Jacobs Air Conditioning & Heating
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Claim This BusinessAbout Jacobs Air Conditioning & Heating
Jacobs Air Conditioning & Heating has kept southern Illinois comfortable for 26 years as a family-owned contractor. Based in Carbondale with a 4.9-star average from 349 verified reviews, the company serves Carbondale, Marion, and more than a dozen surrounding communities from Alto Pass to Zeigler. Homeowners throughout Jackson, Williamson, and Union counties routinely call Jacobs when furnace coils freeze during polar inversions or when summer heat pushes AC compressors past their limits, trusting a team that has weathered every season the region delivers.
What separates Jacobs from regional competitors is their commitment to geothermal systems and heat pump technology. As a dealer offering dustless mini-splits and energy-efficient geothermal installations, they help homeowners in Carbondale and Marion secure utility rebates while reducing monthly heating and cooling expenses. Every repair and installation carries a documented 100% satisfaction guarantee, meaning the crew returns to correct any deficiency until the homeowner confirms the fix meets expectations. This guarantee appears repeatedly in reviewer feedback as more than marketing language.
Reviewers consistently credit specific technicians with solving problems that stumped previous contractors. When Naomi Roberts needed a complete furnace and AC replacement, Jim performed the on-site appraisal while Eli led the installation crew, completing both units in a single day as promised. For Dale Ritzel's greenhouse heat pump installation in November 2024, Eli and Jim removed a non-functioning gas heater and installed a mini-split system with meticulous attention to weather sealing in an unconditioned space. Craig Hansen's review documents multiple calls spanning mower damage to freon lines, thermostat replacements, and furnace purchases, noting transparent pricing and timely responses across every interaction.
What Customers Say
All seven readable reviews award five stars, with three specific technicians named positively across multiple jobs. Reviewers emphasize same-day emergency availability, transparent pricing, and clean-up practices after installations, suggesting strong service consistency.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–4 PM |
| Tuesday | 8 AM–4 PM |
| Wednesday | 8 AM–4 PM |
| ThursdayToday | 8 AM–4 PM |
| Friday | 8 AM–4 PM |
| Saturday | Closed |
Services
AC Repair & Replacement
Diagnostic services, refrigerant recharges, compressor repairs, and full cooling system replacements for residential properties.
Heating System Service
Furnace and boiler repairs, tune-ups, and new unit installations including gas heating system conversions and removes obsolete equipment.
Heat Pump Installation
Ductless mini-split systems and traditional heat pump installations for supplemental zone heating and cooling.
Geothermal Systems
Energy-efficient ground-loop heating and cooling installations that reduce long-term utility costs for qualified homes.
Indoor Air Quality
IAQ solutions including filtration upgrades and ventilation improvements to address allergens and humidity balance.
Commercial HVAC
Heating, cooling, and ventilation services for small commercial properties and retail spaces in the service region.
Preventive Maintenance
Annual tune-up services for AC and heating systems designed to prevent mid-season failures and extend equipment life.