Certified class-A contractors from Mark Hurm & Company boost the performance of home heating systems to stave off winter's chill. Professional heat misers scrutinize the system to ensure controls, wiring, and belts behave properly and keep their hands to themselves. A lubrication of moving parts restores smooth operation, and worn-out air filters are retired, making way for a free replacement with younger, heartier stock. Heat pumps enjoy special attention as their condenser coils get checked, cleaned, and asked to prom, and gas systems undergo an equally thorough analysis of burners and combustion chambers. The technician cleans condensate drains and makes final adjustments to the entire system for optimum efficiency.