HVAC Louisville KY Tom Drexler Plumbing Air and Electric - br br Heating System Maintenance Performed by Licensed HVAC Technicians br br Maintenance for Your Louisville Area Home Heating Systems br br We want to remind you how important it is that your home heating system is working properly. Fuel bills can increase as much as 10-15 as a result of inefficient equipment operation. Systems that are not properly maintained are the main cause of low heating quality in any home. Our professional heating service includes a variety of tests to measure the efficiency of your heating system before and after tuning it up.