Marc Mittelman

Marc Mittelman operates as an HVAC contractor serving homeowners in Round Rock, Texas, and the surrounding Austin area. He focuses on heating and cooling systems for residential properties where the Texas climate puts heavy demands on equipment year after year. Local houses often face extreme summer heat that strains air conditioners and occasional winter cold snaps that test heating units. Mittelman brings direct hands-on experience with these common issues that come up in Round Rock neighborhoods, helping keep systems running without unnecessary complications or delays.

Homeowners in this part of Texas regularly need AC repairs when units break down during peak heat, full system replacements when older equipment fails, and routine maintenance to prevent breakdowns before they happen. Mittelman handles ductwork fixes, thermostat troubleshooting, and refrigerant checks that keep air flowing properly through homes built in the area. He works on both emergency calls and planned service visits, showing up with the tools to diagnose problems on the spot and complete the job without dragging things out across multiple trips. Customers in Round Rock deal with dust and humidity that affect filters and coils faster than in milder climates, so he emphasizes practical upkeep that matches those conditions.

People who have used his service note solid speed on getting units back online, clear explanations of what went wrong, and fair pricing that avoids surprise add-ons. Quality of the work holds up through the hottest months without callbacks, and communication stays straightforward from the first call to the final check. These points add up across the reviews left for his HVAC work. DIRT Score 4.4 from 17 reviews on Finds.

DIRT Score = confidence-weighted rating across verified review platforms. How is this calculated? →

“I live in The Woodlands, and I recently watched the 20/20 documentary "The Code Breakers." David and his lovely wife, Kristen, are truly a blessing. I can only imagine how terrified some criminals must be, thinking they would never get caught. You two should have your own show! I would love to hear about all the cold cases you have solved. 🙏🏼”

“It makes my heart happy knowing that there are people like David out there using their God given talent and passion for the greater good of the world. I pray that he and the entire team at Othram, Inc. continue to be abundantly blessed in all of the following ways: mentally, physically, emotionally, Spiritually and financially. Thank you from Dallas TX.”

“I just watch Bloodline regarding Carla Walkers death being resolved after 50 years and I am so happy that your company works so hard to help solve crimes old and new thank you from the bottom of my heart for all that you do and if anything ever happens to me or someone in my family I pray that you can help too. Please let me know how I can help by sharing my DNA. Thank you Ms Carmen Zamora someone in my family happens .”

“So glad you guyz were instrumental in finding the killer of those 4 precious souls. Just watched the 20/20 episode. Thank you and God Bless!!”

“I surely hope they will help me with my friend . She had a strong will to press on . There was a police officer that took advantage of her . Her murder has been unresolved for years !”