Mark Olis HVAC Repair & Service is a comprehensive Heating, Ventilation, and Air Conditioning (HVAC) contractor dedicated to serving homeowners and business properties throughout Indianapolis, Indiana, and surrounding areas. As a full-service company, Mark Olis HVAC LLC specializes in the installation, repair, and maintenance of a wide range of HVAC systems, ensuring optimal comfort and energy efficiency for every client. The company prides itself on a customer-centric approach, working closely with individuals to understand their unique needs and provide customized solutions. Whether it's a new construction project or an upgrade to an existing system, Mark Olis HVAC is committed to delivering high-quality workmanship and ensuring complete customer satisfaction with every job undertaken. Their mission revolves around providing reliable, efficient, and cost-effective HVAC services that enhance the living and working environments of their community.
What sets Mark Olis HVAC Repair & Service apart is the direct involvement of its owner, Mark Olis, in every project. With a Bachelor of Science degree in Construction Engineering and Management Technology from Purdue University, Mark brings a strong foundation of technical expertise and project management skills to the company. This educational background, combined with hands-on experience, ensures that clients receive knowledgeable and professional service. The company is committed to standing behind every job, prioritizing customer satisfaction above all else. They focus on installing energy-efficient systems and products, helping clients reduce energy consumption and costs. While specific guarantees are not detailed, the emphasis on owner involvement and commitment to satisfaction suggests a dedication to quality and reliability. Mark Olis HVAC also offers personalized service, tailoring solutions to meet the specific space and comfort needs of each customer, making them a trusted partner for all HVAC requirements in the Indianapolis area.
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New gas furnace and AC to replace inefficient electric heat and AC. Mark helped greatly by answering my questions related to...
In January, my heat pump froze up due to a leak. Since my HVAC system was almost 14 years old, I decided to have both the air...
Mark did a great job installing a split system in an upstairs bedroom of my home in Carmel. He was prompt, courteous and prof...
Mark came out on a Sunday very quickly after I contacted him. He determined the problem and was able to fit us in that same d...
Excellent experience. Mark is on time and very knowledgeable. From inquiry, to quote to install the process was smooth. Gre...
Based on 8 recent reviews
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Serves Indianapolis and surrounding areas
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Moderate climate with balanced heating and cooling needs year-round.
Peak Season: June - August, December - February
Tip: Spring and fall are ideal for HVAC maintenance.


