Frequently Asked Questions

If your furnace is over 15 years old and needs major component work like a cracked heat exchanger or failed blower motor, replacement often costs less long-term than repeated repairs. Older systems also run less efficiently, adding $30–$80 monthly to heating bills compared to modern high-efficiency models.

Technicians inspect the heat exchanger for cracks, test ignition components, check gas pressure, clean the blower assembly, and verify proper airflow through supply and return ducts. These checks catch safety issues like carbon monoxide risks and prevent mid-winter breakdowns when furnaces run continuously during Central Ohio cold snaps.

Oversized furnaces cycle on and off too frequently, wearing out ignition parts and creating uneven temperatures between rooms. Undersized systems run constantly without reaching thermostat settings. Proper sizing accounts for home layout, insulation levels, and ductwork design to balance comfort with efficiency.

Modern heat pumps work efficiently down to 25°F and can operate lower with supplemental heat strips. Central Ohio winters average 20–30°F most days, well within efficient heat pump range. Backup electric heat activates automatically during extreme cold, but most winter days rely entirely on the heat pump.

Heat pumps use reversing valves to switch between heating and cooling modes, adding components that don't exist in standard AC units. Technicians check both heating and cooling operation, refrigerant charge in both modes, defrost controls, and the reversing valve itself—failures here prevent the system from switching modes properly.

Heat pumps need service twice yearly because they run year-round for both heating and cooling. Schedule maintenance in early spring before cooling season and again in fall before heating begins. This catches refrigerant leaks, worn contactors, and dirty coils before they cause breakdowns during temperature extremes.

Leaking ductwork in unconditioned spaces like attics loses heated air before it reaches intended rooms, creating temperature differences. Disconnected or crushed ducts, undersized return air paths, and improperly balanced dampers also prevent consistent airflow. These issues force furnaces to run longer while some rooms stay cold.

Call immediately if you smell gas, hear unusual banging or screeching from the furnace, see visible cracks in the heat exchanger, or notice soot buildup around burners—these signal safety hazards. Complete loss of heat during subfreezing temperatures also requires urgent response to prevent frozen pipes.

System size requirements, equipment efficiency ratings (SEER), existing ductwork condition, and electrical panel capacity all influence pricing. Homes needing ductwork modifications, electrical upgrades, or multi-zone systems cost more than straightforward replacements. Higher-efficiency models reduce monthly utility bills but increase upfront investment.

Pre-season service identifies refrigerant leaks, worn capacitors, and dirty coils before hot weather creates peak system demand. Capacitors fail most often during first heat waves when units suddenly run 12+ hours daily. Catching these issues in May prevents emergency calls during July's 90°F stretches.

Ducts in attics and crawl spaces develop disconnected joints, holes from rodents, and crushed sections from stored items or insulation work. These hidden failures waste 20–40% of conditioned air, forcing HVAC systems to run longer and creating dusty, uncomfortable rooms that never reach thermostat settings.

Undersized ducts restrict airflow and force blowers to work harder, while gaps at duct joints leak expensive conditioned air into attics and basements. Poor duct design creates pressure imbalances that reduce system efficiency by 30% or more, negating savings from high-efficiency equipment upgrades.

Yes — Metro Comfort Systems provides emergency heating and cooling repair for homeowners in Powell, Dublin, Lewis Center, Delaware, Westerville, and Worthington. If your furnace stops working overnight or your AC fails during a heat wave, call us. Have your system's brand, approximate age, and the specific symptom ready so our technician can arrive prepared.

Same-day service is available for heating and cooling emergencies throughout the Powell area. Calling early in the day improves the likelihood of a same-day appointment, but emergency calls are accepted outside normal business hours as well. Having your system's model information on hand helps the technician bring the right parts on the first visit.

Check your thermostat settings and circuit breaker before calling, since a tripped breaker or incorrect mode setting is sometimes the only issue. If the system still won't run after those checks, contact an HVAC technician right away — prolonged heat exposure is a health risk, and emergency service is available for situations that can't wait until the next business day.