Expert heating and cooling system maintenance, repair, and installation. Professional technicians, transparent pricing, and reliable solutions for residential and light commercial properties throughout Southwest Oklahoma.
From routine maintenance to emergency repairs, we handle all aspects of residential and commercial HVAC systems with precision and care.
Complete air conditioning system diagnostics, repair, and preventive maintenance. We service all major brands and keep your cooling system running efficiently through Oklahoma's hot summers.
Furnace and heat pump inspection, repair, and installation. Ensure your heating system is ready for winter with our thorough checkups and quality repairs using genuine parts.
Professional HVAC installation for new construction and replacements. We help you select the right system for your space and budget, with expert installation and calibration.
Complete duct inspection, cleaning, and repair services. Improve air quality and system efficiency with our professional ductwork solutions tailored to your specific needs.
Air purifiers, humidifiers, and ventilation solutions for healthier indoor environments. We assess your air quality and recommend appropriate filtration and purification systems.
24/7 emergency heating and cooling repairs. When your system fails unexpectedly, our rapid response team is ready to restore your comfort promptly.
We're not just another HVAC company. Here's what sets us apart and keeps customers coming back year after year.
Our team consists of EPA-certified professionals with extensive training in all major HVAC systems and brands.
We prioritize urgent requests and offer same-day appointments for repairs that can't wait.
No hidden fees or surprise charges. We provide detailed estimates before starting any work.
All our work is backed by a comprehensive warranty on both parts and labor for your peace of mind.
Real feedback from real customers in Duncan and surrounding areas.
"When our furnace stopped working on the coldest night of the year, Simms had a technician to our house within two hours. They fixed the issue quickly and professionally. Very grateful for their emergency service!"
"We've used Simms for our annual AC maintenance for three years now. Always on time, professional, and they explain everything clearly. Our system has never run better. Highly recommend!"
"Great experience from start to finish. They helped us choose an energy-efficient heat pump for our home and installed it perfectly. Already seeing lower utility bills. The team was friendly and left everything clean."
Whether you need routine maintenance, urgent repairs, or a complete system replacement, our certified technicians are ready to help.
Have questions or need a quote? Reach out to our team today.