Hely Heating and Air Conditioning Co.

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Hely Heating and Air Conditioning Co. operates from Fenton, Missouri, delivering heating and cooling solutions to homeowners and businesses across St. Louis and Jefferson Counties. The company holds a 4.7-star average rating derived from 42 verified customer reviews. Their service footprint includes Fenton, Ballwin, Chesterfield, Kirkwood, St. Louis, and numerous surrounding communities, allowing them to respond quickly to service calls throughout the metro area. The business has operated continuously since 1969, establishing deep roots in the regional HVAC industry.
The company differentiates itself through strategic manufacturer partnerships that extend beyond basic equipment supply. Their current promotions feature Daikin ductless split systems at reduced pricing, alongside a 5-year labor warranty on Goodman equipment installations, a meaningful commitment given that many competitors warrant only the compressor or limit coverage to one year. A federal tax credit reaching $600 remains available for qualifying system upgrades, and their maintenance agreement program provides annual tune-ups, priority scheduling, and discounted repair rates for $200 per year. This combination of brand specialization and ongoingcustomer support structures sets them apart from operators who focus solely on one-time installations.
Customer testimonials reveal consistent patterns in service delivery. Technician Tim earned specific praise for teaching a first-time homeowner about preventive maintenance and for identifying mismatched system components from a previous sale, including fabricating a custom cabinet to protect the furnace from debris. Another reviewer documented how the team reshuffled their schedule to accommodate a family with a newborn, recognizing the urgency of restoring climate control in a household with an infant. These specific scenarios demonstrate how the company tailors responsiveness to customer circumstances rather than applying uniform service protocols.
What Customers Say
Forty-two reviews yield a 4.7-star average with zero ratings below 3 stars. Repeat-service language appears across multiple testimonials, indicating customer loyalty. Emergency and scheduling-accommodation themes dominate positive feedback, with one reviewer citing same-day response during a heat wave and another noting schedule flexibility for urgent situations.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
Air Conditioning Repair & Replacement
Complete AC services including diagnostics, refrigerant handling, component repair, and full system replacement with new equipment installations.
Heating & Furnace Services
Furnace repair, replacement, installation, and annual tune-up packages ensuring safe operation before heating season begins.
Heat Pump Systems
Dual-function heating and cooling systems using electricity as the primary energy source for year-round climate control.
Boiler Heating Systems
Gas boiler services starting at 80% AFUE efficiency, serving homes with hot water radiator heating configurations.
Ductless Mini-Split Installation
Zone-based heating and cooling for individual rooms, additions, or homes without existing duct infrastructure.
Indoor Air Quality Solutions
Whole-house purifiers targeting indoor pollutants and humidifiers managing moisture levels for improved breathing air.
Commercial HVAC Systems
Light commercial and industrial heating and cooling applications for businesses and non-residential properties.
Preventive Maintenance Agreements
Annual service contracts covering seasonal tune-ups, priority scheduling, and reduced rates on emergency repairs.