Heating and Furnace Repair · Tomball
Heater and Furnace Repairs
Cold air from the vents, a furnace that clicks and never lights, a heater that shuts off after a minute. We find the failed part first and tell you what it is.
Cold air, short cycles, clicking with no flame: five parts to check first
A gas furnace has a short list of parts that decide whether it lights and stays lit. The hot surface igniter glows to light the burners, and it cracks with age, so the furnace runs its start-up sequence and never gets flame. The flame sensor is a thin rod that proves the burners lit; once it is coated, it tells the control board to shut the gas off a few seconds after ignition. That is the furnace that lights, drops out and tries again. Neither one is a reason to start talking about replacement.
Three more findings show up as symptoms you can describe over the phone. A high limit switch trips when the furnace overheats, often from a clogged filter or a blocked return, and it leaves you with short cycling: heat for a minute, then the blower alone. A failing inducer motor can click, hum or refuse to start, and the furnace will not light without it. A gas valve that does not open sounds like everything is working while the house stays cold. If the blower is pushing cold air, say so when you call. It narrows the search.
Technician at an attic gas furnace, control board and gas flex open
The furnace is in the attic, so getting to it is part of the repair
Plenty of homes around Tomball put the furnace or air handler in the attic, on a platform behind a hatch, with the gas line, flue and condensate drain running alongside it. That changes the repair. A technician has to carry tools and parts up a ladder, work in a tight space, and still reach the igniter, the sensor and the control board without disturbing the venting. When you call (281) 351-5354, tell us where the furnace sits and what the thermostat is doing, so the right parts ride up with the technician.
Access also decides how a part gets swapped. An inducer motor or a control board is a short job at floor level and a slower one under a low roof deck, so the visit is planned around the attic instead of discovering it on arrival. If a part has to be ordered, the plan gets said plainly: what failed, what is coming and when. Heating repair around Tomball is mostly that sequence. Find the failed part, get the right one, and put it in.
The gas side gets checked before the furnace is handed back
A furnace that heats again has not necessarily been made safe. Before the panel goes back on, the gas connection at the valve and the flex line get checked for leaks, the flame is watched for a steady burn, and the flue and venting are looked over to be sure exhaust leaves the house instead of staying in it. Cracked heat exchangers and blocked vents are the findings that matter most, because they are the ones a homeowner cannot see from the living room.
If something on that list is wrong, it goes on the work order as a finding, in plain words, with the repair written beside it, and the decision stays with you. ASR Mechanical holds Texas HVAC license TACLA85163E and has worked out of Commercial Park Road in Tomball since 1997, family owned, so the company that finds a problem is also the one that answers the phone about it afterward.
“They diagnosed our problem straight away and were able to get the part and replace it the next day.” Joseph Cluff, Google review. Texas HVAC license TACLA85163E.
Found
What the blower is telling you
Hot surface igniter
The furnace starts its sequence and never gets flame.
Flame sensor
It lights, runs a few seconds, shuts off and tries again.
High limit switch
Heat for a minute, then the blower runs alone: short cycling.
Inducer motor
Clicking, humming or silence, and no ignition.
Gas valve
Everything sounds normal and the house stays cold.
Same symptom, different part, which is why the part gets named before the price does. If the system turns out to be at the end of its life, the furnace installation page covers what a replacement involves, and the maintenance page covers keeping a working furnace that way. Questions now? Call (281) 351-5354.