Heating and Air Conditioning in Lathrop, California

Your Professional Heating and AC Repair Specialists

Are you nervous that you might have to spend another winter with your faulty furnace? Or scared of the idea of an unreliable air conditioner for this upcoming summer?

Fear no more, because Irish Heating and Air has got your back.

We are the leading authority in heating and air conditioning repair in Lathrop because we provide honest, efficient service at fair prices. We’ve been in the industry for years, so we know exactly what to look for in order to diagnose your heating and AC issues–and we have all the skills and tools needed to fix them, too! So whether it’s a burnt out pilot light, a faulty heat exchanger, or simply an air filter change and a quick tune up, we can make sure that your Lathrop heating and AC repairs are done right. Just give us a call today to schedule an inspection!

Mike, one of our heating and AC repairs in Lathrop, is doing a routine maintenance check

Our HVAC Repair Specialists Can Do it All

There’s nothing that intimidates our professional technicians when it comes to your AC or furnace. We’ve tackled big commercial HVAC installations, small residential AC repairs, and everything in between. Our HVAC pros have specialized knowledge and training in the following areas:

Irish Heating and Air is proud to offer the following benefits to our customers:

  • A 1 year warranty on all labor
  • Guaranteed on-time services
  • 10% discount for seniors and military

Keep Your AC System and Furnace Running Longer With Our Maintenance Plans

Another thing we always recommend to our customers is routine preventative maintenance. By allowing our Lathrop heating and AC repair technicians to inspect your furnace annually, bi-annually, or quarterly, you’ll be saving yourself hundreds of dollars in costly repairs later on down the road. We catch problems right when they start, nip them in the bud, and leave your home with a fine-tuned, fully-functioning heating and cooling machine. Call and ask about our preventative maintenance plans today.

Commercial HVAC Services in Lathrop

When it comes to commercial HVAC repair services, it’s always best to hire an expert. Not only is a commercial HVAC system larger than a residential system, it is also spread across the property. A commercial system needs proper ventilation and exhaust systems in place to ensure that the building’s air quality isn’t affected. On top of this, the exhaust system of your commercial air conditioner needs to meet local, state, and federal specifications. All in all, the complexity involved in installing, repairing, or replacing a commercial air conditioning system requires a trained technician.

Fortunately for local business and commercial property owners across the Central Valley, Irish Heating and Air technicians have the expertise and equipment to successfully complete your commercial HVAC project efficiently and effectively. Our technicians are local to the area, so whether your property is located in Lathrop, Lodi, Modesto, or any other city in the Central Valley, schedule an appointment with us today, and we’ll get your commercial HVAC system back up and running in no time.

Successful commercial duct repair in Lathrop

Commercial Air Conditioning Repair & Replacement

Irish Heating & Air specializes in commercial HVAC installations and replacements. We know how important having a fully functional HVAC system is for a business or warehouse, which is why our professional technicians have been trained and certified to work on a variety of commercial brands.

Rest assured knowing that when you work with our team of experts, we’ll come prepared with all the tools and knowledge necessary to complete your project quickly, and with as little disruption to your daily operations as possible. Our technicians use a checklist to ensure that each step of the installation process is completed properly.

Our licensed commercial HVAC contractors consistently go above and beyond to meet the needs of our commercial clients, and we’re committed to providing long-lasting HVAC installations and replacement services to businesses and other commercial properties in Lathrop and beyond.

We’ll make sure that by the time we finish our work, your HVAC system is up to code and running efficiently— extending the life of your system and increasing monthly savings. When you need a commercial HVAC replacement or installation in Lathrop, give Irish Heating & Air a call today.

Other Commercial Services in Lathrop

Our team can also rebalance your commercial HVAC system, install new smart controls and environmental sensors, expand your current system, install new air purifiers and air scrubbers, and more. Learn more about our commercial HVAC services in Lathrop, or call now to speak with an expert.

rooftop commercial packaged HVAC system and square ductwork in Lathrop, California
array of smaller rooftop air conditioners for a retail property

Serving Lathrop and the Greater Central Valley

Over the years, the HVAC contractors at Irish Heating and Air Conditioning have been to, and seen, everything. Our team of technicians have years of experience working with both residential and commercial HVAC systems, identifying issues, and systematically solving those issues until the system is fully functional again.

Irish Heating and Air technicians are local to the area, fully licensed and insured, and only use high quality materials for each and every project. We pride ourselves on our customer service and our collective dedication to our craft. We firmly believe in seeing a job through until it’s done, no matter how long it takes.

Our service doesn’t start and stop in Lathrop. We routinely provide heating and air services to communities throughout California’s central valley, including:

Our professional HVAC technicians are trained to provide air conditioning repairs, AC installations, replacements, and tune ups. We also provide commercial AC repairs and installations, ventilation and air quality control system repairs, thermostat repairs, air duct replacements, and more!

The Irish Heating and Air office is open Monday through Saturday from 8am to 7pm and Sunday from 9am to 5pm. You can also fill out our online contact form to schedule your appointment with a member of our HVAC repair team today.

Fast & Dependable Air Conditioning Repair in Lathrop, CA

At Irish Heating and Air, we take your comfort seriously. We believe that everyone in Lathrop should have dependable air conditioning throughout the summer months, but we know that homes with small children or elders rely heavily on the ability to cool a home in order to keep a safe temperature.

If you’re having problems with your old air conditioner, we will come out and perform an inspection. If we can repair it, great! If the problem seems too far beyond repair, then we’ll let you know and recommend some affordable replacement options. We want to be your reliable Lathrop AC repair team for life–and we aim to uphold our reputation as an honest and capable company.

  • Fully trained and licensed
  • NATE certified
  • EPA 608 certified
  • HVAC Excellence certified

Learn more about our air conditioning repair services »

condensers after an air conditioning repair in Lathrop, California

Signs that you need Air Conditioning Repair

  1. Poor Airflow: If you notice weak or inconsistent airflow coming from your vents, it could indicate issues with your AC system’s compressor or ductwork.
  2. Warm Air: If your air conditioning system is blowing warm or hot air instead of cold air, there may be a problem with the compressor, refrigerant levels, or a malfunctioning thermostat.
  3. Strange Noises: Unusual sounds such as banging, grinding, squealing, or rattling coming from your AC unit could indicate mechanical problems, loose parts, or worn-out components that need attention.
  4. Frequent Cycling: If your air conditioner frequently turns on and off without effectively cooling your home, it might be a sign of an underlying issue with the compressor, thermostat, or airflow.
  5. Leaking or Moisture Buildup: Any leakage or excess moisture around your AC unit or in the ductwork could indicate refrigerant leaks, clogged drainage tubes, or other problems that require immediate attention to prevent further damage.
  6. Unpleasant Odors: Foul smells emanating from your vents when the AC is running may suggest mold or mildew growth within the system or ductwork, or possibly a burned-out wire or insulation.
  7. Increased Energy Bills: A sudden spike in your energy bills without a corresponding increase in usage could indicate that your air conditioning system is working harder than normal due to inefficiencies or malfunctions.
  8. Inconsistent Temperatures: If certain rooms in your home are significantly warmer or cooler than others when the AC is running, it could be a sign of ductwork issues, improper insulation, or thermostat problems.
  9. Visible Damage or Wear: Inspect your AC unit for any visible signs of damage, corrosion, or wear and tear on components such as the compressor, fan blades, or electrical connections.
  10. Age of the System: If your air conditioning system is more than 10-15 years old and experiencing frequent issues, it may be more cost-effective to replace it rather than continually investing in repairs.

If you notice any of these signs, it’s advisable to contact a professional HVAC technician to diagnose and address the problem promptly to prevent further damage and ensure your AC system operates efficiently.

Air Conditioning Replacement & Installation

Even the best air conditioners aren’t built to last forever. When your air conditioner is finally reaching a point where its prohibitively expensive to repair, let our team help you choose the perfect option for your unique needs.

For traditional central air systems, American Standard is hard to beat. These units offer the best balance of high-SEER efficiency ratings, affordable up-front costs, reliability, and warranties. If you want to forget your air conditioner ever broke in the first place, American Standard is a great place to start.

Another option worth checking out is the Mitsubishi Electric line of ductless HVAC equipment. These units can be installed throughout your home to provide more individualized control over each part of your home, which is great for households that can’t agree on a temperature. They’re also extremely efficient, and can quickly offset higher installation costs with monthly savings.

Want to learn more? Visit our air conditioning installation page or call today to speak with an expert. 

ductless air conditioner installed in Lathrop

“These are honest people.  This alone is enough for me to hire them but given the fact that they did a superb job of putting two 4 tons on my home in 2 days and leaving a clean attic tops the scale.  Ryan is a man of his word.  In addition to that, it shows he cares more on the job being done than its monetary gains.   Jesus and Martin are like boy scouts! They never failed to impress me.  Not only did I feel they never took their jobs for granted but they made sure everything is working and in perfect condition before leaving.   If you are looking for an HVAC company, look no further.  7 companies came to my house before them.  Although the price they quoted are competitive,  Its their work ethics that left the others in the dust.”

Martin A., Read more

Furnace Repair Services

While reliable air conditioning is a little more crucial than heating in Lathrop, it’s still not a lot of fun to shiver through Christmas.

The good news is that our heating contractors are experienced with every major brand of heating equipment that you’ll find in Lathrop, which means you’ll enjoy fast, dependable repairs on equipment by:

  • Rheem
  • Maytag
  • American Standard
  • Goodman
  • Arcoaire
  • Ducane
  • Ruud
  • LG
  • Olsen
  • Trane
  • Frigidaire
  • York
  • Amana
  • Bryant
  • Payne
  • And more


Our first priority is always to try and repair your current equipment. After all, there’s no sense in shelling out for a new furnace when you can get a few more years out of your current one. Our team regularly replaces cracked heat exchangers, broken blower components, and gas leaks, and we can perform most furnace repairs in only an hour or two.

There are many reasons your furnace could lose connection to your thermostat, including bad wiring, faulty power source, other settings overriding your manual settings, and problems with the furnace itself. An improperly installed smart thermostat can even break your furnace.

First, don’t panic.

All furnaces have a reset button somewhere on the unit. Typically they’re red or yellow and located inside the blower compartment. See if the button has been tripped and push it if necessary.

Next, make sure your thermostat is set correctly. Most automatic and smart thermostats have a manual heating mode you can switch on, which will override any other commands.

Finally, check the breaker panel. If there is no sign of power for your furnace, there’s a chance it could have tripped the breaker.

If you’ve checked all of those options and your furnace still isn’t turning on, it’s time to call in a technician. There are many other things that can go wrong with a furnace, but there are only so many fixes that you can DIY.

Furnaces use the flue, or vertical exhaust, to eject carbon monoxide and other compounds. Many of these compounds can be toxic or harmful if inhaled, so a clear flue is a necessity.

If you see excessive soot around the flue, water streaking down the walls of your furnace, or a yellow pilot light, chances are good that your flue is clogged. Be sure to call for help at the first sign of trouble.

Several factors could contribute to your furnace not blowing hot air:

1. Thermostat Setting: Make sure your thermostat is set to “Heat” mode and the temperature is set higher than the current room temperature. Sometimes, a simple adjustment to the thermostat can solve the problem.

2. Air Filter: A dirty or clogged air filter can restrict airflow, causing the furnace to overheat and shut down or produce lukewarm air. Check the air filter and replace it if it’s dirty.

3. Blocked Vents or Registers: Ensure that all vents and registers throughout your home are open and unobstructed. Blocked vents can restrict airflow and reduce the efficiency of your furnace.

4. Pilot Light or Ignition Issues: If you have a gas furnace, the pilot light or ignition system may not be functioning properly. Check to see if the pilot light is lit. If it’s out, follow the manufacturer’s instructions to relight it. If you have an electronic ignition system, listen for clicking sounds indicating that the ignition is attempting to light the burner.

5. Dirty Burner or Heat Exchanger: A dirty burner or heat exchanger can prevent efficient heat transfer, resulting in lukewarm air. Schedule a professional furnace maintenance service to clean these components.

6. Thermostat Calibration: Your thermostat may need calibration. If it’s not reading the temperature accurately, it could cause the furnace to cycle incorrectly.

7. Ductwork Issues: Leaky or poorly insulated ductwork can result in heat loss before the warm air reaches the rooms. Inspect your ductwork for leaks, gaps, or damage, and repair as needed.

8. Furnace Size: If your furnace is too small for your home, it may struggle to heat the space adequately. Conversely, if it’s too large, it may short cycle, resulting in insufficient heating.

9. Electrical Issues: If you have an electric furnace, check for tripped circuit breakers or blown fuses in your electrical panel.

If your furnace is turning on and off frequently, a behavior known as “short cycling,” it could indicate several potential issues:

1. Dirty Air Filter: A dirty or clogged air filter restricts airflow, causing the furnace to overheat and shut off prematurely. Check the air filter and replace it if it’s dirty.

2. Thermostat Malfunction: A malfunctioning thermostat may be incorrectly sensing the temperature, causing the furnace to cycle on and off rapidly. Check the thermostat settings and consider replacing it if necessary.

3. Improperly Sized Furnace: If the furnace is too large for the space it’s heating, it may reach the desired temperature quickly and then shut off prematurely, leading to short cycling. Conversely, an undersized furnace may struggle to heat the space efficiently.

4. Blocked Vents or Registers: Blocked or closed vents and registers restrict airflow, causing the furnace to overheat and cycle off prematurely. Ensure that all vents and registers are open and unobstructed.

5. Dirty or Faulty Flame Sensor: A dirty or faulty flame sensor may fail to detect the burner flame, causing the furnace to shut off as a safety measure. Cleaning or replacing the flame sensor can resolve this issue.

6. Restricted Airflow: Issues such as blocked or collapsed ductwork, closed or obstructed air vents, or a malfunctioning blower motor can restrict airflow, leading to overheating and short cycling.

7. Gas Supply Issues: If you have a gas furnace, problems with the gas supply, such as low gas pressure or a partially closed gas valve, can cause the furnace to shut off prematurely.

8. Heat Exchanger Problems: Cracked or damaged heat exchangers can cause safety mechanisms to shut down the furnace prematurely. A professional inspection is required to diagnose and address heat exchanger issues.

9. Electrical Problems: Faulty wiring, a malfunctioning control board, or other electrical issues can cause the furnace to cycle on and off unexpectedly.

York furnace and matching air conditioner ready for installation in Lathrop
Goodman furnace installation

Furnace Installation & Replacement

Even the best furnace isn’t made to last forever, though. If your furnace is 8-12 years old, chances are good that it’s nearing the end of its lifespan. That means you can fix one thing only for two more to break. When that time comes, our affordable financing options make it easy to buy a new furnace that will keep your family warm and toasty for years to come.

One of our favorite heating options is the Mitsubishi ductless mini-split system. These units can be installed in rooms throughout your house to provide more personalized climate control: heat the rooms you want, and forget the ones you don’t. That can significantly cut down on your operating costs.

Learn more about our furnace repair and replacement services »

ductless heating systems installed by our HVAC team in Lathrop, California

HVAC Services in French Camp

Our services aren’t limited to Lathrop. We’re also happy to service customers in nearby French Camp. Call us any time for:

  • Air conditioning repair & installation
  • Furnace repair & installation
  • Indoor climate control and automation
  • Commercial HVAC services

Learn more about our HVAC services in French Camp »

San Joaquin General Hospital in French Camp, CA

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