HVAC Repair Cost Calculator

In 2026, HVAC repair typically costs $150 to $2,000+, depending entirely on what's wrong — minor repairs are a few hundred dollars, while major component failures run into the thousands. Most service visits include a diagnostic/service-call fee (often $75-$150, sometimes applied toward the repair). Common repair costs: minor electrical fixes like a capacitor, contactor, or thermostat run roughly $150-$450; a refrigerant leak repair/recharge is around $200-$700 (more if the leak is hard to find or a lot of refrigerant is needed, especially with pricier refrigerants); a blower or fan motor is about $400-$900; an evaporator or condenser coil is roughly $600-$2,000; a compressor (a major part) is about $1,200-$2,800+; and a furnace heat exchanger is around $1,500-$3,500. The cost depends on the specific failed component (the biggest factor), the system type (central AC, furnace, heat pump, or mini-split — heat pumps and some parts cost a bit more), the system's age (older systems can cost more due to harder-to-find parts and more labor), the parts and refrigerant prices, and labor rates in your area. Add-ons like duct repair, a refrigerant top-up, a smart thermostat, electrical/breaker fixes, emergency/after-hours service (which carries a premium), and a maintenance tune-up add to the total. Importantly, for older systems or very expensive repairs (like a compressor or heat exchanger on a 12-15+ year old unit), replacement is often more cost-effective than repair. This calculator lets you set the repair type, system type, and age to estimate your HVAC repair. Pricing varies by region, the part, the system, and the contractor — and a technician's diagnosis determines the actual repair needed. Getting a clear diagnosis and quote (and a second opinion for major repairs) is wise.

HVAC systems develop a range of issues, and some repairs are far more common than others — knowing them helps you understand a diagnosis and likely cost. Capacitor failure is one of the most common (and least expensive) repairs — the capacitor helps start and run the motors, and when it fails the system won't start or the fan/compressor won't run; it's a cheap, quick fix. Contactor failure (the relay/switch that powers the unit) is similarly common and inexpensive. Refrigerant leaks and low refrigerant are very common AC issues — leaks cause poor cooling, ice on the coils, and a hard-running system; the repair involves finding and fixing the leak and recharging (low refrigerant is always due to a leak, not 'using it up'). Thermostat problems (faulty, miscalibrated, or dead thermostat) cause no/erratic operation and are an easy fix. Dirty or frozen coils and clogged filters (often a maintenance issue) cause poor performance and freezing. Blower/fan motor failure (the motor that moves air) stops airflow and is a mid-range repair. Capacitor, contactor, and motor issues are frequent electrical/mechanical failures. Clogged condensate drain lines cause water leaks and shutoffs. Ignition or pilot problems, flame sensors, and igniters are common furnace issues (no heat). Compressor failure (the AC/heat pump's pump) is a major, costly failure (less common but serious). Heat exchanger cracks (furnace) are serious (safety/carbon-monoxide concern) and costly. Electrical issues (wiring, breakers, control boards) and worn parts round out the list. Many problems stem from lack of maintenance (dirty filters/coils, low refrigerant, wear), which is why regular tune-ups prevent breakdowns. The most common repairs (capacitors, contactors, refrigerant, thermostats, motors, drain lines) are relatively affordable, while major components (compressor, heat exchanger, coils) are expensive. This calculator covers the main repair categories. A technician diagnoses the specific issue. Regular maintenance reduces the frequency of these repairs and catches problems early.

The repair-vs-replace decision depends on the system's age, the cost of the repair relative to a new system, the unit's overall condition and efficiency, and how often it's breaking down — a common guideline helps, but it's a balance of factors. Lean toward repair when: the system is relatively young (well within its expected lifespan — central AC ~12-17 years, furnaces ~15-20+, heat pumps ~10-15), the repair is minor or moderate (a capacitor, motor, thermostat, refrigerant fix), the unit is otherwise in good shape and efficient, and it's not breaking down repeatedly — fixing it is the cost-effective choice. Lean toward replacement when: the system is old (near or past its expected lifespan), the repair is major and expensive (a compressor, heat exchanger, or coil on an old unit), the repair cost is a large fraction of (or approaches) the cost of a new system, the unit is inefficient (an old low-SEER system costs much more to run, so a new high-efficiency unit pays back in energy savings), it's breaking down frequently (throwing good money after bad), it uses an obsolete/phased-out refrigerant (like older R-22, making refrigerant repairs costly), or there are safety issues (a cracked heat exchanger). Common guidelines: the '$5,000 rule' (multiply the unit's age by the repair cost — if it exceeds $5,000, consider replacing) and the '50% rule' (if the repair costs more than ~50% of a new system, or the unit is over ~10 years old with a costly repair, replace). Also weigh: energy savings from a new efficient system, available rebates/incentives, the remaining life and reliability, comfort, and whether you plan to stay in the home. For a young system with a modest repair, repair; for an old system with a major repair, an inefficient unit, or frequent failures, replacement usually makes more financial sense long-term. This calculator estimates repair cost; the site also has HVAC installation/replacement calculators to compare. A trusted HVAC professional can assess your system's condition, efficiency, and remaining life and advise honestly — get a second opinion for big-ticket repairs. Weigh the repair cost against the system's age and a new unit's cost and efficiency.

An AC that's running but not cooling (or cooling poorly) has several common causes, ranging from cheap fixes to expensive repairs — diagnosing the specific cause determines the cost. Common causes and rough costs: Dirty air filter — a clogged filter restricts airflow and reduces cooling (and can freeze the coil); replacing it is cheap/DIY (and a key maintenance item). Low refrigerant/leak — if the system is low on refrigerant (always due to a leak), it can't cool properly, may ice up, and runs constantly; finding/fixing the leak and recharging runs roughly $200-$700+ (more for hard leaks or pricey refrigerant). Frozen evaporator coil — from low airflow (dirty filter/coil) or low refrigerant, ice forms and blocks cooling; the fix addresses the underlying cause (cleaning, refrigerant). Dirty coils — dirty condenser (outdoor) or evaporator (indoor) coils reduce heat exchange; cleaning is moderate cost. Capacitor or contactor failure — if the compressor or fan isn't running (the outdoor unit not kicking on), a failed capacitor or contactor is a common, relatively cheap fix (~$150-$450). Compressor failure — if the compressor (the heart of cooling) has failed, the AC won't cool; this is a major, expensive repair (~$1,200-$2,800+), and on an old unit, replacement is often better. Fan motor failure — a failed condenser or blower fan stops air movement/heat rejection; ~$400-$900. Thermostat issues — a faulty thermostat can cause no/poor cooling; cheap fix. Clogged condensate drain (can trigger a safety shutoff), ductwork leaks/issues (reducing cool air delivery), or an undersized/aging system are other causes. Electrical issues (tripped breaker, wiring) can also stop the unit. The cost thus ranges from nearly free (filter) to a few hundred (capacitor, fan, refrigerant) to thousands (compressor). Start by checking the filter, thermostat settings, and breaker; if those are fine, a technician should diagnose the cause (refrigerant, electrical, compressor, etc.). This calculator lets you select the likely repair (minor electrical, refrigerant, motor, compressor) to estimate the cost. A proper diagnosis is key, since 'not cooling' has many possible causes at very different price points. Don't keep running an AC that's icing up or struggling — get it diagnosed to avoid further damage.

Fixing a refrigerant leak in an AC or heat pump typically costs around $200 to $1,500+, depending on where the leak is, how hard it is to find and access, how much refrigerant is needed, and which refrigerant your system uses — it's one of the more variable repairs. The cost components: Leak detection — finding the leak (with electronic detectors, dye, or pressure tests) takes time and may add to the cost, especially for small or hidden leaks; some leaks are easy to spot, others elusive. Leak repair — the actual fix depends on the location: a leak at an accessible joint or valve might be a relatively simple repair, while a leak in the evaporator or condenser coil is much more expensive (sometimes the coil must be replaced, costing $600-$2,000+); a leak in the lineset or a component varies. Refrigerant recharge — refilling the system with refrigerant is priced by the amount (pounds) needed, and the refrigerant type matters a lot: older R-22 (phased out) is very expensive now, while newer refrigerants (R-410A, etc.) are cheaper but still a cost; a recharge alone might be $200-$600+, more for large amounts or R-22. Important note: simply 'topping off' the refrigerant without fixing the leak is a temporary, wasteful fix (the refrigerant will leak out again, and venting refrigerant is environmentally harmful and against regulations) — a proper repair finds and fixes the leak, then recharges. For a small accessible leak, the total might be a few hundred dollars; for a coil leak or an R-22 system needing a lot of refrigerant, it can run well over $1,000, at which point (especially on an old unit) replacing the system may be more economical than an expensive coil/refrigerant repair. This calculator includes refrigerant leak/recharge as a repair type (and a top-up add-on). A technician will locate the leak and advise on repair vs. replacement, particularly for coil leaks or old R-22 systems. Fixing the leak (not just refilling) is the correct approach. The location of the leak and the refrigerant type are the biggest cost factors.

Yes — charging a diagnostic or service-call fee is standard practice in the HVAC industry, and it covers the technician's time and expertise to come to your home, inspect the system, and diagnose the problem. What it is: the diagnostic/service-call fee (often around $75-$150, varying by company and region) is charged for the visit and troubleshooting — the technician travels to your home, examines the system, runs tests, and identifies the issue, then provides a diagnosis and repair quote. This fee compensates for their time, travel, and diagnostic skill, regardless of whether you proceed with the repair. How it's handled: practices vary — some companies apply the diagnostic fee toward the repair cost if you have them do the work (so it's effectively waived or credited when you proceed), while others charge it separately on top of the repair; some have flat-rate diagnostic fees, and emergency/after-hours diagnostics cost more. It's reasonable to ask upfront what the diagnostic fee is and whether it's applied to the repair. Why it's normal and fair: diagnosing HVAC problems requires expertise and equipment, and the technician's time has value even if the fix turns out to be simple or if you decide not to repair; free 'diagnostics' can sometimes come with pressure to upsell. Tips: ask about the diagnostic fee when scheduling, confirm whether it applies toward the repair, get the diagnosis and a written/clear repair quote before authorizing work, and for major repairs consider getting a second opinion (worth the additional diagnostic fee). Some companies offer free estimates for replacements (vs. repairs). Maintenance plan members often get reduced or waived diagnostic fees. So a diagnostic fee is a normal, legitimate charge — just understand the amount and whether it's credited toward the repair. This calculator's repair estimates effectively include the diagnostic/labor as part of the repair cost. Knowing the fee and getting a clear quote helps you make an informed decision. A reputable company is transparent about its diagnostic fee and repair pricing.

Yes — regular HVAC maintenance significantly reduces the likelihood and frequency of repairs, extends the system's life, improves efficiency, and catches small problems before they become big, expensive failures; it's one of the best ways to avoid breakdowns and save money over time. How maintenance prevents repairs: many HVAC problems stem from neglect — dirty filters and coils (reducing airflow and causing the system to overwork, overheat, or freeze), low refrigerant or developing leaks, worn parts, loose electrical connections, clogged drains, and dirt buildup — and routine maintenance addresses these before they cause failures. A typical professional tune-up includes cleaning the coils, checking and replacing/cleaning filters, checking refrigerant levels (and spotting leaks early), inspecting and tightening electrical connections, lubricating moving parts, testing the capacitor and other components, clearing the condensate drain, checking the thermostat, and inspecting the overall system — catching issues like a weak capacitor, a small refrigerant leak, a worn motor, or a dirty coil while they're cheap/easy to fix, rather than after they cause a breakdown (often on the hottest/coldest day). Benefits: fewer and less severe repairs, longer system lifespan (deferring replacement), better energy efficiency (a clean, tuned system uses less energy, lowering bills), more reliable comfort, better air quality, and often maintaining the manufacturer's warranty (many warranties require regular maintenance). Recommended maintenance: a professional tune-up typically once or twice a year (ideally the AC in spring and the heating in fall), plus homeowner upkeep like regularly changing/cleaning the air filter (the single most important DIY task), keeping the outdoor unit clear of debris, and keeping vents unobstructed. The modest cost of maintenance (a tune-up, often $100-$200, plus filters) is far less than the cost of repairs and premature replacement it helps avoid, making it a worthwhile investment. While maintenance can't prevent every failure, it dramatically reduces the odds and keeps the system running efficiently. This calculator includes a maintenance tune-up as an add-on (good to pair with a repair). Investing in regular maintenance (and changing filters) is the best way to minimize HVAC repairs and extend your system's life. Consider a maintenance plan for scheduled service.

Most HVAC repairs are completed in a single visit, often taking from under an hour to a few hours, though some repairs requiring special-order parts can take longer (a follow-up visit). Quick repairs (often under an hour to a couple of hours): replacing a capacitor, contactor, thermostat, fuse, or fan motor, recharging refrigerant, clearing a condensate drain, or cleaning a coil are typically same-visit, relatively fast fixes — the technician diagnoses and repairs in one trip if the part is on the truck or readily available. Moderate repairs (a few hours): replacing a blower motor, certain electrical/control components, or doing a more involved refrigerant leak repair takes a bit longer. Major repairs (longer, possibly multiple visits): replacing a compressor, an evaporator/condenser coil, or a heat exchanger is more labor-intensive (several hours to most of a day) and may require ordering the specific part (which can delay the repair by days until the part arrives, then a return visit to install it). The timeline depends on: the type of repair (minor vs. major component), whether the needed part is in stock/on the truck or must be ordered (parts availability is often the main delay for non-stocked components), the diagnosis time, the system's accessibility, and the technician's schedule. Emergency/after-hours service can get a technician out quickly (for a premium) for urgent issues (no heat in winter, no cooling in extreme heat). For common failures (capacitors, motors, refrigerant), expect a same-visit fix; for major components or uncommon parts, expect possible ordering time. Diagnosis itself is usually quick. To speed things up: describe the symptoms clearly when scheduling, and ask whether the likely part is in stock. This calculator estimates the cost; the repair time depends mainly on the part and whether it's available. Many HVAC companies stock common parts to enable same-visit repairs. For major component replacements, allow for possible part-ordering time. A technician can tell you the timeline once the issue is diagnosed.