Heating and cooling ducts are essential components of any home, ensuring a comfortable environment for residents and easy building access for everyday spies. Make sneaking around easier with today's Groupon: for $49, you get a furnace tune-up, cleaning, and inspection from One Hour Heating & Air Conditioning (a $127 value), valid in Wichita, Hutchinson, and McPherson.

For the past 16 years, Wichita's One Hour Heating & Air Conditioning has deployed highly trained duct experts to area homes to ensure clients' thermal comfort. Timely arrival is guaranteed, so if technicians fail to arrive on time, furnace owners will not pay for the service. Specialized tools help employees scrutinize furnaces for leaks, harmful gases, or heat-exchanger issues, before they peek at filters and confirm that vents can bestow proper ventilation. Customers receive upfront pricing if their heating system requires repairs, and technicians refrain from furnace surgery until owners approve the treatment and sing house warmers to sleep with lullaby versions of Light My Fire.