Why Your Furnace Struggles During Chicago-Area Cold Snaps — Causes & Fixes

Chicago Residents know just how brutal the winter season can be. In addition to the personal discomfort that comes with the extreme cold, your furnace is often pushed to its limit on frigid nights. The extra strain will cause wear and tear on your equipment and may even result in a breakdown if a lingering problem is exacerbated during the period of intense activity. Although there are several potential causes for a furnace struggling or failing during a cold snap, the good news is that most of them have straightforward solutions. The following guide will help you diagnose and rectify any winter-related problems with your furnace.

Airflow Issues

Before examining your furnace, it is wise to confirm if your problem is actually an airflow issue. Blocked ventilation ducts and clogged air filters can dramatically reduce the performance of your heater. Clearing vents is as easy as moving any objects, rugs, etc. that are too close to the covers in each room. Duct covers require at least six inches of clearance to promote optimal airflow. As for dirty air filters, replacing them with clean ones should provide a boost of heat throughout your home. Replacing filters every one to two months will help you maintain ideal performance all year.

Improper Sizing and Load Calculation

If a furnace is slightly too small for a building, it can still keep it reasonably comfy under normal conditions. But as soon as it must confront a cold front, undersized furnaces will crumble under the heightened pressure. If you recently made home additions or renovations, you may need a new furnace that provides full coverage. The easiest way to know if your furnace is suitable for your home is to order a load calculation service. Professionals will measure the exact specifications needed to maintain warmth evenly throughout your abode.

Thin Insulation or Cracked Seals

Another external factor that influences furnace performance is the quality of home insulation and air sealing. When there are gaps in your home’s defenses, expect cold air to seep in and warmth to escape through those openings. When combined with an intense cold snap, this might be the final straw that causes your furnace to buckle. Replacing the insulation around your home will improve heating efficiency. Especially if you focus on problem spots like the basement or attic.

When you notice small cracks in the walls, floor, or ceiling, use caulk to mend the gaps as soon as possible. You may need special sealant sprays for deeper gashes. Next, check the weather strips around your windows to ensure no gusts of air can get through. These should also be replaced in any areas where you notice air seeping in or out.

Fuel and Combustion Woes

Intense cold helps condensation form on crucial combustion and fuel supply components. This condensation can block the fuel delivery system and force your furnace to shut down. You may also notice a flickering or yellowed pilot light. These issues typically require a professional touch to safely rectify them.

Thermostat Malfunctions and Poor Placement

When your thermostat malfunctions or is poorly calibrated, the inaccurate readings will hamper furnace performance. Improper placement, such as by drafts or heat sources, will also cause a thermostat to misread. If a reset doesn’t fix your thermostat issue, then your best bet is to call Fire 'n' Ice Heating & Cooling Inc. for expert advice and solutions you can count on.

Aging or Unsuitable Equipment

Older furnaces use single-stage burners with a fixed output limit. If a cold snap exceeds the demands of your device, it is liable to break down. Aging units in general become increasingly prone to failing during intense storms and cold fronts. Opting for a modern furnace with higher AFUE and additional burner components is the most effective way to reduce the likelihood of stress-related breakdowns. The greater energy efficiency and potential smart functionality provide further reasons to upgrade an aging furnace.

Get Outstanding Service Today

Fire 'n' Ice Heating & Cooling Inc. has provided top-notch HVAC services to numerous communities within the Chicago area for over four decades. As a family-owned business, we take home comfort seriously, and safety is always a top priority. Our upfront pricing, honest advice, and extensive knowledge of HVAC trends help us stay a cut above the rest. Whether you need help with furnace repair, maintenance, hybrid heat pumps, or general HVAC services, rest assured that your home is in great hands.

For furnace and heating services in Downers Grove, IL, contact Fire 'n' Ice Heating & Cooling Inc. today!