Major Heating & Air Conditioning

When your furnace fails on a cold Denver night, you need a reliable expert who can get your heat back on fast. At Major Heating and Air Conditioning, our 24/7 emergency furnace repair service is your guarantee of warmth and safety. Our certified technicians arrive promptly, diagnose the issue with precision—whether it's a faulty ignitor, blower motor, or heat exchanger—and explain your options clearly before any work begins. We carry a comprehensive inventory of parts for all major brands, including high-efficiency Carrier systems, to complete most repairs in a single visit.

If your system is aging, inefficient, or requiring frequent repairs, our furnace installation service offers a permanent solution. We don't just swap units; we perform a detailed load calculation for your home to recommend the perfectly sized system for optimal efficiency and comfort. As an authorized Carrier dealer, we provide access to top-tier equipment with industry-leading warranties. Plus, with current rebates offering up to $2,100 back and 0% APR financing for 60 months (with approved credit), upgrading to reliable, energy-saving comfort has never been more affordable. Our process includes professional removal of your old unit, meticulous installation following all local codes, and a thorough system test to ensure everything operates flawlessly. We clean up after ourselves, leaving you with nothing but peace of mind and consistent, cozy warmth.

Embrace year-round, energy-efficient comfort with a heat pump or geothermal system from Major Heating and Air Conditioning. As Denver's experts in advanced climate technology, we help homeowners and businesses drastically reduce their carbon footprint and utility bills. A heat pump provides both heating and cooling from one unit, offering incredible efficiency, especially with the latest cold-climate models. For the ultimate in sustainable comfort, our geothermal design/build solutions tap into the earth's stable temperature to provide heating, cooling, and even hot water with unmatched efficiency.

Our process begins with a comprehensive consultation and site evaluation. For geothermal systems, our specialists handle everything from loop field design (horizontal trenches or vertical boreholes) to integrating the heat pump with your existing ductwork or radiant system. We are proficient with advanced technologies like the EnviroPlate™ and SHARC™ systems. The significant upfront investment is offset by substantial long-term savings and available incentives. We guide you through the 2025 XCEL rebates, which can provide up to $2,150 per ton for cold-climate air-source heat pumps and up to $3,300 per ton for ground-source systems. Our team manages the entire project—from permitting and excavation to installation and commissioning—ensuring a seamless transition to a cleaner, more cost-effective way to control your environment.

Your commercial facility's HVAC system is critical to operational continuity, employee productivity, and tenant satisfaction. Major Heating and Air Conditioning brings over 40 years of specialized commercial experience to businesses in Denver. We go beyond basic repair and maintenance with our Major Service System™, a customized approach that aligns HVAC performance with your specific business goals, whether you manage an office building, retail space, or industrial facility.

Our commercial services are comprehensive. We provide expert boiler repair and maintenance to keep your essential heating and process systems running reliably. Our building automation and controls specialists can integrate and optimize your HVAC, lighting, and refrigeration systems for peak efficiency and centralized management. We offer forensic evaluations to diagnose chronic comfort issues or system failures, providing clear, actionable reports. For new construction or major retrofits, our design/build team delivers turnkey solutions, handling everything from initial concept and energy modeling to installation and ongoing support. We also specialize in commercial refrigeration systems to protect your inventory. With flexible commercial financing options, we can help you modernize your infrastructure with manageable payments, reducing operational costs and enhancing your building's value from day one.

The air you breathe indoors directly impacts health, comfort, and well-being. At Major Heating and Air Conditioning, we provide solutions that go beyond temperature control to improve your indoor environment. Our indoor air quality services address common issues like dust, allergens, viruses, humidity imbalances, and stale air. We assess your home or business and recommend targeted solutions such as advanced air purification systems, UV-C germicidal lights, energy recovery ventilators (ERVs) for fresh air exchange, and whole-home humidifiers or dehumidifiers.

The best way to ensure clean air and system reliability is through proactive care. Our Customized Maintenance Plans are designed to prevent costly breakdowns, maintain peak efficiency, and extend the lifespan of your equipment. Unlike one-size-fits-all approaches, we tailor a plan based on your specific system, usage patterns, and comfort goals. A typical plan includes semi-annual tune-ups (spring for cooling, fall for heating), priority scheduling, discounts on repairs and parts, and thorough system inspections. This regular attention allows our technicians to spot minor issues—like a worn capacitor or a slight refrigerant leak—before they escalate into major, expensive failures. For homeowners and property managers alike, our maintenance plans offer predictable budgeting, enhanced comfort, and the confidence that your HVAC system is in expert hands all year long.