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Efficient AC Solutions in Central PA

Call 610-593-5129

Keep Cool. Call the Good Natured Guys.

For over 90 years, Chester and Lancaster County homeowners have trusted Summers & Zim’s for air conditioning service they can count on. Our certified technicians are available day and night — for routine maintenance, emergency repairs, or a full system upgrade. Backed by our 5-Point Guarantee.

Everything Your AC Needs, Under One Roof

From emergency repairs to full system replacements, Summers & Zim’s handles every aspect of your home’s cooling and air quality. Our skilled technicians are equipped to tackle whatever your system needs — keeping you comfortable all season.

Call 610-593-5129

See What Our Customers Say

24/7 Emergency AC Service

Air conditioning emergencies don’t wait for convenient hours, and neither do we. Summers & Zim’s offers around-the-clock emergency AC repair across West Chester, Lancaster, Chester, and Delaware Counties. Day or night, our team is ready to respond and restore comfort to your home fast.

Call 610-593-5129

Design your Blue Collar Club Membership

Join the Blue Collar Club for peace of mind with priority scheduling, exclusive parts discounts, and the confidence that your home systems are always running at their best.

Not Sure Which Filter You Need?

We’ll help you find the right size and type for your system so you’re not guessing in the hardware store aisle.

Chester County's Trusted AC Experts Since 1930

When summer hits southeastern Pennsylvania, Summers & Zim’s keeps you cool. Our NATE-certified, EPA-accredited technicians bring 96 years of experience to every air conditioning repair and installation — all backed by our 5 Point Guarantee.

Our Guarantee

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Design Guarantee

If our custom-designed HVAC or plumbing system doesn't meet your home's needs, we'll adjust or replace it at no cost.

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No Lemons Guarantee

If a boiler section (10yr), hot water heater tank (6yr), or well pump (5yr) fails prematurely, we'll replace it for free.

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$500 No Frustration Guarantee

If a new installation disrupts heating, cooling, or hot water for more than a day within the first two years, we'll pay you $500.

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Home Protection Guarantee

We'll repair or replace any carpets, walls, floors, or furniture damaged by our team during a service visit.

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100% Money Back Guarantee

If your installed system doesn't meet expectations, we'll remove it and refund your investment in full.