by snix@502hvacpros.com | Oct 7, 2026 | HVAC Maintenance
An HVAC warranty can make a new system feel less risky, but the words “10-year warranty” rarely mean that every repair is free for ten years. Most warranties separate the equipment manufacturer’s parts coverage from the contractor’s labor coverage, and both can have... 
by snix@502hvacpros.com | Oct 7, 2026 | Indoor Air Quality
A whole-house humidifier connects to a ducted heating system and adds moisture while the blower distributes warm air. It can make winter air more comfortable when indoor humidity is consistently low, but it is not a cure-all for drafts, water leaks, or a poorly... 
by snix@502hvacpros.com | Oct 7, 2026 | Indoor Air Quality
Winter air can make a Louisville home feel dry, dusty, and stuffy at the same time. The furnace is usually not “drying out” the air. The bigger cause is cold outdoor air leaking in through gaps around the house; once that air is warmed indoors, its relative humidity... 
by snix@502hvacpros.com | Sep 18, 2026 | Heat Pump Systems
On an all-electric heat pump system, emergency heat shuts the heat pump off and runs only the electric resistance strips in your air handler — which typically costs roughly two to three times as much to run as normal heat pump heating in Louisville winter weather.... 
by snix@502hvacpros.com | Sep 18, 2026 | Heat Pump Systems
Steam rising from your outdoor unit in winter is normal — it means your heat pump’s defrost cycle is working as designed. Frost can form on the outdoor coil even when the air is in the upper 30s to low 40s, because the coil surface runs well below the outdoor... 
by snix@502hvacpros.com | Sep 18, 2026 | HVAC Maintenance
One of the most common reasons a furnace blows cold air is a thermostat fan setting left on “ON” instead of “AUTO” — a two-second fix that many homeowners overlook. A clogged air filter can make the furnace’s high-limit switch trip,...
