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Fifteen pages, grouped the way the decision actually gets made out here: what is it doing right now, was it ever the right size for the house, is it worth fixing, what happens in October, and who — if anyone — ever checks the work.
Manual J, why oversizing is the default error on builder installs, and why outside a city nothing external ever checks that it was done. The most useful page on this site.
30.3% of the county went up between 2010 and 2019 with base-tier equipment installed to a price. It is 7 to 16 years old now and out of every warranty that mattered.
Which cities require a mechanical permit and which require contractor registration — and why unincorporated county, and every city ETJ, has neither.
A 2014 first failure, a 1980s third failure and an acreage system thirty miles out are three different repairs. Working out which one you have.
What counts as an emergency, what after-hours pricing looks like, and an honest word about response time on the far side of an 885-square-mile county.
The county’s two replacement waves, what a changeout actually costs, and the seven things that belong in the quote.
Heat comes out of the same cabinet the cooling does, which is why almost no heating decision in this county is a heating-only decision.
Ignition assemblies, flame sensors, whatever has moved into the burner compartment since spring, and the cracked heat exchanger nothing outside a city ever looks for.
One attic cabinet does both seasons, which is why a November no-heat call on an older system is rarely a furnace-only decision.
One machine, both seasons, no combustion and no heat exchanger — and an honest account of what is and is not known about uptake in Texas new build.
Three things that decide how a Fort Bend County system performs and are almost never in the comparison between two quotes.
ENERGY STAR puts typical duct losses at 20 to 30%. Long runs across wide west-county floor plans, and why the return side is the real problem.
One thermostat downstairs deciding for a floor it cannot feel. What zoning does, what it costs and what it cannot fix.
A mean August dew point of 73.5°F, and why a house at 74°F can still feel wrong. Where this connects straight back to sizing.
R-22, R-410A and A2L — including EPA’s May 26, 2026 reversal, effective July 27, 2026, and the challenge filed against it in late July.
Two visits a year, one of which has a carbon monoxide question attached — and a strong argument for booking the far side of the county outside July.
Metal shops on acreage, detached garages, converted outbuildings and additions the ductwork never reached — and where a mini-split is the wrong answer.
Own or manage a building rather than a house? The commercial stock here is concentrated along Stafford’s industrial frontage and the retail and medical strips through Missouri City, Richmond and Rosenberg: package units on a roof, a planned service interval instead of a crisis, and tenants who lose trading rather than comfort. It is also the one thing the county genuinely inspects out here — see commercial AC and HVAC across Fort Bend County.
Two facts narrow it faster than a description of the noise: the year the house went up, and which city — or which stretch of unincorporated county — it stands in.
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