Allegiance HVAC

Allegiance HVAC We are a local, family-owned business of 28 years! Allegiance is a full-service heating and cooling

06/05/2026

"The most attractive vehicle a guy can drive? Ask literally anyone. 😂 "

Another review came in this morning, and while we truly appreciate the kind words, what stands out to us is the dedicati...
06/05/2026

Another review came in this morning, and while we truly appreciate the kind words, what stands out to us is the dedication of our team.

When a local homeowner needed air conditioning and the timing wasn’t ideal, our crew didn’t look at the clock. They focused on the people. They stayed until the job was done, finishing up at 9:30 PM to make sure he had cooling and comfort when they needed it most.

That’s the culture we’re building at Allegiance Heating & Cooling.

It’s about showing up, doing what we say we’re going to do, and taking care of people the right way—even when it means a long day, a late night, or changing plans to help someone in need.

To our technicians, installers, office staff, and everyone behind the scenes: thank you. Reviews like this are a reflection of the effort, professionalism, and heart you bring every day.

We’re proud of this team.

❤️ Family to Family, Our Allegiance Is Your Comfort.

06/04/2026

How much does it cost to install a new motor in an air conditioner? Many homeowners assume replacing an AC motor always means a major repair bill, but the actual cost depends on the type of motor your system uses.

In Mokena, Illinois, installing a new motor in an air conditioner typically starts around $635, including parts and labor, depending on the motor type, system condition, and repair complexity.

In Mokena, it’s important to have your air conditioning system inspected quickly if you notice weak airflow or unusual noises coming from the unit. Catching motor issues early may help prevent additional damage to your system.

If you need help with HVAC repair or AC repair, contact Allegiance Heating & Cooling for professional service you can trust.

Website: https://www.allegianceheating.com/

FAQ: https://www.allegianceheating.com/faq/ -much-does-it-cost-to-install-a-new-motor-in-an-air-conditioner

Blog: https://www.allegianceheating.com/how-much-does-it-cost-to-install-a-new-motor-in-an-air-conditioner/

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06/03/2026

🚨 BIGGEST RED FLAG IN HVAC ESTIMATES 🚨

If your contractor isn’t performing a Manual J Load Calculation, they’re not designing your system…

They’re guessing.

If your AC units look like they’re hosting a family reunion for local weeds and mismatched appliances… we need to talk. ...
06/02/2026

If your AC units look like they’re hosting a family reunion for local weeds and mismatched appliances… we need to talk. 🛋️🌾

On the top , we have the classic “before”—a crooked, mismatched setup where the pipes are doing some creative gymnastics and the garden is slowly swallowing the equipment.

On the bottom , we have the Allegiance standard. Three matching, high-performance Lennox units lined up like soldiers on parade. No weeds, no mess, no crooked pads. Just clean lines, professional install and a neatly placed materials .

Some contractors just replace the equipment. Allegiance builds a legacy. This setup is finalized, professional, and built like stone—it’s going to stay looking exactly this clean and professional.

🚨 Is your home making you sick? 🚨If you or your family are currently struggling with persistent allergies, coughing, or ...
06/01/2026

🚨 Is your home making you sick? 🚨

If you or your family are currently struggling with persistent allergies, coughing, or feeling run-down, the culprit might be hidden right inside your walls.

Many of us blame outdoor pollen or seasonal bugs for our symptoms — but the reality is often much deeper. Literally.

Take a close look at these photos. This is what a neglected HVAC evaporator coil looks like when a furnace isn’t filtered or maintained properly.

Because these coils get damp from condensation, they quickly turn into a breeding ground for:
🦠 Active mold colonies
🧫 Bacterial growth & biofilms
💨 Compacted dust, pet dander, and debris

When your system isn’t installed or maintained correctly, every breath of air your family takes is forced through this layer of grime before circulating into your living room, bedrooms, and kitchen.

Why does this happen?

1. Improper Installation — If the filter rack isn’t sealed or sized correctly, dirty air bypasses the filter entirely.
2. Neglected Maintenance — Without regular filter changes and cleaning, dust builds up and glues itself to the wet coils.

At Light & Friendly, we don’t just care about your temperature — we care about the air you breathe. Proper filtration and routine maintenance are the only things standing between your family and this biological growth.

Don’t let your HVAC system circulate toxins. Let’s get your air clean, healthy, and safe again. 👇

👉 DM us today or call to schedule a comprehensive system inspection and coil sanitization!

Happy Sunday, everyone!It’s the last day of the month, which means your air filter is probably sitting there begging for...
05/31/2026

Happy Sunday, everyone!

It’s the last day of the month, which means your air filter is probably sitting there begging for a retirement plan.

A clean filter helps prevent frozen A/Cs, overheated compressors, and those dreaded “it quit on the hottest day of the year” service calls.

Take 2 minutes, swap that filter, and give your air conditioner a fighting chance this summer.

If it still decides to throw a tantrum, give us a call. We’ve got you covered. 😎❄️

05/29/2026

Completed installation of fully communicating heat pump with variable speed furnace in Frankfort yesterday

There is a real difference between hiring a large franchise and working with a family-owned company that has spent over ...
05/28/2026

There is a real difference between hiring a large franchise and working with a family-owned company that has spent over 25 years building its reputation one household at a time. At Allegiance Heating and Cooling, our technicians are not rushing to hit a quota. They take the time to explain what is going on with your system, answer your questions honestly, and make sure you feel confident in every decision. That kind of service is why so many Mokena homeowners keep coming back and referring their neighbors.

Book your no-cost estimate here: https://estimate.fillout.com/allegianceheatingandcooling

05/28/2026

What are signs that my HVAC capacitor needs to be replaced? Many homeowners do not realize a failing capacitor can cause warm air, startup issues, or a fan that will not spin at all.

A bad HVAC capacitor typically shows signs like a swollen or mushroomed top, a humming outdoor unit with a fan that will not start, or an AC that only blows warm air. Other indicators include the AC failing to turn on, clicking sounds, or unexpected shutdowns. You may also notice leaking fluid, a burning smell, or a fan that only starts after being manually pushed. A multimeter set to MFD can confirm the failure.

In Mokena, catching these issues early can help prevent bigger HVAC repair problems during hot weather when your AC system is working hardest.

If you are noticing any of these warning signs, Allegiance Heating & Cooling can help with professional HVAC repair and AC repair services to keep your system running reliably.

Website: https://www.allegianceheating.com/

FAQ: https://www.allegianceheating.com/faq/ -are-signs-that-my-hvac-capacitor-needs-to-be-replaced

Blog: https://www.allegianceheating.com/what-are-signs-that-my-hvac-capacitor-needs-to-be-replaced/

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Address

8027 189th Street
Mokena, IL
60448

Opening Hours

Monday 8am - 4pm
Tuesday 8am - 4pm
Wednesday 8am - 4pm
Thursday 8am - 4pm
Friday 8am - 4pm

Telephone

+18154641601

Website

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