HVAC Repair Platteville WI | Call Harkness Heating & Cooling

Short cycling is often caused by an oversized unit, a clogged air filter, or a faulty thermostat. It strains your system and increases energy costs. At Harkness Heating & Cooling, we perform a thorough diagnostic to pinpoint the exact cause—whether it's a simple fix like replacing a filter or a more complex issue like incorrect sizing from a previous installation. We provide honest repairs and solutions to restore proper, efficient operation and extend the life of your furnace.

Poor indoor air quality often stems from a dirty HVAC system, inadequate ventilation, or high humidity. We offer professional duct cleaning, install high-efficiency air filters and air purification systems, and provide solutions like humidifiers or dehumidifiers tailored to our local climate. Our services are designed to remove allergens, dust, and contaminants, ensuring your family breathes cleaner, healthier air throughout your Platteville home.

We recommend bi-annual tune-ups: one for your cooling system in spring and one for your heating system in fall. These visits include cleaning critical components, checking refrigerant levels, testing safety controls, and calibrating your thermostat. This proactive maintenance by Harkness Heating & Cooling helps prevent unexpected breakdowns, improves efficiency to lower bills, and directly addresses issues like short cycling and poor air quality before they become major headaches.