Before heating systems provided an easy way to keep homes toasty in the winter months, families were forced to burn snowmen for warmth or lasso southbound rides on migrating geese. Suss out answers to climate conundrums with today's Groupon: for $40, you get $80 worth of repairs or maintenance from Protech Heating and Air Conditioning.

Protech's technicians transform stuffy homes into climate-controlled havens by maintaining well-behaved systems, repairing cranky units, and installing temperature-transforming machines. Avoid a future meltdown and optimize your chill factory's output with a one-hour air-conditioning unit tune up ($80). The Protech Air Care Plan ($119) schedules two seasonal house calls for the year—in the spring, Protech technicians submit air conditioners to a battery of diagnostic exercises and fine-tunings, including measuring electric flow in blower motors and cleansing the air filter's clogged pores with an avocado mask; in the fall, heaters run through the paces with a thorough appraisal, including efficiency-maximizing gas pressure adjustments and a connections check to sniff out potential leaks.

Technicians guarantee their work and describe the prices of needed repairs in advance, ousting hidden costs in a romping round of explain-and-seek. All technicians pass an extensive background check and serve an apprenticeship in the Yukon to hone empathy for heat-deprived customers. Today’s Groupon may also be applied to more extensive repairs, restoring an affable climate to homes afflicted by major-league snafus.