Replacing an air conditioner capacitor costs $200 to $400 including the part and labor, averaging $250, according to Angi.[1] HomeGuide publishes a similar picture at $250 to $400 with a $300 average, and Forbes Home reports a lower $190 average over an $80 to $400 range on a page last verified in May 2024.[2][3] The part alone runs $8 to $45 by type per Forbes Home and $15 to $80 per HomeGuide, and Angi says it rarely exceeds $45 – so labor makes up most of the bill.[1][2]
Safety first: an AC capacitor stores electrical energy and can hold a high-voltage charge even after the power is disconnected. WEG, a manufacturer of motor-run capacitors, warns in its safety and application manual that a disconnected capacitor may still carry high levels of voltage and that handling one can expose human life to risk. That stored charge is an electric shock hazard, which is why capacitor replacement is work for a licensed HVAC technician, not a DIY job.[4]
AC capacitor replacement cost by source
| Source | Average (per job) | Typical range (per job) | Scope as published |
|---|---|---|---|
| Angi | $250 | $200 – $400 | AC capacitor replacement, part + labor; Angi notes labor drives most of the total |
| HomeGuide | $300 | $250 – $400 | AC capacitor replacement, part + labor; page also lists a $150 minimum and $500 maximum per job |
| Forbes Home | $190 | $80 – $400 | AC capacitor cost including labor; page states it was last verified May 21, 2024 |
Angi, HomeGuide and Forbes Home are three separately owned publishers, and their pages state no shared sourcing. Each set of figures is reported as published on its own page.
Capacitor part cost by type
| Capacitor type | Angi (per part) | Forbes Home (per part) |
|---|---|---|
| Run capacitor | $8 – $30 | $9 – $32 |
| Dual-run capacitor | $15 – $45 | $18 – $45 |
| Start capacitor | $9 – $25 | $8 – $28 |
| Blower capacitor | $9 – $12 | $9 – $15 |
| Heat pump capacitor | $15 – $25 | $15 – $25 |
Part-only prices by capacitor type. Sources: Angi and Forbes Home. HomeGuide publishes a single part-only range of $15 to $80 rather than a per-type table.[2] Angi explains that start, run, dual-run, blower and heat pump capacitors serve different motors, and that higher-capacitance parts for larger systems typically cost more.
Labor cost to replace an AC capacitor
| Labor framing | Labor cost as published |
|---|---|
| Angi: pro labor for the swap | $200 – $400 per replacement (labor alone); many pros charge an all-inclusive flat rate of $300 – $600 |
| HomeGuide: HVAC technician hourly rate | $75 – $150 per hour |
| Forbes Home: labor for the install | $75 – $250 per job |
Each publisher frames labor differently, so the figures are not directly comparable line to line. Angi notes that some pros add a diagnostic fee and that emergency, weekend or holiday calls cost extra; HomeGuide notes summer demand can push rates up.
What a bad capacitor costs if you wait
A weak capacitor forces the compressor and fan motors to work harder. HomeGuide warns that running an AC with a bad capacitor can seriously damage the compressor and fan motor – parts that cost far more than the capacitor – and can lead to complete system failure.[2] Angi publishes these figures for the repairs that follow:[1]
| Related repair | Cost (Angi, per repair) |
|---|---|
| Damaged compressor | $750 – $2,000 |
| Fan coil replacement | $600 – $2,000 |
| Burnt-out motor | $200 – $700 |
| Thermostat replacement | $150 – $350 |
Costs of other common AC repairs. Source: Angi, which warns that a failing capacitor can wear down other, more expensive parts. HomeGuide separately puts typical AC repairs at $150 to $650 on average.[2]
Signs the capacitor may be failing
HomeGuide lists the common symptoms: the AC stutters when turning on, fails to start at all, shuts off randomly, blows warm air, or makes clicking or humming sounds.[2] Both HomeGuide and Angi caution that the same symptoms can come from other components, so a qualified HVAC technician should diagnose the unit before any part is ordered.[1][2] A trained professional takes about an hour for the swap once the correct part is on hand, per HomeGuide and Angi.[1][2]
Ways to keep the bill down
The sources agree on a few cost checks, all about hiring rather than doing it yourself. HomeGuide advises confirming whether the AC manufacturer’s warranty covers the capacitor, getting at least three written estimates, and looking for a NATE-certified, licensed and insured technician.[2] Angi suggests asking whether the quote includes a diagnostic fee, scheduling in the spring before summer demand raises rates, and checking whether a home warranty that covers the AC would make a claim cheaper than paying out of pocket.[1]
Safety: stored charge is the whole story
Unlike a blown fuse or a dirty filter, a capacitor is dangerous because of what it does when everything looks off: it stores energy. WEG’s safety manual for AC capacitors – the same class of motor-run part this guide prices – warns that capacitors must always be handled with care even after they have been disconnected, because they may still hold high levels of voltage that can put human life at risk.[4] Angi adds that a mishandled capacitor can leak or burst and that a failed swap can leave a home without cooling.[1] This guide therefore stops at costs: there is no DIY procedure here and no shopping link, because no model-specific manufacturer instructions were consulted to establish safe homeowner applicability and precautions.
Related cost guides
See our guides to AC repair cost, HVAC repair cost, AC tune-up cost, HVAC replacement cost and furnace repair cost.
Sources
- Angi – How Much Does AC Capacitor Replacement Cost? (updated Aug 3, 2026)
- HomeGuide – AC Capacitor Replacement Cost (September 4, 2025)
- Forbes Home – How Much Does an AC Capacitor Cost? (page states last verified May 21, 2024)
- WEG – Safety, Application and Maintenance Manual for AC Capacitors (manufacturer safety manual for motor-run capacitors)