Unreliable heating or air conditioning can disrupt your comfort, increase energy bills, and cause unnecessary stress. At Hely Heating and Air Conditioning Co, we provide expert HVAC services in Overland, MO, delivering prompt, precise solutions backed by decades of experience. Whether you need emergency repairs, routine maintenance, or full system upgrades, our licensed professionals are here to help you maintain year-round comfort with reliability and efficiency.
.avif)
Why Homeowners in Overland Choose Our HVAC Services
Our technicians are not just certified—they're extensively trained to stay ahead of the curve. Each team member undergoes regular technical training and safety workshops to master the latest HVAC tools, technologies, and code requirements. Whether it's diagnosing a faulty compressor or configuring a multi-zone system, we ensure accuracy and long-term performance from the start.
As one of the preferred heating and air conditioning contractors in Overland, MO, we bring expertise, safety, and professionalism to every visit.
.avif)
Emergency HVAC Support – Always On Standby
HVAC failures can happen at the most inconvenient times—during a heatwave or a freezing night. Our 24/7 emergency service ensures you're never left without support. From rapid diagnostics to on-the-spot repairs, we prioritize speed without sacrificing quality. Our fully stocked service vehicles allow us to address most issues on the first visit.
When comfort can't wait, count on our emergency HVAC services.
Personalized Solutions for Homes & Businesses
We recognize that heating and cooling requirements vary across homes, office spaces, and commercial buildings. That's why we offer customized HVAC solutions—no one-size-fits-all systems. From small residential units to complex rooftop commercial systems, we assess your structure, usage, and comfort goals before proposing a plan.
- Zoned HVAC system design
- Load calculations for proper sizing
- Energy-efficient product recommendations
- Code-compliant system upgrades
Get tailored HVAC service in Overland, MO, that fits your space—not just a standard package.
Expert HVAC Installation Services
Whether you're installing a new furnace or upgrading to an energy-efficient mini-split, our team ensures seamless system integration. We work with industry-trusted brands like Goodman and Daikin to provide lasting value and performance.
Our installation process includes:
- In-depth system consultation and home assessment
- Professional sizing based on square footage and usage
- Safe and code-compliant setup with post-installation testing
- Clear walkthroughs for operation and maintenance tips
For precise HVAC installation in Overland, MO, partner with technicians who focus on quality from start to finish.
Comprehensive Maintenance and Repairs to Extend System Life
Routine service isn't just a recommendation—it's a critical part of keeping your HVAC system efficient and reliable. Our maintenance services cover seasonal tune-ups, safety checks, and component inspections. We catch problems early, helping you avoid breakdowns during peak summer or winter months.
When issues do arise, our repair process includes:
- Fast, transparent diagnostics
- Use of genuine replacement parts
- Upfront pricing with no surprise charges
- Respectful service that protects your time and home
Book HVAC maintenance or repair and reduce unexpected costs while improving system efficiency.
Healthier Air Starts with Better Indoor Air Quality
Indoor air often contains more pollutants than the air outside. Allergens, bacteria, and moisture issues can compromise your health. We offer indoor air quality solutions designed to purify, balance, and refresh the air you breathe.
Our IAQ services include:
- Whole-home air purifiers and filters
- UV lights to neutralize airborne pathogens
- Humidifier/dehumidifier installation for balanced air
- Duct inspection, cleaning, and sealing
Improve your indoor air with Overland's trusted HVAC contractor focused on air quality. Call us today!
A Legacy of Service Built on Integrity Since 1969
Founded by Richard Hely and family-owned ever since, Hely Heating and Air Conditioning Co. has grown with Missouri's communities by offering honest advice, reliable service, and results that last. Rich Hely continues to remain hands-on, ensuring that our original values guide every job.
What sets us apart:
- Over 50 years of local experience
- 5-star rating with 300+ verified customer reviews
- Technicians who care about doing it right—not just getting it done
Our longevity is no accident. It's built on service you can trust—generation after generation.
Get Started Today with Overland's Leading HVAC Specialists
When comfort matters, every detail counts. From prompt service calls to custom HVAC installations, Hely Heating and Air Conditioning Co. is here to make your home or business in Overland, MO more comfortable, efficient, and worry-free. Our experts are ready to help—whether you need seasonal maintenance, an urgent repair, or a new system designed for your space.
Ready to experience unmatched HVAC service in Overland?
Contact us today to schedule your appointment or learn more about our services. For those considering a new system but unsure about budget, visit our HVAC Financing Options page to explore simple, flexible payment plans.
Frequently Asked Questions (FAQs)
What is the best time of year to schedule HVAC maintenance in Overland, MO?
The best times are early spring for cooling systems and early fall for heating systems. This ensures your system is optimized before seasonal demand increases.
How do I know if my HVAC system needs to be replaced or just repaired?
If your system is over 12–15 years old, needs frequent repairs, or your energy bills have spiked, it may be more cost-effective to replace it. We offer professional assessments to help you make the right decision.
Do HVAC companies in Overland, MO, offer air quality testing?
Yes, reputable HVAC contractors like Hely Heating and Air Conditioning Co. provide indoor air quality evaluations and offer solutions like filtration systems, UV lights, and duct cleaning for healthier indoor environments.
.avif){kind=logo}
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.
