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Welcome to Sinclair Air Systems, your go-to HVAC contractor for dependable, quality service. With a team of seasoned professionals, we specialize in installing, maintaining, and repairing heating, ventilation, and air conditioning systems across the region.

Here, you’ll find helpful tips on maintaining your HVAC system, the latest industry trends, and how-to guides tailored for homeowners. Whether you’re looking to learn more about energy-saving practices or need guidance on selecting the right system for your property, our blog is your one-stop resource. Sinclair Air Systems is more than just an HVAC contractor – we are a partner you can trust. 

Our team is dedicated to excellence, and our customer-first approach ensures a personalized, satisfying experience every time. For all things HVAC, look no further than Sinclair Air Systems, the HVAC contractor you can count on.

If your ready to get started email us for a free quote or call us today!

frozen refrigeration lines next to condensing coils

Refrigeration Coils Matter

Are you sweating over high energy bills or an AC that just doesn’t cut it? The secret to a cooler, more efficient home could be hiding right outside—in your AC’s condenser coils. Dive into our latest blog to find out why these coils are your HVAC system’s unsung heroes, and how easy maintenance could save you money and headaches

Ac install by sinclair air systems

The Lifesaver in Our Homes: HVAC Equipment

Feeling the heat? Discover AC install options that offer not just cool air but also significant energy savings. Dive in to find your perfect fit for a comfortable, cost-effective summer

Condenser unit being installed in the backyard of a Sinclair Air Systems customer's home in Covina, illustrating our high-quality AC installation services

Guide to Understanding AC Systems, Installation, and Types

Explore the latest cooling solutions, learn about installation, and discover how Sinclair Air Systems can make your home or office a comfort oasis. Stay cool, informed, and in control – your journey to ultimate comfort starts here!

Image of a rooftop condenser unit, a key component in HVAC systems, installed on top of a commercial building against a clear sky. The metal casing and cooling fans are visible, symbolizing the essential process of heat exchange in air conditioning.

How Does AC Work?​

From the refrigerant’s magic to the engineered movement of air through ductwork, the process of air conditioning is a marvel that keeps us comfortable year round. If you’re in need of quality air conditioning services in Covina or the surrounding areas, our comprehensive guide offers insights and our expert team is here to keep you cool.

package unit roof installation in Covina

Air Conditioner Installation Tips

As temperatures soar and summer sets in, the importance of a well-functioning air conditioning system becomes paramount. In this comprehensive guide, we’ll delve into essential tips and best practices for a seamless and effective AC installation.

When is it time for service?

The temperature had soared, leaving no room for discomfort in the sweltering heat. Among them, a curious question buzzed in the minds of homeowners and businesses alike: When is it time for service? At the heart of the community stood Sinclair Air, a reputable and trusted name in HVAC services.

Seer Rating is changing next year!

While specific details surrounding the new SEER rating methodology remain under wraps, speculations abound that it will incorporate a holistic approach, considering various factors such as real-world energy consumption, the integration of renewable energy sources, and the reduction of greenhouse gas emissions.

The Advantages of Split System HVAC Units

In the quest for comfortable indoor environments, HVAC systems play a pivotal role, and among the leading innovations in this domain are split system HVAC units. Sinclair Air, a renowned authority in the HVAC industry, explores the numerous benefits of these cutting-edge systems in their latest article.

Save money, time and effort when choosing an HVAC repair specialist

When your HVAC system starts acting up, finding a reliable and efficient repair specialist becomes paramount to ensure your home’s comfort and well-being. However, the overwhelming number of options available in the market can leave you puzzled and struggling to make the right decision.

HVAC System

Why Spring is the Best Time to Replace Your HVAC System

As winter bids its farewell and nature awakens to the warm embrace of spring, homeowners everywhere are gearing up for seasonal changes. Among the most crucial preparations for a comfortable and energy-efficient living space is considering the state of their HVAC system.

What’s the Value of Regular Maintenance?

As the scorching summer heat settles in, homeowners and businesses alike turn to their trusty air conditioning systems for solace. Amidst the rising temperatures, Sinclair Air, a renowned name in the HVAC industry, emphasizes the crucial value of regular maintenance to ensure these cooling systems perform at their peak efficiency.