RED LINE can help you with home comfort from furnaces and waterheaters to air conditioners and air purification systems. REDLINE is here to help you and your family stay the right temperaturein the ever-changing Colorado weather. RED LINE Heating andCooling, LLC is a member of the Better Business Bureau. We havebeen a part of the Northern Colorado Community since 1995 andbelieve in four basic core principles, safety, efficiency,reliability and comfort.