Get matched with top window a/c unit installers in Downers Grove, IL

"Good. Work completed in about 6 hours total. Met expectations."

"Outstanding experience. Very thorough. Very professional. I will most certainly consider them for future projects!"

"Amer Talla is the best! He knows the industry, he is an expert HVAC person all-around. Actually, he is a general contractor. He diagnosed the problem, provided a detailed solution, and was the consummate professional. He is not just the expert you should call because he is knowledgeable and professional, BUT he is thorough. You can tell he loves what he does and he cares about his customers. He’s the one I will call for future maintenance and anything else HVAC-related. I highly recommend him!"

"Rob did an excellent job at mounting unit on basement wall. He also did a great job cleaning up and removing old tv. Would highly recommend for jobs."

"yes he put my fan in "

"Rory did a wonderful job he is a very very good Professional Service man I would recommend him to everyone I know and I will use him again when I need him"

"Workmanship and dependability were excellent "

"Efficient work and fair."

Hi, my name is Andrew!\n\nI am an EPA 608 certified and fully insured HVAC technician currently working for a large HVAC company. I am in the process of launching my own business and am excited to start building lasting relationships with new clients.\n\nWhether you need a seasonal tune-up, a new installation, or a repair service, I am here to help. I specialize in the following systems:\n\n- Air Conditioners\n- Furnaces\n- Boilers\n- Water Heaters\n- Rooftop Units\n- Unico Systems\n- Hydronic Systems\n\nI offer competitive pricing without compromising on the quality you would expect from a large company. Feel free to call or text me anytime — I would love to earn your trust and your business!\n

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.