DiFilippo's Service Company
When you need reliable HVAC in Chester County, PA, DiFillipo’s Service Company has been the trusted name since 1971. Our family-owned business delivers expert heating and cooling solutions throughout the region and the Main Line. Whether you’re dealing with a system breakdown or planning a new installation, our team brings the experience and integrity that local homeowners have depended on for generations.
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Our HVAC Services
Winters in our region can be brutal, and a reliable heating system isn’t just about comfort—it’s essential for your family’s safety. We specialize in furnace and heat pump services, providing expert repairs, installations, and maintenance to keep your home warm throughout the coldest months.
A heating system failure in the middle of winter creates an emergency situation that demands immediate attention. Our technicians arrive equipped to diagnose and repair furnace issues quickly, restoring warmth to your home and ensuring your family stays safe and comfortable.
Choosing the right heating system impacts your comfort and energy bills for the next 15-20 years. We guide you through the selection process, evaluating your home’s size and heating requirements to ensure proper installation. Trust us for HVAC installation in Chester County that’s done right.
Annual heating maintenance prevents mid-winter breakdowns and keeps your system running at peak efficiency. Our thorough inspections catch small problems before they become major repairs, saving you money while extending your furnace’s lifespan and maintaining consistent warmth throughout your home.
Chester County summers demand reliable cooling, and our experienced technicians are ready to keep your home comfortable all season long. From emergency repairs to new system installations, we provide comprehensive air conditioning solutions tailored to your home’s specific needs.
When your air conditioner stops working during a heat wave, you need fast, effective service. Our technicians diagnose issues quickly and make repairs right the first time, restoring cool air to your home when you need it most.
Planning a new air conditioning system requires expert guidance to ensure proper sizing and efficiency. We’ll evaluate your home’s layout, insulation, and cooling requirements to recommend the ideal system that balances performance with energy savings for years to come.
Regular maintenance extends your system’s lifespan and prevents unexpected breakdowns. Our comprehensive tune-ups include cleaning coils, checking refrigerant levels, and inspecting electrical connections to keep your air conditioner running efficiently. When you need a trusted HVAC company in Chester County, we’re here to help.
For homes without ductwork or rooms that need targeted climate control, mini split systems offer an efficient solution. At DiFillipo’s, we exclusively install and service Mitsubishi mini splits, ensuring expert care for these advanced ductless systems that provide both heating and cooling.
Mini split systems require specialized knowledge for proper diagnosis and repair. Our technicians are trained specifically on Mitsubishi equipment, allowing us to quickly identify issues with indoor units, outdoor compressors, or refrigerant lines and restore your system to optimal performance.
Installing a ductless system involves precise placement of indoor units, proper refrigerant line routing, and careful electrical work. We assess your space to determine ideal unit locations and zone configurations, ensuring your Mitsubishi mini split delivers maximum comfort and efficiency throughout your home.
Regular maintenance keeps your ductless system running efficiently and extends its lifespan significantly. Our comprehensive service includes cleaning filters and coils, checking refrigerant levels, and inspecting all system components. For reliable HVAC in Chester County, trust our Mitsubishi-certified expertise.
Heat pumps provide year-round comfort by delivering both heating and cooling from a single, energy-efficient system. These versatile units transfer heat rather than generate it, making them an increasingly popular choice for homeowners looking to reduce energy costs while maintaining consistent temperatures throughout every season.
Heat pump issues can affect both your heating and cooling capabilities, making prompt repairs essential. Our technicians troubleshoot problems with reversing valves, compressors, and refrigerant cycles to restore your system’s dual functionality and keep your home comfortable regardless of the season.
Selecting and installing a heat pump requires careful evaluation of your home’s heating and cooling loads. We analyze insulation levels, square footage, and climate considerations to recommend the right-sized unit, then complete a professional installation that maximizes efficiency and performance for decades.
Preventive maintenance is crucial for heat pumps since they work year-round instead of seasonally. Our tune-ups address both heating and cooling components, checking defrost cycles, inspecting outdoor coils, and testing system performance to prevent breakdowns during peak summer and winter months.
The air inside your home directly impacts your family’s health, comfort, and well-being. From controlling humidity levels to removing airborne contaminants, we offer comprehensive indoor air quality solutions that work seamlessly with your heating and cooling system to create a healthier living environment.
Uneven temperatures between rooms often stem from improper airflow distribution throughout your ductwork. We measure and adjust airflow to each zone, ensuring every room receives adequate heating and cooling while eliminating hot and cold spots that make certain areas uncomfortable.
Excess humidity creates musty odors, promotes mold growth, and makes your home feel uncomfortably sticky during summer months. Our whole-home dehumidification systems work alongside your air conditioner to maintain ideal moisture levels, protecting your home and improving comfort without constantly running your AC.
Dry winter air causes static electricity, dried-out sinuses, and damage to wood furniture and flooring. Whole-home humidifiers add moisture directly into your ductwork, maintaining healthy humidity levels that protect your home’s structure while relieving respiratory discomfort throughout the heating season.
Airborne pollutants including dust, pollen, pet dander, and bacteria circulate continuously through your home’s HVAC system. Advanced air purification systems capture and neutralize these contaminants, providing cleaner air for family members who suffer from allergies, asthma, or other respiratory sensitivities.
Leaky or contaminated ductwork wastes energy and circulates dust throughout your home. As an experienced HVAC contractor in Chester County, we seal duct leaks, remove built-up debris, and repair damaged sections to improve system efficiency and indoor air quality.
Testimonials
Posted on Nora NewmanTrustindex verifies that the original source of the review is Google. They have been amazing!! Last year, they jerryrigged my old system to keep it running while I was sick and waiting for the new system to get here. Just now, Steve resolved my no heat issue in minutes and fixed it.Posted on Michael WhiteTrustindex verifies that the original source of the review is Google. Richard did an excellent job on our heater tuneup. He adjusted the system to provide hotter air through the ducts and fixed a few loose things. DiFillipo’s does excellent work and I recommend them without hesitationPosted on Jerry FerriolaTrustindex verifies that the original source of the review is Google. Very responsive, transparent, and professional. They take the time to explain everything and provide the answers to any questions.Posted on Patrick ParoTrustindex verifies that the original source of the review is Google. Necessary service delivered quickly and professionally.Posted on Kathleen FranklinTrustindex verifies that the original source of the review is Google. Chris thoroughly inspected and cleaned the HVAC in my new house. He found the furnace humidifier was not working; Chris outlined options for me. Chris was very courteous and there were no high pressure sales. Going to have them inspect my A/C in the future. Highly recommend!Posted on d GibbTrustindex verifies that the original source of the review is Google. I love these guys. Shane serviced my two heating units today and did a great job. They are always on time, polite, tidy and answer all of my questions. Great local company.Posted on Daniel Theveny Sr.Trustindex verifies that the original source of the review is Google. Your service technician, Shane, was terrific! On time, and worked very efficiently. I also very much appreciated that he took the time after he was finished with the service work to explain exactly what he addressed and exactly what he did. A most positive and professional experience!!Posted on Eileen FoxTrustindex verifies that the original source of the review is Google. Called this morning because heater wasn’t working and temptation house was dropping Within 2 hours a technician arrived and fixed the faulty wire causing the issue They are responsive and technician was professional and talentedPosted on robert nolanTrustindex verifies that the original source of the review is Google. Outstanding response to weekend outage of furnace during a cold spell— very highly recommended routine maintenance and service contract with them— you will be very happy!Posted on karen martinoTrustindex verifies that the original source of the review is Google. Always a pleasant experience. On time, professional and courteous. Have been a longtime customer and highly recommend
Recognizing early warning signs can prevent complete system failures and costly emergency repairs. If you notice any of these issues, it’s time to contact a professional for evaluation and service.
Grinding, squealing, or banging sounds indicate mechanical problems requiring immediate attention. Your system should operate relatively quietly, and unusual noises often signal worn bearings, loose components, or failing motors that will worsen without prompt repair.
Hot and cold spots throughout your home suggest airflow problems, thermostat malfunctions, or an improperly sized system. When certain rooms won’t reach comfortable temperatures regardless of your settings, professional diagnosis can identify whether you need repairs, ductwork adjustments, or system replacement.
Sudden spikes in heating or cooling costs without corresponding usage changes indicate declining efficiency. Aging components, refrigerant leaks, or dirty coils force your system to work harder, consuming more energy while delivering less comfort and signaling the need for maintenance or repairs.
When your system turns on and off repeatedly, it indicates thermostat issues, electrical problems, or an oversized unit. This short-cycling wastes energy, increases wear on components, and prevents your home from reaching comfortable temperatures. Call our HVAC contractor in Chester County before the problem escalates.
Water pooling near your indoor unit or ice forming on refrigerant lines signals drainage problems or refrigerant leaks. Condensate drain clogs cause water backup, while refrigerant issues affect your system’s ability to heat or cool effectively and require immediate professional attention.
Musty smells indicate mold growth in your ductwork or air handler, while burning odors suggest electrical problems or overheating components. If you detect a rotten egg smell near gas equipment, evacuate immediately and call for emergency service—this indicates a dangerous gas leak.
Choosing an HVAC contractor means trusting someone with your family’s comfort and safety. When you invite us into your home, you’re making a decision that affects your daily life for years to come. Here’s what sets us apart and why homeowners have relied on us since 1971.
As a family-owned business, we understand that every service call represents your home and your family's well-being. This perspective shapes every decision we make, from the technicians we hire to the quality standards we maintain, ensuring you receive the care we'd expect for our own families.
We built our reputation on straightforward communication and integrity. You'll receive honest assessments of your system's condition, clear explanations of necessary repairs, and upfront pricing without hidden fees. We educate you on options rather than pressure you into unnecessary services you don't actually need.
Serving the Main Line and surrounding communities for over half a century has taught us the specific challenges Chester County homes face. When comparing HVAC companies in Chester County, our deep understanding of local climate demands and regional home construction translates directly into better service.
Homeowners have questions about HVAC service costs, system lifespan, and emergency response times. Here are answers to the most common questions we hear from customers throughout the region.
Repair costs vary widely depending on the issue and components involved. Minor fixes like thermostat replacements or capacitor repairs start around $200, while major component replacements such as compressors or heat exchangers can exceed $1,500. We provide upfront estimates before beginning any work.
New system installations typically range from $6,000 to $20,000+ depending on several factors. System size, efficiency rating, brand selection, and installation complexity all impact final costs. For example, a furnace only replacement could be between $6k-$9K while an entire HVAC system can run anywhere from $10k-$20k. We’ll evaluate your home’s specific needs and provide a detailed quote that breaks down all costs involved.
Yes, we offer comprehensive maintenance plans that include annual tune-ups, priority scheduling, and discounts on repairs. Regular maintenance prevents breakdowns, improves efficiency, and extends equipment lifespan. As your trusted HVAC contractor in Chester County, we’ll keep your system running smoothly year-round.
We understand that heating and cooling emergencies can’t wait, especially during extreme weather. Our team prioritizes emergency calls and works to respond as quickly as possible. When your system fails unexpectedly, contact us immediately and we’ll get a technician to your home fast.
Most systems last 15-20 years with proper maintenance. Lifespan depends on installation quality, regular maintenance, usage patterns, and whether components face excessive strain from extreme temperatures. For reliable HVAC in Chester County, annual tune-ups significantly extend your system’s operational life and prevent premature failure.
If your system is under 10 years old and repair costs are less than half of replacement cost, repair usually makes sense. For systems over 15 years old requiring major repairs, replacement often provides better long-term value. We’ll help you evaluate both options honestly.
Don’t wait until your system breaks down during the coldest or hottest day of the year. Whether you need emergency repairs, a new installation, or preventive maintenance, our team is ready to deliver the expert service your home deserves. For trusted HVAC in Chester County, PA, call DiFillipo’s Service Company now and experience the difference that decades of family-owned expertise makes in your home’s comfort and safety.