Air Conditioning: what to ask, what it costs, and one number to call
Updated June 2026 · By the Mobile Phonebook editorial team · How we research pricing
If it's happening right now: do this
- Run the free checks first: tripped breaker, clogged filter, thermostat batteries and settings. These three fix a surprising share of 'dead' ACs before anyone is dispatched.
- Ice on the refrigerant lines or indoor coil? Shut the system off and let it thaw for several hours. Running it frozen can take out the compressor, which turns a repair into a replacement.
- If there are vulnerable people in the house (elderly, infants, medical conditions) and indoor temps are climbing into dangerous territory, say so when you call. Bridge the gap with a window unit, a fan-and-ice setup, or a cooling center rather than waiting days.
- Then call the number on this page and describe the symptom precisely. Running but blowing warm, not turning on at all, tripping the breaker. Each points somewhere different, and a clear description gets you honest triage.
AC companies handle central air repair, refrigerant leaks, compressor and capacitor failures, thermostat problems, mini-splits, and full system replacements. The calls spike on the first 95-degree week of summer, which is also when wait times are longest and your pricing leverage is worst. A system limping through spring is worth fixing in spring.
More than most trades, AC is where homeowners face a single expensive judgment call: repair the old unit or replace it. Companies know that fork in the road is where the money is, and some steer every service call toward a new system. A little math and a few sharp questions keep the decision yours.
What should you have ready before you call?
- Age of the system; check the manufacture date on the outdoor unit's data plate
- Make, model, and refrigerant type (also on the data plate, take a photo)
- Symptoms: not cooling at all, weak cooling, ice on lines, short cycling, strange noise, tripped breaker
- Whether you've checked the basics: thermostat set right, air filter not clogged, breaker not tripped, outdoor unit running
- Repair history, meaning what's been fixed or recharged in the last few years
- Square footage of your home (matters for replacement quotes)
- Your realistic budget and how long you plan to stay in the house, because that changes the right answer
What should you ask before hiring? The 8-question script
This is your script. Nobody expects you to be an expert. Sound like someone who asks the right questions, and anyone good will answer all of these without flinching.
Standard practice varies. Knowing the fee, and whether it gets credited, sets the baseline before anyone's in your yard.
A good tech will show you the bulged capacitor, the meter readings, the pressure gauges. 'Your system is shot' without evidence is a sales pitch, not a diagnosis.
Getting both numbers from the same visit lets you run the age-times-repair math yourself. If they'll only quote replacement, that tells you what the visit was really about.
Capacitors, contactors, fan motors, and thermostats are routine fixes. Compressors and leaking coils on an older unit are where replacement starts making sense.
Refrigerant doesn't get 'used up.' If it's low, there's a leak, and paying for top-offs every summer without a leak search is the most common slow-bleed upsell in the trade.
Proper sizing uses a load calculation (Manual J), not 'same as the old one' or square footage alone. Oversized units short-cycle and dehumidify poorly. Bigger is not better.
Low bids get low by reusing components that should be replaced. Line-item quotes let you compare bids honestly.
Manufacturer parts warranties (often 10 years) usually require registration. Labor warranties vary from 1 year to 10, and that difference is worth real money.
How much does air conditioning cost in 2026?
Repairs run from cheap electrical parts to four-figure compressor jobs. Replacement is a major purchase priced by size, efficiency, and install complexity. 2026 national ranges:
| Typical job | National range | What moves the price |
|---|---|---|
| Diagnostic / service call | $75 – $200 | After-hours and peak-season calls run higher |
| Capacitor or contactor replacement | $150 – $450 | Cheap part; you're mostly paying labor and the trip |
| Condenser or blower fan motor | $300 – $900 | ECM and variable-speed motors cost more |
| Refrigerant leak search + repair | $300 – $1,500 | Plus refrigerant; coil leaks can exceed this |
| Refrigerant recharge | $200 – $800+ | The phasedown keeps pushing R-410A prices up |
| Evaporator coil replacement | $1,200 – $3,000 | On an old unit, run the replace math first |
| Compressor replacement | $1,500 – $3,500 | The classic 'replace the system instead' repair |
| Central AC replacement (condenser + coil) | $6,500 – $12,000 | Size, SEER2 tier, and install complexity |
| Full system (AC + furnace/air handler) | $9,000 – $20,000+ | Ductwork repairs or high-efficiency tiers push it higher |
These are typical 2026 U.S. ranges for planning purposes; your market, season and job specifics can land outside them. Always get the price for your job confirmed on the call and in writing. Ranges compiled June 2026 from national cost data and industry sources (methodology).
When you don't need to call anyone
We get paid when you call, so take this section as seriously as we do. Sometimes the honest answer is that you can handle it yourself or fix it cheaper first:
- AC blowing weak or warm? Check the air filter first. A clogged filter is the cheapest 'repair' in HVAC and resolves a surprising number of service calls.
- A tripped breaker or a thermostat with dead batteries causes plenty of 'broken AC' calls. Check both before paying a diagnostic fee.
- Iced-over coil? Turn the system off, let it thaw for a few hours, replace the filter, and test. Call only if it ices up again.
- If the system is working fine, most of the 'tune-up' value is yours for free: change the filter on schedule and keep the outdoor unit clear of leaves and debris.
How the air conditioning business works
A typical service call starts with a diagnostic fee, usually $75-$200, which covers the tech coming out and finding the problem. From there most companies quote flat-rate repairs from a price book. The economics behind the scenes are worth knowing. Residential HVAC has been consolidating for years, with many local brands now owned by larger groups that run commissioned sales models. That doesn't make a company dishonest, but it explains why some techs are effectively salespeople and why a $40 capacitor can be quoted at $400 installed.
The repair-or-replace math the industry itself uses is the '$5,000 rule' (some say the rule of 5,000). Multiply the unit's age by the repair cost, and if the result is over $5,000, lean replacement. A $600 repair on an 8-year-old unit (4,800) is borderline fine. The same repair on a 14-year-old unit (8,400) is throwing money at a dying system. Central AC units last roughly 12-17 years. Pair that rule with one more question: is the repair on the refrigerant circuit (compressor, coil, leak)? Those tend to recur, and on old units they argue for replacement.
Two technical things affect every quote. First, SEER2, the federal efficiency standard that replaced SEER ratings in 2023. New units start at SEER2 13.4-14.3 depending on region. Higher SEER2 costs more up front and saves on power bills, but don't let anyone sell you a top-tier unit purely on 'it pays for itself' without showing the math for your usage. Second, refrigerant. R-410A is being phased down, and new systems use R-32 or R-454B. Topping off an old R-410A system gets pricier every year. That's a real factor in replace-vs-repair, and also a scare line some salespeople overplay.
Then there's the tune-up bait. The '$29 spring tune-up' is a marketing cost for the company. They lose money on the visit and make it back by finding things to sell. Sometimes they find real problems. Sometimes a perfectly working system suddenly needs $1,500 in parts. Legitimate maintenance is worth doing annually, but treat a cheap-tune-up tech's urgent findings as a prompt for a second opinion, not a same-day signature.
Red flags & good signs
Red flags
- A $29-$79 tune-up that turns into an urgent four-figure repair list on a system that was cooling fine yesterday
- Refrigerant top-offs every season with no leak search ever proposed. You're renting your own refrigerant at that point.
- Condemning a system without showing you readings, the failed part, or letting you watch the test
- 'The price is only good today' pressure on a replacement decision. Legitimate quotes hold for weeks.
- Replacement sizing based on nothing but the old unit's tonnage or square footage, with no load calculation
- Scare lines about refrigerant phase-outs used to rush you. Old refrigerants do get expensive, but your system isn't illegal to repair.
- A quote that's just one big number with no breakdown of equipment, labor, permit, and extras
Good signs
- Shows you the failed part and the meter or gauge readings that prove it
- Quotes the repair and the replacement, then walks you through the age-times-cost math without pushing
- Does a real load calculation before quoting a replacement size
- Registers the manufacturer warranty for you and puts the labor warranty in writing
- Honest about what can wait until shoulder season, when prices and availability are better
Frequently asked questions
How much does a new AC unit cost?
Should I repair or replace my AC?
How long does an AC unit last?
Why is my AC running but not cooling?
How much does freon / refrigerant cost?
What is SEER2 and what rating do I need?
Are AC tune-ups worth it?
How long does AC replacement take?
Related services
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