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Heating and air conditioning pros in Round Lake Park

Avatar for Cahill Heating, Cooling, Electric, Plumbing & Sewer
Cahill Heating, Cooling, Electric, Plumbing & Sewer
28983 N Herky Dr
5.00(
8
)
Approved Pro
Cahill Heating, Cooling, Electric, Plumbing & Sewer
28983 N Herky Dr
5.00(
8
)
Approved Pro
Customers say: Quick response
26 local quotes requested
52 years of experience

Cahill Heating, Cooling, Electric, Plumbing & Sewer is 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.

"Miguel and his Cahill team were great! Very courteous and conscientious in regards to cleanliness and care in our home. Worked quickly and seamlessly as a team. Would recommend to anyone needing HVAC service or installation. Our salesperson Molly is great too!!"

Michael M on August 2024

Cahill Heating, Cooling, Electric, Plumbing & Sewer is 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.

"Miguel and his Cahill team were great! Very courteous and conscientious in regards to cleanliness and care in our home. Worked quickly and seamlessly as a team. Would recommend to anyone needing HVAC service or installation. Our salesperson Molly is great too!!"

Michael M on August 2024


Avatar for Optimized Air LLC
Optimized Air LLC
423 Windridge Drive
5.00(
3
)
Approved Pro
Optimized Air LLC
423 Windridge Drive
5.00(
3
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

Every property is unique, and we recognize that a one-size-fits-all approach won't cut it. Optimized Air specializes in crafting personalized solutions tailored to your specific needs. Whether you need a new system installation, repairs, or maintenance, we'll take the time to assess your space and recommend the best-suited options to optimize your indoor comfort and energy efficiency. We are dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities. We look forward to working with you!

"I could tell Justin was experienced and he knew exactly what kind of AC I needed. Everything is working great now!"

Kyle G on September 2023

Every property is unique, and we recognize that a one-size-fits-all approach won't cut it. Optimized Air specializes in crafting personalized solutions tailored to your specific needs. Whether you need a new system installation, repairs, or maintenance, we'll take the time to assess your space and recommend the best-suited options to optimize your indoor comfort and energy efficiency. We are dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities. We look forward to working with you!

"I could tell Justin was experienced and he knew exactly what kind of AC I needed. Everything is working great now!"

Kyle G on September 2023


Avatar for G & R Heating and Air, LLC
G & R Heating and Air, LLC
PO Box 78
4.67(
876
)
Approved Pro
G & R Heating and Air, LLC
PO Box 78
4.67(
876
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
201 local quotes requested

Stay comfortable in your home or business with heating and cooling HVAC services from G & R Heating and Air, LLC of Gilberts. We specialize in service, repair and new installs. With over 20 years of industry experience, we have the knowledge and understanding to get the job done right. Unlike others in the HVAC industry, we will not nickel and dime you. For us, customer satisfaction is our primary goal. We realize that fair prices and honest work coupled with excellent customer service will keep our customers happy. We are only happy when you are happy! Call us today!

"Good and fast"

Elodie D on January 2025

Stay comfortable in your home or business with heating and cooling HVAC services from G & R Heating and Air, LLC of Gilberts. We specialize in service, repair and new installs. With over 20 years of industry experience, we have the knowledge and understanding to get the job done right. Unlike others in the HVAC industry, we will not nickel and dime you. For us, customer satisfaction is our primary goal. We realize that fair prices and honest work coupled with excellent customer service will keep our customers happy. We are only happy when you are happy! Call us today!

"Good and fast"

Elodie D on January 2025


Avatar for ThermaTek Heating and Air
ThermaTek Heating and Air
W. 1140 Poplar Rd.
4.72(
315
)
Approved Pro
ThermaTek Heating and Air
W. 1140 Poplar Rd.
4.72(
315
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
91 local quotes requested

Welcome to ThermaTek Heating and Air. We are excited to exceed your expectations! As industry professionals, we will handle all your needs with the high-quality expertise and attention to detail your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us today for your free estimate!

"Very fast and good work ,jobs well done "

Hu Y on February 2025

Welcome to ThermaTek Heating and Air. We are excited to exceed your expectations! As industry professionals, we will handle all your needs with the high-quality expertise and attention to detail your home or business deserves. We offer competitive prices and customer satisfaction is our number one priority. Call us today for your free estimate!

"Very fast and good work ,jobs well done "

Hu Y on February 2025


Avatar for HOT COLD AIR INC.
HOT COLD AIR INC.
310 Melvin Drive, Unit 13
5.00(
5
)
Approved Pro
HOT COLD AIR INC.
310 Melvin Drive, Unit 13
5.00(
5
)
Approved Pro
Customers say: Quick response
25 local quotes requested
10 years of experience

Welcome to Hot Cold Air, the leading HVAC company in Chicagoland. With our unwavering commitment to excellence, we offer a comprehensive range of services to cater to all your heating, cooling & fresh air needs: - AC Repair - AC Maintenance - AC Replacement or New Air Conditioners Installations - Furnace Repairs - Furnace Maintenance - Furnace Replacements & New Furnace Installations - Air Duct Cleaning - Thermostat Replacement & Thermostat Repairs - Water Heater Repairs & New Water Heater Installations - Humidifiers Repair & Installations - Air Quality Services Choose Hot Cold Air for unmatched expertise and service in your city. Contact us today to create the perfect indoor environment for your home or business.

"I cannot recommend Hot Cold Air enough! Their dedication to customer service is truly outstanding. From the moment I called, they showed complete respect for my time and scheduled the appointment at my convenience. They arrived right on time, and their team was not only professional but also incredibly courteous and clean, leaving no mess behind. What impressed me the most was their communication. They kept me informed every step of the way, providing updates on the progress and making sure I understood what was being done. Their honesty and transparency were refreshing—they honored every coupon without hesitation and offered fair pricing for top-notch service. It’s rare to find a company that combines timeliness, cleanliness, and a genuine commitment to customer satisfaction so seamlessly. I will definitely be calling Hot Cold Air again for any HVAC needs. Highly recommend!"

Erjon M on January 2025

Welcome to Hot Cold Air, the leading HVAC company in Chicagoland. With our unwavering commitment to excellence, we offer a comprehensive range of services to cater to all your heating, cooling & fresh air needs: - AC Repair - AC Maintenance - AC Replacement or New Air Conditioners Installations - Furnace Repairs - Furnace Maintenance - Furnace Replacements & New Furnace Installations - Air Duct Cleaning - Thermostat Replacement & Thermostat Repairs - Water Heater Repairs & New Water Heater Installations - Humidifiers Repair & Installations - Air Quality Services Choose Hot Cold Air for unmatched expertise and service in your city. Contact us today to create the perfect indoor environment for your home or business.

"I cannot recommend Hot Cold Air enough! Their dedication to customer service is truly outstanding. From the moment I called, they showed complete respect for my time and scheduled the appointment at my convenience. They arrived right on time, and their team was not only professional but also incredibly courteous and clean, leaving no mess behind. What impressed me the most was their communication. They kept me informed every step of the way, providing updates on the progress and making sure I understood what was being done. Their honesty and transparency were refreshing—they honored every coupon without hesitation and offered fair pricing for top-notch service. It’s rare to find a company that combines timeliness, cleanliness, and a genuine commitment to customer satisfaction so seamlessly. I will definitely be calling Hot Cold Air again for any HVAC needs. Highly recommend!"

Erjon M on January 2025


Avatar for Master Services, Inc.
Master Services, Inc.
N3481 County Rd H
4.59(
229
)
Approved Pro
Master Services, Inc.
N3481 County Rd H
4.59(
229
)
Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
127 local quotes requested

Master Services Inc. has been in business since 1990 serving Walworth, Jefferson, Kenosha, Racine, Waukesha counties with ELITE Plumbing, Heating, Air Conditioning and Indoor Air Quality service. We pride ourselves with our 100% money back guarantee. We are only 1 in 4 companies in Wisconsin that are certified to wear the Technician Seal of Safety patch. This means you can trust that each one of our technicians are drug tested, background checked and professionally trained. We have one of our office staff answering the phone 24 hours a day 7 days a week." We Think You're Kind of a Big Deal"

"Customer service was great! Respectful and polite."

James M on January 2025

Master Services Inc. has been in business since 1990 serving Walworth, Jefferson, Kenosha, Racine, Waukesha counties with ELITE Plumbing, Heating, Air Conditioning and Indoor Air Quality service. We pride ourselves with our 100% money back guarantee. We are only 1 in 4 companies in Wisconsin that are certified to wear the Technician Seal of Safety patch. This means you can trust that each one of our technicians are drug tested, background checked and professionally trained. We have one of our office staff answering the phone 24 hours a day 7 days a week." We Think You're Kind of a Big Deal"

"Customer service was great! Respectful and polite."

James M on January 2025


Duane Blanton Plumbing, Sewer & Drainage Inc.
600 LONG LAKE DR
4.50(
2
)
Approved Pro
Duane Blanton Plumbing, Sewer & Drainage Inc.
600 LONG LAKE DR
4.50(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
107 local quotes requested

Duane Blanton Plumbing, Sewer, Heating & Cooling has been serving Chicagoland and surrounding areas since 1988. Over 30+ years, we've developed the kind of service that surpasses expectations: a motivated team built on providing full-service support for your home, be it repair, maintenance or install. Our team licensed and certified technicians will guide you through every step of the process, from the initial phone call to service completion. This kind of reliability, transparency, professionalism and customer involvement allows us to develop long-lasting relationships with our clientele.

"."

Keun Y on January 2025

Duane Blanton Plumbing, Sewer, Heating & Cooling has been serving Chicagoland and surrounding areas since 1988. Over 30+ years, we've developed the kind of service that surpasses expectations: a motivated team built on providing full-service support for your home, be it repair, maintenance or install. Our team licensed and certified technicians will guide you through every step of the process, from the initial phone call to service completion. This kind of reliability, transparency, professionalism and customer involvement allows us to develop long-lasting relationships with our clientele.

"."

Keun Y on January 2025


Avatar for 24 Hour Home Comfort Services, Inc.
24 Hour Home Comfort Services, Inc.
9209 S. Route 31
4.83(
194
)
Approved Pro
24 Hour Home Comfort Services, Inc.
9209 S. Route 31
4.83(
194
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
63 years of experience

Welcome to 24 Hour Home Comfort Services, Inc.! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! Check out our website at www.24hrhcsIL.com!

"nothing"

Henry B on February 2023

Welcome to 24 Hour Home Comfort Services, Inc.! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! Check out our website at www.24hrhcsIL.com!

"nothing"

Henry B on February 2023


Avatar for Legendary Service
Legendary Service
249 Peterson Rd
4.94(
18
)
Approved Pro
Legendary Service
249 Peterson Rd
4.94(
18
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 local quotes requested

With over 50 years of experience in HVAC and plumbing, Legendary Service is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

"Polite and professional, timely and efficient."

Dionna S on October 2024

With over 50 years of experience in HVAC and plumbing, Legendary Service is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you!

"Polite and professional, timely and efficient."

Dionna S on October 2024


Avatar for ML Electric, Inc.
ML Electric, Inc.
3046 Lincoln Street
5.00(
9
)
Approved Pro
ML Electric, Inc.
3046 Lincoln Street
5.00(
9
)
Approved Pro
Customers say: Quick response
28 local quotes requested
8 years of experience

ML Electric, Inc. is 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

"great job! good price!"

Takahiko T on February 2025

ML Electric, Inc. is 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

"great job! good price!"

Takahiko T on February 2025

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Heating and air conditioning services FAQs

Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.

While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.  

The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.

Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.  

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