 6/1/2011 |
| Randy Mathern has been in the business for 36 years — ever since he graduated with a refrigeration degree from the North Dakota State School of Science. But it wasn’t until 2001 that he decided to start his own company, Comfort Zone Heating and Air.» read more |
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| Increased job opportunities in the energy sector- 6/11/2009 |
| Click to watch clip» read more |
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| Fiesta Villa, a local restaurant in Bismarck, chooses geothermal for their new addition.- 6/9/2009 |
| Click to view clip» read more |
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| Randy Mathern, President of Comfort Zone, spoke at the Bismarck Sustainability Series- 5/11/2009 |
| Randy Mathern, President of Comfort Zone, spoke at the Bismarck Sustainability Series Monday, May 11th 2009. » read more |
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| Comfort Zone's new location- 5/10/2009 |
| The Bismarck Mandan Chamber of Commerce celebrates with Comfort Zone in their new, expanded location at 1313 Republic St., Suite C in Bismarck» read more |
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