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Best heating and air conditioning pros near Ottawa, IL

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TRUSTED BY OTTAWA, IL HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon75
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Ottawa - Updated Nov 2026

Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+47 more

Serving Ottawa, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

We are family owned and operated. We service all brands, makes and models. From furnace and water heater repair and replacements, all the way to a leaking kitchen faucet or bathroom toilet. One call REALLY does it all. Faucets, toilets, sinks, drain rodding, water heaters, boilers, furnaces, air conditioners and humidifiers. New construction to radiant heat. You know you called the pros the first time. Licensed, bonded and insured, we offer easy approval and affordable financing as well!

16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Dedication Restoration
Dedication Restoration
4.6(
115
)
Air Ducts & Vents - Clean

Serving Ottawa, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Chad and his team were very friendly yet efficient and professional--they even came an hour early due to being ahead of schedule for the day. I am currently working from home and did not feel disrupted at all while they were cleaning my HVAC system!"
Response time4 hrs
13 neighbors recently requested a quote
Recommended by95%of homeowners
North South Heating and Cooling
New to Angi
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+15 more

Serving Ottawa, IL and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

5 neighbors recently requested a quote
Avatar for Valor Facility Solutions LLC
Valor Facility Solutions LLC
New to Angi
Air Ducts & Vents - Clean

Serving Ottawa, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Welcome to Valor Facility Solutions LLC!\n\nWe are a veteran-owned, family-operated commercial cleaning and facility solutions company proudly serving Chicago, Northwest Indiana, and surrounding communities.\n\nAt Valor, we understand that a clean, professional environment matters. Our mission is to provide dependable, high-quality cleaning services with the same values we believe in—integrity, discipline, attention to detail, and exceptional service.\n\nWhether you need recurring office cleaning, facility maintenance, move-in/move-out cleaning, or customized janitorial services, we’re ready to earn your business.\n\nWhen you choose Valor Facility Solutions, you’re choosing a local company that takes pride in showing up, doing the job right, and building long-term relationships with our customers.\n\nProfessional Service. Military Precision. A Standard You Can Trust.\n\n— Temiaka & Tonya Sanchez\nOwners, Valor Facility Solutions LLC

Residential Deep Cleaning
Success Landscaping
New to Angi
Air Ducts & Vents - Clean

Serving Ottawa, IL and surrounding areas

Approved

At AK Enterprise, we are committed to providing reliable, high-quality landscaping services that bring beauty and value to every property we work on. We specialize in lawn care, landscape design, maintenance, cleanup services, and outdoor improvements tailored to each customer’s needs. Our goal is simple: deliver dependable service, attention to detail, and results that exceed expectations. Whether it’s maintaining a healthy lawn or transforming outdoor spaces, we take pride in helping our customers create landscapes they can enjoy year-round.

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Heating and Air Conditioning FAQs, answered by experts

Yes, you can run an attic fan with the AC on. In fact, you don’t have a choice with a passive attic fan. Plus, when an attic fan draws out hot air from the attic, it helps regulate the temperature of your whole home, so your AC doesn't have to work as hard.

Turn your system off when you're toasty or when you're out to prevent unnecessary wear. Using the timer on your thermostat so that it switches off when it reaches a certain temperature or turns on just before you get back from work is best. An annual maintenance contract can be helpful to ensure your system receives these important services at regular intervals.

Here’s the cost formula to find out how much it’ll cost you to run a window air conditioner in your home:  Watts * (hours used) / 1,000 * (Local kWh) = daily cost of running a window unit. If you need help calculating the cost of running your window AC unit, consult an AC repair or installation pro for an accurate estimate.

No. HVAC, which stands for heating, ventilation, and air conditioning, includes all of the systems that work together to regulate a building’s temperature and humidity levels. In comparison, air conditioners only provide cooling. You can have an air conditioner as part of your HVAC system, but not all HVAC systems include air conditioners.

Assessing location for airflow, convenience, and minimal noise impact.

The Ottawa, IL homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.