Mark

Service Technician

Certifications: EPA certified universal, 597 apprenticeship, COD certified for HVAC, ETI certified #1 in class, national honor society from ETI.

Work history: Started my HVAC career in 2005 and have been with Tempco since 2016. I am a local 73 commercial service specialist.

I like the personal interactions with my customers and being able to fix issues that will help make their home more comfortable. It is also very satisfying being with Tempco because they support my growth in the HVAC field and provide a working environment that allows me to achieve my goals.


Recent Jobs and Reviews

Rated 5.0 out of 5 stars based on 488 customer reviews

Customers say: The overall sentiment across these reviews is overwhelmingly positive, reflecting strong customer satisfaction and trust. Customers consistently express appreciation for the company's reliability, professionalism, and honest business practices. A dominant theme is the emphasis on trustworthiness and integrity, with reviewers highlighting how the company prioritizes customer interests over unnecessary upselling or overcharging. Long-term loyalty is evident, with customers expressing confidence built over many years of service. The technicians are frequently praised for being knowledgeable, personable, and punctual, creating a sense of dependability that customers clearly value. Communication and ease of scheduling are noted as strengths, contributing to a smooth and stress-free service experience. The tone throughout is one of genuine appreciation and recommendation, with customers expressing gratitude for the quality workmanship, efficiency, and courteous interactions. Overall, the reviews convey a strong sense of satisfaction with both the technical expertise provided and the customer-focused approach that fosters lasting relationships.

At a glance

Tempco Heating and Air Conditioning has completed 25 jobs on October 23, 2025.

The 38 customer reviews shown here average 4.9 out of 5.

Recent work covers Elgin, IL, Naperville, IL, Western Springs, IL, Aurora, IL and Oswego, IL.

Reviews

Speedy Service
The job I needed done was done very fast and efficiently. Mark was also very polite and respectful. I was very satisfied with the service provided.
Rodriguez - Plano, IL 60545
Great Service!
Tobi - Bolingbrook, IL 60490
Excellent service
Mark was very polite, courteous and professional. He was very knowledgeable and explained things well.
Paulette - Yorkville, IL 60560
Great service
Vivian - Oswego, IL 60543
Efficient Friendly Service!
Kent - Naperville, IL 60563
Professionalism at its finest
I was very happy with the service from Mark at Tempco. He advised me that I was not going crazy and that the blower was having issues and the rpms were running way to low. My builder told me that I should be fine which clearly was not correct. Mark fixed my furnace and answered any questions I had in a professional manner.
Chistopher - Warrenville, IL 60555
yearly check
Professional in nature.
Pogue - Aurora, IL 60502
Always on time and prompt service
Mark has been very professional and taken care of our problems in a swift and smooth matter. These guys always put the customer first.
Zee - Naperville, IL 60540
Great Service !!!
Christabel - Aurora, IL 60502
Great service
Sandy - Bensenville, IL 60106
Great service from mark
He was checked the unit and everything inside
Phyllis - Elmhurst, IL 60126
Great service
Tech very knowledgeable
Don - Oswego, IL
Great service with Mark
Our service person, mark, was kind and considerate. He has agreed to come back a 2nd time to check the freon levels (the weather was a bit too cold on the day of our apt.).
Donna - Western Springs, IL 60558
Quick fix, courteous employee
Cunningham - Lockport, IL 60441
Great Service
I would highly recommend Tempo to all my friends and family. Mark serviced my furnace and told me about the air conditioning special. He is very trustworthy and provides great service.
Collen - Orland Park, IL 60462
Great AC repair
Mark (service tech) was very prompt, polite and explained what needed to be done thoroughly. I was able to schedule our appointment within a few days of calling, even with temps in the 80s! Highly recommend.
Jill - Western Springs, IL 60558
Mark was on time and very helpful
Chris - Joliet, IL 60431
Great Service
Mark came out to check a problem we had with our A/C. Mark was able to quickly identify the issue and correct it. Mark was friendly and professional and TEMPCO is lucky to have him as a Team member. I look forward to having TEMPCO maintain our HVAC system.
Scott - Plano, IL 60545
Today's visit
Great job, on time, and very educational.
FXC - Western Springs, IL 60558
Great service appointment!
Mark was great and showed up on time and did a thorough check and cleaning of my a/c and furnace. Scheduling an appointment with customer service was easy and pleasant! Thank you!
Gina - Downers Grove, IL 60515
Tempco
Christopher - Wheaton, IL 60187
very helpful and informative rep
Rojas - Hanover Park, IL 60133
Great service at a very competitive price.
Dechiara - Wheaton, IL 60187
Thanks!
Great experience overall.
Ryan - Oswego, IL 60543
Great Service and awesome technician.
Almost same day appointment, solved in 15 minutes. Technician was great and very professional.
Carles - Bolingbrook, IL 60490
Excellent Service
My call was answered right away. Tempco arranged for a service person to make our call between 12-3. I got a call from the technician to let me know that he finished his service call early and asked if he stop by earlier. He arrived before the scheduled time frame and quickly figured out - and fixed our problem. He was a very helpful and courteous young man.
Carolyn - Yorkville, IL 60560
Impressed Customer
I was very impressed by their speed of response and service; as well as the professionalism and personality of my technician. Having your furnace go out is stressful but they made the stressful situation very manageable and easy. Well done!
Jeff - Winfield, IL 60190
Trustworthy Service
All went smoothly. Very pleased with Tempco.
Dianne - Aurora, IL 60502
Great Service
Mark was fantastic and went the extra mile. He didn't rush to get to his next job. Took the time to explain how things work!! He was extremely helpful!
Deitch - Carol Stream, IL 60188
Great service
Tim - Western Springs, IL 60558
great! i will call you when I am in need services
The teh was very knowledgeable and explained what was going on.
Hill - Montgomery, IL 60538
Mark is the best
Mark is very good at what he does. He takes the time to explain everything and makes sure you understand. He came by multiple times to our house so far and its been a pleasure to work with him.
Madhav - Naperville, IL 60563
Good service
Dominque - Plano, IL 60545
Great service
Joanne - Warrenville, IL 60555
Great Service - Good - relevant information
Mark visited the house as part of warranty check. He took time to explaint the working of the system - important routine and relevant maintanence activities to be performed. Also gave some pointers as an experienced professional.
Anshu - Westmont, IL 60559
Great Service
Mark was great. The pricing can be improved a little but I was happy overall.
Pank - Naperville, IL 60540
Great service
great service. very detail oriented. recommened.
Becca - Plainfield, IL 60586
Great Service
Mark J was excellent and very professional/informative. I would highly recommend his service to other perspective customers.
Bill - Lemont, IL 60439

Job Locations

Mark J.
Mark J.
Furnace maintenance
Huntley, IL 60142
Mark J.
Mark J.
Furnace maintenance
Lincolnshire, IL 60069
Mark J.
Mark J.
Furnace maintenance
Fox Lake, IL 60020
Mark J.
Mark J.
Furnace maintenance
Fox Lake, IL 60020
Mark J.
Mark J.
Furnace maintenance
Elgin, IL 60123
Mark J.
Mark J.
Furnace maintenance
Barrington, IL 60010
Mark J.
Mark J.
Furnace Maintenance
Fox River Grove, IL 60021
Mark J.
Mark J.
Furnace maintenance
Village of Lakewood, IL 60014
Mark J.
Mark J.
Furnace maintenance
Wheaton, IL 60187
Mark J.
Mark J.
Furnace Maintenance
Elgin, IL 60124
Mark J.
Mark J.
Furnace maintenance
Mettawa, IL 60045
Mark J.
Mark J.
Furnace maintenance
Long Grove, IL 60047
Mark J.
Mark J.
Furnace maintenance
Geneva, IL 60134
Mark J.
Mark J.
Furnace maintenance
Elgin, IL 60124
Mark J.
Mark J.
Furnace maintenance
Elgin, IL 60124
Mark J.
Mark J.
Furnace maintenance
Glenview, IL 60026
Mark J.
Mark J.
Furnace maintenance
Mettawa, IL 60045
Mark J.
Mark J.
Furnace maintenance
Carpentersville, IL 60110
Mark J.
Mark J.
Furnace maintenance
Elgin, IL 60124
Mark J.
Mark J.
Furnace maintenance
Elgin, IL 60123
Mark J.
Mark J.
Furnace maintenance
Elgin, IL 60124
Mark J.
Mark J.
Furnace maintenance
Lincolnshire, IL 60069
Mark J.
Mark J.
Furnace maintenance
Mundelein, IL 60060
Mark J.
Mark J.
Furnace maintenance
Huntley, IL 60142
Mark J.
Mark J.
Install AC
South Elgin, IL 60177