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Air conditioning

Air Conditioning Service

Air conditioning service: repair, maintenance and installation from a family-owned company serving Hillside, IL.

Request service Call (708) 673-5633
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SquareHVAC technician servicing a wall-mounted ductless unit in a living room

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Choose your next step

What should you do next?

Not sure if you need service now or can wait? Use these signs to choose a practical next step. Talking through what your system is doing does not commit you to an appointment.

See smoke, flames or signs of a fire? Leave the building, stay out and call 911. If there is no fire and it is safe to use the controls, switch the system off and call SquareHVAC.

Emergency service is available 24/7, including Sundays.

Urgent

Call now

For smoke or flames, leave the building, stay out and call 911. Call us for water leaking from equipment, or if the system has stopped and the quick checks below did not help.

Call (708) 673-5633

Within a few days

Request service soon

Arrange a visit when rooms are uneven, performance has changed, or the system repeatedly needs attention.

Send a service request

No rush

Monitor and plan

If your air conditioner is working normally, follow its routine care schedule and plan a visit when needed. If new symptoms appear, request service sooner.

Plan an AC maintenance visit

Quick checks before you call

  • Check the thermostat: is it set to heat or cool, and is the set point where you expect?
  • Check the filter: a clogged filter limits airflow. Replace it if it is visibly dirty.
  • Check the power: look at the breaker and the equipment switch near the unit.
  • Check the airflow: hold a hand at a supply register and feel whether air is moving.
  • Check the outdoor unit: clear leaves and debris from around it.

Signs to call us about

Signs your air conditioner needs attention

  • Warm air from the vents while the system is running
  • Weak airflow from the registers
  • Short cycles: the system starts and stops every few minutes
  • Ice on the refrigerant lines or the indoor unit
  • Unusual noises: grinding, squealing or clicking
  • The outdoor unit will not start, or trips the breaker

When the air conditioning stops working on a July afternoon, you need one company that can diagnose the problem, explain it in clear language and fix it. SquareHVAC is based in Hillside and serves communities within approximately 30 road miles. We provide air conditioning repair, maintenance and installation for homes and businesses. Serving homeowners and businesses since 2009.

If you already know what you need, go straight to AC repair, AC installation or maintenance visits.

Technician rinsing the coil of an outdoor air-conditioner during residential maintenance

What air conditioning service covers

AC repair

Strange noises, warm air from the vents or a system that will not turn on all point to problems that need a professional diagnosis. Our technicians arrive with common replacement parts and test the system to find the cause. We work on all major brands and system types, including central air, ductless mini-splits and packaged units.

AC maintenance

A maintenance visit once a year keeps the system running and catches small problems before they become failures. The visit includes an inspection, coil cleaning, a refrigerant check, electrical connection testing and thermostat calibration. A maintenance visit is a single bookable appointment, not a contract.

AC installation

An air conditioner that is old, needs repairs often or cannot keep the home comfortable may be ready for replacement. We help you choose a system that fits the home’s size, layout and ductwork, then install it to the manufacturer’s specifications. The Furnace and AC savings calculator compares the efficiency ratings of two air conditioners.

We aim to arrive within 2 hours from the time you call, depending on the distance to your location and current availability. Emergency service is available 24/7, including Sundays. Non-emergency visits outside routine service hours are scheduled for the next working period.

Repair or replacement

Whether to repair or replace depends on the age of the system, what failed and how often it has failed before. A single failed part on an otherwise sound system is usually a repair. An older system that needs one large repair after another is usually a candidate for replacement. We explain both options and what each involves, and you decide.

What the cost depends on

The cost of a repair or installation depends on the system type and age, the actual fault, parts availability, access to the equipment, the complexity of the work and scheduling. Our guide on what HVAC repair costs and what drives the price explains the factors in detail.

The written quote

We explain what we found and what it costs, in writing, with parts and labor listed separately. You review it; you decide. Work only begins once you approve.

All services

What happens during the visit

  1. Step 1

    You contact us.

    Call or send a request. Tell us what the system is doing; we will schedule a visit.

  2. Step 2

    We diagnose.

    A technician inspects the system and finds the cause of the problem. We explain what we found in clear language.

  3. Step 3

    You get a written quote.

    We assess the system, explain what we found and provide a written quote for approval before work begins. The quote lists parts and labor separately.

  4. Step 4

    We do the work.

    The technician completes the approved work and tests the system before leaving.

  5. Step 5

    If we find more.

    When additional work is found after approval, we stop, explain it, supply the added cost in writing and obtain approval before continuing.

More services and guides

Common questions about air conditioning service

Why is my AC running but not cooling my home?
Common causes are a clogged air filter, low refrigerant, a frozen evaporator coil or a compressor problem. Check the filter first — if it is dirty, replace it and see if the cooling improves. If it does not, the system needs a diagnosis.
Can a dirty air filter damage my air conditioner?
Yes. A badly clogged filter restricts airflow, which makes the system work harder and can freeze the evaporator coil. Check the filter monthly and replace it when it looks dirty.
What happens after I request service?
We will call you back to confirm the details. A form request is not a confirmed appointment. We assess the system, explain what we found and provide a written quote for approval before work begins.

Service area

Areas we serve

We serve Hillside and communities within approximately 30 road miles.

All service areas

Next step

Request air conditioning service

Tell us what is happening at your property. We will arrange a visit, explain what we find and give you a written quote with parts and labor listed separately. Nothing starts until you say go.

Request service Call (708) 673-5633