
With over 25 years of experience establishing ourselves as the go-to HVAC service, we bring that expertise to every project we undertake. From large heating system installations to quick repair work that keeps things running smoothly, we do it all. By calling us, you have not once more contracted a temporary service but rather a dedicated team that believes in your success.
Heating emergencies rarely make it to your calendar. With your time being more valuable than ever, we will be available day or night to address your greatest needs. Our teams arrive promptly with all schemas in place and ensure your systems work again with no guesswork or unnecessary delay, just timely service, courteous and respectful of your time.
We do not just dispatch anyone to your property. Our technicians are some of the most skilled men and women in the commercial heating business. They always come prepared to fix even the trickiest heating issue-whether it be a rooftop unit, warehouse heating system, or a multi-zone office configuration-quickly and efficiently by troubleshooting, repairing, or installing it step by step.
At DT Air Conditioning & Heating, we have 25 years of experience behind us. That enables us to provide confident work with businesses of different sizes within Allen and the surrounding areas. Our recommendation is based on what is right for your space, not on upselling things. You do not need energy efficiency upgrades to a unique system design.


All commercial spaces differ, so our services are always tailored to the heating systems that serve your special building size, layout, and daily usage. Our commercial heating solutions in Allen, TX, entail:
Every business environment has unique heating demands, which is why we don't believe in a one-size-fits-all approach. Whether your large warehouse needs heating or your storefront should be warm enough for customers, we listen to your concerns, assess your building's layout, and recommend the arrangement that works best for your budget and energy goals.
Communication is key with us. You'll never wonder what we're doing, why we're doing it, and how what we're doing helps your system. With no hidden costs and no technical mumbo jumbo, just honest advice and high-quality workmanship.
A well-maintained AC system doesn’t have to work as hard to cool your home. Clean coils, proper airflow, and correctly calibrated components help reduce energy consumption.
Benefits include:
Competitor resources consistently note that neglected systems without proper AC maintenance often lose efficiency long before they fail completely.
Many AC failures don’t happen suddenly—they develop over time. Maintenance allows technicians to identify worn parts, loose connections, or airflow problems before they cause system shutdowns.
Preventive maintenance helps:
Air conditioners are major investments. Regular maintenance helps protect that investment by reducing wear and tear on critical components.
Routine service can:
In many cases, maintenance can add years to the usable life of an AC system.
Maintenance isn’t just about the equipment—it’s about how your home feels. A tuned system delivers better airflow and more consistent temperatures.
Homeowners often notice:
For homes with airflow challenges, duct-related services may also help.
During maintenance, filters and internal components are checked for dust and buildup that can affect air quality.
Regular service supports:
This is especially important for households with allergies or respiratory sensitivities.
Skipping maintenance doesn’t usually cause immediate failure—but it often leads to gradual performance decline and higher costs over time.
Common consequences include:
Many emergency service calls we receive in Plano could have been prevented with routine maintenance.
Most manufacturers and HVAC professionals recommend professional AC maintenance at least once per year—ideally before peak cooling season.
Some situations may justify additional maintenance:
Our team can help determine the right schedule for your specific system.
Understanding the distinction helps homeowners plan effectively.
AC Maintenance:
AC Repair:
Maintenance reduces the likelihood of needing repairs, but repairs may still be necessary as systems age.
Even if your system is still running, these signs suggest maintenance is overdue:
If these symptoms sound familiar, scheduling maintenance now can help restore performance.
Yes. Annual maintenance helps keep your system efficient, reliable, and operating within manufacturer guidelines, especially in Plano’s demanding climate.
Maintenance can’t prevent all repairs, but it significantly reduces the risk of major breakdowns by catching small issues early.
A clean, well-adjusted system operates more efficiently, which often results in lower energy usage and reduced utility costs.
Over time, neglected systems lose efficiency, require more repairs, and tend to fail earlier than well-maintained units.
Basic tasks like filter changes are helpful, but professional maintenance includes inspections and adjustments that homeowners can’t safely or effectively perform on their own.
We approach maintenance as more than a checklist. Our technicians focus on system health, performance, and long-term reliability—while clearly explaining what we find and why it matters.
When you choose DT Air Conditioning & Heating, you get:
We’re committed to helping homeowners stay comfortable and avoid unnecessary surprises.