“Should I just fix it?” — how to run the replace-or-repair call without guessing.
The homeowner is standing in a hot house asking you for a number. Here is the framework that gets to an honest answer in about four minutes — plus a worksheet that shows its work, so you can hand the reasoning over instead of asking them to trust you.
Most of the money lost on this call is lost in the first ninety seconds. A tech who leads with a repair price gets compared to the guy down the street on that price alone. A tech who leads with a framework — here is what failed, here is what that means for the rest of the system, here are your two real options — is having a completely different conversation, and it is the one that closes.
None of that requires a sales script. It requires diagnosing before you quote, and knowing which six inputs actually move the decision.
The inputs
Six things decide it. Everything else is noise.
Work them in this order on the call. By the time you finish number six you already know the answer, and so does the homeowner.
01
Age against realistic service life
Residential split-system AC and heat pumps commonly run 10–15 years; furnaces often go longer, 15–20+. Those are typical ranges, not guarantees — coastal salt air, undersized returns, a filter that never got changed, and heavy run hours all pull the number down hard.
Ask Was this unit here when you bought the house? Has it been on a maintenance plan?
02
What actually failed
A capacitor, contactor, blower motor or board is a wear part — those are repairs on almost any age of equipment. A compressor, a leaking evaporator coil, or a condemned heat exchanger is a different category: high parts cost, high labor, and on older equipment the repair often exceeds a meaningful share of replacement.
Rule Wear part → repair. Sealed system or heat exchanger → run the whole framework.
03
The refrigerant situation
R-22 production and import in the US ended in 2020, so any R-22 charge now comes from reclaimed or previously-produced stock — supply and price are the risk, not legality. HFC refrigerants including R-410A are in an ongoing regulatory phase-down, and new residential equipment has been transitioning to lower-GWP A2L refrigerants.
Careful The specific limits and dates have moved recently — see the verification box below before you put anything in writing.
04
Repair cost as a share of replacement
The absolute repair number means nothing on its own. A $1,400 repair on a $4,000 replacement is a very different conversation than the same repair against a $12,000 system. Work the ratio, and work it against a replacement price you would actually honor.
Watch Quoting a repair against a made-up replacement number is how you lose the job twice.
05
Operating cost delta — honestly
An efficiency upgrade is real, but it is the weakest input on this list and the easiest to oversell. Savings depend on the actual runtime, the local utility rate, the duct system, and whether the new equipment is sized and commissioned properly. If you cannot support the payback math, do not lead with it.
Say “It will use less energy” — not “it pays for itself in four years.”
06
What they are actually complaining about
If the back bedroom has never been comfortable, or the house is clammy at 74°F, the equipment may not be the problem. Swapping a box onto an undersized return or a leaking duct system reproduces the complaint at a much higher price — and now it is your fault.
Check Static pressure, return sizing, and whether anyone ever ran a load calculation on this house.
Decision worksheet
Run the six inputs. Get a leaning and the reasoning behind it.
This does not replace your diagnosis — it organizes it. Every factor it weighs is shown below the result, so you can walk a homeowner through exactly why it landed where it did, or disagree with it on the spot.
Replace-or-repair worksheet
Nothing is sent anywhere — this runs in your browser.
No result yet. Fill in the eight fields above and run the worksheet. You will get a leaning, the weighted reasons behind it, and language you can use on the call.
How it scores: each input adds points toward replacement. Age contributes on a curve against the typical service life for that equipment type; failure type contributes by severity; the repair-to-replacement ratio contributes above roughly 0.30 and heavily above 0.50; R-22 and repeat repairs add; a sound system subtracts. Under 3.0 reads as repair, 3.0–5.5 as a genuine close call, above 5.5 as replace. A condemned heat exchanger and an undiagnosed failure both short-circuit the score entirely, because neither is a pricing question.
Heat exchanger: this is not a pricing conversation
A cracked or failed heat exchanger is a carbon monoxide risk, not a line item. If you confirm one, follow the manufacturer’s procedure and your jurisdiction’s requirements for taking the appliance out of service — do not leave it operating while the homeowner “thinks about it,” and document what you found, how you verified it, and what you told them.
Requirements for red-tagging, notifying the gas utility, and who may restore service vary by state and locality. Verify your own jurisdiction’s rules — do not rely on this page or on how it worked at your last shop.
Refrigerant & EPA — verify before you put it in writing
Two things are settled and safe to say to a homeowner:
- R-22 production and import in the US ended January 1, 2020 under the ozone-depleting-substance phaseout. Servicing an R-22 system is still legal; the charge comes from reclaimed or previously-produced supply, so cost and availability are the real risk.
- HFCs including R-410A are being phased down in production and consumption under the AIM Act, and new residential and light-commercial equipment has been transitioning to lower-GWP A2L refrigerants such as R-454B and R-32. A2Ls are classified mildly flammable and carry different handling, leak-detection, storage and transport requirements than the A1 refrigerants you grew up on.
What we are not going to state as fact here: the current sector-by-sector GWP limits, the compliance and sell-through dates, and which of them apply to a given piece of equipment. Those have changed recently and have been subject to amendment and litigation. Before you tell a customer their system “can’t be serviced after” some date, or that a repair is “no longer allowed,” check the current EPA rule text directly and confirm what your distributor is actually able to supply.
Separately: EPA Section 608 certification (Type I, II, III or Universal) is required to purchase and handle regulated refrigerants, venting is prohibited, and recovery is required before opening a system. Whether your local code has adopted the A2L provisions — and what that means for storage on your truck and in your shop — is jurisdiction-specific and must be verified locally.
On the call
Three conversations, three ways to open them.
Not scripts to memorize — the shape of the honest version of each one. The clear cases are easy. The close call is where reputations get made.
Clear repair
Young equipment, wear part
“Good news — it’s the capacitor, which is a normal wear part, and the rest of the system looks healthy for its age. I’d fix it. Replacing anything right now would be me selling you something you don’t need.”
Saying the replacement out loud and then declining to sell it is the single highest-trust move available to you. It costs you nothing today and it is why they call you in six years.
Clear replace
Old equipment, major failure
“The compressor is done. On a seventeen-year-old R-22 system, that repair runs about two-thirds of a new system, and it doesn’t fix the age of everything else in the box. I’d put that money into a replacement instead — here’s what that looks like.”
Lead with the ratio, not the raw number. “Two-thirds of a new system” is a fact they can evaluate; “$6,800” is a number they can only shop.
Close call
Middle age, real repair, no clean answer
“Honestly, this one goes either way. The repair will work and it should buy you a few years. But it’s a twelve-year-old system, this is the second call in two years, and if the compressor goes next you’ve spent this money for nothing. Here’s both prices — tell me how long you’re planning to stay in the house.”
Say “it goes either way” when it does. Manufacturing certainty on a genuine coin-flip is the fastest way to own a decision that was never yours to own.
Four traps that cost real money
- Treating the “repair cost × age” heuristic as a policy. Multiplying the repair price by the equipment age and replacing above some threshold is a rule of thumb that circulates widely. It is a fine gut check and a terrible policy — it ignores refrigerant, the condition of the rest of the system, and how long the homeowner is staying.
- Quoting before diagnosing. A price given over the phone, or off a symptom, is a price you will have to walk back. Walking back a number is significantly worse than never having said it.
- Sizing the replacement off the old nameplate. The unit coming out may have been wrong for twenty years. A replacement is the one moment you get to fix that — and a load calculation is what tells you, not the tonnage of the box on the pad.
- Not writing down the failure. Photograph the failed part, the data plate, and the readings. When the homeowner’s brother-in-law asks why they spent nine thousand dollars, that documentation is the whole answer.
Then put it on paper the same day
The close-call conversation dies if you leave without giving them something to look at. Both numbers, written, with the scope spelled out — that is what gets discussed at the kitchen table after you drive off, and it is what beats the competitor who texted a figure.
The replacement conversation is a maintenance-plan conversation you didn’t have three years ago.
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Quick answers
Replace-or-repair FAQ.
Is the “repair cost times age” rule real?
It is a widely circulated rule of thumb, not a standard. Multiply the repair price by the age of the equipment and compare it to the replacement price, and you get a rough gut check that is right often enough to be dangerous. It ignores refrigerant availability, the condition of the ductwork, whether the system was ever correctly sized, and how long the customer plans to stay in the house — all of which move the answer. Use it to sanity-check a decision you reached another way, never to make one.
Can I still legally repair an R-22 system?
Yes. The 2020 phaseout ended US production and import of R-22; it did not make servicing existing equipment illegal. What changed is supply — the refrigerant now comes from reclaimed and previously-produced stock, which means cost and availability are the practical constraint. That belongs in the conversation as a cost and risk factor, not as a legal one. Recovery requirements and the venting prohibition under EPA Section 608 apply as they always have.
What about R-410A — should I be telling customers it is going away?
Be careful here. HFCs including R-410A are subject to an ongoing production and consumption phase-down under the AIM Act, and new equipment has been transitioning to lower-GWP A2L refrigerants. But the specific limits, dates, and which equipment categories they apply to have changed recently and have been subject to amendment and litigation. Telling a homeowner their system “can’t be serviced after” a particular date is a claim you should verify against the current EPA rule and your actual distributor supply before you make it — getting it wrong in writing is a real problem.
Should I size the replacement the same as what is coming out?
Not automatically. The existing equipment may have been oversized or undersized since the day it went in, and a replacement is the one opportunity to correct it. Oversized cooling equipment short-cycles and does a poor job of removing humidity, which is exactly the “it’s cold but clammy” complaint. A proper load calculation — ACCA Manual J for residential — is what determines the load, with Manual S used to select equipment whose actual performance data matches it. Many jurisdictions require a load calculation on the permit; verify what yours requires.
The homeowner wants the cheap repair and I think it is the wrong call. Now what?
Do the repair if it is safe to do, document that you presented both options and what you recommended, and leave the replacement quote with them. The exception is anything that is a safety issue rather than an economic one — a confirmed failed heat exchanger is not a customer-preference decision, and you follow the manufacturer’s and your jurisdiction’s procedure regardless of what they would prefer.
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