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Houses in Carrollton and the north corridor
Long uniform tracts, ducts in attics that are genuinely dangerous to work in by midday, and a climate with both a severe summer and an occasional severe freeze.
An hour and a half, and a sheet you keep
Everything found and identified, rating plates photographed, model and serial numbers recorded. Then the readings: static pressure across the filter and coil, total airflow, refrigerant charge against the manufacturer’s target, temperature split, and the airflow at the registers in whichever room is the problem.
If there is a gas furnace, a combustion analysis and a heat exchanger inspection happen on that visit whatever you rang about, and where there is no working carbon monoxide alarm we fit one.
And on an attic installation, two things people rarely have checked: whether the drain pan has a working float switch, and whether the secondary drain has ever been tested. Both are cheap and both are the difference between a leak and a ceiling.
Four findings that account for most of it
The whole system is in the hottest place in Texas
An uninsulated attic here passes temperatures that make the ductwork and the air handler work far harder than their ratings assume, and every foot of duct crossing it loses cooling before the air reaches a room. Measured leakage on older runs is routinely a large fraction of total airflow. Sealing and insulating is unglamorous and frequently worth more than new equipment.
The drain pan has no working float switch
An air handler above a ceiling will leak eventually, and a float switch is what stops that becoming a ceiling. They fail quietly, they are rarely tested, and they cost very little. This is the single cheapest thing we find and fix in this town.
Upstairs and downstairs are two different buildings
One system serving both floors is doing two jobs at once, because the upstairs gains heat through the roof all afternoon and the downstairs does not. We measure them separately at the hour the complaint happens, and the answer is sometimes a damper, frequently duct sealing, and occasionally a second system.
Nothing was ever done about the freeze
A heat pump with failed auxiliary heat, an exposed condensate line, an outdoor unit that has never been looked at for winter. Every few years this matters a great deal for about four days. Checking it in October costs a fraction of finding out in January.
What we do in houses
- Diagnosis and repair
No cooling, no heat, short cycling, noise, a room that never matches. Measured, costed and repaired where a repair is right.
- Load calculation and replacement
Room by room, on the house as it stands now rather than on the size of the unit coming out.
- Attic duct sealing and insulation
Leakage measured, joints sealed, runs insulated, registers balanced against a target.
- Drain pans, float switches and condensate
Tested rather than glanced at, on every attic installation, every year.
- Zoning and the upstairs problem
Measured floor by floor at the hour the complaint happens, then an honest answer about whether a damper will do it.
- Gas appliance safety and freeze preparation
Combustion analysis, heat exchanger inspection, flue checked as installed, carbon monoxide alarms fitted where there is none, and an autumn check on everything that matters in a hard week.
Tell us what the house is doing
Which floor, which room, what time of day, and how long it has been like that. 75010 W Hebron Pkwy, Carrollton. Monday to Friday, 7am to 4.30pm.