When it comes to heating and cooling in Castle Rock, CO, Northwind Heating & Air provides dependable, high-quality service you can count on all year long. Whether your furnace gives out in the middle of a cold Douglas County winter or your AC struggles during the summer heat, our certified HVAC technicians are ready to help with fast, friendly, and professional service.

We proudly serve homeowners in Castle Rock with a full range of HVAC services, including repairs, installations, replacements, and routine maintenance. With over 25 years of experience and a strong commitment to transparent pricing, you’ll always know exactly what to expect when you work with Northwind.

HVAC Services We Offer in Castle Rock:

Furnace Repair & Installation

Restore comfort fast with expert furnace repair, or upgrade to a more energy-efficient system professionally installed by our experienced team.

Air Conditioner Repair & Replacement

Stay cool during Castle Rock’s sunny, dry summers. We repair all major AC brands and install high-efficiency air conditioning units to help you save on energy costs.

HVAC Maintenance

Protect your system with seasonal tune-ups designed to improve performance, extend equipment life, and reduce utility bills.

Thermostat Repair & Replacement

From simple repairs to smart thermostat upgrades, we help you take full control of your home’s temperature and comfort.

Indoor Air Quality (IAQ) Solutions

Enhance your indoor air with whole-home humidifiers, purifiers, and other IAQ products tailored to Castle Rock’s dry climate.

Air Duct & Dryer Vent Cleaning

Improve airflow and reduce dust and allergens with comprehensive duct and dryer vent cleaning services for your Castle Rock home.

Why Castle Rock Homeowners Choose Northwind:

• Certified HVAC Technicians
• Honest, Upfront Pricing
• Respectful of Your Home
• Fast Response Times
• Trusted by Families Throughout Douglas County and the Front Range