Heritage Heating & Cooling

03/05/2026

As a veteran-owned and family-operated business, we leverage nearly 15 years of experience to professionally integrate advanced air filtration solutions with your existing O'Fallon HVAC setup, guaranteeing superior indoor air quality and peace of mind. Visit https://www.heritage-service.com/s/i2x9i6b

03/02/2026

Ditch the leaky ducts and gain zoned comfort! As a veteran-owned O'Fallon business, we specialize in high-efficiency ductless mini-split systems that eliminate the 30% energy loss of traditional ductwork, saving you money all year long.

Ductless HVAC benefits!

02/27/2026

Q: How can I tell if I need to replace my HVAC system? A: If your system is producing insufficient heating or cooling, has frequent breakdowns, or is over 10-15 years old, it may be time to replace it. Visit https://www.heritage-service.com/s/B4f6b5u

02/24/2026

Trust our licensed and insured team, continually educated on the latest trends since 2011, to deliver cutting-edge central and ductless HVAC installations that perfectly fit your Metro East, South St. Louis, or Jefferson County home for unmatched efficiency. Visit https://www.heritage-service.com/s/F4s7E7d

02/20/2026

We live by the motto, "We're not comfortable unless you are," offering exceptional service, excellent warranties, and 0% financing for up to 60 months on new equipment to all O'Fallon and Edwardsville customers. Visit https://www.heritage-service.com/s/H7j9Y2a

02/17/2026

As a local veteran-owned HVAC company with nearly 15 years of experience, we stand by our work and offer a one-year labor and parts warranty on all furnace and heat pump repairs, ensuring your comfort through even the coldest O'Fallon winters. Visit https://www.heritage-service.com/s/p4O736N

02/13/2026

: What do air filters do in an HVAC system? A: Air filters remove contaminants from the air, keeping indoor air clean and healthy while protecting the HVAC system from damage. Visit https://www.heritage-service.com/s/l7E891U

02/10/2026

At Heritage Heating & Cooling, we consider it a privilege to help incredible people like you! We take great pride in providing the highest quality service. Thank you for trusting us to be a part of your story, Scott! Visit https://www.heritage-service.com/s/d6R5K2z

02/05/2026

Our team of experts can provide comprehensive heater maintenance services to keep your system running at peak performance. Visit https://www.heritage-service.com/s/t5M3s4X

02/02/2026

Before you call for emergency service, read our guide on how to quickly fix the most common causes of low heat in your home.

Simple HVAC fixes and when to call the experts for furnace and heat pump repair.

01/30/2026

: Is your energy bill suddenly higher than normal? It could be a sign that your HVAC system is not working efficiently and needs repairs. Visit https://www.heritage-service.com/s/a4S5H7h

01/27/2026

Trust the experts at Heritage Heating & Cooling to diagnose and repair any problems with your heater. Visit https://www.heritage-service.com/s/N0P6b6i