How much does an AC tune-up cost in Draper?

Our standard AC tune-up is priced in the range of $89–$139 depending on system type (single-stage, two-stage, or variable-capacity communicating systems require more diagnostic time). Multi-system homes (two or more AC systems) receive a reduced per-unit rate on the second and subsequent units. Our annual maintenance plan covers two scheduled visits per year (pre-cooling and pre-heating season) at a plan rate below the per-visit price for customers who schedule both. Pricing is confirmed when you call to schedule — we do not use 'tune-up specials' that inflate to full rates once the technician is in your home.

What is the difference between an AC tune-up and an HVAC inspection?

An AC tune-up is a performance service: we clean components, measure system parameters, and correct minor issues found during the visit (condensate drain flush, filter replacement, minor electrical tightening). An HVAC inspection is a documentation service: we assess condition, document findings, estimate remaining service life, and produce a written report without performing corrective work during the visit. Inspections are most commonly requested for pre-purchase home evaluations, insurance documentation, or HOA compliance requirements. Tune-ups are the routine annual service; inspections are event-specific.

Does the tune-up include refrigerant recharge?

The tune-up includes refrigerant charge verification by superheat and subcooling measurement. If the charge is found to be within the target range, no action is required. If the charge is found to be low, that indicates a refrigerant leak. We do not add refrigerant to a system without finding and repairing the leak first — a refrigerant top-off without leak repair is a temporary measure that masks the problem and shortens compressor life. A confirmed refrigerant leak found during a tune-up is quoted as a separate repair and approved by you before any refrigerant is added.

My system cooled fine last year — do I really need a tune-up?

Yes, and the reason is the Arrhenius effect on capacitors specifically. A capacitor that measures 32 microfarads in April (slightly below the 35 mfd nameplate) has been degrading all summer under elevated ambient conditions and may be at 26–28 mfd by late July — below the threshold for reliable motor start. The system will cool fine until the day the capacitor fails, which will be the hottest day of the season because that is when the thermal load on the capacitor is highest. 'It worked fine last year' is accurate but not predictive of this season's performance once you understand how capacitor thermal degradation accelerates during summer operation.

Can I do any of the tune-up steps myself?

Yes. Homeowner-appropriate maintenance tasks: filter replacement (every 60–90 days for MERV 8, 90–120 days for MERV 13), condenser coil rinse with a garden hose (gentle spray, low pressure only), condensate drain line flush with white vinegar, and clearing vegetation from the 12-inch clearance zone around the condenser. What you cannot do without certification: refrigerant system work (EPA Section 608 required), capacitor replacement (240V capacitors hold a lethal charge even with power disconnected — must be discharged before handling), and any electrical work inside the disconnect or panel. The tune-up value is in the instrument-based measurements that homeowners cannot perform without professional tools.

AC Tune-Up in Draper, Utah

The purpose of a pre-season AC tune-up is not to fulfill a maintenance checkbox. It is to find the components that are about to fail before they fail on a 97°F Saturday afternoon in late July when our emergency dispatch is running 18–22 calls and the next available appointment is 36 hours away. A dual-run capacitor reading 28 microfarads on a 35 microfarad nameplate — operating at 80% of its rated value — costs $185–$285 to replace in April. The same capacitor failing in the middle of a July heat event costs $185–$285 plus the after-hours labor rate plus the 24–48 hour wait if the truck does not have the right cross-reference in stock.

That is the economic case for the annual tune-up in one paragraph. The rest of this page explains what the tune-up actually includes, why each step matters for south Salt Lake Valley conditions specifically, and what a proper service report looks like.

What We Check — The Full AC Tune-Up Sequence

Filter Inspection and Replacement

The air filter is checked first because a severely restricted filter creates conditions that mimic refrigerant charge problems on the gauges — low suction pressure, elevated superheat, reduced delta-T across the evaporator. If the filter is replaced before refrigerant measurements are taken, the readings reflect the system’s actual condition rather than a filter-induced artifact. We replace the filter during the tune-up if it is due; MERV 13 pleated media filters in our service area typically need replacement every 90–120 days depending on household dust load and occupancy. If the existing filter is within its service life, we document its condition and remaining estimated life in the service report.

Capacitor Measurement

Every AC tune-up includes a microfarad reading on the dual-run capacitor (or separate start and run capacitors on older equipment) using a dedicated capacitor tester, not a visual inspection. Capacitors can look physically intact and measure well below the failure threshold. Our replacement threshold is 90% of nameplate value — a 35 microfarad capacitor reading below 31.5 mfd gets flagged; below 28 mfd (80% of nameplate) gets recommended for immediate replacement regardless of symptoms, because a capacitor at 80% of rated capacitance will typically fail within one to three seasonal cycles.

In SunCrest, Corner Canyon, and South Mountain installations where condensers run at elevated ambient temperatures all summer, capacitor service life is significantly shorter than the manufacturer’s rated service life at standard operating temperature. A capacitor rated for 100,000 hours at 65°C operating temperature has a projected service life of roughly 50,000 hours at 75°C, based on the Arrhenius thermal degradation model. At 4,000–5,000 hours of annual runtime, that difference represents approximately 4 fewer years of service life at high-ambient locations versus temperate ones. We track capacitor replacement history in your service file and flag units approaching the accelerated replacement window for high-ambient installs.

Condenser Coil Cleaning

The condenser coil is inspected for debris accumulation and cleaned if needed. In the south Salt Lake Valley, the primary condenser coil fouling sources are cottonwood seed in May and June (which blocks fin channels rapidly), dust and construction debris in developing areas like newer Herriman and South Jordan subdivisions, and the fine particulate that settles on horizontal surfaces during PCAPS inversion events in the preceding winter. A fouled condenser coil restricts airflow across the heat rejection surface, raises head pressure, increases compression ratio, and reduces the system’s ability to reject heat efficiently. A condenser coil that is 20% blocked by debris is operating at approximately 12–15% reduced capacity. We clean with low-pressure rinse from the inside out — never high-pressure from outside, which forces debris further into the fin channels and damages fin structure.

Evaporator Coil Inspection

Evaporator coil inspection covers visible surface condition (biological growth, dust accumulation on coil face, evidence of freeze-thaw cycles from previous low-charge events), drain pan condition and standing water, and condensate drain line flush. A partially blocked condensate drain line is a common source of seasonal water damage calls in Draper and Sandy homes — the drain pan overflows onto the air handler cabinet, into the ceiling of finished basements, or down through the furnace flue chase. We flush the condensate line with a measured CO₂ charge or compressed nitrogen and confirm flow to the drain. Drain pan tablets are placed to inhibit algae growth through the cooling season.

Refrigerant Charge Verification

We verify refrigerant charge on every tune-up by measuring superheat and subcooling, not by connecting manifold gauges and reading pressure. The distinction matters. Refrigerant pressure alone is not a reliable indicator of charge at different outdoor ambient temperatures — the same system at the same charge will show different pressure readings at 70°F ambient versus 95°F ambient. Superheat and subcooling are thermodynamic constants for a correctly charged system; they hold within the target range across ambient conditions. If superheat is 14°F on a fixed-orifice system (above the 8–12°F target), the charge is low and we investigate. If subcooling is 6°F on a TXV system (below the 10–15°F target), the charge is low and we investigate. “Low” refrigerant at a tune-up means a leak somewhere in the system — refrigerant does not disappear in a sealed system without a leak.

Electrical Component Inspection

Contactor: Face inspection for pitting and carbon tracking. A contactor with burned contact faces creates variable resistance under load, causing voltage drop at the compressor terminals during startup. Compressors that run at below-rated voltage during the start sequence experience elevated start winding current that exceeds the winding’s design rating. We document contact face condition with a photo in the service report.
Disconnect: Disconnect box inspection for corrosion on the pull-out fuse block contacts, evidence of overheating (discoloration of insulation), and fuse condition. Disconnects in direct sun on south-facing walls accumulate heat; the blade contacts corrode faster in those locations due to the thermal cycling they experience.
Wiring at equipment: Low-voltage thermostat wiring connections at the air handler terminal board are checked for corrosion and loose connections. A loose R-wire or Y-wire at the terminal board is a common cause of intermittent cooling calls that produce no fault when the technician arrives but recur during peak demand when thermal expansion loosens the connection further.

Motor Amperage Measurements

Compressor amperage: Measured with a clamp meter at the compressor common terminal and compared against nameplate RLA. A compressor drawing significantly above RLA with correct refrigerant charge and clean condenser coil has an internal mechanical problem developing. A compressor drawing significantly below RLA may indicate a weak capacitor.
Condenser fan motor amperage: Compared against nameplate FLA. A fan drawing above FLA with a clean condenser fan blade typically indicates bearing wear. We physically check fan blade balance (an out-of-balance blade causes vibration that accelerates shaft seal and bearing wear) and fan blade angle (some condenser fan blades shift pitch on the hub over time, reducing airflow without a measurable amperage change).
Blower motor amperage: Compared against nameplate FLA with a clean filter installed. A blower drawing above FLA suggests either a dirty blower wheel, a failing motor bearing, or high system static pressure. A blower drawing at nameplate FLA with high system static pressure means the blower is working against a resistance load it was not designed for — the result is reduced airflow, not motor overload, because ECM variable-speed motors regulate airflow rather than speed.

Static Pressure Measurement

Total external static pressure is measured at the air handler. Target under 0.5″ WC for residential blowers. High static pressure at a tune-up visit is a finding that changes the service recommendation — a system running at 0.8″ WC TESP with a clean filter and clean coil has a duct system problem that affects both efficiency and comfort, and adding refrigerant or cleaning the coil will not fix it. We document the static pressure reading in the service report and, if it is above the 0.5″ WC target, provide a preliminary assessment of the likely cause (restricted return, undersized supply runs, collapsed flex duct) and a follow-up recommendation.

Thermostat Calibration and Function Test

Thermostat calibration is checked against the room temperature and the system’s measured return air temperature. Thermostats that are reading 2–3°F high call for cooling more frequently than necessary; those reading low cause the system to undersatisfy the load. We test all operating modes (cool, fan, heat if applicable) and confirm staging operation on two-stage and variable-capacity systems. For communicating thermostats (Carrier Infinity, Trane ComfortLink II, Lennox iComfort S30), we check for firmware update alerts and confirm all equipment communication links are error-free.

Overall System Performance Assessment

At the end of the tune-up, we run the system through a full 15–20 minute cooling cycle and measure supply and return air temperatures at multiple points. The delta-T across the evaporator (target 16–22°F) confirms whether all the individual component checks add up to a system performing correctly at the system level. A delta-T within the target range with correct refrigerant charge, clean coils, adequate airflow, and all electrical components within spec is a system that is ready for the cooling season.

What the Service Report Includes

Every AC tune-up produces a written service report that documents:

Date of service, technician name and license number, equipment model and serial number
Filter condition at arrival and action taken (left in service / replaced)
Capacitor microfarad reading versus nameplate, with pass/flag/replace recommendation
Condenser coil condition and cleaning action taken
Condensate drain line flow status and action taken
Superheat reading (target range 8–12°F for fixed orifice) and subcooling reading (target 10–15°F for TXV)
Compressor, condenser fan, and blower motor amperage readings versus nameplate
Contactor face condition (photo attached)
Total external static pressure reading
Thermostat calibration verification
Delta-T across evaporator coil
Any findings outside acceptable range with recommended action and estimated cost

This document is retained in your customer file. It serves as the maintenance documentation most manufacturers require to support warranty claims and is available to us when you call for a repair so that prior service readings provide a baseline for diagnosis.

When to Schedule Your AC Tune-Up

The optimal window for a pre-season AC tune-up in the south Salt Lake Valley is April through early May, before the first extended warm period. April scheduling gives us time to order and return with non-stock parts (a specific capacitor cross-reference, a hard-to-find contactor for a less-common brand) before the mid-June heat events when call volume surges and parts lead times from our distributors lengthen. By mid-July, same-day parts availability on common components is reliable but non-standard components can have 3–5 day wait times due to regional demand surges.

If you missed the spring window, a tune-up performed in June or early July is still worthwhile — catching a marginal capacitor or a low refrigerant charge before August peak demand is better than catching it during the peak. We do not artificially restrict tune-up availability to the spring window; we schedule them year-round with the honest advice that April–May is the optimal window for maximum lead time before demand peaks.

Frequently Asked Questions

How much does an AC tune-up cost in Draper?: Our standard AC tune-up is priced in the range of $89–$139 depending on system type (single-stage, two-stage, or variable-capacity communicating systems require more diagnostic time). Multi-system homes (two or more AC systems) receive a reduced per-unit rate on the second and subsequent units. Our annual maintenance plan covers two scheduled visits per year (pre-cooling and pre-heating season) at a plan rate below the per-visit price for customers who schedule both. Pricing is confirmed when you call to schedule — we do not use “tune-up specials” that inflate to full rates once the technician is in your home.
What is the difference between an AC tune-up and an HVAC inspection?: An AC tune-up is a performance service: we clean components, measure system parameters, and correct minor issues found during the visit (condensate drain flush, filter replacement, minor electrical tightening). An HVAC inspection is a documentation service: we assess condition, document findings, estimate remaining service life, and produce a written report without performing corrective work during the visit. Inspections are most commonly requested for pre-purchase home evaluations, insurance documentation, or HOA compliance requirements. Tune-ups are the routine annual service; inspections are event-specific.
Does the tune-up include refrigerant recharge?: The tune-up includes refrigerant charge verification by superheat and subcooling measurement. If the charge is found to be within the target range, no action is required. If the charge is found to be low, that indicates a refrigerant leak. We do not add refrigerant to a system without finding and repairing the leak first — a refrigerant top-off without leak repair is a temporary measure that masks the problem and shortens compressor life. A confirmed refrigerant leak found during a tune-up is quoted as a separate repair (leak detection, leak repair, recharge to specification) and approved by you before any refrigerant is added.
My system cooled fine last year — do I really need a tune-up?: Yes, and the reason is the Arrhenius effect on capacitors specifically. A capacitor that measures 32 microfarads in April (slightly below the 35 mfd nameplate) has been degrading all summer under elevated ambient conditions and may be at 26–28 mfd by late July — below the threshold for reliable motor start. The system will cool fine until the day the capacitor fails, which will be the hottest day of the season because that is when the thermal load on the capacitor is highest. “It worked fine last year” is accurate but not predictive of this season’s performance once you understand how capacitor thermal degradation accelerates during summer operation.
Can I do any of the tune-up steps myself?: Yes. Homeowner-appropriate maintenance tasks: filter replacement (every 60–90 days for MERV 8, 90–120 days for MERV 13), condenser coil rinse with a garden hose (gentle spray from inside out if you can access the coil face, outside in if not — low pressure only), condensate drain line flush with white vinegar or a CO₂ charge flush kit, and clearing vegetation or debris from the 12-inch clearance zone around the condenser. What you cannot do without certification: refrigerant system work (EPA Section 608 certification required), capacitor replacement (240V capacitors hold a lethal charge even with power disconnected — they must be discharged before handling), and any electrical work inside the disconnect or panel. The tune-up value is in the instrument-based measurements that homeowners cannot perform without professional tools.

Contact Draper Heating & Air Conditioning

Schedule your pre-season AC tune-up for April or May to get ahead of peak demand. We serve Draper, Sandy, Bluffdale, Riverton, South Jordan, and Herriman — dispatched from 12244 Business Park Dr, two minutes from the I-15 and Bangerter interchange.

Phone: (385) 336-1837
Address: 12244 Business Park Dr #155, Draper, UT 84020
Email: info@draperheatingairconditioning.xyz
Utah DOPL HVAC Contractor License: #11487612-5501
EPA Section 608 Universal: #608U-2011-318472

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AC Tune-Up Draper UT | Draper Heating & Air Conditioning