St. Louis HVAC Service | Energy-Efficient Heating & Air Conditioning Installation & Repair
1623 Wendover Ln, St. Louis, MO 63131
Company Overview
Engineered Solutions Heating & Air Conditioning is a St. Louis-based HVAC company founded by Thomas Hoffmann, a master technician and mechanical engineer. With over 30 years of combined engineering and hands-on service experience, Tom specializes in designing and installing energy-efficient heating and cooling systems for both homes and businesses. His expertise is proven through significant local projects, such as re-engineering systems for the Metropolitan Sewer District and Lindell Bank, which resulted in utility cost reductions of up to 40%. The company is built on a foundation of precise engineering, quality service, and a commitment to helping St. Louis residents and businesses achieve greater comfort and lower energy bills.
Frequently Asked Questions
What makes your HVAC installation service different for St. Louis homes?
Our installation process is guided by over 30 years of engineering experience. Owner and mechanical engineer Thomas Hoffmann doesn't just replace equipment; he assesses your home's specific layout, insulation, and airflow to design a system that operates at peak efficiency for our local climate. This engineering-first approach, which has saved local businesses like Lindell Bank thousands on energy costs, ensures your new system maximizes comfort while minimizing your monthly utility bills from day one.
My evaporator coil keeps freezing up. Is this a common St. Louis issue and how do you fix it?
Yes, evaporator coil freeze-ups are a frequent problem in our area, often caused by a combination of clogged air filters, low refrigerant, or airflow issues in our humid climate. As a master technician, Tom diagnoses the root cause—it's rarely just the coil itself. Our repair service involves a thorough system check, addressing issues like refrigerant levels and ductwork obstructions, followed by a cleaning and coil thaw. We also provide maintenance tips to prevent future freeze-ups, protecting your system's efficiency.
Can regular maintenance really improve my system's efficiency and lifespan?
Absolutely. For St. Louis systems battling pollen, humidity, and temperature swings, scheduled maintenance is essential. Our maintenance service goes beyond basic filter changes. We perform calibrated testing on system pressures, electrical components, and airflow—similar to the precision we apply to commercial projects. This proactive care identifies small issues before they become major repairs, helps maintain the energy-efficient performance your system was designed for, and can significantly extend its service life, protecting your investment.
Main Services
- HVAC system repair
- HVAC installation or replacement
- HVAC system maintenance
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |









