Carpentersville, IL Heating & Cooling

HVAC Service for Both Halves of Carpentersville

Carpentersville was built in two waves. Meadowdale went up starting in the mid-1950s and passed 6,000 houses by 1982. Then, in the 1990s and 2000s, subdivisions spread west along Randall Road. The two halves of town need very different conversations about heating and cooling.

Call (847) 224-2420
Book Online
  • Mid-century and newer homes
  • Nicor Gas Contractor Circle member
  • ComEd Heat Pump-Trained
  • 24/7 emergency service

Two Housing Eras, Two Different Problems

38.8% built 1940–1969

Meadowdale and the Mid-Century Core

Nearly four in ten Carpentersville homes were built between 1940 and 1969. In a house that age the furnace has likely been replaced more than once, but the ductwork is often original, laid out before central air was common. We check what those ducts can actually move before we size anything to them.

39.1% built 1990–2009

The West Side Along Randall Road

Another four in ten went up between 1990 and 2009. Original equipment in those homes is now 17 to 36 years old, well into the range where a furnace (15–20 years) or an air conditioner (12–17 years) is living on borrowed time.

Measured

Airflow Before Equipment

Undersized returns and leaky ducts cause more comfort complaints than bad equipment. We measure airflow and duct leakage with Minneapolis DuctBlaster equipment instead of guessing.

The median Carpentersville home was built in 1976, according to the U.S. Census Bureau’s American Community Survey.

What That Means When Something Breaks

In a Meadowdale-era house, the question on a no-heat call is rarely just “what part failed.” A furnace that has been swapped two or three times is often sitting on a duct system that was never enlarged for it, so the new blower fights high static pressure, the heat exchanger runs hot, and limit switches trip. We fix the part, then tell you honestly whether the ductwork is shortening the equipment’s life. On the Randall Road side, a 20-year-old builder-grade furnace or air conditioner usually fails in a predictable order: capacitor, then igniter or contactor, then a blower or inducer motor. Each of those is a normal furnace repair or AC repair, but when the third one lands in the same year on a unit that old, we run the repair-versus-replace math with you before you spend more.

Pricing works the same way on both sides of town. There is a flat diagnostic fee to find the problem, then a flat-rate repair price you approve before any work starts. During office hours (9 a.m. to 5 p.m., Monday through Friday) the service call is $130; weekday evenings after 5 p.m. it is $180, and nights, weekends and holidays are $260. Each includes 30 minutes of travel and 30 minutes of diagnostics, and parts are extra. After-hours and weekend calls are priced higher than business-hours calls, and we quote that rate on the phone before we dispatch. A replacement quote is always free, written, and includes the utility discounts. If you would rather spread the cost, you can prequalify for financing in about 2 minutes with no impact to your credit score.

Furnace and AC Replacements Are Permitted Work Here

The Village of Carpentersville lists air conditioner and furnace installation and replacement as permitted work. Its residential permit application asks for the HVAC company and the technician doing the job, and the work gets rough and final inspections.

A replacement quote that doesn’t account for the permit isn’t a complete quote. We file the permit where the municipality requires one and schedule the inspections as part of the job.

If the Fox River or Carpenter Creek Gets Into the Basement

Parts of Old Town, along with property on Carpenter Creek, Four Winds Way Creek and the Fox River, sit in the 100-year floodplain.

If water reached your furnace or boiler, don’t restart it. Shut off gas and power to the equipment only if you can reach the shutoffs safely. Gas controls that have been underwater need to be replaced, not dried out, and the equipment should be inspected before it runs again. Call (847) 224-2420 once the water is out.

Carpentersville HVAC Services

From adding central air to a 1950s house, or ductless where the ducts can’t carry it, to replacing a boom-era system on the west side, every service below is available in Carpentersville with airflow and duct-leakage testing built in where it matters. Each link goes to a page that explains the work, the symptoms and how pricing works.

24/7 no heat

Furnace Repair in Carpentersville

Igniters, flame sensors, pressure switches, blower motors and control boards on every major brand, with a flat-rate price approved before the work.

Nicor discounts

Furnace Replacement in Carpentersville

High-efficiency Amana and Daikin furnaces with the Nicor Gas instant discount taken off the invoice and the old unit hauled away.

All brands

AC Repair in Carpentersville

Capacitors, contactors, fan motors, refrigerant leaks and frozen coils diagnosed and repaired on any brand of central air.

Free quotes

AC Replacement in Carpentersville

Written quotes on R-32 replacement systems, matched to your furnace or air handler and sized to the house.

ComEd discounts

Heat Pump Installation in Carpentersville

Cold-climate inverter heat pumps that keep heating below zero, with the ComEd instant discount taken off the invoice.

Hot-water & steam

Boiler Repair in Carpentersville

Cold radiators, kettling, pressure problems, circulators and controls on hot-water and steam boilers of any brand.

No ductwork

Ductless Mini-Split Installation in Carpentersville

Daikin single- and multi-zone systems for homes without ducts, additions and rooms the main system never reaches.

AprilAire

Indoor Air Quality in Carpentersville

Whole-home humidifiers, dehumidifiers and media air purifiers installed on your existing furnace or air handler.

Any hour

Emergency Furnace Repair in Carpentersville

No heat on a January night is not a wait-until-morning problem. We answer 24/7 and quote the after-hours rate before dispatch.

Any hour

Emergency AC Repair in Carpentersville

AC not cooling in a heat wave, ice on the lines, or a dead condenser: same-day and after-hours response across the Fox Valley.

$240 / year

Maintenance Plan in Carpentersville

A spring cooling tune-up and a fall heating tune-up, one free business-hours service call, priority scheduling and 5% off services.

We also handle air handler repair, smart thermostat installation, humidifier installation, dehumidifier installation, air purifier installation, duct cleaning and dual-fuel heat pump and furnace systems in Carpentersville. Not sure which page fits your problem? Call (847) 224-2420 and describe what the system is doing.

Rebates in Carpentersville

Carpentersville is in ComEd and Nicor Gas territory, so both instant discounts apply. On the ComEd side, a qualifying ducted heat pump earns $900 to $2,000 depending on efficiency tier and heating capacity, and a qualifying ductless or mixed-use system earns $500 or $1,000. On the Nicor Gas side, a 97%+ AFUE furnace earns $225 and a 95% AFUE furnace earns $150, a qualifying 95% AFUE heating boiler earns $350 and a combination boiler earns $500. Add a qualifying smart thermostat on the same invoice and the furnace discount rises by $50; with a ComEd heat pump it adds $75.

Every one of these comes off the invoice at installation. There is no application and no waiting for a check. See ComEd Instant Discounts and Nicor Gas Instant Discounts for the qualifying equipment, or request a free quote with the discounts already applied.

Carpentersville HVAC FAQs

My 1950s house never had central air. Can it be added?

Usually. If the existing ducts can carry the airflow, a coil and condenser can be added to the furnace. If they can’t, ductless mini-splits cool the house without new ductwork.

Do furnace and AC replacements need a permit in Carpentersville?

Yes. The village lists furnace and air conditioner installation and replacement as permitted work, with inspections. We file the permit where the municipality requires one and build the inspections into the schedule.

My furnace sat in floodwater. Can I just turn it back on?

No. Gas controls that have been underwater need to be replaced, not dried out, and the equipment should be inspected before it runs again.

Do ComEd and Nicor Gas discounts apply in Carpentersville?

Yes, for ComEd and Nicor Gas customers. Both instant discounts come off the invoice at installation: $900 to $2,000 on a qualifying ducted heat pump, $500 or $1,000 on ductless, and $225 or $150 on a qualifying high-efficiency furnace.

Is after-hours service in Carpentersville more expensive?

Yes. After-hours, weekend and holiday service calls are priced higher than business-hours calls, and we quote the rate on the phone before we dispatch. The repair itself is a flat-rate price you approve before work starts.

Do you repair all brands, and how do I book?

We repair every major brand of furnace, air conditioner, heat pump and boiler; we install Amana, Daikin and AprilAire. Call (847) 224-2420 any hour, or book online and pick a time that works for you.

Other Towns We Serve

Don’t see your town? Call (847) 224-2420. View all service areas or the Kane County overview.

Old House or New, the Right Fix in Carpentersville

Repairs, replacements and airflow diagnostics from a team that measures before it recommends.

Call (847) 224-2420
Book Online

Planning a replacement? Request a free quote or see financing options.

Discount amounts reflect the 2026 Nicor Gas Energy Efficiency Program for qualifying equipment installed January 1 through December 31, 2026, and are subject to change or cancellation due to funding limits. Rest Assured HVAC LLC is an independent contractor and is not affiliated with or endorsed by Nicor Gas.

Discount amounts reflect the 2026 ComEd Energy Efficiency Program for qualifying equipment and are subject to change or cancellation due to funding limits. Rest Assured HVAC LLC is an independent contractor and is not affiliated with or endorsed by ComEd.