Fort Bend Why the usual formula doesn't fit a lot of Richmond houses
The advice you'll find everywhere is some version of: multiply the repair estimate by the age of the system, and if it crosses a threshold, replace. That math assumes a homeowner comparing the lifetime cost of two systems, with room to finance the better long-term play. In Richmond, where median household income runs around $50,337 and just over half of homes are owner-occupied (ACS 2020–2024), that's often not the question in front of you. The real question most summers is simpler: will this system get the house through August, and can the repair that does it be trusted. Efficiency-tier payback calculations are a luxury for a different kind of decision. Here, three questions do more work than any formula.
Question 1: Is the failure on the refrigerant circuit, or off it
Not all failures are the same kind of expensive, and the dividing line matters more than the dollar number. A bad capacitor, a worn contactor, or a failing fan motor are off the refrigerant circuit — common, well-understood parts that get swapped on a service call and don't say anything about the rest of the system's health. A failed compressor, a coil leaking refrigerant, or a buried line set with a slow leak are on the circuit — and a repair there is often a bet that the rest of a ten- or fifteen-year-old system won't fail right behind it. Ask whoever is quoting the repair which category the failure falls into. It's a fair question, and it reframes "repair or replace" into "is this isolated or is this the first domino." A good AC repair visit should be able to tell you which one you're looking at before any parts get ordered.
Question 2: What refrigerant is actually in the system
If the outdoor unit still runs on R-22, that changes the math on its own, separate from age. R-22 production ended January 1, 2020, and what's available since is reclaimed supply only — meaning a refrigerant leak repair on an R-22 system can cost more in refrigerant than the labor to fix the leak itself, and that cost has nowhere to go but up as reclaimed stock shrinks. Worth saying plainly: the EPA does not require you to replace a working R-22 system. If it's running fine and the fix is off the refrigerant circuit, there's no rule forcing a changeout. But if the fix is a recharge on a leaking R-22 coil, you're not really being asked to choose between repair and replacement — you're being asked whether you want to pay for refrigerant now or make the harder decision now instead. The refrigerant and system age conversation is worth having honestly before a technician opens the unit, not after.
Question 3: Is everything else the same age
A lot of Fort Bend County was built in tight phases — entire sections went up in the same two-year window, which means the HVAC equipment on a given street is often the same age too. Richmond has plenty of pockets like this. If the condenser that's failing came in with the house and the indoor coil, the line set, and the thermostat are all original to that same install, a repair buys time on a system where everything is approaching the same ceiling at once — and the next failure may be weeks away, not years. If instead the house has had a partial replacement already, or the failing part is newer than the rest, repair is usually the right call without qualification. Where the answer to all three questions points toward an isolated, off-circuit failure on equipment with no other red flags: repair. That's not a consolation answer — it's the correct one.
A short sequence for the decision in front of you
- Get a plain answer on whether the failure is on the refrigerant circuit or off it.
- Ask what refrigerant the system uses, and whether the fix touches that circuit at all.
- Check the age of the compressor, coil, and line set against each other, not just against a calendar.
- If a replacement does end up on the table, ask for a copy of the load calculation with the quote — in unincorporated parts of the county there's no mechanical permit or inspection to catch an undersized or oversized system, so that document is the only outside check you get.
- If you're staying local to Richmond for service going forward, confirm the pro is familiar with the Richmond service area and comfortable walking through these questions, not just quoting a number.
The short version: let the failure, the refrigerant, and the age of the rest of the equipment decide the repair-or-replace question, not a multiplication table.