117 Regency Dr., Wylie, TX 75098 Mon–Fri 8AM–6PM · Sat 8AM–2PM
Now accepting same-day drop-offs citylineauto601@gmail.com
Cityline
Automotive
Home
AboutWarrantyPricingReviewsAreasContact FAQ Car Care Tips Call 972-442-0099
HoursMon–Fri 8AM–6PM
Sat 8AM–2PM · Sun closed
Home/Services/A/C & Heating
Service · Climate

Heating & Air Conditioning

In North Texas, A/C isn’t a luxury. We find the leak instead of topping it off and sending you back out into August.

2yr / 24k warrantyFree multipoint inspectionWylie, TX
The approach

Here is the thing about a quick A/C recharge: refrigerant doesn’t get used up. If your system is low, it’s low because it leaked out — and a can of refrigerant just buys you a few weeks before you’re hot again, minus the money.

So we test. Pressure readings on both sides, dye or electronic leak detection, and an actual look at the condenser, lines, seals and compressor. Then we tell you where it’s going and what it takes to keep it in.

What this service includes

  • A/C performance testing and pressure diagnosis
  • Evacuate and recharge to manufacturer specification
  • Electronic and dye leak detection
  • Compressor, clutch, condenser and evaporator replacement
  • Expansion valve, orifice tube and receiver-drier service
  • Blower motor and resistor replacement
  • Blend door actuator diagnosis — the classic ‘hot on one side’ complaint
  • Heater core and cabin heat diagnosis
Every a/c and heating job at Cityline includes a complimentary multipoint inspection and is covered by our 2-year / 24,000-mile warranty on most repairs.
Warning signs

When to bring it in.

Any one of these is worth a phone call. Most of them are cheaper to fix now than in three months.

01

Air blows but isn’t cold

The most common complaint, and almost always a refrigerant leak somewhere in the system.

02

Cold at highway speed, warm at a stoplight

Often a condenser airflow or cooling fan problem rather than the A/C system itself.

03

Clicking or cycling every few seconds

Short-cycling usually means the system is low on charge and protecting itself.

04

Hot on one side, cold on the other

Classic blend door actuator failure — a common and very fixable problem.

05

Weak airflow on every setting

Typically a blower motor, resistor, or a cabin air filter that hasn’t been changed in years.

06

Musty smell when the A/C starts

Moisture and bacteria in the evaporator case. Unpleasant, and worth addressing.

How we work

Diagnose first. Quote second.

1

Performance test

We measure vent temperature and system pressures before touching anything.

2

Find the leak

Electronic sniffing or UV dye, plus a physical inspection of the condenser, lines and seals.

3

Repair the cause

Seals, hoses, condenser or compressor — whatever is actually letting refrigerant out.

4

Evacuate, recharge, verify

Charged to spec by weight, then re-tested so you know it’s cold before you leave.

Questions

A/C & Heating, answered.

Because it leaked. Refrigerant is a sealed-system fluid — it isn’t consumed. Any shop that recharges without looking for the leak is selling you a temporary fix.

It depends on the refrigerant type your vehicle uses and how much is needed. R-1234yf systems on newer vehicles cost noticeably more than older R-134a systems. We’ll quote it before we start.

Yes — spring is the best time. Finding a slow leak in April is a much better experience than discovering it during the first 105-degree week in July.

Usually a blend door actuator, a thermostat stuck open, low coolant, or a partially clogged heater core. All four are things we diagnose regularly.

Related

Other things we handle in-house.

Ready when you are.

Tell us what your vehicle is doing. We’ll tell you what it actually needs — and what it doesn’t.

Call Now Book Service