Before temperature control devices, humans were forced to keep toasty in winter by filling their pockets with cream of wheat and cool off in summer by dating a snowman. Keep comfortable without having to deal with your significant other’s carrot nose with today's Groupon at ARS/Rescue Rooter.

• For $149, you get a new thermostat and an air-conditioner tune-up (a $338 value).
• For $25, you get an air-conditioner tune-up ($49 value).

ARS/Rescue Rooter's team of trained, courteous specialists performs an array of air conditioning, heating, and plumbing services nationwide. Regular seasonal maintenance prolongs the life of air-conditioner units and enables them to run efficiently, saving homeowners from grievous energy waste and incurring the righteous wrath of eco-conscious polar bears.

Highly skilled HVAC technicians begin by inspecting the air-conditioning unit's coolant levels and pressure, making sure the system operates at full potential. The evaporator coil, condenser, and condensate drain receive a thorough inspection and cleaning, followed by the AC-whisperer checking over the compressor amps, outdoor disconnect, and condenser-fan motor and blades. Finally, the technician installs a brand new Easy Reader Thermostat ($289) and calibrates it to ensure the accuracy of its order-barking to the furnace and AC unit. Once everything runs in fine working order, the homeowner receives a completed tune-up checklist detailing every inspection performed, which items required repair, and how many ghosts of 16th-century pirates were haunting the air conditioner ($49).

Local ARS/Rescue Rooter repairmen only visit homes in the greater Tuscon area, as far as one hour from downtown.