# Ferrell's Air Conditioning & Heating > Family-owned HVAC for Shelbyville, KY and the surrounding counties since 1980. Carrier Factory Authorized, NATE-certified. Air conditioning, heating, heat pumps, ductless, indoor air quality, and geothermal. ## Main - [Home](https://ferrellsair.com/): HVAC services in Shelbyville, KY - [Services](https://ferrellsair.com/services): all HVAC services - [Service Areas](https://ferrellsair.com/service-areas): cities we serve - [About](https://ferrellsair.com/about): our story - [Contact](https://ferrellsair.com/contact): schedule service ## Services - [Air Conditioning](https://ferrellsair.com/air-conditioning) - [Heating](https://ferrellsair.com/heating) - [Heat Pumps](https://ferrellsair.com/heat-pump) - [Ductless](https://ferrellsair.com/ductless) - [Indoor Air Quality](https://ferrellsair.com/indoor-air-quality) - [Geothermal](https://ferrellsair.com/geothermal) - [Commercial HVAC](https://ferrellsair.com/commercial-hvac) - [Ductwork](https://ferrellsair.com/ductwork) - [HVAC-Related Electrical](https://ferrellsair.com/hvac-related-electrical) ## Learning Center - [Learning Center hub](https://ferrellsair.com/learning-center): HVAC guides — Learn, Compare, Act ### Learn - [How Central Air Conditioning Works](https://ferrellsair.com/learning-center/how-air-conditioning-works): Your AC doesn't make cold air — it moves heat out of your home. Here's the refrigeration cycle in plain English. - [How Home Heating Systems Work](https://ferrellsair.com/learning-center/how-heating-systems-work): Furnaces, heat pumps, and the heat exchanger that keeps combustion gases out of your air — explained simply. - [How Heat Pumps Work (Heating AND Cooling)](https://ferrellsair.com/learning-center/how-heat-pumps-work): One system that heats in winter and cools in summer by moving heat instead of burning fuel. - [How Ductless Mini-Splits Work](https://ferrellsair.com/learning-center/how-ductless-mini-splits-work): Targeted comfort with no ductwork — ideal for additions, bonus rooms, and homes without ducts. - [Indoor Air Quality Basics for Kentucky Homes](https://ferrellsair.com/learning-center/indoor-air-quality-basics): Filtration, humidity, and ventilation — the three levers that decide how healthy your indoor air is. - [How Geothermal HVAC Works](https://ferrellsair.com/learning-center/how-geothermal-works): The ground a few feet down stays ~55°F year-round. Geothermal uses that stable temperature for ultra-efficient comfort. - [HVAC Permits & Code Compliance in Shelby County & Central Kentucky](https://ferrellsair.com/learning-center/hvac-permits-and-code-compliance-kentucky): When your HVAC project needs a permit, why it matters for resale and insurance, and how we handle it for you. ### Compare - [HVAC Repair vs. Replace: How to Decide](https://ferrellsair.com/learning-center/repair-vs-replace-hvac): A simple framework — age, repair cost, efficiency, and comfort — to decide whether to fix or replace your system. - [Heat Pump vs. Furnace: Which Is Right for Your Kentucky Home?](https://ferrellsair.com/learning-center/heat-pump-vs-furnace): Efficiency, comfort, climate fit, and operating cost — how the two heating options stack up here. - [HVAC Efficiency & Cost-Value Guide (SEER2, AFUE, HSPF2)](https://ferrellsair.com/learning-center/hvac-efficiency-cost-value-guide): What the efficiency ratings mean, how sizing affects your bill, and how to weigh upfront cost against lifetime savings. ### Act - [When to Schedule HVAC Service (and What to Expect)](https://ferrellsair.com/learning-center/when-to-schedule-hvac-service): The signs it's time to call, what a visit looks like, and how Ferrell's keeps it honest and upfront. - [Why an HVAC Maintenance Plan Pays Off](https://ferrellsair.com/learning-center/why-an-hvac-maintenance-plan-pays-off): Two seasonal tune-ups keep your system efficient, protect your warranty, and prevent the breakdowns that cost the most. - [HVAC Glossary](https://ferrellsair.com/learning-center/glossary): 18 terms defined ## Resources - [Blog](https://ferrellsair.com/blog) - [FAQs](https://ferrellsair.com/faqs) - [Pricing](https://ferrellsair.com/pricing): honest, flat-rate HVAC pricing - [Financing](https://ferrellsair.com/financing): Wells Fargo financing on approved credit - [Maintenance Plan](https://ferrellsair.com/plans): Peace of Mind Program - [Free Second Opinion](https://ferrellsair.com/free-second-opinion) ## Company - [About](https://ferrellsair.com/about-us): 45+ years, family-owned - [Meet the Team](https://ferrellsair.com/meet-the-team) - [Gallery](https://ferrellsair.com/gallery): real photos of our work - [Reviews](https://ferrellsair.com/reviews): what our neighbors say - [Careers](https://ferrellsair.com/careers) ## Legal - [Privacy Policy](https://ferrellsair.com/privacy) - [Terms & Conditions](https://ferrellsair.com/terms) - [Accessibility Statement](https://ferrellsair.com/accessibility) - [Sitemap](https://ferrellsair.com/sitemap)