Expert HVAC Solutions

Reliable installation, repair, and maintenance for residential and light commercial properties. Service you can count on.

Trusted HVAC Installation and Repair Experts Serving Lancaster, TX

For over four decades, Allenaire Service Co. has been the name homeowners and small businesses in Lancaster, TX, have trusted for dependable HVAC installation and repair services. When your home or building becomes uncomfortable, you deserve a team that responds quickly, diagnoses the issue accurately, and treats your property with care. That is exactly what Allenaire Service Co. has been doing since 1985—providing honest, skilled, and affordable heating and cooling solutions supported by a commitment to integrity and small-town service.


Whether your air conditioning system is failing during a Texas summer or your heating system needs replacement before a cold front, our licensed technicians bring real expertise to every job. With a long-standing reputation for quality work and a deep connection to the communities we serve, we make it easy to get the HVAC help you need—when you need it most.

HVAC technician in orange safety vest and hard hat working on rooftop unit, two colleagues in background.

Mission Statement

Allenaire Service Co. strives to serve the communities of Lancaster, Texas, Southern Dallas County, and Northern Ellis County with quality air conditioning, heating, and ventilation installation and repair services available.


We work hard to remain competitive in pricing while still delivering the quality, professionalism, and dependability our customers deserve.

About Allenaire Service Co.

Founded in 1985 by Stephen Allen, Allenaire Service Co. began with a simple belief: excellent HVAC service should always be accessible, honest, and trustworthy. Stephen brought his mechanical engineering degree from Texas A&M, his HVAC training through Cedar Valley Community College, and years of instructional experience to create a company built on true expertise.

Over the years, Allenaire Service Co. has grown into one of the most reliable HVAC providers in Lancaster, TX, and the surrounding areas. Fully licensed, insured, and EPA-certified, Stephen and his team continue to approach every installation and repair with the diligence and professionalism that have defined the business from day one.

Today, the company remains locally owned and deeply rooted in the community. Many customers have trusted us for years, relying on the same honest guidance and thorough craftsmanship that have shaped our reputation across Southern Dallas County and Northern Ellis County.

HVAC Services We Provide

We specialize in HVAC installation and repair services for both residential properties and small commercial buildings. While many companies offer broad service lists, we focus on what we do best—helping customers restore comfort quickly and affordably.

Our Core Services Include:

  • Air conditioning installation
  • Air conditioning repair
  • Heating system installation
  • Heating system repair
  • Ventilation and ductwork services
  • Light commercial HVAC solutions for small businesses
  • Diagnostics and system evaluations
  • Complete system replacement

Why Choose Allenaire Service Co.

Choosing an HVAC company is ultimately about trust—trust that the team entering your home or business will be knowledgeable, respectful, and transparent. With Allenaire Service Co., that trust is earned from the first call to the final check of your system.

Decades of Experience You Can Count On

Since 1985, we have served thousands of homeowners and small businesses with reliable heating and cooling solutions. Our history and longevity reflect our commitment to quality.

Licensed, Insured, and Certified

Stephen P. Allen, the owner of Allenaire Service Company, is licensed by the state of Texas and is fully insured.  All technicians are registered with the state of Texas and are EPA-certified. All technicians receive ongoing training and are covered by workers' compensation insurance.

Locally Owned and Community Driven

As a small, family-focused business based in Lancaster, TX, we understand the needs of local customers and take pride in serving our neighbors.

Honest, Upfront Guidance

We evaluate every system thoroughly and explain your options clearly—no upselling, no surprises.

Responsive Service

Texas weather can be unpredictable, and HVAC issues rarely wait for convenient times. Our team responds quickly so you can restore comfort with minimal disruption.

Our Simple and Professional Process

Step 1: Schedule Your Visit

Call 972-227-8506 to book your appointment. Our team listens carefully to your needs and sets a convenient time.

Step 2: On-Site Evaluation

A trained technician arrives promptly, inspects your system, and provides a clear explanation of what needs to be done.

Step 3: Repair or Installation Work

We complete your installation or repair with precision, using high-quality equipment and industry best practices.

Step 4: Testing and Confirmation

Before we leave, we thoroughly test your system to ensure everything is functioning correctly.

Step 5: Continued Support

If you have questions or concerns afterward, our team is always available to help.

Proudly Serving Southern Dallas County and Northern Ellis County

We provide HVAC installation and repair services in:


Lancaster, DeSoto, Hutchins, Wilmer, Glenn Heights, Red Oak, Oak Leaf, Cedar Hill, Duncanville, Ferris, Balch Springs, Mesquite, Dallas, Waxahachie, Ovilla, and surrounding communities.

Frequently Asked Questions

  • How quickly can Allenaire Service Co. come out for an HVAC issue?

    We offer fast scheduling and prompt service to help restore comfort as quickly as possible.

  • Do you work with both residential and light commercial properties?

    Yes. We serve homeowners and small commercial businesses throughout Lancaster, TX, and nearby communities.

  • What brands do you work with?

    We install and repair most major HVAC brands and are an American Standard Dealer.

⭐⭐⭐⭐⭐

Phillip did a great job we have had this leak for years and he fixed it for a great price too ! Definitely recommend this company.


Destyni J.

⭐⭐⭐⭐⭐

Zac came to Midlothian to fix our 28 year old A/C, which hadn't run in 2-4 years. Only had to replace one part, done in under an hour. Was very courteous and helpful. Would use them again in a heartbeat!


Adrianne R.

⭐⭐⭐⭐⭐

I used them last year and was extremely satisfied. I've had other companies service and add freon but this was the first time I felt a significant improvement afterwards.


GV G.

Need help now? Call Allenaire Service Co. at 972-227-8506 to schedule your HVAC installation or repair service.