Residential Services
We deliver dependable heating, cooling, and indoor air quality solutions you can trust. As a Carrier Factory Authorized Dealer, we bring industry-leading expertise, top-quality products, and professional service to every job, ensuring reliable comfort for your home year-round. When you choose us, you can count on service that puts you and your family's needs first.
Commercial Services
We deliver reliable, cost-effective commercial HVAC and refrigeration solutions tailored to your business. From system design and installation to maintenance and 24-hour emergency service, our team works to keep your equipment running efficiently and your operations on track. You can count on us for dependable performance and responsive service when it matters most.
Heating & Cooling Services
At Mullen Refrigeration Service, comfort isn’t just a service—it’s our commitment. We help homeowners create healthier, more comfortable living spaces and ensure businesses run smoothly with reliable, energy-efficient heating and cooling solutions.
Proudly serving Westmoreland County for over 67 years from our Latrobe, PA location, we’ve built our reputation on dependable local service and trusted, high-quality products you can rely on.
Our mission is simple: deliver professional service long after the sale. Whether you need a new system installed, routine maintenance, or fast, reliable repairs, our experienced team is here to keep you comfortable every step of the way.
1
Schedule Your Service
Call or book online at your convenience. We’ll find a time that works for you and gather a few details about your system or issue.
2
Expert Evaluation & Solutions
Our trained technician arrives on time, evaluates your system, and explains your options clearly. You’ll get honest recommendations and upfront pricing.
3
Fast, Reliable Service
We complete the work efficiently using quality parts and proven methods, ensuring your system runs smoothly and your comfort is restored.
Areas We Serve
- Latrobe
- Greensburg
- Ligonier
- New Alexandria
- Mt. Pleasant
- Derry
- Blairsville
- Export
- Delmont
- Jeannette
- Donegal
- Stahlstown
- Laughlintown
- Bolivar
- New Florence
- New Derry
- Bradenville
- New Stanton
- Hunker
- Youngwood
What Our Customers Are Saying
Fast, Friendly Services
This company is incredible!!! From the outgoing friendliness of the crew, to the beautiful install, to the cleaned up work area! I am over the top pleased with Mullen! I highly recommend you call them first for any HVAC needs! AAAAA+++++!!!
Robert
2 weeks ago
Jennifer
2 months ago
Mullen responded to an emergency call within just a few hours. They guided us through the purchase of a new system with patience. Every person we interacted with was polite and professional.
Excellent company! The technicians are very good at installation, regular maintenance or any repairs you need on your furnace, air conditioner or tankless water heater system. The folks in the office are very friendly, helpful and efficient!
Chris
3 months ago
Mullen is our go to HVAC team for our residential and commercial systems. Always a friendly voice when I call for service or my fall and spring system check. The technicians are always knowledgeable and answer any questions we have at both my home and office. Highly recommend them to anyone needing service or installation.
Tom
3 months ago
Carrier Heating & Cooling Systems
Financing
Mullen Refrigeration Service, Inc. refers customers to financing via Wells Fargo. It's a convenient way to pay for your home comfort system. Your Carrier credit card offers convenience monthly payments to fit your budget and easy-to-use online account management and bill payment options. Subject to credit approval.
Frequently Asked Questions
How often should I service my HVAC system?
We recommend professional maintenance twice a year, once in the spring for your cooling system and once in the fall for your heating system. Regular service helps improve efficiency and prevent costly breakdowns.
How do I know if I need a repair or a replacement?
If your system is over 10–15 years old, needs frequent repairs, or isn’t keeping your home comfortable, it may be time to consider a replacement. We’ll help you evaluate the best option based on your needs and budget.
How can I lower my energy bills?
Routine maintenance, changing air filters regularly, sealing ductwork, and upgrading to a high-efficiency system can all help reduce energy costs.
Why is my system not cooling or heating properly?
Common causes include dirty filters, low refrigerant, thermostat issues, or worn components. Our technicians can quickly diagnose and fix the problem.
How often should I change my air filter?
Most homeowners should change their filter every 1–3 months, depending on usage, pets, and indoor air quality needs.
Do you offer emergency HVAC services?
Yes, we offer 24-hour emergency service to ensure you’re never left without heating or cooling when you need it most.
What size HVAC system do I need?
System size depends on your home’s square footage, insulation, and layout. We perform a proper load calculation to ensure the perfect fit for comfort and efficiency.
What are the benefits of a high-efficiency system?
High-efficiency systems use less energy, lower utility bills, improve comfort, and often qualify for rebates or incentives.
Can you help improve my indoor air quality?
Absolutely. We offer solutions like air purifiers, humidifiers, dehumidifiers, and advanced filtration systems to help you breathe cleaner, healthier air.
Do you offer maintenance plans?
Yes, our maintenance plans help keep your system running efficiently year-round while reducing the risk of unexpected repairs and extending equipment life.
Contact Mullen Refrigeration Service Today!
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