Furnace, heat pump, or gas system — when the heat won't come on in a Calhoun winter, we measure the real cause before we touch a part. Most no-heat calls are a low-cost repair, not a replacement.
Updated June 2026 • Written by the team at Anderson Heating, Air & Insulation, serving Calhoun since 1978 🐾
When your heat quits, the system has usually lost the ability to make or move heat — it hasn't simply died. On a furnace the common causes are a failed ignitor, a dirty flame sensor, a clogged filter starving airflow, or a tripped safety; on a heat pump it's often a low charge, a reversing valve or defrost issue. The honest way to know is to measure — temperature rise, refrigerant pressures, airflow — not to swap parts and hope. And most no-heat calls are a same-day repair, not a $10,000 replacement.
A heating system has two jobs — make heat (or pull it from outside, with a heat pump) and move it through the house. When the heat won't come on, one of those jobs has failed. A good diagnosis figures out which, instead of assuming the whole unit is bad and reaching for a quote on a new one.
With gas heat, we don't cut corners. A furnace that short-cycles, smells like burning, or keeps tripping its safeties is telling you something. As part of a no-heat or short-cycling diagnosis we check combustion and the heat exchanger — because a cracked heat exchanger can leak combustion gases into your home. If we find a real safety problem we'll tell you plainly. If it's a simple repair, we'll get your heat back, often the same visit.
Most shops can only look at the box. Anderson is a building-science company — we run six blower doors and six duct blasters and treat your house as one connected system. So when a heat pump 'won't keep up,' we can prove whether it's a charge problem, an airflow problem, or simply ductwork leaking your heat into the attic — and fix the real cause instead of selling you a system you don't need. We repair first and replace only when the measurements say so.
We'll diagnose the real cause and quote the actual repair before any work starts — and tell you honestly whether it's a repair or a replacement.
Call (706) 629-0749If the blower runs but the air is cool, the system is moving air but not making heat. On a gas furnace that's usually a failed ignitor, a dirty flame sensor, a tripped high-limit from restricted airflow, or a gas issue. On a heat pump it's often fan-only/defrost, a reversing-valve problem, or a low charge. We measure temperature rise, pressures, and airflow rather than swapping parts and hoping.
Almost always a repair — an ignitor, flame sensor, capacitor, contactor, or clogged filter. We repair first and only recommend replacement when the numbers say a repair won't last or won't pay off (a cracked heat exchanger, a failed compressor on an old system), and we'll show you the measurements behind that call.
A furnace that short-cycles, smells like burning, or trips its safeties is telling you something — and with gas heat, safety comes first. A cracked heat exchanger can leak combustion gases, so we check combustion and the heat exchanger during any no-heat diagnosis. If it's a real safety issue we'll tell you plainly; if it's a simple repair, we'll get your heat back.
Yes — furnaces, heat pumps, and dual-fuel. Heat pumps depend on a correct charge, defrost, and good airflow to keep up when it's cold. Because we measure pressures, airflow, and duct leakage, we can tell whether a heat pump that's 'not keeping up' needs a repair, a charge correction, or just a sealed duct.