Heating & Air Conditioning in Fox Lake, IL

Combs Heating & Cooling provides heating and cooling service throughout Fox Lake and the surrounding Illinois area. A dripping condenser, an iced-over coil, or a dead furnace — call and talk to a local tech who's seen it before.

AC installation & replacement

Properly sized new systems with load calculations, from value units to high-SEER equipment.

Furnace installation

High-efficiency furnace installs with correct venting, sizing, and thermostat setup.

Emergency service

Urgent no-heat and no-cool calls handled fast, before small faults become failures.

Ductless mini-splits

Single and multi-zone systems for additions, garages, and rooms that never cool right.

Seasonal tune-ups

Preventive maintenance that keeps efficiency high and catches cheap fixes early.

Thermostat installation

Smart and programmable thermostat wiring, setup, and configuration.

Heating & Cooling in Fox Lake, Illinois

From lake-effect cold to humid continental summers, Fox Lake systems face some of the widest temperature ranges in the country — furnaces that handle subzero Januaries and air conditioners that carry 95-degree Julys. Freeze-thaw cycles are hard on outdoor units and refrigerant lines. Local providers like Combs Heating & Cooling understand these conditions and service equipment accordingly.

Common HVAC Problems in Fox Lake

Strange noises at startup

Grinding, squealing, or banging at startup often signals worn bearings, a loose blower wheel, or delayed furnace ignition — all worth addressing before they become breakdowns.

Uneven temperatures between floors

Multi-level homes often suffer hot upstairs rooms in summer. Duct adjustments, zoning dampers, or a ductless unit for the problem area are common solutions.

Thermostat not matching room temperature

When rooms feel different from the set temperature, the fix may be as simple as thermostat placement or as involved as duct balancing and zoning.

Frozen evaporator coil

Ice on the indoor coil chokes cooling entirely. Restricted airflow or low refrigerant are the usual causes, and running the unit while frozen risks compressor damage.

Why Choose a Local Illinois Company

Established local providers stand behind their work long after the invoice is paid. Same-area service means faster response when the weather turns and equipment fails at the worst moment. Local technicians know the housing stock — from older homes with aging ductwork to new builds with high-efficiency systems.

Seasonal Tips for Illinois Homes

Install a carbon monoxide detector on every floor if you heat with gas or oil, and check batteries each fall.
Test the furnace on the first cool fall day, not the first freezing night, so any repair happens before the rush.
Seal drafts around doors and windows — reducing heat loss lets the furnace cycle less and last longer.
Keep snow and ice cleared from heat pump outdoor units and exhaust vents to prevent shutdowns and carbon monoxide risks.

Frequently Asked Questions

Why is my AC running constantly in summer?

During heat waves some runtime is normal, but nonstop operation with poor cooling suggests low refrigerant, dirty coils, duct leaks, or an undersized system. A service visit can pinpoint which.

How can I lower my heating and cooling bills?

Regular maintenance, fresh filters, a programmable thermostat, sealed ducts, and sensible temperature setbacks together typically trim 10–25% off energy use without sacrificing comfort.

What are signs of duct problems?

Rooms that never reach temperature, whistling sounds, dusty air, and high bills all point to leaky or unbalanced ductwork. Sealing and balancing often deliver the biggest comfort improvement per dollar.

Should I repair or replace my system?

A common rule: if the unit is past 12 years old and the repair costs more than a third of replacement, replacement usually wins. A technician can weigh age, efficiency, refrigerant type, and repair history for your specific unit.

Do heat pumps work in Illinois?

Modern cold-climate heat pumps perform well across Illinois's typical temperature range, and they both heat and cool. The right fit depends on your home's insulation and existing ductwork.