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Air Conditioning Services in Sandwich, IL and the Fox Valley

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Every Side of Central Air, From One Local Team

Cooling season in Kendall and Kane County is short and unforgiving. When a system quits on a 90-degree afternoon, you do not want to be calling around. Just In Time handles all three sides of central air conditioning from our shop at 485 Duvick Ave in Sandwich: AC repair when the system stops cooling, installation and replacement when it is time for a new one, and annual tune-ups that keep the first two from surprising you.

We install Armstrong Air, Ducane and Goodman systems and service every other major brand of central air, heat pump and packaged equipment, no matter who put it in. Every job is quoted with up-front pricing before work starts, and replacement quotes come with a free in-home estimate rather than a number over the phone.

Our phones are answered from 7:30 AM to 9 PM, seven days a week, at 815-768-4771. Illinois License #055-043535.

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Our Air Conditioning Services

Pick the service that fits your situation, or call and we will point you to the right one

AC Repair

Warm air at the vents, weak airflow, ice on the refrigerant lines, breaker trips at startup. We diagnose the root cause, explain it in plain language, and quote the repair before any work begins. Same-day appointments whenever possible.

AC Repair

AC Installation & Replacement

Right-sized Armstrong Air, Ducane and Goodman systems, sized with a Manual J calculation rather than a guess from square footage. Free in-home estimates, permits pulled, and help identifying available rebates or tax incentives.

AC Installation

AC Tune-Ups & Maintenance

A spring tune-up cleans the coil, checks refrigerant charge, and catches the weak capacitor before it fails in July. Also available year-round through the Red Cape Club, which includes free annual inspections.

AC Maintenance

Which Air Conditioning Service Do You Need?

Not sure which of the three to book? Here is how our technicians think about it.

The AC is running but the air is warm. That is a repair call. The usual suspects are a low refrigerant charge from a slow leak, a failed contactor, a tripped outdoor breaker, or a frozen evaporator coil restricting airflow. Start at AC repair.

The system is 10 to 15 years old and this is the second repair this season. Weigh the age of the unit against the cost of the repair. Systems installed before 2010 usually run R-22 refrigerant, which the EPA phased out of production, so leak repairs get expensive. Ask us to price a replacement alongside the repair.

Everything works and you want it to stay that way. Book a spring tune-up before the first hot stretch, or join the Red Cape Club for guaranteed appointments and free annual inspections.

There is no ductwork, or one room never gets cool. A central system may not be the answer at all. Look at ductless mini-splits for additions, sunrooms, finished basements and problem rooms.

You want to try the easy checks first. Our guide to why an AC is not blowing cold air walks through the checks that are safe to run yourself before you book.

Talk It Through: 815-768-4771

Frequently Asked Questions About Air Conditioning Service

If the system is running but not cooling, start with a repair diagnostic. If it is cooling fine and you simply want it checked before summer, book a tune-up. If the unit is past 10 years old and repairs are stacking up, ask us to price a replacement alongside the repair so you can compare both in writing.

We install Armstrong Air, Ducane and Goodman central air systems, and our technicians service every other major brand of central air, heat pump and packaged system regardless of who installed it.

Once a year, ideally in spring before the first stretch of hot weather. An annual tune-up keeps the coil clean, catches a weak capacitor before it strands you, and helps keep manufacturer warranty coverage intact.

We schedule same-day diagnostic appointments whenever possible during our service hours, which run 7:30 AM to 9 PM, seven days a week. Our trucks carry the common failure parts, so most repairs finish on the first visit.

We cover Sandwich, Yorkville, Aurora, Sugar Grove, Plano, Oswego, Montgomery and Naperville, plus the surrounding Kendall and Kane County communities. Call 815-768-4771 and we will confirm coverage for your address.

Serving Sandwich and the Fox Valley

We run air conditioning calls across Sandwich, Yorkville, Aurora, Sugar Grove, Plano, Oswego, Montgomery and Naperville.

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Financing Options for Your Convenience

Flexible Financing Options for Your Plumbing & HVAC Needs

At Just In Time, we understand that heating, cooling, and plumbing repairs or upgrades can be a significant investment. That’s why we offer flexible financing options to help you get the services you need without financial stress.

Whether you’re facing unexpected HVAC repairs, a water heater replacement, or upgrading to an energy-efficient system, our affordable financing plans (upon credit approval) make it easier to manage costs while keeping your home comfortable.

Why Choose Our Financing Options?

  • Easy application process with quick approvals
  • Affordable monthly payments that fit your budget
  • Financing available for repairs, replacements, and new installations
  • Upgrade to high-efficiency equipment without upfront costs

Ready to explore financing for your HVAC or plumbing project? Contact Just In Time today to learn more about our financing options and keep your home running smoothly without breaking the bank.

Service Finance

Service Finance Company, LLC is a nationally licensed sales finance company and an approved FHA Title I Lender.

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Microf Finance

If you are ready to get your HVAC system replaced and keep your bank account intact, apply today with Microf.

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Our Featured Rebates

We work to bring you rebates that will help you make the changes or repairs that you need for your comfort.

Ameren Illinois Rebates

Energy-Efficient Product Incentives

  • Rebate of $125 for a smart thermostat purchase
  • Rebate up to $1,300 for the installation of a qualifying heat pump
  • Rebate up to $400 for the installation of a qualifying air conditioner
  • Rebate of $50 for a energy-efficient dehumidifier purchase
  • Rebate of $50 when you upgrade your gas water heater to a tankless system
  • Rebate up to $250 for the installation of a qualifying gas furnace
Nicor Gas Rebates

Nicor-Gas Residential Rebates

  • Rebate of $25 for the installation of a qualifying smart thermostat
  • Rebate up to $225 for the installation of a qualifying furnace
  • Rebate of $350 for the installation of a qualifying boiler
  • Rebate of $500 for the installation of a qualifying combination boiler system
  • Rebate of $150 for the installation of a qualifying tankless water heater

Home Heating & Cooling Discounts

  • Rebate up to $1,400 for the installation of a qualifying heat pump
  • Rebate up to $1,000 for the installation of a qualifying mini-split
  • Rebate of $100 for a smart thermostat

Our Featured Specials

We offer super specials to help you get the service you need for a little less.

$50 Off
Service Repair Over $299

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Restrictions apply. Call for more details.

Buy Now, Pay Later
3, 6, or 12 month Financing Options

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Restrictions apply. Call for more details.

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