Heating repair for a city whose winter grades as hard as its summer

What breaks in the long season

The furnace slept all summer and will not wake

November's standing story in this county. A furnace starting well runs a sequence you can hear from the basement door: the draft fan spins up first, then a hot surface ignites the gas, flame establishes, a sensor verifies the flame is genuine, and only then does the blower move air. Break the sequence anywhere and the furnace shuts itself down by design, because that shutdown is precisely what keeps unburned gas out of the house. Nothing about the summer wore these parts out; idleness did. Two members of the sequence suffer most from the quiet months, the ignitor and the flame sensor, and together they explain the gentlest repairs on this page: a sensor filmed over in a closed-up basement, an ignitor that sat unlit from April and simply got old in the dark. The season's first hard freeze is just the first occasion since spring that anyone has demanded the sequence, which is why identical calls arrive from street after street of the same vintage inside one week, a Lawrence ranch on Monday, a Beech Grove bungalow on Wednesday. Karen's log cards keep those streets by name.

The heat pump blows cool air on the coldest morning

No heating call in this market carries more innocent explanations than this one, and it opens the season every year. Begin with the steam cloud. On cold mornings the outdoor unit vents vapor like a kettle and gets reported as smoke; what you are watching is a defrost cycle, the machine flipping briefly into its summer direction to thaw frost off the outdoor coil, which in heating mode runs colder than the air around it and ices up quickly in Indiana's damp cold. During those minutes the indoor air can run cool, and the auxiliary strips exist precisely to bridge that gap. None of that is a malfunction. The genuine failures live beyond it: frost that builds and never clears between cycles, a unit steaming every few minutes without ever settling into heating, register air that stays cool for an hour at a stretch, or a reversing valve seized hard enough that the machine is cooling the house in January. Telling design from damage is a matter of rhythm: how frequently the steam appears, whether each cycle leaves the coil clean, and whether the thermostat reports the strips helping.

The backup heat took over, and the electric bill noticed first

Every heat pump in this region carries backup: resistance strips inside the air handler, sized to cover defrost gaps and the season's coldest mornings. Strip heat is also the most expensive warmth in the house, billed by the kilowatt, and when it silently assumes the entire load, because the outdoor unit quit, or lost its charge, or someone switched the thermostat to emergency heat during a cold night and never switched it back, the rooms stay comfortable and the electric meter is what confesses. A January bill at double December's is a heating symptom in this market; through a snap week, strips running around the clock, it can run past double. A system that warms evenly yet never cycles off is confessing in a quieter voice. Mention a moved bill when you call: in a heat pump house the bill is the diary, and the month it jumped dates the failure more precisely than any symptom you could describe.

The exchanger question, asked plainly

This is the finding nobody wants and the one this page will not dress up. A furnace's heat exchanger is the wall between the fire and the house's air. When it cracks, and exchangers crack at the end of long lives of expansion and contraction, the conversation stops being about comfort and becomes about carbon monoxide, which is odorless, patient, and not a subject for salesmanship in either direction. The honest shape of the finding is this: a cracked exchanger is not a repair. It is the end of that furnace, and any crew that offers to patch one is telling you something about itself. It is also not a finding to accept on one man's say-so in a cold house at nine at night. The evidence can be shown: the crack itself, the flame's behavior when the blower starts, the readings. Ask to be shown. A crew that found a real crack can show you a real crack, and a crew that cannot show you one has given you a different finding than it thinks. This page puts the subject in print, in advance, so the conversation at your door starts from the same page it does here.

The snap week asked for everything, and the system gave what it had

Every heating conversation in this region eventually arrives at two reference weeks: January 2019, when the state sat below zero, and December 2022, when the Christmas storm parked the whole region under freezing wind. Residential equipment is sized for cold nights; it is not sized for a state parked below zero for days, and a system that held a house near 60 through the worst of those weeks may have delivered everything its designers ever undertook to deliver. Sorting snap calls honestly means separating two piles, and a crew's honesty shows in whether it sorts them at all. Pile one holds genuine failures under continuous load: a blower motor that gave out on day three, a control board that quit, a defrost system overwhelmed by weather it meets twice a decade. Pile two holds houses where nothing broke; the week simply exceeded the design envelope, and the remedies there are insulation, air sealing, and recalibrated expectations, not parts. Get yours sorted before you buy anything. The sorting is the diagnosis.

The cold room, the warm room, and the lie between them

Somewhere between the furnace and the far bedroom, warmth is escaping, or it was never produced at full strength in the first place. Zoned plans across the growth ring add a suspect the unzoned stock never presents: the zone itself. A damper frozen shut, a zone board that has stopped relaying requests, a thermostat dark on the sleeping wing's wall: the furnace can be entirely sound and that wing still cold, because its request for heat never reached the fire. That territory is Kevin's bench, the low-voltage half of the house, and his opening question is whether the thermostat's report deserves belief at all, since a sensor drifted two degrees condemns a whole wing to a different season from the one the furnace thinks it is serving. Clear the controls and suspicion moves on: to the filter, because the one that finished the humid summer is the one heating season inherits, to a blower shedding speed by degrees, to ductwork bleeding into a cold crawlspace, to a heat pump whose drifted charge leaves it heating at partial strength all morning long. Distance and glass answer back. Each suspect carries its own price line, which is exactly why the sorting precedes the spending.

The dark screen and the tripped float switch

Look at the small things before the furnace does. Thermostat batteries die, and a blank screen is dead batteries as often as it is anything carrying a part number. A float switch can cut the controls' power too, tripped by a drain pan or condensate pump that filled during the summer cooling run, months before heat was ever requested, in houses where the furnace shares that drain. Placement lies politely as well: a thermostat roasting on a sunlit wall, or mounted close enough to a register to sample its own output, will report 70 degrees in a room your skin insists is 62. Not one of those is a furnace failure, yet every one gets billed as a furnace failure when nobody bothers to check the small things first.

A heat pump heats by running its summer backwards

Grasp a heat pump on its own terms and winter calls simplify fast: no second machine exists. The unit that cooled the house in August heats it in January with its flow reversed, one compressor, one refrigerant circuit, one blower, plus exactly two components summer never summons: the reversing valve that flips the flow, and the defrost control that keeps the outdoor coil free of frost. A winter breakdown in a heat pump house is therefore usually a story about those two additions, or about the strips waiting behind them, layered over a system whose summer health you already hold evidence about. So the heating call opens with the house too: which corridor, which town, and how yours recovered in the last snap your street remembers. A system that cruised the mild winters and sulks through a single freeze is telling a different story from one that has leaned on its strips every winter since the house went up. What you tell Karen becomes the visit's opening page. The visit turns the pages after that.

Why this page stands at the cooling page's full height

Heating earns its own full page here because this region's winter writes failures no mild market produces. A snap week, arriving every few years, puts every system in the county on continuous duty at once and publishes the results street by street. The long season does in five months what a gradual winter does anywhere: it ages ignitors, films sensors, and works blowers to their honest ends. A season that asks a furnace for five months lets a weak furnace hide in the shoulder weeks and be found in January. And a growing stock heats by reversing its summer machine, living its winter on defrost cycles and strip heat. This page imitates no Texas winter: the season here is long, deep, and judged on its own evidence. The freeze calls deserve a page written for them, and the launch stays at two services. Heat out on a freeze night? Call for same-day help, or send the free estimate and let Karen place the call on the corridor map.