When your HVAC system fails to perform at its best, the consequences can be more than just uncomfortable—they can impact energy costs, indoor air quality, and system longevity. At Hely Heating and Air Conditioning Co., we've been the preferred heating and air conditioning contractor in Mehlville, MO, since 1969. With over five decades of experience, we deliver reliable heating and cooling services that help both homeowners and businesses maintain optimal indoor comfort year-round.
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Precision-Engineered HVAC Services for Mehlville Properties
Each building in Mehlville brings its own set of HVAC requirements. That's why generic fixes often fall short. Hely Heating and Air Conditioning Co. provides customized HVAC solutions that align with your property's structure, insulation characteristics, and energy goals. Whether you're managing a mid-century home or a newer commercial facility, we analyze your environment thoroughly to ensure peak system efficiency and comfort.
Our tailored approach includes:
- HVAC Load Calculations to determine accurate system sizing
- Efficiency Assessments to minimize energy waste
- Technology Integration for zoning, smart controls, and automation
- System Recommendations that meet your comfort and budget goals
Let us design a smarter HVAC solution for your Mehlville property. Contact us to schedule a consultation.
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Energy Efficiency Meets Long-Term Performance
Today's energy-conscious environment demands systems that do more with less. We specialize in energy-efficient HVAC upgrades designed to reduce your monthly energy consumption and improve long-term reliability.
Our efficiency-focused services include:
- High-SEER Rated System Installations
- Ductwork Improvements to Eliminate Air Loss
- Smart Thermostat Setups for precision temperature control
- Rebate & Incentive Guidance to help you save on new installations
Whether you're retrofitting an older system or planning a new build, we ensure every recommendation supports both comfort and sustainability.
Looking to reduce your energy costs? Let us help you upgrade to a more efficient HVAC system in Mehlville.
Indoor Air Quality and Airflow Optimization
Clean air and proper airflow are essential components of any high-performing HVAC system. We perform comprehensive airflow diagnostics to correct underlying issues that lead to inconsistent temperatures or elevated allergen levels in your space.
We offer:
- Duct Sealing and Redesigns to eliminate inefficiencies
- Whole-Home Humidifiers and Dehumidifiers
- Advanced Filtration Systems and UV Air Purifiers
- Zoned HVAC Systems for multi-area control
Whether it's stuffy bedrooms or dusty office corners, we restore healthy, balanced airflow throughout your property.
Schedule an indoor air quality assessment with our experts today.
Commercial HVAC Solutions Tailored for Mehlville Businesses
We understand the demands of keeping a commercial space functional and comfortable. That's why our commercial HVAC services are designed to minimize downtime, meet code compliance, and protect your investment.
Our commercial HVAC capabilities include:
- Rooftop and Packaged Units built for performance and reliability
- Smart Climate Controls for automated energy savings
- Routine Commercial Maintenance Plans with priority response
- Indoor Air Quality Enhancements to support a healthy work environment
- Energy Audits to identify cost-saving opportunities
Our team works discreetly and efficiently to support your business operations—without interruptions.
Keep your business running smoothly. Partner with us for dependable commercial HVAC service.
Why Do Homeowners in Mehlville Choose Hely Heating and Air Conditioning Co.?
Trust is earned through consistency, and that's exactly what Hely Heating and Air Conditioning Co. delivers. Our long-standing reputation in Mehlville is built on expert service, transparent communication, and attention to detail in every job.
Here's what distinguishes our team:
- NATE-Certified Technicians trained to solve problems quickly and accurately.
- Fully Licensed and Insured for residential and commercial HVAC work.
- Prompt and Respectful Service that prioritizes your time and home.
- Flexible Financing Options through top financial partners.
- Award-Winning Reputation backed by hundreds of 5-star reviews.
Choose an HVAC partner that Mehlville residents trust. Experience the difference with Hely Heating and Air Conditioning Co.
Expert Advice: Getting the Most Out of Your HVAC Investment
Maximizing HVAC performance isn't just about purchasing the best equipment—it's about how you maintain and operate it. Our experts recommend:
- Seasonal Maintenance before peak seasons to avoid last-minute emergencies
- Filter Changes Every 30–90 Days depending on your system and air quality
- Smart Thermostat Programming to reduce unnecessary energy use
- Monitoring System Age to anticipate when replacement will be more cost-effective than repair
HVAC systems aren't one-size-fits-all. Routine inspections, system balancing, and updated controls can significantly improve performance and extend system life. As your local HVAC authority, we're happy to provide guidance every step of the way.
Have questions about your HVAC system in Mehlville? Reach out to our team for personalized insights and professional support.
Your Local HVAC Contractor in Mehlville, MO: Ready When You Are
At Hely Heating and Air Conditioning Co., we don't just fix HVAC problems—we build long-term solutions and customer relationships. Whether you need installation, emergency repairs, or system upgrades, we're here to help you restore lasting comfort and energy efficiency.
Get started with a heating and air conditioning contractor in Mehlville, MO, that you can count on. Schedule your service today and experience the Hely difference—honest service, superior workmanship, and reliable comfort.
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Customer Testimonials
Building trust, one satisfied customer at a time. Read their stories.
Great experience! Would definitely recommend and will be using/referring in the future.
Wonderful service was here on short notice to help on a really hot day. I will be recommending and using for other properties.
Tim was efficient and knowledgeable. He explained everything he did and what the problems were. I would recommend them.
We have been using Hely for years. Professional, prompt and courteous service.
never have a need to call anyone else, they are the best, also refer a lot of people to them because they know how to treat people and get the job done with top quality service techs and office staff
Very helpful on installing my new thermostat. Assisted in set up too. We’ve used Hely for a very long time and will continue to do so. Have also had new furnace and A/C installed by Hely. Great staff
Amazing Service! They are great! Our AC went out after the 4th of July, and Tim came out that same day to repair our unit. He diagnosed the issue in less than 10 minutes, and had it fixed in less than 5. I am extremely grateful for their great service and quick resolution! I would highly recommend calling them!
Family has been using Hely for years. Always on time, polite, professional. Very responsive and they have an emergency line for when the weather is bad and you need help. Installed a new furnace and A/C for our new house within the last year and we're very happy.
They explained everything in terms that I could understand. The installers were very courteous & did a great job cleaning up. I highly recommend giving them a call.
They always come when called to service our heating & cooling system. Good prices, always fair and friendly service.
Never have a need to call anyone else, they are the best, also refer a lot of people to them because they know how to treat people and get the job done with top quality service techs and office staff
Korky has been working with our family for a long time. He is always so nice and efficient that we usually always hope to get him when we call you guys. He really cares for his customers and is always so professional. I’m really glad you have someone like korky on your team.
