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TRUSTED BY DEKALB, IL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon100
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Dekalb

Avatar for G & R Heating & Air
G & R Heating & Air
4.6(
136
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving Dekalb, IL and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"I had a great experience with their HVAC services. They repaired my electrical baseboard heater quickly and made sure everything was working perfectly before leaving. The team was professional, punctual, and very knowledgeable. They also installed our new central A/C system smoothly with no issues at all. Communication was clear throughout the process, and the pricing was fair. Highly satisfied with the quality of work and customer service. I would definitely recommend them for any heating or cooling needs."
Additional Photos
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+20

Response time11 hrs
Response rate100%
100 neighbors recently requested a quote
Avatar for Perfect Temp Heating & Cooling
Perfect Temp Heating & Cooling
4.6(
198
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair+1 more

Serving Dekalb, IL and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"I called at 2 pm that my furnace would run but blow cold air, no heat. I am disabled land no heat causes me a lot of pain. The dispatcher set appt for 3-3:30 pm. The owner Brett was here by 3:30. He found and fixed the problem by 4 pm. He explained what he had replaced. He was extremely nice. I would recommend Perfect Temp to anyone who needed HVAC work."
Duct Cleaning
Duct Cleaning
Duct cleaning
Duct cleaning
Duct cleaning

+79

Response time10 hrs
5 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Summers, Plumbing, Heating & Cooling - Yorkville
Summers, Plumbing, Heating & Cooling - Yorkville
5.0(
15
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+14 more

Serving Dekalb, IL and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

At Summers Plumbing Heating & Cooling we try to make service easy & fast! With all of our locations there is a good chance we're helping someone in your neighborhood with their plumbing, heating or cooling issues. We take the stress out of calling a repairman! Our friendly, helpful, and honest technicians are here to make your life easier, not harder than it already is.\n\nOur highly skilled, licensed, and trained technicians perform superior work, every time. We are committed to being honest, thorough, and friendly when we arrive at your house for an estimate or repair.

Avatar for Miracle Mechanical Corp.
Miracle Mechanical Corp.
5.0(
15
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Repair+4 more

Serving Dekalb, IL and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Very professional and great communication. The HVAC Tech answered all my questions, and completed the cleaning and maintenance very quickly. He even took the time to build a p-trap into the drain pipe from the furnace where there hadn't been one, but it definitely should have been there. No more gurgling from the drain pipe anymore. I couldn't ask for more."
Project Photos
Project Photos
Project Photos
Project Photos
Project Photos

+15

Response time5 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Improved Comfort Heating & Air Conditioning
Improved Comfort Heating & Air Conditioning
5.0(
9
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+1 more

Serving Dekalb, IL and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"I had an excellent experience with this HVAC company! They installed 3 central A/C units in my building, and everything was done professionally and efficiently. Special thanks to Angel and Martin for their great work, professionalism, and attention to detail. Highly recommend!"
Boiler Replacement
Response time9 hrs
Response rate87%
25 neighbors recently requested a quote
Avatar for Delta Heating & Air
Delta Heating & Air
4.3(
3
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+14 more

Serving Dekalb, IL and surrounding areas

Approved

In business since 2016

Free estimates

Offers commercial services

Committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Hillside furnace repair
Hillside furnace repair
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Heating and Air Conditioning questions, answered by experts

While "dry" mode on your AC can help reduce humidity levels to some extent, it may not be as effective as a dedicated dehumidifier, especially in areas with extremely high humidity or larger spaces. Dehumidifiers are specifically designed to remove moisture from the air more efficiently, making them a better choice for tackling persistent humidity issues.

This depends on the extent of the freezing. Some ACs only need an hour or two to thaw out, but others may need a full day to completely unfreeze. Once you turn off the system to let it unfreeze, check it periodically to make sure the drain pan doesn’t overflow. When you turn the system back on, keep an eye on it to ensure it doesn’t start freezing again.

Most units are designed only to cool the house down to 20 degrees less than the temperature outside. This means that if it’s 99 degrees Fahrenheit out and you’re trying to cool your home down to 65 degrees, you’ll notice your AC is struggling. 

Lower the blinds on all your windows, turn on your ceiling fans, and keep the thermostat at a consistent temperature to help your AC do its job. Investing in an HVAC maintenance plan also helps because pros will come out to inspect and tune up your unit regularly, keeping it in optimal working condition.

HVAC pros recommend that you replace your AC filter every one to three months to maintain optimal indoor air quality and ensure your HVAC system operates efficiently. However, factors such as filter type, household size, and environmental conditions may influence the frequency of replacement. Regular filter changes help prevent debris buildup, maintain airflow, and prolong the life span of your air conditioning unit.

Traditional central air conditioning systems require ductwork to circulate air throughout the home. Alternatively, you can add air conditioning with a mini-split ductless air conditioning system, which can be just as energy efficient as a central air conditioner. This type of system consists of two units–an outside unit that holds the compressor and condenser and an indoor unit that holds an air-handler. With multi-zone ductless systems, there are multiple indoor air handlers tied to a single outdoor compressor/condenser, allowing the system to cool multiple rooms.

The Dekalb, 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.