5050 Quorum Dr Suite 700, Dallas, TX 75254 
Open 24 Hours 
Many Lewisville homes and townhomes have compact heating equipment in a closet or attic. When the heat stops, a few checks can tell you whether it’s simple, and whether you need to leave first.
Heat out in Lewisville? Try these first
- Is it electric? Many townhomes and apartments heat with an electric furnace or heat pump. Check the breaker for the heat strips.
- Thermostat. Heat mode and setpoint.
- Filter. Swap it if it’s dirty.
- Power. If the whole house is dark, report the outage to your electric delivery company (it’s on your bill) before you call an HVAC company. Some systems wait before restarting after power returns, so give it a little time.
- Gas smell. If you smell gas, leave the house first, then call 911 and your gas utility from outside. Don’t touch the thermostat or light switches on the way out.
Still cold? Call 972-423-0012 any hour.
Heating repairs Lewisville homes need most
- Heat pump defrost and reversing valve problems.
- Gas furnace igniters and flame sensors.
- Blower motors.
- Limit switches tripped by poor airflow.
- Electric heat strips and sequencers.
Read heat pump vs. furnace, furnace short cycling and how to prepare for winter.
Lewisville homes and what their age means for your system
Lewisville’s housing is spread evenly across five decades, with the 1990s the largest. The Census puts the median home at 1997, and fewer than half of Lewisville’s homes are single-family detached houses, so many of our calls are townhomes and apartments with compact equipment.
The Census counts about 54,237 homes in Lewisville. Here’s how they break down by decade built:
| Built | Share of homes | What we often find |
|---|---|---|
| Before 1980 | About 14% | The older neighborhoods near Old Town. Ducts and equipment have usually been reworked over the years. |
| 1980s | About 19% | About 40 years old. Many are on their second or third outdoor unit. |
| 1990s | About 24% | Lewisville’s biggest decade. Second systems from the 2000s often ran on R-22. |
| 2000s | About 20% | Original systems are 15 to 25 years old. |
| 2010 and later | About 23% | Newer homes, apartments and townhomes, mostly on R-410A or newer refrigerants. |
The house’s age doesn’t tell you the system’s age. The data plate on the outdoor unit does, and it’s the first thing we read.
In townhomes and apartments, the air handler is often in a small closet and the condenser on a pad or roof shared with neighbors. Access and clearances matter more there, and a replacement has to fit the existing space.
Lewisville permits for HVAC work
- Contractors must be registered with the City to pull a permit, which means they submit and keep up all required licenses and insurance.
- A homeowner may pull a permit and do mechanical work on a homesteaded primary residence. The City says a homeowner’s permit should not be pulled if a contractor will be hired, and that you should never apply for a permit for your contractor.
- Questions: Building Services, 972-219-3470.
- The City of Lewisville lists heating and air conditioning work among projects that need a building permit. Mechanical work is applied for through the City’s MGO Connect portal using the Mechanical Application.
Dallas Heating and Air Conditioning is registered with the City of Lewisville as a mechanical contractor. For a replacement, we pull the permit and schedule the inspection.
In a homesteaded primary residence, Lewisville lets a homeowner do their own mechanical work under their own permit. But the City says not to pull a homeowner’s permit if you’re hiring a contractor; the registered contractor should pull it.
Refrigerant and efficiency rules that affect your decision
R-22. The EPA ended the manufacture of new R-22 equipment in 2010 and the production and import of R-22 itself on January 1, 2020. An R-22 system can keep running, but it can only be recharged with recovered or reclaimed R-22. A large leak on an R-22 unit is often the point where replacement makes more sense than repair.
SEER2. Since January 1, 2023, Department of Energy rules require new split-system central air conditioners installed in the Southeast region, which includes Texas, to meet at least 14.3 SEER2 under 45,000 Btu/h and 13.8 SEER2 at 45,000 Btu/h and up. New split heat pumps nationwide must meet 14.3 SEER2. See SEER vs. SEER2.
Heat pumps. A heat pump is also your air conditioner, so the same rules apply, and a failed heat pump can take out heating and cooling at once. See heat pump repair.
How a Lewisville repair visit works
- You call. We answer 24/7.
- Safety first. On a gas furnace, we check venting, the flame and the gas connection before anything else.
- Diagnosis. A NATE-certified technician tests ignition, safeties, controls and airflow.
- Written price. Upfront written pricing before any work starts.
- Repair and test. We run a full heating cycle and confirm the safeties work.
Call right away if
- A carbon monoxide alarm: get everyone outside and call 911
- A furnace that makes a loud bang when it lights
- No heat in freezing weather, especially with vulnerable people in the house
- Any smell of gas: leave first, then call
Upfront written pricing before any work starts
No heating repair starts until you’ve approved a written price. It includes:
- Safety problems such as a cracked flue or a gas connection that isn’t right are listed on their own line.
- If the furnace or heat pump is near the end of its life, we show repair and replacement side by side.
- Financing available.
- What the written price covers: the diagnosis, the repair and any safety items we find.
Why homeowners call us
- 24/7 service
- Upfront written pricing before any work starts
- Financing available
- Registered with the City of Lewisville as a mechanical contractor
- All major brands, including Carrier, Trane, Lennox, Rheem, American Standard, York, Daikin, Mitsubishi, Fujitsu, Amana, Bryant and Goodman
- NATE-certified technicians
More for Lewisville: HVAC service in Lewisville, AC repair in Lewisville, AC installation in Lewisville. See also furnace repair and heating service and HVAC maintenance and tune-ups.
Also nearby: heating repair in Carrollton, heating repair in Flower Mound.
Call 972-423-0012, open 24 hours.
