AC Maintenance in McHenry
Get fast, fair pricing from licensed local pros. Typical McHenry cost: $75 – $200 installed.
- AC tune-up (single)
- $75 – $200
- Coil cleaning
- $95 – $400
- Refrigerant top-off
- $150 – $400
- Annual plan (2 visits)
- $150 – $350
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AC maintenance & tune-up cost.
Typical McHenry pricing for seasonal service, adjusted for local labor. Plans that bundle two visits a year lower the per-visit cost.
In McHenry, IL, a typical AC tune-up runs $75–$200 for a single visit, with coil cleaning adding $95–$400. Many homeowners opt for an annual plan ($150–$350 for two visits) to keep their system efficient in the cold climate. Because the median home was built in 1988, older units may need more attention during maintenance. Illinois requires a mechanical permit for any repair or replacement involving refrigerant, and the 2021 IECC mandates a Manual J load calculation for new installs or major replacements. Most homes use a gas furnace with central AC, so tune-ups focus on both the condenser and the evaporator coil.
- AC tune-up (single visit)Inspect, clean, test, calibrate$75 – $200
- Condenser coil cleaningRestores efficiency on a dirty unit$95 – $400
- Refrigerant top-offIf pressures read low$150 – $400
- Annual maintenance planSpring AC + fall heating, priority service$150 – $350
- Capacitor (if weak)Replaced proactively when out of spec$150 – $400
* A yearly tune-up protects the manufacturer warranty and keeps efficiency from drifting down.
Pricing reviewed · Local data from U.S. Census ACS
HVAC systems in McHenry
U.S. Census ACS- Households
- 10,997
- Homeowners
- 8,442
- 74% own
- Median home value
- $227,300
- Median income
- $83,651
- Median home built
- 1988
- Housing units
- 11,414
With a median home built in 1988, many McHenry AC and furnace systems are at or past their 12–15 year lifespan — a common reason replacements spike here.
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What’s different about McHenry.
Generic cost pages skip the things that actually decide your price and which system fits here — local code, climate, and the money you can claim back.
Recommended unit for McHenry
Given Illinois’s cold climate and gas heating, high-seer2 ac + gas furnace is the sensible default for most McHenry homes. A pro can confirm the right size and system for your home with a load calculation.
Sources: ComEd Heating & Cooling Discounts · EIA Illinois state energy data · EnergySage Illinois heat pump incentives
What McHenry code requires
Installing or replacing an HVAC system in McHenry follows Illinois rules under the state mechanical code. Here’s what applies statewide:
- PermitRequired
Mechanical permit pulled by your licensed HVAC contractor; covers equipment, refrigerant, and the electrical disconnect.
- SEER2 minimum13.4 SEER2 (North)
Federal North-region minimum for new split-system AC. Higher tiers cut bills and unlock rebates.
- Load calculationRequired (Manual J)
Sizing by load calc — not rule of thumb — prevents an oversized unit that short-cycles and never dehumidifies.
- RefrigerantR-454B / R-32 (R-410A phased down 2025+)
- Good to know—
Illinois follows the 2021 IECC, which requires an ACCA Manual J load calculation for HVAC sizing on permitted installs; cold-climate winter sizing matters in the north.
Sources: ComEd Heating & Cooling Discounts · EIA Illinois state energy data · EnergySage Illinois heat pump incentives
Not sure which rules and rebates apply to your home?
A licensed McHenry pro will walk you through code, the right unit, and what you can claim back — in one quick call.
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Money back in McHenry
Illinois heating is mostly gas, which shapes the money back:
- Stateup to $1,675 (heat pump); up to $1,000 ductless mini-splitComEd Heating & Cooling Discounts (air-source/ducted heat pump) →
State or utility program — verify eligibility before you buy.
- Statearound $900 for a ducted air-source heat pump (instant rebate)Ameren Illinois Energy Efficiency HVAC rebates →
State or utility program — verify eligibility before you buy.
- Federal30% of cost, up to $2,000Federal 25C tax credit — heat pump →
For a qualifying ENERGY STAR heat pump meeting the CEE efficiency tier. Claimed on your federal return.
- Federal30% of cost, up to $600Federal 25C tax credit — central AC →
For a qualifying high-efficiency central air conditioner.
The federal 25C Energy Efficient Home Improvement Credit (30%, up to $2,000 for a qualifying heat pump and up to $600 for a high-efficiency central AC) historically applied in every state, though recent federal legislation phased it out at the end of 2025 — verify current eligibility.
Comfort back in three steps.
- 1
Tell us what’s wrong
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- 2
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- 3
Repair or replace, fast
Your pro confirms the price on-site and gets your comfort back. Most jobs done in a few hours.
AC Maintenance in McHenry, explained.
What affects AC tune-up cost in McHenry?
Prices vary by the scope of work: a basic tune-up (inspection, cleaning, filter change) costs less than a full coil cleaning or refrigerant check. Older homes (median built 1988) may have dirty coils or aging parts that require extra labor. If the technician finds a leak or needs to recover R-410A (phased down after 2025), that adds cost. Annual plans offer a more affordable per-visit rate. Permit fees for any refrigerant work also factor in.
Common AC problems found during tune-ups in McHenry
Dirty evaporator coil
Homes built in the 1980s often have accumulated dust and debris on the indoor coil, reducing airflow and efficiency.
Refrigerant leaks
Older R-410A systems may develop small leaks; with the refrigerant phase-down, repairs can be more involved.
Frozen condenser coils
Cold-climate operation or low refrigerant can cause the outdoor coil to ice up, especially during mild spring or fall weather.
AC Maintenance FAQs — McHenry
A mechanical permit is required in Illinois for any work involving refrigerant or electrical connections. A basic tune-up that only cleans coils and changes filters typically does not require a permit, but if the technician must open the sealed system, a permit is needed.
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