Winter HVAC Inspection Checklist | Leander 78728

Published October 16, 2026

Get your heating system ready for winter in Leander 78728. Follow our HVAC inspection checklist and call One Hour at (512) 763-5939 to schedule service.

What a Professional HVAC Inspection Covers Before Cold Weather Hits

Winter in Leander, TX can feel mild compared to states further north — but it only takes one hard freeze or an unexpected cold snap to expose a heating system that wasn't ready. Homes in ZIP 78728 often run their heat pumps and gas furnaces for weeks at a stretch in January and February, and equipment that sat idle all summer can develop real problems fast. A pre-season HVAC inspection catches those problems before they become emergency calls on the coldest night of the year.

This checklist walks through what a thorough winter inspection should cover, what homeowners can handle themselves, and where a licensed technician needs to step in.

## Start With What You Can Do Yourself

Before a technician even arrives, a few DIY checks can make the inspection more productive — and sometimes reveal problems that need faster attention.

- **Replace the air filter.** A clogged 1-inch filter (MERV 8 is typical for most residential systems) restricts airflow enough to cause short-cycling and overheating in furnaces. Change it monthly during heavy-use seasons; 4-inch media filters can go 6–12 months.
- **Test the thermostat.** Switch the system to HEAT mode and raise the set point 5°F above room temperature. You should hear the system fire up within 60–90 seconds. If it doesn't, note that for your technician — it could be a thermostat battery, wiring, or a board issue.
- **Clear the area around indoor and outdoor units.** Remove stored boxes, lawn equipment, or debris from around the air handler and the outdoor compressor/heat-pump cabinet. Leave at least 18–24 inches of clearance on all sides.
- **Check all supply and return vents.** Make sure furniture, rugs, or drapes aren't blocking them. Restricted airflow stresses the blower motor and can cause the heat exchanger to overheat.
- **Look for visible signs of rust or corrosion** on the furnace cabinet, flue pipe connections, and the area around the heat exchanger access panel. Discoloration or soot streaks near burner compartments are red flags to share with your technician.

These steps take about 20 minutes and give your technician a cleaner baseline to work from.

## What a Licensed Technician Inspects

A professional HVAC inspection in Leander 78728 goes well beyond what a homeowner can safely check. Here's what should be on every technician's list for a winter visit.

**Heat exchanger integrity** is the most critical safety check on a gas furnace. A cracked heat exchanger can leak carbon monoxide into living spaces — the Consumer Product Safety Commission estimates roughly 170 people die from non-fire CO poisoning each year in the U.S. Technicians use combustion analyzers and visual inspection (sometimes with a camera) to confirm the exchanger is intact.

**Burner condition and ignition system.** Dirty or misaligned burners produce uneven flames, incomplete combustion, and excess carbon monoxide. The igniter (usually a hot-surface igniter rated at 80–120 volts) should glow fully and light the burners within seconds. Failed igniters are one of the most common no-heat calls in winter, and replacement typically runs $150–$300 depending on the unit.

**Flue and venting inspection.** On high-efficiency condensing furnaces (90%+ AFUE), PVC vent pipes should be free of cracks, proper slope, and clear termination points outside the home. On older 80% AFUE units with metal flues, the technician checks for separation, rust-through, and proper draft.

**Refrigerant charge and heat-pump components.** Many Leander 78728 homes use heat pumps rather than gas furnaces. A technician will check refrigerant pressure and verify the reversing valve switches the system from cooling to heating mode correctly. Note: new equipment manufactured from 2025 forward uses R-454B refrigerant rather than R-410A, which is being phased down under the EPA's AIM Act. If your heat pump is older and needs a significant refrigerant top-off, that's worth a frank conversation about system age.

**Blower motor and belt (if applicable).** The technician measures amperage draw on the blower motor. A motor pulling above its rated amperage is overworked and approaching failure. Variable-speed ECM motors are more efficient than single-speed PSC motors — some high-efficiency systems achieve 24 SEER2 ratings in part because of variable-speed technology — but both types need to be within spec.

**Electrical connections and controls.** Loose terminals, corroded contacts, and faulty capacitors account for a significant share of mid-season breakdowns. Tightening connections and testing capacitor microfarad ratings takes a few minutes and can prevent a very inconvenient service call.

## Efficiency Ratings and Why They Matter in Winter

If your system is more than 15 years old, a pre-season inspection is a good time to discuss whether repairs still make financial sense. Since January 1, 2023, new residential HVAC equipment must meet updated SEER2 and HSPF2 efficiency standards under Department of Energy regulations. Equipment sold in the South/Southwest climate region (which includes Texas) must meet at least 15.2 SEER2 for central air conditioners and 7.5 HSPF2 for heat pumps.

Older systems often operate at 8–10 SEER, which means they're moving roughly half the heating or cooling per dollar spent compared to modern equipment. A technician can pull the model number and help you find the original efficiency rating so you have real data for that decision — not just a sales pitch.

Repair costs also factor in. The industry rule of thumb is that if a repair exceeds 50% of the cost of a new system, and the unit is more than 10 years old, replacement usually wins economically. A new heat pump or gas furnace installation in the Leander 78728 area typically ranges from $4,000–$10,000+ depending on system size, efficiency tier, and any duct modifications needed.

## Timing: When to Schedule Your Inspection

The best window for a pre-winter HVAC inspection in Central Texas is October through mid-November, before overnight lows consistently drop below 50°F. Once cold weather arrives in earnest, HVAC companies get busy fast and scheduling a non-emergency visit gets harder.

If you missed that window and it's already cold, don't skip the inspection — just call sooner rather than later. A system limping through winter on worn parts is more likely to fail completely during the coldest stretch of the season, when both discomfort and repair costs are highest. Emergency after-hours service calls typically run $100–$200 more than standard appointments, subject to company policies and call volume.

## Ready to Get Your System Checked?

One Hour Heating & Air Conditioning of Northwest Austin serves homeowners throughout Leander and ZIP 78728 with professional HVAC inspections before winter sets in. If you want a technician to walk through this checklist with your specific equipment — and catch problems while they're still small — call us at **(512) 763-5939** to schedule an appointment. Don't wait for the first freeze to find out your heat needs help.

Key facts

New residential HVAC equipment in Texas must meet at least 15.2 SEER2 for central air conditioners and 7.5 HSPF2 for heat pumps under DOE regulations effective January 1, 2023.
R-410A refrigerant is being phased down under the EPA AIM Act; new equipment manufactured from 2025 uses R-454B as the replacement refrigerant.
The Consumer Product Safety Commission estimates roughly 170 people die annually in the U.S. from non-fire carbon monoxide poisoning, with cracked heat exchangers being a leading residential source.
Hot-surface igniter replacement on a gas furnace typically costs $150–$300 depending on the unit, and is one of the most common no-heat service calls in winter.
New heat pump or gas furnace installation in the Leander 78728 area typically ranges from $4,000–$10,000+, depending on system size, efficiency tier, and duct modifications.
Variable-speed HVAC systems can reach efficiency ratings of up to 24 SEER2, roughly double the output-per-dollar of older 8–10 SEER equipment still in service.

Popular neighborhoods we cover in 78728: Wells Branch, Bratton, North Austin Tech Corridor.

Looking for the full coverage page? See HVAC service in ZIP 78728 for neighborhood-specific notes, response times, and rebates.

If you want same-day help, call (512) 842-9551 or book your appointment online.

Frequently Asked Questions

How much does a winter HVAC inspection cost in Leander, TX?

A professional winter HVAC inspection in Leander typically costs between $75 and $200, depending on the company, system type, and what's included in the visit. Some providers bundle the inspection with a tune-up that includes cleaning and minor adjustments, which can push the price toward the higher end but adds more value.

When should I schedule a heating inspection in ZIP 78728?

The best time to schedule a heating inspection in ZIP 78728 is October through mid-November, before overnight temperatures consistently drop below 50°F. Scheduling early gives you access to more appointment slots and leaves time to order parts before cold weather peaks.

Is a cracked heat exchanger dangerous?

Yes, a cracked heat exchanger is a serious safety hazard because it can allow carbon monoxide to leak into your home's living spaces. The Consumer Product Safety Commission estimates roughly 170 people die annually from non-fire CO poisoning in the U.S., and a compromised heat exchanger is one of the leading causes in homes with gas furnaces.

What refrigerant does new HVAC equipment use in 2025?

New residential HVAC equipment manufactured from 2025 onward uses R-454B refrigerant instead of R-410A, which is being phased down under the EPA's AIM Act. If your existing system uses R-410A, it can still be serviced, but replacement refrigerant availability and cost may change over time as the phase-down continues.

Can I do any part of an HVAC inspection myself?

Homeowners can safely handle a few parts of an HVAC inspection, including replacing the air filter, testing the thermostat, clearing debris from around indoor and outdoor units, and checking that vents are unobstructed. Tasks involving gas connections, refrigerant, electrical components, and heat exchanger inspection require a licensed HVAC technician.

How do I know if my HVAC system is too old to repair?

A common industry guideline is that if a repair costs more than 50% of the price of a new system and the unit is over 10 years old, replacement is usually the better financial choice. A technician can pull your system's model number to find its original efficiency rating and help you weigh repair costs against the long-term savings of a more efficient unit.