With a median build year of 2003, many Allen homes still have their original builder-installed AC. As those systems pass 15 or 20 years, the repairs get bigger. Here’s what to check first.
Before you call about AC in Allen
- 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.
- Upstairs vs. downstairs. Many Allen homes have two systems.
- Filter. Check it first; it’s the easiest fix.
- Ice. Frozen lines mean turn it off and let it thaw.
- System age. The data plate on the outdoor unit shows it. Many Allen systems are original to the house.
Still not cooling? Call 972-423-0012, 24/7.
Typical AC repairs in Allen
- Missing or loose refrigerant port caps.
- Drain line clogs on attic units.
- Capacitors worn out by summer heat.
- Compressor and fan motor failures on aging units.
- Evaporator coil leaks on original systems.
See why your AC isn’t blowing cold air and signs your AC needs repairs.
Allen homes and what their age means for your system
Allen grew fast after 1990. The Census puts the median Allen home at 2003, and about 73% of homes are single-family detached houses. That means a lot of original builder-installed systems reaching the age where major repairs start.
The Census counts about 39,094 homes in Allen. Here’s how they break down by decade built:
| Built | Share of homes | What we often find |
|---|---|---|
| Before 1990 | About 17% | The older part of Allen. Most systems here have been replaced more than once. |
| 1990s | About 23% | About 30 years old; most are on a second system. |
| 2000s | About 33% | Allen’s biggest decade. Original builder systems are 15 to 25 years old. |
| 2010 and later | About 27% | Newer homes, 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.
Allen’s inspection checklist calls for locking refrigerant caps on all the service ports of an AC condenser. They keep refrigerant from being tampered with or vented. If your outdoor unit is missing them, we’ll point it out. Allen’s rough-in checklist also calls for ducts and equipment to be supported with 6-inch saddles and solid metal straps fastened to the structure. Sagging, poorly supported ducts in an attic restrict airflow, so we check the supports whenever we’re working up there.
Allen permits for HVAC work
- Allen’s inspection types include a duct rough and an HVAC/mechanical final. The City advises homeowners to make sure a hired contractor has applied for and received the permit before work starts.
- The City’s mechanical exemptions include replacing a minor part that doesn’t change the equipment’s approval.
- Allen’s code says a person who isn’t registered with the City as an air conditioning and refrigeration contractor may not obtain permits for HVAC work. Registration lasts one year.
- The City of Allen processes all permits through its Citizen Self-Service (CSS) portal. HVAC/Mechanical is a residential permit type.
Dallas Heating and Air Conditioning is registered with the City of Allen as a mechanical contractor. For a replacement, we pull the permit and schedule the inspection.
Allen’s mechanical exemptions cover replacing a minor part that doesn’t change the equipment’s approval. Many small repairs may fall under that exemption; we’ll tell you if yours doesn’t. Replacing equipment needs a permit from a City-registered contractor.
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.
New refrigerants. Under the EPA’s AIM Act rules, new home air conditioners and heat pumps are moving to refrigerants with lower global warming potential, such as R-454B and R-32. Read what the R-410A phase-out means.
How a Allen repair visit works
- You call. We answer 24/7 and set a time that works for you.
- Diagnosis. A NATE-certified technician checks the thermostat, electrical, airflow, refrigerant and drain, and finds the cause.
- Written price. You get upfront written pricing before any work starts. If replacement makes more sense, we show you both options.
- Permit if needed. If the repair is one Allen requires a permit for, we pull it.
- Repair and test. We fix it, then check the temperature drop across the coil and the drain.
Call right away if
- An AC that’s off in high heat with an infant, an older adult or someone with a medical condition in the house
- Water coming through a ceiling below an attic unit
- A burning or electrical smell from the indoor or outdoor unit
- A breaker that trips again right after you reset it
Upfront written pricing before any work starts
Before any repair, you see the price in writing. Here’s what it includes:
- Financing available on larger repairs.
- If replacement makes more sense than repair, you get both options side by side.
- If we find more than one problem, each is listed separately so you can decide.
- What the written price covers: the diagnosis, the part or repair, and any permit required.
Why homeowners call us
- All major brands, including Carrier, Trane, Lennox, Rheem, American Standard, York, Daikin, Mitsubishi, Fujitsu, Amana, Bryant and Goodman
- Registered with the City of Allen as a mechanical contractor
- Financing available
- Upfront written pricing before any work starts
- 24/7 service
- NATE-certified technicians
More for Allen: HVAC service in Allen, heating repair in Allen, AC installation in Allen. See also AC repair and HVAC maintenance and tune-ups.
Also nearby: AC repair in Plano, AC repair in McKinney, AC repair in Wylie.
Call 972-423-0012, open 24 hours.
