Residential & Commercial HVAC Repair

Fast, Honest HVAC Repair in North Alabama

When your air conditioner, heat pump or furnace stops working, get clear answers from a licensed local contractor. We diagnose the problem, explain your options and provide pricing before approved repairs begin.

Book HVAC Repair Call 256-432-7622

Appointment availability varies by location, workload and technician availability. Diagnostic charges may apply.

Since 2008Local Experience
HVAC #09005Alabama Certified
ResidentialHome HVAC Repair
CommercialBusiness HVAC Service
Equipment We Diagnose & Repair

Professional HVAC Repair for Homes and Businesses

Our technicians use system measurements, electrical testing and operating checks to identify the cause of the failure instead of guessing from symptoms alone.

Central Air Conditioners

Cooling diagnostics and repairs for central split systems and packaged air conditioners.

Heat Pumps

Heating and cooling diagnostics for standard, dual-fuel and variable-speed heat-pump systems.

Gas Furnaces

Ignition, airflow, control, safety and heating-performance troubleshooting.

Packaged HVAC Systems

Repair for gas packs, packaged heat pumps and packaged air-conditioning systems.

Ductless Mini-Splits

Single-zone and multi-zone mini-split diagnostics, repair and maintenance.

Thermostats & Controls

Thermostat, low-voltage, communicating-control and zoning-system troubleshooting.

Common HVAC Problems

Signs Your HVAC System Needs Professional Attention

Some HVAC problems start with subtle changes in comfort, noise or energy use. Scheduling service early may prevent additional damage, but the exact cause cannot be confirmed without testing the system.

Safety note: Shut the system off and seek professional help if you smell burning, see smoke, hear severe electrical arcing, suspect a gas leak or detect carbon monoxide.
Air conditioner runs but does not cool
Heat pump is not heating or cooling properly
Furnace blows cold air or will not ignite
Weak or uneven airflow from supply vents
Frozen evaporator coil or ice on refrigerant lines
System starts and stops repeatedly
Unusual noises, burning smells or musty odors
Thermostat is blank, inaccurate or unresponsive
Condensate drain is clogged or leaking water
Breaker trips, fuse blows or system will not start
Outdoor unit runs while indoor blower does not
High utility bills or declining comfort
Clear Recommendations

Repair the Problem—Not Just the Symptom

Before approved work begins, we explain what failed, what may have contributed to the failure and the available repair options. When a major component has failed, we can also help compare repair cost, equipment age, efficiency, warranty status and expected reliability.

Have a Major Repair Quote?

A second opinion can help confirm whether the recommended repair is necessary and whether replacement should be considered.

Request a Second Opinion

FREE second opinions apply to qualifying major component failures. Other diagnostic charges may apply.

Our Service Process

What to Expect During an HVAC Repair Visit

1

Schedule Service

Call or book online and tell us what the system is doing.

2

Diagnose the System

We test relevant components and operating conditions.

3

Review Findings

We explain the cause, options and pricing before repairs begin.

4

Complete Approved Work

We perform the authorized repair and verify operation.

Repair or Replacement?

Choose the Option That Makes Sense Long Term

A repair may be the best choice when the equipment is newer, otherwise reliable and has an isolated failure. Replacement may deserve consideration when the system is older, repeatedly breaking down, inefficient, out of warranty or facing a major component failure.

We will explain the findings and available options. The final decision remains yours.

Need a Replacement Estimate?

FREE estimates are available for qualifying new and replacement HVAC systems.

Explore HVAC Replacement
Preventive Care

Reduce Avoidable Breakdowns with HVAC Maintenance

Routine maintenance cannot prevent every failure, but it can identify developing problems, improve airflow, support efficient operation and reduce wear caused by neglected components.

View HVAC Maintenance Plans

HVAC Repair Throughout North Alabama

We serve Somerville and surrounding communities across Morgan, Madison and Limestone counties. Contact us to confirm service availability at your address.

Somerville, ALDecatur, ALHuntsville, ALMadison, ALAthens, ALHartselle, ALPriceville, ALTrinity, ALTanner, ALHarvest, ALHazel Green, ALEva, AL
HVAC Repair FAQ

Answers to Common HVAC Repair Questions

The visible questions below match the FAQPage schema included with this page.

We diagnose and repair central air conditioners, heat pumps, gas furnaces, gas packs, packaged systems, ductless mini-splits, thermostats, air handlers, blower motors and many related HVAC components.

Possible causes include a dirty air filter, restricted airflow, thermostat problems, dirty coils, electrical failure, low refrigerant, a refrigerant leak, duct leakage or compressor problems. A professional diagnosis is needed before choosing a repair.

Yes. We service heat pumps, electric heating systems, gas furnaces, dual-fuel systems and packaged heating and cooling equipment.

We service many major HVAC brands. Repair availability depends on the system's age, condition, refrigerant type and replacement-part availability.

Yes. Advanced Service Company LLC provides HVAC diagnostics and repair for homeowners, businesses, property managers and qualifying commercial facilities.

Yes. We offer second-opinion evaluations for major component failures and expensive repair recommendations. FREE second opinions may apply to qualifying major failures; diagnostic charges may apply in other situations.

Repair is often practical for newer equipment with an isolated problem. Replacement may provide better long-term value when a system is older, inefficient, unreliable, uses an obsolete refrigerant or needs a major repair. We explain the options so you can make an informed decision.

Scheduling depends on technician availability, location, demand and the nature of the problem. Call or use the online booking link to request the earliest available appointment.

Yes. Preventive maintenance plans are available to help identify developing problems, support system efficiency and reduce avoidable breakdowns.

Financing may be available to approved customers for eligible HVAC repairs and replacement projects. Approval, rates and terms are determined by the participating finance provider.

We serve Somerville, Decatur, Huntsville, Madison, Athens, Hartselle, Priceville, Trinity, Tanner, Harvest, Hazel Green, Eva and surrounding North Alabama communities.

Call or text 256-432-7622, or use the online booking link on this page.

Get Your HVAC System Working Again

Schedule professional HVAC diagnostics and repair for your North Alabama home or business.

Book Online Call 256-432-7622

Regular hours: Monday–Friday, 7:00 AM–5:00 PM