Serving Buffalo Grove, IL and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Service was prompt, professional and well done."
Serving Buffalo Grove, IL and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"From start to finish, the service was handled with great professionalism. The team was courteous, quick, and detail-oriented. We noticed an immediate boost in air quality excellent service overall."
+20
Serving Buffalo Grove, IL and surrounding areas
Approved (Corporate)
In business since 1971
Free estimates
Emergency services offered
"They are opportunist and unethical."
Serving Buffalo Grove, IL and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"I want to enthusiastically recommend Zach! We had a recurring problem with our furnace (installed by another HVAC person). Zach returned as often as necessary, investigated the problem thoroughly, and gave us a series of options at different price points. When we decided to go with a new system, his advice was invaluable, and the install went off seamlessly. The things that stand out about Zach: He always calls or texts back promptly. He shows up when he says he will. He communicates clearly. He and his team leave a spotless work space after they leave. He is a true professional, and you will not regret using him!"
+2
Serving Buffalo Grove, IL and surrounding areas
Approved
In business since 2024
Emergency services offered
Credit card accepted
"I was happy with the service. They were efficient and professional. I would hire them again. I highly recommend "
Serving Buffalo Grove, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"It was excellent. They did a great job. It was cool and nice. The price was good. I was totally happy with the work. They cleaned up their mess."
+19
Serving Buffalo Grove, IL and surrounding areas
Approved
Warranties offered
Small jobs welcome
Offers commercial services
Semper Fidelis Services brings military-grade discipline to HVAC and plumbing. Founded on the principle of being "Always Faithful" our team offers 10+ years of technical experience, including an AAS in HVAC/R and Universal EPA certification. We specialize in high-quality, reliable residential and commercial services with a strict commitment at doing the job right the first time.
Serving Buffalo Grove, IL and surrounding areas
Approved
In business since 2025
Free estimates
Offers commercial services
We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!
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