5050 Quorum Dr Suite 700, Dallas, TX 75254 
Open 24 Hours 
In a large Flower Mound home with two or three systems, a heating problem usually starts in one of them. Here’s what to check, what to do first if you smell gas, and how the Town’s rules apply.
Flower Mound heating: what to check first
- 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.
- Which system? Find the thermostat for the cold area.
- Furnace switch and the furnace door panel.
- Filter for that system.
- 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.
Still cold? Call 972-423-0012, 24/7.
Heating repairs we see in Flower Mound
- Furnace igniters and flame sensors.
- Zoning controls and dampers.
- Inducer motors and pressure switches.
- Heat pump defrost problems.
- Blower motors.
Read heat pump vs. furnace, furnace short cycling and how to prepare for winter.
Flower Mound homes and what their age means for your system
Flower Mound is a town of large single-family homes: about 87% are detached houses, and the Census puts the median home at 1998. Nearly 4 in 10 were built in the 1990s alone.
The Census counts about 30,111 homes in Flower Mound. Here’s how they break down by decade built:
| Built | Share of homes | What we often find |
|---|---|---|
| 1990s | About 38% | Flower Mound’s biggest decade by far. These homes are about 30 years old, and most are on their second system. |
| All other decades | About 62% | Older homes from before 1990 and newer ones built since 2000, each with its own mix of equipment ages. |
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.
Large Flower Mound homes often have two or more systems, plus long duct runs in the attic. When one area of the house is uncomfortable, it’s usually one system or one duct branch, and we test each one separately. Because the Town publishes its list of registered contractors online, you can check any HVAC company before you hire it. Ask for the permit too: the Town requires one for installing heating and air conditioning units and for new or relocated duct work.
Flower Mound permits for HVAC work
- The Town of Flower Mound requires a permit for mechanical work such as installing heating and air conditioning units and relocating or installing duct work. The Town’s fee schedule lists an HVAC Replacement permit.
- Contractors doing that work must be licensed by the State of Texas and registered with the Town. The Town publishes an online list of registered contractors, and registrations expire one year from the application date.
- Work that needs a permit but is done outside business hours for an emergency must be submitted for a permit the next business day.
- Building Inspections: 972-874-6355.
Dallas Heating and Air Conditioning is registered with the Town of Flower Mound as a mechanical contractor. For a replacement, we pull the permit and schedule the inspection.
Many Flower Mound homes have zoning, where dampers in the ducts send air to different parts of the house. A stuck damper can make one zone cold while the furnace runs fine, so we check the zoning before replacing parts.
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 Flower Mound 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
- Any smell of gas: leave first, then call
- 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
Upfront written pricing before any work starts
No heating repair starts until you’ve approved a written price. It includes:
- What the written price covers: the diagnosis, the repair and any safety items we find.
- 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.
Why homeowners call us
- NATE-certified technicians
- 24/7 service
- Upfront written pricing before any work starts
- Financing available
- Registered with the Town of Flower Mound as a mechanical contractor
- All major brands, including Carrier, Trane, Lennox, Rheem, American Standard, York, Daikin, Mitsubishi, Fujitsu, Amana, Bryant and Goodman
More for Flower Mound: HVAC service in Flower Mound, AC repair in Flower Mound, AC installation in Flower Mound. See also furnace repair and heating service and HVAC maintenance and tune-ups.
Also nearby: heating repair in Lewisville, heating repair in Carrollton.
Call 972-423-0012, open 24 hours.
